SPDTool: Read, Edit and Flash your Memory's SPD

http://www.techpowerup.com/spdtool/SPDTool_055.zip

http://img.techpowerup.org/061117/Capture057.jpg

Using it you can edit the timings and other settings stored in the SPD of your memory modules.

Changes in 0.4:
Added NVIDIA chipset support
Added Compare function

Changes in 0.52:
Added Upload function to submit SPDs to SPD database
Fixed nForce400 writes
Fixed a few minor bugs
Added a few minor features

Changes in 0.53:
Fixed minor issue with Mfgr Id detection
Fixed URL for Memory Database upload

Changes in 0.55:
Fixed Timing Summary rounding error
Changed minor cosmetic details

Is it less buggy than Taiphoon?

i hope so :) at least it will be maintained .. so if you find bugs, report them and i will get them fixed

It looks really nice.

The hex values are taken from the Micron website, or do you not know? That's how I used to edit SPD's.

Did you help in developing this tool?

i wrote it :)

the parser is written according to the jedec ddr2 spd specification. once the program works more stable i will add ddr1 support

Very nice, thanks W1zzard :D

Quote:

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Originally Posted by W1zzard

i wrote it :)

the parser is written according to the jedec ddr2 spd specification. once the program works more stable i will add ddr1 support

---

Thanks for sharing !

ATM I have no DDR2, so I won't be able to do some testing :(

the read, hex edit and write features work on any memory type.

the parser in the bottom half of the window "speaks" only ddr2 atm though

Quote:

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Originally Posted by W1zzard

i wrote it :)

the parser is written according to the jedec ddr2 spd specification. once the program works more stable i will add ddr1 support

---

Is this something i can use to rewrite my OCZ SPD so instead of booting at 5-6-6-18 it can boot up at 4-4-4-15 like they are supposed to??? on my P5W DH Board at 2.1v

When i put SPD controlled memory i get 5-6-6-18 with 42 TRef and the other value at 7(Dont remember wich), if i put it manually, the subtimings move also, to 37 instead of 42 and 6 instead of 7, wich then my computer would only boot at 266FSB.

DUH!!! i don't even understand my self. :slap:

yeah thats something it could be used for. editing the spd is kinda complex, maybe someone here can help out with guidance?

Flashing SPD's on Dimms is not something that should be taken lightly. You can seriously muck up your memory if you are not careful.

Pancito,

Flashing to timings of 4-4-4 would render your dimms unbootable because if you were to clear the CMOS, you can't run 4-4-4 timings with 1.8V, you need 2.0V or higher. The board defaults to 1.8V so you need timings that are looser to allow a boot.
We don't set SPD's loose because we like to, we set them loose for a reason.

Again, no one should be flashing dimm's just to suit their fancy, you should learn what different timings do and the consequences before using this tool.

Back on Topic....Thanks very much for all your efforts Wizzard, I am so looking forward to using this :D:D:D

thanks wizzard awsome work, with this we can get personal "names" on the ram info?

Quote:

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Originally Posted by metro.cl

thanks wizzard awsome work, with this we can get personal "names" on the ram info?

---

yup you can change the module part number to say anything you want. it serves just an informational purpose, so no change in performance or risk of issues

thanks, but does this have the option of changing the SPD of more than just the module in the first dimm?

Quote:

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Originally Posted by RyderOCZ

Flashing SPD's on Dimms is not something that should be taken lightly. You can seriously muck up your memory if you are not careful.

Pancito,

Flashing to timings of 4-4-4 would render your dimms unbootable because if you were to clear the CMOS, you can't run 4-4-4 timings with 1.8V, you need 2.0V or higher. The board defaults to 1.8V so you need timings that are looser to allow a boot.
We don't set SPD's loose because we like to, we set them loose for a reason.

---

Here's my scenario, in my P5W DH at 266FSB i can select memory at 800 with timings at 4.4.4.15, stock right, what i can't change on that board is subtimings, if I check Memset, subtimings tRFC is set to 37 and tRD is set at 6, when i up the FSB to 400mhz and run the memory at 800Mhz i can't run with manual memory timings, i have to let SPD take over, to loosen the tRFC to 42 and tRD to 7 or 8, that way i can work without a problem, at 5.4.4.18

all could be fix if Asus got an update for BIOS to allow me to change tRD and tRFC. but this is another solution or im peeing outside the pot.

Quote:

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Originally Posted by pancito

Here's my scenario, in my P5W DH at 266FSB i can select memory at 800 with timings at 4.4.4.15, stock right, what i can't change on that board is subtimings, if I check Memset, subtimings tRFC is set to 37 and tRD is set at 6, when i up the FSB to 400mhz and run the memory at 800Mhz i can't run with manual memory timings, i have to let SPD take over, to loosen the tRFC to 42 and tRD to 7 or 8, that way i can work without a problem, at 5.4.4.18

all could be fix if Asus got an update for BIOS to allow me to change tRD and tRFC. but this is another solution or im peeing outside the pot.

