Is ther any information out yet about the vmods for this card? I need to egt this baby oc'd...to the xtreme. :D
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Is ther any information out yet about the vmods for this card? I need to egt this baby oc'd...to the xtreme. :D
Post pics of the card if you have it.
Malves the 7800's are using an Intersil ISL6592 for the Vcore and the datasheet is as incomplete as you can get.Quote:
Originally Posted by Malves
Memory is using a Intersil ISL6534.
I can shoot you shoot real tight hi res macro's if you want. Just need to know where to send them as they will be far to large to post here.
Viper
@viperjohn : please send the picture to me.. benny_nejkt@yahoo.com. Many thanks..
These will be pictures of the regulators and surrounding SMD's not of the Vmods. Intersils datasheet on the ISL56592 Vcore regulator gives generalized marketing type description, a pin out and that is it. No operating parameters, no description on pin functions, no VID programming table, no nothin' useful lol.Quote:
Originally Posted by Benny Lodewijk
Viper
Hey there, man. Long time no see.:) Yes, please email those pics to me.:)
Will shoot them tomorrow for you when I have some good light.Quote:
Originally Posted by Malves
Viper
Cool! Thanx, man. Also, do you have the card? If you are willing to poke around, we may be able to work the mod out. But for now, it looks like VDD mod is pin 4 to pin 15 of ISL6534. Just gotta work out the resistance needed, after we confirm that.
Please work fast ;)
The bios can only give 1.4 volt. 1.5volt setting don't help as on 6800U. :(
hardwaremod is needed.
Yes I have the card here now. The card uses the 32 leg QFN package on the 6534. Pin 10 (FB3) traces out to what appears to be a divider. The high side SMR goes to the output of the Vmem PS but the low side SMR reads 11K to ground Could be another padding SMR downstream but I can't find it to confirm. That would not be typical either.Quote:
Originally Posted by Malves
Did you take a look at the 6592 datasheet. What a joke lol. I guess the chip is so new Intersil hasn't completed it yet.
Viper
Just emailed the 7800 regulator pictures to you. I can send the TIFF's if you want a larger FoV.Quote:
Originally Posted by Malves
Viper
Thanx, man. Just got them.:) Now I see the ISL6534 is not the TSSOP config. Looking at the specs for it, it looks like FB2 is the pin for VDD mod. With the confing used on this card, it's pin 32. Could you check volt and resistance on pin 32, plz?
That pdf for the ISL6592 really doesn't help much. But we can start checing volt and resistance on pins 12, 24, 36. Even thou, I think it could be pin 12 the one we want.:)
Persivore should give us some help here, too. Ima ask him to stop by.:)
Without seeing the card, its hard to tell which of the feedback pins on the ISL6534 is controling Vdd, but if Malves thinks its pin 12 (FB2), I'll go with that :)
The ISL6592 datasheet is somewhat...useless. It should be possible to work out which pin is feedback tho from checking the voltages on some of the pins which could be feedback (like pins 12, 23, 26, 27, 28)
C'mon guys... the vmod is needed anyway and some of u did it already... I totally don't care if i'll have to cut something with razorblades.. but my card is still waitin' for more voltage in order do perform a little bit faster on DICE.... -.-"
Here ya go persivore. Hope these pics work. Once again thanks for helping with that x600. :)
http://img40.echo.cx/img40/9273/picture3193xx.th.jpg
http://img83.echo.cx/img83/5901/picture3166qy.th.jpg
http://img222.echo.cx/img222/5144/picture3203mi.th.jpg
http://img101.echo.cx/img101/8632/picture3180uh.th.jpg
If the vga arrive soon at store i will take some macro shot's real close, just tell me the ic's u want guys!
Haven't been ignoring you. My dad has been in intensive care on a resperator that last couple of days with more tubes plugged into him that fully WC'ed SLI rig. The 7800 in not exactly on my mind at the moment and my customer knows it.Quote:
Originally Posted by Malves
*************Edited out do to error information*******************
It sure would be nice if NV numbered all the SMR's. Between that and the worthless 6592 datasheet it is hard to describe what is going where.
