Phenom 9950 Overclocking

[Rammsteiner]

A little bit of a small positive update

Im running 30minutes stable now with RAM at 3:5 240 4-4-4. 30 minutes ain't a lot, but in my case it broke the record by an easy 600%

So what did I do? Set all tRFC values to 127ns *sigh* Maybe I might try to run the RAM again at 2:1 if I can fix the past issues with tRFC tweaking.

Does anyone know if the recommended 195ns tRFC is for 1066 mode only or in general for 1066 speed? Since there's a difference between running 8:3 200Mhz and 2:1 266Mhz for example

[Rammsteiner]

Interesting. Previous settings above weren't stable either.

I noticed this before, my errors always happened after a certain time line. With changing tRFC to 127ns I only extended it from ~5 minutes to ~50 minutes. However after two times of trying with tRFC 127ns they both indeed had one thread fail after 50minutes.

Dont ask me why, but I decided to decrease my HT multiplier, in fear my whole HTT OC would become instable, to 9 instead of 10. Guess what... It's running for 2hours rock solid, with eventual browsing now and then etc...

So... How? Why would changing tRFC influence HT instability? Why does HT instability occur after the same time line? Is it maybe test dependend?

It's weird, but at least this gives me a lot more 'hope' Im not wasting my time again like I did on the 'quest' for idle stability on the old SB600/9850BE setup.

[gOtVoltage]

Hmm,, I left my TRFc and all other settings Auto for ram except for making shure 1066 mode was enabled..

The first time ive decided to use only 2000NB and 2000HT...

I may have a odball chip ,, it likes Low or Stock HT/NB for High Clocks with ram Above 1100mhz...Im still testing ..

Also @ 1.67vcpu and 1.65vnb ,, The 79-T auto adjusted my VID to 1.46volts..

CPU voltage 1.67v
NBcpu voltage 1.65v
HTT 2.8v
CORE 1.3v
SB volts Auto

When i use 1.65v for both CPU/NB it was allways 1.55vid..

ACC is off..So i think the mobo self adjust ACC maybe once you go past a certain point..The 502 bios does this too...flashed back to 403,, result is the same for both Bioses ..

Supi is 1M is 22.5's with my timing loose.
So far since getting the 79-T and using 9950 140watt 0820...Ive have been able to slowly tweak the cpu Above 3.5ghz with high freqency 1100mhz+Ram .. I Have not tried fooling with the Advanced timing settings yet..

Thus I Only changed basic timing from 6-7-7- to 5 - 7 -7 - 2T ganged ,,

Notice how the ram went from 6-7-7-30 to 5-7-7-20 wierd when i only changed the first three timing figures.

[Rammsteiner]

K, Im done now with this crap.

Testing 15x200 now, NB at 11x, HT 10x and RAM 2:1. If that passes overnight Im happy.

Right now it's so random. One point I run prime 95 for 2.5hours without errors, next moment within 5 minutes. RAM has something to do with it, be it incompatibility or wrong timings, I dont know.

If this passes Ill try my RAM once again. I want at least DDR800 4-4-4 stable, if possible higher speeds as well.

Thinking of playing with HTT of 223 or 231 since that shows the best optional result for CPU, NB, HT and RAM... If I figure out what's being a retarded failure in this setup right now that is.

[ChrisB17]

Ok I got my phenom overclocking through my bios now. I got 3.2ghz so far. But in my bios the min alowed voltage for CPU-NB is 1.650. Is that a glitch? AOD tells me its 1.3 what other program will tell me what volts it really is?

[demonkevy666]

Hmm,, I left my TRFc and all other settings Auto for ram except for making shure 1066 mode was enabled..

The first time ive decided to use only 2000NB and 2000HT...

I may have a odball chip ,, it likes Low or Stock HT/NB for High Clocks with ram Above 1100mhz...Im still testing ..

Also @ 1.67vcpu and 1.65vnb ,, The 79-T auto adjusted my VID to 1.46volts..

CPU voltage 1.67v
NBcpu voltage 1.65v
HTT 2.8v
CORE 1.3v
SB volts Auto

When i use 1.65v for both CPU/NB it was allways 1.55vid..

ACC is off..So i think the mobo self adjust ACC maybe once you go past a certain point..The 502 bios does this too...flashed back to 403,, result is the same for both Bioses ..

Supi is 1M is 22.5's with my timing loose.
So far since getting the 79-T and using 9950 140watt 0820...Ive have been able to slowly tweak the cpu Above 3.5ghz with high freqency 1100mhz+Ram .. I Have not tried fooling with the Advanced timing settings yet..

Thus I Only changed basic timing from 6-7-7- to 5 - 7 -7 - 2T ganged ,,

Notice how the ram went from 6-7-7-30 to 5-7-7-20 wierd when i only changed the first three timing figures.

are you using two sticks or one

or ganged vs unganged...

and if it's one stick

I have heard of something like where NB is 2 times the memory speed = better performance so 1,000mhz ram plus 2000mhz Nb = higher scores. I'm not really sure about that...