---

You can set the timings manually, just don't use 400...set the FSB to like 405, you are overclocking the Chipset greatly when you are at 400, you are not running into a memory issue, you are running into a chipset issue.

This thread is about the SPD tool however, not for troubleshooting.....email me with the link in my sig or head on over to the support forums at the other link in my Sig.

Thanks

I too would greatly caution people against flashing thier ram to try and get certain cas latencies out of it.

you can see it all over newegg, that most people generally dont know anything about thier ram, and always think something wrong, when they get some cas 4-4-4 ram, and it boots at cas 5-5-5, or they buy 1 ghz ram, and it boots at 800 mhz...

all DDR2 has to be able to boot at a reasonable speed, and since most DDR2 these days is rated near 2.2 volts, yet the default standard for DDR2 is 1.8 volts, then all ram must be able to boot at 1.8 volts... which is why the ram has a nice safe speed, like cas 5-5-5 at 800 mhz.
but read pretty much any ram review on newegg about DDR2 and you can see almost none of those guys know about this at all...
even here I sometimes see people flipping out cause thier ram is PC8500... but the SPD in CPU says PC6400....

if you dont understand the various things in the SPD, and how they effect other things, you might end up with no ram at alll...





however.
there is one thing I strongly suggest you remove.

the ability to flash the product manufacterers code.
that greatly increases the likely hood of various forms of theft.

I can see it now.
some kid flashing a few pears of cheap crap ram, go on the for sale area and post "6 sets of Corsair XM 5400 UL, version 1.2 the good stuff... great ram, people have been able to do cas 3-2-2-1 with this ram forever, I have lots, here you can get it cheap".

it's also a risk for those people that kill thier hardware and have no ethics and will send the dead ram back and claim they dont know what happend, so they can get more ram.... even though they know they killed that ram.

:cool: Oha - nice looking but only for experts.

I won't use it - one mistake and bye bye $400 RAM.......:stick:

:toast:

Quote:

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Originally Posted by camouflage

:cool: Oha - nice looking but only for experts.

I won't use it - one mistake and bye bye $400 RAM.......:stick:

:toast:

---

You can change Vendor ID, to something like Pancito's RAM. would that Void Memory Warranty??? LOL I guess so very much. :slapass:

Quote:

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Originally Posted by Kunaak

I too would greatly caution people against flashing thier ram to try and get certain cas latencies out of it.

you can see it all over newegg, that most people generally dont know anything about thier ram, and always think something wrong, when they get some cas 4-4-4 ram, and it boots at cas 5-5-5, or they buy 1 ghz ram, and it boots at 800 mhz...

all DDR2 has to be able to boot at a reasonable speed, and since most DDR2 these days is rated near 2.2 volts, yet the default standard for DDR2 is 1.8 volts, then all ram must be able to boot at 1.8 volts... which is why the ram has a nice safe speed, like cas 5-5-5 at 800 mhz.
but read pretty much any ram review on newegg about DDR2 and you can see almost none of those guys know about this at all...
even here I sometimes see people flipping out cause thier ram is PC8500... but the SPD in CPU says PC6400....

if you dont understand the various things in the SPD, and how they effect other things, you might end up with no ram at alll...





however.
there is one thing I strongly suggest you remove.

the ability to flash the product manufacterers code.
that greatly increases the likely hood of various forms of theft.

I can see it now.
some kid flashing a few pears of cheap crap ram, go on the for sale area and post "6 sets of Corsair XM 5400 UL, version 1.2 the good stuff... great ram, people have been able to do cas 3-2-2-1 with this ram forever, I have lots, here you can get it cheap".

it's also a risk for those people that kill thier hardware and have no ethics and will send the dead ram back and claim they dont know what happend, so they can get more ram.... even though they know they killed that ram.

---

hmm I can really see that happening some scamer selling of cheap ram as branded ram at low price :mad:
Like passing of the crucial anniversary edition as 800mhz ballistix :slapass:

Quote:

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Originally Posted by RyderOCZ

You can set the timings manually, just don't use 400...set the FSB to like 405, you are overclocking the Chipset greatly when you are at 400, you are not running into a memory issue, you are running into a chipset issue.

This thread is about the SPD tool however, not for troubleshooting.....email me with the link in my sig or head on over to the support forums at the other link in my Sig.

Thanks

---

Uh, he is on 975, how is setting FSB to 405 EASIER than 400?

On the AW9D MAX I can run TRFC of 21 and tRD of 5 @ 433 FSB ish...

I know the P5W DH is picky about ram though...

Quote:

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Originally Posted by Kunaak

that greatly increases the likely hood of various forms of theft.

---

good point but there is always thaiphoon which you can use .. or get a real spd flashing machine or build your own flasher (a couple of hours if you know how)

Quote:

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Originally Posted by W1zzard

good point but there is always thaiphoon which you can use .. or get a real spd flashing machine or build your own flasher (a couple of hours if you know how)

---

yes...

but why make it easier to make happen?

Keep up the GOOD WORK! I really like it. I hope for more Versions soon :D

With the Ability to save DUMPs we'll be able to rescue RAM easier.