Viper
I said pin32 for vdd, bro.;)Quote:
Originally Posted by persivore
Attaching the pics John sent me. Sorry to hear about your dad, man. Hope everything turns out good.:)
We already have them or at least Malves and I do.Quote:
Originally Posted by VoRtAn_MaDgE
Viper
OT: what kind of epoxy did you use (or whatever you used to attach the Ramsinks) and what is the other thing you sinked? Does it help?Quote:
Originally Posted by harleybro
Please, keep discussion on topic. You guys can talk about that thru PM.
Okay I pulled my head out of my ass deleted out the bad info above.Quote:
Originally Posted by ViperJohn
On the ISL6534 Vmem regulator.
Pin 10 (FB3) goes straight to ground.
Pin 29 (FB1) goes a through 513 ohm SMR to ground.
Pin 32 (FB2) goes to Vmem B+ through a 4.02K SMR. Pin 32 also reads 4.07K to ground (solid) like it is also traced to a voltage divider low side SMR. I just cant find it nor is there a traces to one. What I though mignt have been the low side SMR is just SMR is series with noise suppresion caps on both sides.
Either the Pin 32 is picking up the 4.07k to ground internally (not according to the datasheet) or another trace runs under the chip then drops into a though plated hole to a PCB sandwich layer to pops up who knows where. It does appears that a trimmer from pin 32 to ground will mod the memory. Considering tolerance it appears it is a simple 50% voltage divider.
Viper
Okay we have a Vmem mod. A 100k trimmer (it measured 99.7k max) from pin 32 to ground increased the Vmem from 2.079 at the Windows Desktop to 2.164. 8 1/2 turns in (about 66K) gives 2.200 even at Windows Desktop.
The mod is pretty simple as there is pad for the automated test systems to solder one pot leg to and a 805 sized cap right next door for the ground solder point.
Will shoot some pictures tomorrow whan I have some light to work with.
Viper
Very cool Viper John lookin forward to the pics. :banana:
Very nice... well done ;)
Only Vcore is missing to make me completely happy - on vrzone a guy reached with a vcore mod 630 mhz on air... :-/
Nice, man!:) Good job!:up:
Wtg! :D
Heared that the vcore mod requires you to remove a few SMD parts? You think there is a safer way around that?
Good work on the Vdd mod :). Does the card need Vddq or Vref as well?
Can someone check the voltages at pins 12, 23, 24, 26, 27 and 28. I'm looking for a voltage of about 0.8v (or alternatively the voltage which is set with the VID pins) on one of those pins, which should be the internal reference voltage for the regulator, which should be present on the feedback pin for the regulator.
That is Jason57. We have emailed a couple of time. The card did a tad over 11k on dry ice. It appears to be an exceptionally good card but there isn't enoygh data yet to know what are going to be poor, average, good and "oh my god" cards yet in the luck of the draw.Quote:
Originally Posted by symbolized?
Viper
Here's the VDD mod done by ViperJohn. Thanx for the pics, man.:) 100k trimmer, lower resistance for more volts.
Nicely done ViperJohn, clean and very professional as always... :clap:
Did u have time to test the mod?
Any gains in mhz on the mem's? Any idea about the max but safe voltage to apply on memories? Depends on the cooling of course...extreme cooling will freeze the pcb of the card allowing more volts i presume!
Is there a vcore on the way? I ask that cuzz it's obvious that there are people that already know it.
Thks for the effort once again ;)
Ppl that already know it, won't tell you or us. That's why we are here. We just gave you guys the VDD mod, now you gonna have to wait for the vGPU mod.Quote:
Originally Posted by VoRtAn_MaDgE
You guys can help by providing the information persivore asked, if any of you have the card in hands.
I have the cards in my hands but i will be off the weekend (tuning show in portugal, international ;) ) i will start digging in pdf's after that, if u need some photos of any specific area just tell me, i will try to get a digi cam to take some real close macro shots... :)
edit: show me the places to measure volts :toast:
For what i search already this is the multiphase controller that will allow us to change vcore, correct me if i'm wrong...
http://img171.imageshack.us/img171/9475/isl4jl.jpg
I assume that persivore is asking about the pins values of the pic i posted above am i correct???