Just got one Question:
I just read read my GSKiLL 2GBHZ and Voltage Interface Level of this Assembly is set to SSTL 1,8V. There is an option available to set this to SSTL 2,5V!

Would this enable the RAM to be bootable even if i cmosClear my P5WDHboard(defaultVdimm = AUTO)? Shouldnt the Board try to set the MaxVoltage, so that the RAM has no problem booting, even if its set to speedy Timings like 3-3-3-9?

LOL, my SPDs does not have Module Serial Number and Module Manufacturing Date set. I know thats not necessary needed, but since GSKiLL sells em with a Sticker with that Info i can now add this Info - nice Feature!

PS: I live very CLOSE to you, so DANKÖÖÖÖÖÖÖ&#21 4;Ö :D

iLL

I cannot see where are the rated frequency... My RAM are rated at 1066Mhz 5-5-5-15 @ 2,1v. by SPD but i see that Corsair are do a mistake and SPD are set at 1066 0-5-5-15 ?!? That zero and in other way theese 1,8v. are problem cause thanks to them my rig wont POST every time :( I already do a VDIMM mod so i have 2,15v. instead of 1,86v. and i dont have problem with POST for now... So if i want to change rated speed form 1066 to something like 800 or 533 from where to do that ? Also i want to put 5 in the place of that 0... Thanx.

Quote:

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Originally Posted by SKiLL3D

Keep up the GOOD WORK! I really like it. I hope for more Versions soon :D

With the Ability to save DUMPs we'll be able to rescue RAM easier.

Just got one Question:
I just read read my GSKiLL 2GBHZ and Voltage Interface Level of this Assembly is set to SSTL 1,8V. There is an option available to set this to SSTL 2,5V!

Would this enable the RAM to be bootable even if i cmosClear my P5WDHboard(defaultVdimm = AUTO)? Shouldnt the Board try to set the MaxVoltage, so that the RAM has no problem booting, even if its set to speedy Timings like 3-3-3-9?

LOL, my SPDs does not have Module Serial Number and Module Manufacturing Date set. I know thats not necessary needed, but since GSKiLL sells em with a Sticker with that Info i can now add this Info - nice Feature!

PS: I live very CLOSE to you, so DANKÖÖÖÖÖÖÖÖÖ :D

iLL

---

Voltage for DDR2 is set to 1,8V on every ram, you can't store it in SPD...
Maybe EPP supports voltage settings, I don't know

new version: 0.52

yeah I can see RMA for ram makers b/c of people putting wrong hex code in and fubaring spd or dimm.
I like that experts could potentially tune their memory with this, but I myself will leave that to bios tweaks. Not to say W1zzards tool doesn't have merit, but I forsee $$$ problems for memory companies b/c of shady people trying to do false RMA's and or theft :(.

1.) Development speed is nice! :D
2.) How about an Expert, an Advanced and a Noob Profile?
- ExpertProfile would allow the User to change everything
- Advanced allows more than Noob but less then Expert
- NoobProfile allows only CAS Latency(tCL), RAS to CAS Delay(tRTC), RAS Precharge(tRP) and Precharge Delay(tRAS)

Disabled Features would only be greyed out.
Default Profile would be 'Noob' and everytime the User wants to get to one of the other 2 Profiles an explicit Warning Message shows up. OK, this would be kinda irritating, but how often do you flash the SPD? Since its not a daily job its ok with the Warning PopUps i guess.

IF u think about taking in a ProfileSystem u are free to change the ProfileNames :D

PS: WEITER SO! ;D

iLL

Please build in a huge disclamer and stuff to scare n00bs of, even if you write settings that are all correct you can make your ram unusable....

And I found a bug, if you select a dropdown box and you start scrolling the dropdown box moves along with your scrolling.....

Quote:

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Originally Posted by DaWaN

Please build in a huge disclamer and stuff to scare n00bs of, even if you write settings that are all correct you can make your ram unusable....

And I found a bug, if you select a dropdown box and you start scrolling the dropdown box moves along with your scrolling.....

---

yeah i noticed that too .. the grid component is buggy.. gonna take me a while to fix it ..

new version out .. go and submit your SPDs to the database

Thanks for sharing this W1zzard, this is something I can definately use. :)

I really hope people do not misuse this tool though.. :o

Where is that SPD database ? Can i download SPD files from there ?

10X I think i found it on the site :)

Exactly what I needed!

Can I ask a few questions though?

- Is there a table or a formula to associate the subtimings read by this tool, with the ones we use everyday? E.g. SPDtool says my tRAS is 40ns, while I am used to see it as "11" everywhere else.

- I want to use my 3-3-3-8, 200MHz ram on my AW9D. This board won't boot with PC3200 DIMMs, while my previous one (DS3) could. Propably because of the 965/975 differences. I know my ram can do 410MHz with 5-5-5-15. Would it make sense to change its SPDs to 266MHz 5-5-5-15, just to ensure it'll POST, and then change everything else manually?

- Any reason not to try this on ECC memory?