This pdf is one of the most or maybe the most imcompleted pdf from this nature that i found on the web...
I will try to arrive this night home soon to check the voltages guys! ;)
These are the points that he asked.
http://www.xtremesystems.org/forums/...chmentid=33734
Thks for the pic Malves :) will help a lot...
But in my case its very hard to check the voltages on that spot cuzz my mobo is in the case, and the mobo attached to the prommy :( ...
The place is this one...sorry for the quality but just to see how hard is to measure voltage in this situation, legs of the pins are real close and like this is hard to check one without touching others
http://img301.imageshack.us/img301/2...agem0654nz.jpg
Going try to check in other vga maybe
Attach a needle with eletrical tape to the lead of your MM.;)
Needle needed :D , got to find one...
btw malves, vdd measurement point is where... ???
Good thing you asked. See if you can find it here...
http://www.malvescorner.net/7800.html
I wanna see if ppl can understand that pic.:)
vdd, pin24 - 3,52v checked...
got to see if i can check the others, dunno where my brother put the electrical tape grrr :slapass:
Tha't too easy Malves ;)... just need to find c610, next to the label ;) 2,09v default checked :)Quote:
Originally Posted by Malves
Love that idea and never though of it. :clap: Had problems last time I was checking a chip upside down and on the other side of my card. Malves that is an excellant diagram you have on your site very easy to understand. :toast: I can't read mine till Tuesday so if nothing by then I'll get all the readings you need. Lettin someone borrow it for the weekend to pull off some SLI runs. ;)Quote:
Originally Posted by Malves
Pin 23 (V12_SEN) which is the left pin of the two pins indicated in red along the bottom side of the chip has a voltage dividerQuote:
Originally Posted by Malves
If you follow straight down from P23 the SMR just below the automated test point pad goes to Vcore PS B+ out. The SMR marked 622 to the left goes to ground and forms the other 1/2 of the divider. I tried a Vmod at the 622 SMR already.
I started 100k then turned down to 50K and the Vcore did not change even 1/1000 of a volt so that isn't da place. Someone can double check me on that if they want.
The three Vdd input pins (12, 24 ans 36) look like are they are traced to each other under the chip from the ohm meter readings of zero ohms to each other.
Viper
Yeah the PDF for the ISL6592 is about as useless as it can get with only a pin out and no functional descriptions.Quote:
Originally Posted by VoRtAn_MaDgE
Viper
check out this datasheet: http://www.intersil.com/data/fn/fn9157.pdf . It contains a reference circuit digram for the ISL6592, so it should be possible to work out a mod from that. It looks like Vsenp (pin 26) is connected as feedback, but it doesn't look like there is a resistor divider on the reference design, so a cut-trace might be needed to do the mod, depending on how closely the manufacturers have followed the design.
Edit: It looks like there is also a possible OCP mod by connecting a VR between pin 38 (cal_cur_sen) and ground. I don't know if one will be needed tho
Good find.Quote:
Originally Posted by persivore
Here are the PSENN and PSENP as built circuits on the 7800. Possibility of
adding a 3 wire divider trimmer here.
Viper
From MickeyMouse:
Solder a 15turn"multi turn" 250 ohm vr or 2 1k vr's in par. to these two points. "do not exceed a 500ohm vr as jumps are too great". the resistor is the circuit the solder pad is ground so feel free to use another ground instead of this tiny tiny solder pad..
7800vcore
http://img93.imageshack.us/img93/499/7800vgpu9nq.jpg
7800vcore mod area and read point
http://img36.imageshack.us/img36/4726/7800corea0kt.jpg
What the hell - is this mod working? And where are the cutted traces and remoced smd parts? oO
http://service.futuremark.com/compare?2k3=4089232
http://service.futuremark.com/compare?3dm05=987646
The mod is from the guy that did those, idk about you but I'm not about to question it. They are legit, he wouldn't share them with me if otherwise.
I am working but i'm seeing that u guys have a lot of new info about this thread... got to check it better when arrive home?