Again, W1zzard you rock, I would gladly vote SPDtool as the most useful o/c tool released in the last couple of years.
Keep up the great work, m8.:)

All the nano-timings are based on the "SDRAM Cycle time".

The ns-based timings are the "sdram cycle time" multiplied by the cycle-based timmings.

e.g. my spd of the ex:P 333 module was saying at 166 tras 7 , and at 133 tras 6 , the tras in both cases is 166->(7x6ns)42ns , 133->(7.5x6)45ns , so the minimun tras it reports the spdtool is 42ns

after a bit of searching through google and bit experiment 2 things to sort out...

1st) someone mentioned in a thread -i cant dumbingly find out now:p:- that the taiphoon (and proly spdtool) doesnt parse the "secondary" data/timmings stored in the spd.. .Without beeing an expert i think -at least for spdtool- its completely wrong.. This is an example of a spd data http://www.samsung.com/Products/Semi...btm_ddr400.pdf
and at samsung's site u can find plenty of spds ,All the spds i checked say clearly that the 1st 128byte of the epprom are factory programmed, the rest are blank space for the customer.AND in the "1st" half spd according to these pdfs are all the data/timmings reads the spdtool

2nd) dont know if its mentioned elsewere , but it seems the taiphoon's spd files are just as RAW data as spdtool's spd files except that taiphoon adds a "header" at the 1st 5bytes of each spd data file, thats why u cant read with spdtool.
To read them through spdtool just do the following.
-Open the taiphoon spd file with notepad , the 1st 5bytes ALWAYS look like
TH10

delete them (the RAW spd file should ALWAYS start with € char) and save the file.Do a check to see if its 256byte size(in case u accidentaly erased/forgott to erase some bytes) and try to open it with spdtooll now :)

in case u have misstyped something in the spd file,the spdtool will read very irrational data in most of timing data places (try to create a txt file with random chars 256byte file size and open it with spdtool to see what i mean irrational :P) and common sense must say to u to double check it again ;)

hope helped:)

awesome tool! ;)

Marco

Quote:

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Originally Posted by Kunaak

yes...

but why make it easier to make happen?

---

he is providing a tool for modders.

its not making it much easier, all you need to ask for is a picture of the mems look at the heatspreader and pcb.

plus other tools can do the same thing.


great work w1zzard.:toast:

Copied from my other topic:

Hello everyone :)

My specs are:

E6600
Asus P5W DH Deluxe
GeIL 2GB (2x1GB) PC6400C4 800MHz

The Asus board is very picky about memory and theres lots of problems running an FSB over 360 with manual memory timings.

My memory is set to run at 4-4-4-12 @ 2.1V

The CPU itself overclocks to 3.6GHz easily @ 400FSB (9x400), however with an FSB this high auto SPD settings have to be used.

I believe its down to shoddy programmed SPD Timings by GeIL.... take a look

http://i85.photobucket.com/albums/k4...mages/geil.jpg

400Mhz should be 4-4-4-12

I've noticed 2 programs that I think will help: Thaiphoon Burner + SPDTool

http://i85.photobucket.com/albums/k4...images/spd.jpg

As you can see here the default timings are awful.

Any help on reprogramming this memory?

Cheers

* The memory boots as PC5400 on reset of the cmos which is 333mhz right? Wouldn't be an issue then if its reprogrammed im guessing.

yeah that is ddr800 4-4-4 but you have that at a specified voltage usually 2.2v that the producer warranties but you need to set that manualy since the BIOS set's your voltage to 1.8v and with ddr800 at 4-4-4 1.8v is very unlikely to work.This was explained in the previous posts.

Anyone reckon flashing the left rom (modified one) onto the original (on the right) will work?

http://img447.imageshack.us/img447/9550/spdtoolye8.png

I've just tried using this tool on my hynix PC4200 that is able to run at 800mhz CL4-4-4-12. I've got the SPD table looking fairly sane but when I try to write it, it says Verify Failed (i made sure to do fix checksum). The first time I aborted and reloaded the original SPD but this time I've said 'ignore' each time that box has come up.
Should I just put the original spd back on it or reboot to see what happens? I dont want to kill the memory so I'm only doing this to one stick out of two initially.


edit: if anyone else has my problem, it's because the SPD is read only :( oh well, worth a go

nice tool, be sure to have lots of disclaimers everywhere saying "USE AT YOUR OWN RISK blah blah blah"

I for one will make excellent use out of this. I am going to flash my 1.8v elpedia ram in my laptop from 667 5-5-5-15 to 4-4-4-12 :)

good old elpedia, thank you for loving low voltage :)


Many thanks to you!

Quote:

---

Originally Posted by Audioboxer

Copied from my other topic:

Hello everyone :)

My specs are:

E6600
Asus P5W DH Deluxe
GeIL 2GB (2x1GB) PC6400C4 800MHz

The Asus board is very picky about memory and theres lots of problems running an FSB over 360 with manual memory timings.

My memory is set to run at 4-4-4-12 @ 2.1V

The CPU itself overclocks to 3.6GHz easily @ 400FSB (9x400), however with an FSB this high auto SPD settings have to be used.