Is the vgpu working? :rolleyes:
The mod should work fine. The mod is just a little different (and simpler) that I just sent off to Malves for a look see to double check my findings. Adding the trimmer creates a feedback voltage divider using the existing 10 ohm SMR as the high side resistance of the divider and the trimmer as low side. I have it on the 7800 I have now and will be firing up shortly to test.Quote:
Originally Posted by symbolized?
Viper
:cool: Looking forward to ur results.
The Vcore mod works just as it should. I used a Bourns 25 turn, 200 ohm trimmerQuote:
Originally Posted by Chr0n1c
set at 200 ohms measured (pins 2 and 3) That kicked the Vcore up .050 volts.
I was at 1.440 3D Vcore before the mod an 1.490 Vcore after at 200 ohms.
Will shoot and post pictures later as there are solder points to use the are much easier
than tacking onto the end of a 402 sized SMR.
Viper
Thanks a lot guys ;). You're amazing... ;).
//Edit: Now, while the mod is available i'm interessted in the difficult mod - cutting traces and so on...
Anyone of you out there having some pics? :D
There is no need to cut traces. A 3 pin mod could be applied after removing the 0 ohm SMR in the PSENP circuit trace but there is no need to do that.Quote:
Originally Posted by symbolized?
Viper
Hey John,
I'd appreciate if you can take a pic for the vGPU check point for me, plz. So I can use it along with the pic you sent me before of the ISL6592 area to update my site.:) Shoot me an email. Thanx, bro.
No problem. I tried to send some pictures of a possible Vcore mod method forQuote:
Originally Posted by Malves
your opinion and to double check me (before the mod showed up at the XS).
The email back to me for the following:
reason: 550 5.1.1 unknown or illegal alias: marceloalves@verizon.net
If Verizon is having a problem you may not be getting a lot of mail.
Viper
marceloalves@comcast.net verizon is dead for me.:)
Quote:
Originally Posted by Malves
Ahw maybe that is the problem lol. I must have to email addy's for you in my address book.
Now onto another issue. This 7800 has lost all hardware acceleration and is only rendering in software mode for both DirectX and OGL.
Had a real soft Vcore bump up from 1.440 loaded stock to 1.500 loaded for a whopping 4%. Was do some benchmarking and finding the clean OC's, logged them and shut the system down to make and eat dinner.
Fired up an hour later to do some more testing and bingo...no hardward acceleration at all. Just pure software rendering mode.
Thought my system might have gone buggy but a PCIe Radeon runs fine. The typical fixes liek driver re-installs, cleaning, registry strips/reinstalls, etc, etc have produced nothing.
The display is immaculate but dropping to 2 FPS in software rendering mode during bechmarks doesn't cut it!
Ya got any idea's??? Really quite clueless here at the moment.
Viper
What if you undo the mod?
Mine was doing that on and off also. What I had found was that I was running 31C which occasionally worked and sometimes didn't. I hadn't flashed the bios. Maybe if you didn't flash and are borderline on temps. that could be the problem. :)Quote:
The display is immaculate but dropping to 2 FPS in software rendering mode during bechmarks doesn't cut it!
Already done but this is not mod related. This is something else. My first though was I disabled something accidently but can't find anything and the computer was shutdown at the.Quote:
Originally Posted by Vapor
I thought maybe my system dorked itself but a Radeon still runs like a cat with it's ass on fire. All accelerations setting are still enable but the card is just stuck in software rendering mode.
Viper
Temp are fine. Heck they would be SF rendering as there is virtually no load on the GPU. The card has been flashed several times.Quote:
Originally Posted by harleybro
Viper
So very very weird...what about OCing it? Does that help (you know, force 3D clocks might force 3D...)?
Oh the card is clocking up to 3D clocks and voltage are ramping up to spec as well when entering 3D mode. It just doesn't use it's hardware to do the work and runs software rendering mode instead. It has a beautiful display but is just slower than frozen molassis running uphill in the acrtic during winter!Quote:
Originally Posted by Vapor
Just fire up 3DM01se and set it to use Software Rendering instead of Pure Hardware Rendering and you will see what I mean. The difference here is the card won't hardware render when told to.