I believe its down to shoddy programmed SPD Timings by GeIL.... take a look

http://i85.photobucket.com/albums/k4...mages/geil.jpg

400Mhz should be 4-4-4-12

I've noticed 2 programs that I think will help: Thaiphoon Burner + SPDTool

http://i85.photobucket.com/albums/k4...images/spd.jpg

As you can see here the default timings are awful.

Any help on reprogramming this memory?

Cheers

* The memory boots as PC5400 on reset of the cmos which is 333mhz right? Wouldn't be an issue then if its reprogrammed im guessing.

---

Hi Audioboxer,

I have the same RAM as you (the ultra low latency modules), however I have an earlier SPD table in my RAM which was later addressed by Geil with a reprogram to the same table details as yours (only early modules of this type were affected).

Any chance you could do a dump of your SPD table on your ram and send it to me so I can correct mine?

Thanks

Hi ketma

just change the hex code of one of your own bios dumps to match audioboxers code in the image.
i.e. left click on the "80" at the top left and scroll through with arrow keys, correcting the code shown in the blue box below.

http://img176.imageshack.us/img176/4893/spd12fv2.jpg

Remember to save a copy of your original BIOS.

This looks pretty cool and I'll be sure to check it out.

That being said, let me try to answer some of the questions people have posted about the SPD.

First off let me state that you should NOT be rewriting the SPD on your RAM unless you've been instructed to do so by the manufacturer and have been given very clear instructions on how to do so AND an approved image file for your particular module. When you do this without the express consent of the manufacturer you will without exception void your warranty and incorrect values could render your modules inoperable (and it's easy for a mfg to see that the SPD has been messed with). Without a stand alone programmer it's quite possible that you won't be able to recover an improperly programmed module.:fact:

That being said, there are some values you can adjust and some you can't. Probably the safest way to do any sort of experiment would be to flash your SPD with one from another set of modules that you know are similar. I.E. if you've got Micron IC's you'll probably be OK using an image from another set of modules that are built with the same IC's. Different speed grades probably doesn't matter as long as they are both using the same die revision of the IC. If you don't know what IC you have don't mess with the SPD, you could really screw things up.

Additionally, every BIOS has different rules as far as your SPD goes. In some case the BIOS is only concerned with the frequency and will ignore everything else. Just because it's written in the SPD doesn't mean you're going to see it have any effect on your actual settings. RAM is a passive device, at the end of the day you can't do anything with it that your IC, BIOS, or memory controller doesn't support or won't allow. Just because JEDEC defines a value (for instance CAS 2 for DDR2) doesn't mean that your IC is physically capable of doing it or the memory controller supports that value. Everything has to support what your trying to do your you're likely to get an inoperable system. The best way to know what your particular IC is capable of is to download the data sheet from the IC mfg's website, same for your memory controller.

Before doing anything it'd probably be a good idea to see if your board will POST with mismatched modules. This should be easy enough to do, grab a 800MHz part and a 667MHz part, plug them in and turn on your system. If you get POST (it might complain about mismatched SPD's) you should be good. Just play with one module at a time making sure keep a good module in reserve to allow you to recover in case you set something breaks your system.

Quote:

---

Originally Posted by metro.cl

thanks wizzard awsome work, with this we can get personal "names" on the ram info?

---

You could put that sort of information into the SPD at Bytes 73-90 where the module part number usually goes.

Quote:

---

Originally Posted by SKiLL3D

Just got one Question:
I just read read my GSKiLL 2GBHZ and Voltage Interface Level of this Assembly is set to SSTL 1,8V. There is an option available to set this to SSTL 2,5V!

Would this enable the RAM to be bootable even if i cmosClear my P5WDHboard(defaultVdimm = AUTO)? Shouldnt the Board try to set the MaxVoltage, so that the RAM has no problem booting, even if its set to speedy Timings like 3-3-3-9?

---

No, JEDEC doesn't define voltages beyond 1.8 for DDR2 and I'd be surprised if the BIOS even reads this field. This field hasn't changed from SDRAM to DDR1 to DDR2 and doesn't look like it's going to change for DDR3 (1.5VDIMM). I.E. that 2.5 is defined by JEDEC isn't to say that it's supported for DDR2.

Quote:

---

Originally Posted by Kartoff

I cannot see where are the rated frequency... My RAM are rated at 1066Mhz 5-5-5-15 @ 2,1v. by SPD but i see that Corsair are do a mistake and SPD are set at 1066 0-5-5-15 ?!? That zero and in other way theese 1,8v. are problem cause thanks to them my rig wont POST every time :( I already do a VDIMM mod so i have 2,15v. instead of 1,86v. and i dont have problem with POST for now... So if i want to change rated speed form 1066 to something like 800 or 533 from where to do that ? Also i want to put 5 in the place of that 0... Thanx.

---

First off, if what you're saying is correct you should probably just RMA your modules. BUT to answer your question Byte 9 is where your frequency resides per JEDEC. CPUz takes its values from the EPP portion of the SPD though so it looks like you've got a bad bit. PM or email me and I'll help you get that fixed.