It is very odd to say the least.
Viper
Here are the as modded Vcore pictures. The trimmer is a 200 ohm, 25 turn and gives a .050
Vcore bump at full resistance. Adjustment is extremely smooth with very high resolution.
.001 volt changes are easy to dial in.
The Vcore metering point is the clip post soldered at C792 in the 3rd picture.
Viper
Very Nice ViperJohn, any idea if there's a ovp kicking us when giving too much volts to the core?Quote:
Originally Posted by ViperJohn
I am sure there will be a point where that would happen but it would probably be a lotQuote:
Originally Posted by VoRtAn_MaDgE
higher than any sane (read that actually improves your core OCVcore setting you dial in.
If you run a fanless GPU cooling solution like (like WC for example) you do need the get a
fan to cool the on-card power supply area. It will run insanely hot without the air flow
from an air colled GPU cooler. Hell some parts in the PS area run insanely hot stone
stock in 3D mode!
Viper
I had the same idea about the ovp, not like the ati cards that we really need "killing" him to raise the gpu oc!Quote:
Originally Posted by ViperJohn
About the heat of the pcb of the card, i realize that when i was reading the values of the multiphase controller of the card, really hot indeed!
Guess it would be a nice solution if we spot the "hottest" parts of the vga components and put some good ramsinks on them's...like mainboards...airflow surely will improve stability in oc...waterblock cools down the gpu core and the airflow will cooldown the pcb and its components!
With FairChild FAN5240 Vcore regulator on the Radeons OVP is fixed intermally at 2.35 volts so nothing needed there. You are probably refering to the Over Current Shutdown Timer Setpoint mod at R1596 on the x800 AGP cards. It is and was never needed either.Quote:
Originally Posted by VoRtAn_MaDgE
Without modding those card would going into Dynamic Vcore Current Limiting by clamping the loaded Vcore at less the 1.600 volts if the regulator was running within spec. You deal with that at R1597 and R1603. Those mods are covered by an NDA and are not published anywhere.
Viper
As many here know my father has been the hospital under intensive care since Friday of
last week.
I just wanted to take the time to say Thank You to everyone who emailed with well wishes
and support and to inform them that at 10:15 PM on 7/8/05 my father slipped the surly bonds
of earth to join hands with god and take his final journey to heaven.
John Hillig
aka
ViperJohn
It's a bug in the temperature protection system which works when the card is too hot AND too cold (30 - 35'C):Quote:
Originally Posted by ViperJohn
http://www.tomshardware.com/hardnews...07_151857.html
<shudders as he posts a link to TH>
I think a BIOS flash fixes it on some XFX cards.
PS - I am truly sympathetic about your father.
Thanks about my dad.Quote:
Originally Posted by Jimbo Mahoney
The card is running around 50C. The bug will cause a car to throttle back to the LP 3D clock. This is different. The card is running full HP 3D clocks. It is just not rendering using it's hardware.
Viper
was thinking of doing a vmod to my new 7800 when it gets here, but i might hold off untill this issue is fixed. sorry to hear about your dad. and the best of wishes.Quote:
Originally Posted by ViperJohn
nice mod there, does lower resistance give ya higher vGPU?Quote:
Originally Posted by ViperJohn
victor
Yes.Quote:
Originally Posted by Victorshen
Viper
I recently lost someone who meant more to me than the world. I can empathize for you, and you have my deepest condolences for your loss.Quote:
Originally Posted by ViperJohn
Really sorry to hear that ViperJohn, my most sincere condolences.Quote:
Originally Posted by ViperJohn
Hi John.
Sorry to read about your father passing away.
Take care
Brian
This is all great stuff but I see nothing about possible OC's with the volt mod....
Any results yet on whether or not the increased memory voltage allowed for a higher stable frequency?
ok for a lower resistance for more volt, but here:Quote:
Originally Posted by Malves
http://www.xtremeresources.com/forum...ad.php?t=37362
i read this:
who has reason? on FX5600 whit intersil Vdimm it was lower resistance max VdimmQuote:
The Vmem mod is a 100K, 25 turn trimmer and will kick the Vmem up from 2.080 stock to 2.165 at the Windows desktop when set at 100K.