Quote:

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Originally Posted by DaWaN

Voltage for DDR2 is set to 1,8V on every ram, you can't store it in SPD...
Maybe EPP supports voltage settings, I don't know

---

Actually it does (see above) but it's probably ignored by the BIOS. Yes, you can define the VDIMM in the EPP portion of the SPD (see below).



For everyones reference below is a link to the JEDEC DDR2 SPD datasheet and a handy Excel sheet spelling out the frequencies you could theoretically have in the JEDEC portion of the SPD along with the EPP specification.


EPP specification

JEDEC DDR2 SPD

Available JEDEC frequencies

Quote:

---

Originally Posted by Audioboxer

Copied from my other topic:

Hello everyone :)

My specs are:

E6600
Asus P5W DH Deluxe
GeIL 2GB (2x1GB) PC6400C4 800MHz

The Asus board is very picky about memory and theres lots of problems running an FSB over 360 with manual memory timings.

My memory is set to run at 4-4-4-12 @ 2.1V

---

Hi Audioboxer,

I have the exact same RAM, motherboard and CPU as you. Please let me know if you find a way to reprogramming the SPD tables with 4-4-4-12 settings. I'm very tempted to try myself, but I can't afford to replace the RAM in case it gets destroyed...

I have a problem with my config and that may help me.
I'm able to reach 405FSB in certain bios settings with spd timings enabled. Once I disable them and set manual timings It won't boot over 320 FSB, even if the timings are the same they were before.

So I booted with manual timings (below 320FSB) and set TRFC to 42 manually by memset.
Guess what, I was able to reach 410FSB flawless!

Will SPDTool help me setting trfc to a correct value so my ram can boot?

Anyone know if these chipsets are supported for flashing SPD using spdtool ?

Asus P5B Deluxe
DFI ICFX3200
Asus 680i Striker Extreme

?

thanks

i tried P5B Dlx and eVGA i680 - no problems @ all

Looks like an invaluable tool :clap: :toast:

Great tool wizz, it works flawless! :toast:

Flashed my two PC5400 EB with my Ballistix SPD -

http://666kb.com/i/al9ihg60sucn2mwc0.jpg

Quote:

---

Originally Posted by Alonso

i tried P5B Dlx and eVGA i680 - no problems @ all

---

thanks i used my asus 680i striker and it worked for my ocz pc8000 titanium alpha vx2 http://i4memory.com/showthread.php?t=3604 :)

Quote:

---

Originally Posted by funkflix

Great tool wizz, it works flawless! :toast:

Flashed my two PC5400 EB with my Ballistix SPD -

---

You did what????? :slap:

Quote:

---

Originally Posted by RyderOCZ

You did what????? :slap:

---

i guess there goes any chance for him to get an RMA

Never damaged any RAM. ;)

But even with the same SPD i can't manage the 500MHz 4-4-4-x on the OCZ, so it was a bit useless to be honest..

Is RD600 chipset supported for flashing SPD using spdtool ? :)

Guys this is a great tool.

But I have to say I am not comfortable using it.

What I would love is for the drop down menu to reflect the timins I see in BIOS or memset when tweaking.

as in options like change ras-cas from 16 to 15.

I have 2x 1GB OCZ PC8000 XTC and 2x 1GB PC6400 XTC (vanilla not titaniums) - but as I am running a P5WDH board I have to rely on spd timings to break the 400mhz barrier on the FSB.

The SPD suxxorz on these sticks but they do run nice when u tweak them.

I take on board what peeps say abotu voltages etc - these wil run 5-4-4-18-28 - if someone could provide me with a spd timing for these at 400mhz as above it wouldbe fantastic.

So far though a very impressive piece of kit.

this app worked wonderful - reprogrammed the spd on the pc2700 modules in my laptop - so i've got pc3200 2,5-3-3-7 for free. :woot:

An invaluable tool for tweaking ram on systems where you can't change timings, (or all of them). I'm kind of tempted to try and see if I can do better than 4-4-4-11 533mhz on my laptop (memset trials first of course)

I have a pair of ram right now that won't boot at 6-6-6. 5-6-6- works but 6-6-6 is no post. The board in question is a p5b vanilla. I looked in the spd information and saw that allowable cas settings were 3, 4, and 5. Would modifying the spd to allow cas6 work? Or is this a board limitation? Once in windows, I can use memset30 to adjust cas from 6-8 without issue. Not like I'd want to live with having cas6 but just for purposes of seeing what it'll do

Quote:

---

Originally Posted by ziddey

I have a pair of ram right now that won't boot at 6-6-6. 5-6-6- works but 6-6-6 is no post. The board in question is a p5b vanilla. I looked in the spd information and saw that allowable cas settings were 3, 4, and 5. Would modifying the spd to allow cas6 work? Or is this a board limitation? Once in windows, I can use memset30 to adjust cas from 6-8 without issue. Not like I'd want to live with having cas6 but just for purposes of seeing what it'll do

---

I think Cas 6 not necessary include SPD. I think mobo limitation. Because I use rams , what spd no include cas 5, but works well ram with mobo, if I setup cas 5.