The Vcore trimmer is 200 ohms and gives a .050 bump up in Vcore at the Window Desktop when set at 200 ohms
10X guys :toast:
wasky
Quote:
Originally Posted by ViperJohn
*
my thought is for you Viper John
condolences
roberto
Quote:
Originally Posted by wasky
They are saying the same thing. What I wrote about the voltage is what is
obtained with the trimmers set max resistance from the start. If you want
more voltage just lower the resistance of the trim pop while metering the
target voltage when idling at the Windows desktop.
John
so sorry to hear about your father john...best wishes to you and your family.
about the vmod what kind of volts are you expecting to get from this?
10X Viper John :)
wasky
I have tried the gpu volt mod on a few cards and it does allow for higher clocks. I went from 540 to about 600 on one card and that is on air. I ended up around 1.58 volts and I am sure it would go higher if the card had better cooling.Quote:
Originally Posted by freecableguy
I have yet to try the memory volt mod since I heard it doesnt really help that much and I can get 1450+ out of one of my cards without a mod.
Gryph
Thanks. Now it is my mothers turn. She entered into the Hospice care system today.Quote:
Originally Posted by IYP
The voltages you can get with the mods are enough to fry the cards with you wound them tight enough.
John
10x :p:Quote:
Originally Posted by wasky
So this mod for gpu is confirmed?
:confused:
I find this on my own...can we mod each voltage seperate this way??? :confused:
You do not mod at the VID pins.Quote:
Originally Posted by cadaveca
Viper
no, on the sense lines, i mean. there are 3 vid pins, and three sense pins connected, as well as 3 voltages...2d, low power 3d, and high power 3d. i'm saying mod the sense line for the corresponding VID. i don't know much about power design, but there is a place ther that can be modded just before the sense pin.
but nevermind i understand why. vid5 and 0 are constant. why bios mod does not work, i guess.
Actually there are 6 VID pins. The way NV has the VID's setup to switch you can't get 1.500 using bios. Only 1.2, 1.3 and 1.4.Quote:
Originally Posted by cadaveca
Viper
my brother fried his 7800 because of this thread. he should of done more research before he did it, as this thread is limited in the helpfull department.
Any volt mod is done at your own risk. I have done this exact volt mod on four of my cards and I still havent fried one. You must have adequate cooling on the whole card expecially the voltage regs. If you set the trimmer all the way to the max resistance you will get about 1.49v on the gpu the less resistance you dial in the more voltage you will get. I have ran my cards up to 1.65 volts but after I am done my tests I always back it all the way off to 1.5volt. The cards dont seem to like booting when the voltage is too high. The first time I got up to 1.58volts and I had to restart for other reasons I forgot to back off the voltage and it locked up as soon as the driver loaded and the voltage went up to 1.58 volts. SO if you think you want to overclock your card dont do the volt mod unless you are willing to fry it and void your warranty.
Gryph
Your brother fried his card not from the info in this thread but from incorrect or miss use of that information.Quote:
Originally Posted by happyhero
Viper
uh, yeah...0,1,2,3,4,5 is six... :confused: only 1,2,3 seems connected tho, so the others are constant...i think. need one of those fixed others to make 1.5, correct?Quote:
Originally Posted by ViperJohn
what i was wondering was if the sense pins were actually sensing the three power modes or not, and whether it could be modded that way, in your opinion. you know more about gpu power implmentation than i do, so i'm not too sure what it is that the sense pins are sensing really...could be the output matched to what the VID says, in which case a resistor thrown in there might help the transition from 2d to 3d?!? :confused:
of course, i am confused.... :rolleyes:
Found another piece of info through google.. Not sure if it helps any
Intersil (Milpitas, CA) will demonstrate the ISL6592 digital multiphase PWM controller IC, which can drive up to 6 synchronous-rectified buck converter channels in parallel. The device enables designers to minimize the number of off-chip components and features an I2C interface, active transient response, programmable fault levels, and a line and load accuracy of ±14 mV. (Booth #13, Circle xxx)
http://www.electronicproducts.com/im...02INTE0904.gif
The evaluation board for the ISL6592 digital multiphase PWM controller IC
http://www.gogar.com/evalboard.png
If i untick all 6 VID checkboxes at the bottom it says 1.550 volt.