Is it possible to add support for 5000x chipsets to adjust fb-dimm spd. I desparately need to relflash my fb-dimms to lower speeds as dividers and timings are set at post and are not adjustable within bios or windows.

When I load spdtool it just says "No memory modules found. Incompatible SMBUS driver?"

Perfect tool to help fix my ram clocks on my DS3. It's incredibley difficult to change the sub timings in bios since it was written with incorrect values. Lets say you try to set TRRD to 4 in bios, it will give you 7 or 8 when you check with memset (you know how when you set voltages with the DS3 it gives you +.1v +.2V ect.? Well that's what they were supposed to do with the ram sub-timings but instead screwed it all up!)

PQI also screwed up with the TRFC SPD, instead of elpida's recommended 105ns they programmed it to 60ns, which is too tight.

Hehe I could actually change the SPD to do 400mhz 4-4-4-12, works fine for me with 1.8v! I can actually boot 400mhz 3-4-3-10 @ 1.8v and run STABLE! But... I'm not that stupid to actually do it!

Is there an easy guide on how some of you actually maanged to change the spd?

I want to change mine to 5-4-4-16

Cheers

Mav

Can someone explain to me how exactly I would change (downl clock) my rams rating to 667 max speed? I need to do this on 4 sticks for posting at bios default problems. Also, can I do them all together (one at a time) or do I need to boot each one separately first?

i just want to ask, where can i purchase external SPD flasher?
http://pics.computerbase.de/1/3/5/7/5/6.jpg

Quote:

---

Originally Posted by ziddey

I have a pair of ram right now that won't boot at 6-6-6. 5-6-6- works but 6-6-6 is no post. The board in question is a p5b vanilla. I looked in the spd information and saw that allowable cas settings were 3, 4, and 5. Would modifying the spd to allow cas6 work? Or is this a board limitation? Once in windows, I can use memset30 to adjust cas from 6-8 without issue. Not like I'd want to live with having cas6 but just for purposes of seeing what it'll do

---

It's not a board limitation, thats for sure. Remember you can't change cas with memset within windows ;)

I don't see any reason why you couldn't at the cas 6 support. If it didn't work I highly doubt it would screw your ram anyways, as long as your SPD doesn't set to cas 6 by default.

Any way of recovering RAM? My Patriot DDR2-800LLK stops PC from booting.
Anybody tried booting windows with working RAM and then inserting another stick of RAM into empty slot, so it could be accessed with SPDTool?

Quote:

---

Originally Posted by Kasparz

i just want to ask, where can i purchase external SPD flasher?
http://pics.computerbase.de/1/3/5/7/5/6.jpg

---

I think that's a RAM tester.
http://www.hardwareoc.at/madex-ramtester.htm
But my German is not so good.

i'm a total noob at this so could anybody explain how i recalculate the timings since SPDtool uses timing in ns. how do ram timings correspond to timing in ns?
because i have these PC2-3200 sticks that do 533mhz but wont boot since my BIOS support only starts at PC2-4200.
i plan to increase the frequency and lower the timing.
possible it would be really nice to just add a PC4200 profile to these sticks
help is greatly appreciated :)

Thanks for this tool Wizzard.:clap:

Is there an option in the tool to change the Max Bandwidth field? I could not see an option for this within it.

thankz wizzard, nice tool :D

Many thanks :)

Great Tool! :)

Quote:

---

Originally Posted by ziddey

I have a pair of ram right now that won't boot at 6-6-6. 5-6-6- works but 6-6-6 is no post. The board in question is a p5b vanilla. I looked in the spd information and saw that allowable cas settings were 3, 4, and 5. Would modifying the spd to allow cas6 work? Or is this a board limitation? Once in windows, I can use memset30 to adjust cas from 6-8 without issue. Not like I'd want to live with having cas6 but just for purposes of seeing what it'll do

---

I was wrong, I tried it and it wouldn't boot. To fix: put a good stick in and boot... Flash back to original spd......

I'm getting the no memory modules found, incompatible smbus driver - it's under Vista.

Is there any chipset driver I can install to fix this or am I SOL?
I need to flash some chips :(

It's an intel 845 chipset I'm trying to do it on.

no ddr2 for 845

Quote:

---

Originally Posted by ziddey

no ddr2 for 845

---

Sorry it might be 945?
Can I fix these SMBUS drivers to make it flash or is it a board limitation?

Does these work when Using a X38 as a motherboard?

Yes, it works on x38 :)

Quote:

---

Originally Posted by kiwi

Yes, it works on x38 :)

---

I just tried it in Windows XP 32-bit and it didn't detect my crucial memory.

I see you have maximus and it works on it no problems here :) Are you using latest 0.62 version?

Quote:

---

Originally Posted by kiwi

I see you have maximus and it works on it no problems here :) Are you using latest 0.62 version?

---

Oh there we go, Thanks. I didn't know there was a 0.62 version.