VID5 seems to have no effect.
4 3 2 1 0
------------------
0 0 0 0 0 1.550v
0 0 0 0 1 1.525v
0 0 0 1 0 1.500v
0 0 0 1 1 1.475v
0 0 1 0 0 1.450v
0 0 1 0 1 1.425v
0 0 1 1 0 1.400v
0 0 1 1 1 1.375v
0 1 0 0 0 1.350v
0 1 0 0 1 1.325v
0 1 0 1 0 1.300v
0 1 0 1 1 1.275v
0 1 1 0 0 1.250v
0 1 1 0 1 1.225v
0 1 1 1 0 1.200v
0 1 1 1 1 1.175v
1 0 0 0 0 1.150v
1 0 0 0 1 1.125v
1 0 0 1 0 1.100v
1 0 0 1 1 1.075v
1 0 1 0 0 1.050v
1 0 1 0 1 1.025v
1 0 1 1 0 1.000v
1 0 1 1 1 0.975v
1 1 0 0 0 0.950v
1 1 0 0 1 0.925v
1 1 0 1 0 0.900v
1 1 0 1 1 0.875v
1 1 1 0 0 0.850v
1 1 1 0 1 0.825v
1 1 1 1 0 0.800v
1 1 1 1 1 0.000v
First of all i'm a complete noob in this area.. so please don't shoot me..
I don't know exactly which voltages the card sets.. assuming it's 1.1 1.2 1.3 and 1.4 volt
Cutting vid 1 and 2 would cause it to set 1.55 volts whenever it tries to use 1.4v
and when it tries to use 1.1v the voltage would be 1.15. For 1.2v and 1.3v the voltage would be 1.350v.
Anybody got a clue if what i'm thinking could be correct???
Another thing..
Key Features
Multiphase power conversion
2- to 6-phase operation
300kHz to 1.5MHz switching frequency
Supports Intel® VR 10.x, AMD®, and custom VID codes
Internal high precision voltage reference
±5mV voltage setpoint accuracy
Precision digital current sense calibration
±14mV loadline accuracy
Precise digital current balancing with programmable offsets for thermal balancing
Digitally programmable loadline and loop compensation
Differential voltage sense
Digital temperature sensor compensation
Active Transient Response (ATR) enables meeting transient requirements with reduced output capacitance
I2C interface for monitoring, control and configuration
Internal non-volatile memory (NVM) to store custom configurations with four programmable system configurations
Extensive fault detection capability with two user configurable output fault pins
Input Undervoltage
Output Under/Overvoltage
High Side Short
Per Phase and Total Output Current
Multiple Internal and External Temperature Limits
NVM Configuration
Calibration Range and Time-Out
Configurable latched fault or autonomous recovery shutdown
Single +3.3V supply operation
48 lead LQFP plastic package
Commercial temperature range of 0°C to 85°C ambient
See that? I2C interface for monitoring, control and configuration
Internal non-volatile memory (NVM) to store custom configurations with four programmable system configurations
iirc the pc itself has an I2C bus, maybe hooking it up together will allow the utility you can download from intersil's site to communicate with the chip. The pins for the I2C bus should be SDA (pin 44) and SCL (pin 45).
More about I2c busses here
Now i just gotta find where the I2C pins spring from on the motherboard... Nforce4 chipset? Even if i knew that.. it's a BGA package.. On the Ultra-D what chip(s) does the I2C bus run to?
well i did tell him not to vmod it untill there is a guide on how to do it successfull. i am going to do my card as soon as i have enough knollege, still waiting for some one to make a guide some where on the net. over at extreme resources they know how to do the volt mod but won't tell any one.Quote:
Originally Posted by ViperJohn
EDIT: just found malves vmod guide and it looks good to give it a try.