0.55 doesn't appear to work on my MSI K9A2 Platinum (with a 6000+ Windsor F3)
it says "Could not start driver: This diver has been blocked from loading"

I'm using XP x64 with SP2

*edit*
0.62 works on it.

Is the ati express 200 for intel supported.Do you need the wpcredit id #?:up:

Quote:

---

Originally Posted by SKiLL3D

1.) Development speed is nice! :D
2.) How about an Expert, an Advanced and a Noob Profile?
- ExpertProfile would allow the User to change everything
- Advanced allows more than Noob but less then Expert
- NoobProfile allows only CAS Latency(tCL), RAS to CAS Delay(tRTC), RAS Precharge(tRP) and Precharge Delay(tRAS)

Disabled Features would only be greyed out.
Default Profile would be 'Noob' and everytime the User wants to get to one of the other 2 Profiles an explicit Warning Message shows up. OK, this would be kinda irritating, but how often do you flash the SPD? Since its not a daily job its ok with the Warning PopUps i guess.

IF u think about taking in a ProfileSystem u are free to change the ProfileNames :D

PS: WEITER SO! ;D

iLL

---

In my search, I found this site and it goes over the basics of SPDTool:
http://forums.overclockers.com.au/sh...d.php?t=562506

I had kind of worked through SPDTool basics on my own going step by step through the hex table and was merely trying to match two sets of similarly timed DDR to run at 400mhz on an MSI board I like. But that page seemed to cover the essentials.

BTW, thanks W1zzard for this excellent utility!!

RHH

someone have find the solution for use spdtool under ICH10R ??

wow this tool might save my day.

i have a corsair dimm reporting some strange spd info.
its form a set of "twin2x4096-8500c5df" modules

the jedec1 seems completely of.


------------------------------------
part of cpu-z SPD info:

DIMM #3

General
Memory type DDR2
Module format Regular UDIMM
Manufacturer (ID) Corsair (7F7F9E0000000000)
Size 2048 MBytes
Max bandwidth PC2-6400 (400 MHz)
Part number CM2X2048-8500C5D

Attributes
Number of banks 2
Data width 64 bits
Correction None
Nominal Voltage 1.80 Volts
EPP yes (1 profiles)
XMP no

Timings table
Frequency (MHz) 270 400
CAS# 4.0 5.0
RAS# to CAS# delay 4 5
RAS# Precharge 4 5
TRAS 13 18
TRC 16 23

EPP profile 1 (full)
Voltage level 2.100 Volts
Address Command Rate 2T
Cycle time 1.875 ns (533.3 MHz)
tCL 5.0 clocks
tRCD 5 clocks (9.25 ns)
tRP 5 clocks (9.25 ns)
tRAS 15 clocks (28.00 ns)
tRC 22 clocks (41.00 ns)
tWR 8 clocks (15.00 ns)


DIMM #4

General
Memory type DDR2
Module format Regular UDIMM
Manufacturer (ID) Corsair (7F7F9E0000000000)
Size 2048 MBytes
Max bandwidth PC2-6400 (400 MHz)
Part number CM2X2048-8500C5D

Attributes
Number of banks 2
Data width 64 bits
Correction None
Nominal Voltage 1.80 Volts
EPP yes (1 profiles)
XMP no

Timings table
Frequency (MHz) 76 400
CAS# 4.0 5.0
RAS# to CAS# delay 1 5
RAS# Precharge 1 5
TRAS 4 18
TRC 5 23

EPP profile 1 (full)
Voltage level 2.100 Volts
Address Command Rate 2T
Cycle time 1.875 ns (533.3 MHz)
tCL 5.0 clocks
tRCD 5 clocks (9.25 ns)
tRP 5 clocks (9.25 ns)
tRAS 15 clocks (28.00 ns)
tRC 22 clocks (41.00 ns)
tWR 8 clocks (15.00 ns)

Hello,

In my Gigabyte EP45T-DS3R no working...

Error in Start : ''No Memory modules found. Incompatible SMBus driver?''

I'm using Windows Vista Ultimate X64 SP1

I'm necessite flashing my kit memories DDR3...
Help for my question? Incompatible for my chipset?
Programa version 0.62...

SPD-Z for OCZ no working... Error: ''Could not start driver: This driver has been blocked from loading''

Help me, please

Tnks people

Quote:

---

Originally Posted by OnDaS

Hello,

In my Gigabyte EP45T-DS3R no working...

Error in Start : ''No Memory modules found. Incompatible SMBus driver?''

I'm using Windows Vista Ultimate X64 SP1

I'm necessite flashing my kit memories DDR3...
Help for my question? Incompatible for my chipset?
Programa version 0.62...

SPD-Z for OCZ no working... Error: ''Could not start driver: This driver has been blocked from loading''

Help me, please

Tnks people

---

have you checked in your bios under security to see if the SMbus is being hidded from the system. cause if it is you will get that error, make sure its not hidden

cause i use to get that but remembered that it was being hidden from the system in bios.

SPDTool does not support P45 chipset.

Yes,

Tnks people!