[gOtVoltage]

Two sticks of Patriot Viper 9600's,,
This Mobo didnt like my Dominators ..I could not clear cmos and boot unless i removed the Dominators and put in other ram too boot and adjust Ram volts.. i no longer have to do that with the Viper's...

Viper 9600 ,,2x1gig dual channel kit. 2.3volts

Ganged Mode

Note :
Raising the NBchipset volts helps to stabilize ram ...On my Mobo its the CORE/PCIe volts.. On GX's i believe its CPU to NBchipset volts

Either way find out what sets the NBchipset volts and use 1.28- 1.32v its a safe range..ive tested on SB600/SB700/GXsb750/FXsb750

Also running the CPU/NBvoltage around 1.35- 1.45v helps when using high NB2400mhz

Phenom is not easy to tweak by all means..Just when you think your done theres something else to change to go higher.

Lastly if your ram isnt clocking High Use Stock timing or auto for timing and amanually set the divider your going to use untill you have reached your CPUclock goal..then tighten the ram timings one at a time..Some settings work some wont ,, it does take time with phenom thats why i use 5-5-5-timing or higher..4 or below is tuff for 800mhz+ Phenom does like high freqency ram with medium timing uless you are keeping it under 800mhz..At least that what ive found out anyway.

[Titan7171]

K, Im done now with this crap.

Testing 15x200 now, NB at 11x, HT 10x and RAM 2:1. If that passes overnight Im happy.

Right now it's so random. One point I run prime 95 for 2.5hours without errors, next moment within 5 minutes. RAM has something to do with it, be it incompatibility or wrong timings, I dont know.

If this passes Ill try my RAM once again. I want at least DDR800 4-4-4 stable, if possible higher speeds as well.

Thinking of playing with HTT of 223 or 231 since that shows the best optional result for CPU, NB, HT and RAM... If I figure out what's being a retarded failure in this setup right now that is.

are you setting both??

[pershoot]

are you setting both??

he's running a dfi 790fxb-m2rsh. dual entries for CAS won't be listed in the bios.

[charged3800z24]

he's running a dfi 790fxb-m2rsh. dual entries for CAS won't be listed in the bios.

On my K9A2 Plat, If running Ganged mode you will have only one set of timings..and unganged you get 2 sets of times.. for CAS as well...I wonder why that board is different?

[ChrisB17]

Ok I got my phenom overclocking through my bios now. I got 3.2ghz so far. But in my bios the min alowed voltage for CPU-NB is 1.650. Is that a glitch? AOD tells me its 1.3 what other program will tell me what volts it really is?

I checked everest now and I still dont see 1.6 v.

[zif33rs]

Trying some benching at 3.54ghz....little unstable atm but working on it

[Rammsteiner]

Note :
Raising the NBchipset volts helps to stabilize ram ...On my Mobo its the CORE/PCIe volts.. On GX's i believe its CPU to NBchipset volts

Either way find out what sets the NBchipset volts and use 1.28- 1.32v its a safe range..ive tested on SB600/SB700/GXsb750/FXsb750

You're talking about the motherboard NB here? Interesting if you're indeed

Also running the CPU/NBvoltage around 1.35- 1.45v helps when using high NB2400mhz

By accident I set 1.45Vnb, I was afraid it actually might hurt the NB. Does the NB handle the same max Voltage as the CXPU, 1.55V?

Phenom is not easy to tweak by all means..Just when you think your done theres something else to change to go higher.

No Very fun though! Although sometimes frustrating when you're lost with what setting you got to tweak.

it does take time with phenom thats why i use 5-5-5-timing or higher..4 or below is tuff for 800mhz+ Phenom does like high freqency ram with medium timing uless you are keeping it under 800mhz..At least that what ive found out anyway.

If that's indeed so Ill try and get back to using DDR1066 mode. Im running 4 DIMMs though, which might make things a little bit harder. Did you tweak, if you have any, Drive Strength timings? Could you eitherway load up AOD with your OC'd DIMM's and not what the Drive Strength settings are?

Thx in advance.

are you setting both??

http://i271.photobucket.com/albums/j...g?t=1225843468

I dont have that option, settings always are for all DIMMs. I can only change Channel settings for Drive Strengths.

[RASTAVIPER]

Guys, I am wondering how much can I increase the vdimm and not create any problem to the IMC of 9950.
I had heard that if you put more than 2.1 vdimm, then the IMC starts to die.
Any opinions on that?I want to know if I can give the normal voltage that my Cellshock want (rated 2.1-2.3)!!

[Chicken Patty]

Guys, I am wondering how much can I increase the vdimm and not create any problem to the IMC of 9950.
I had heard that if you put more than 2.1 vdimm, then the IMC starts to die.
Any opinions on that?I want to know if I can give the normal voltage that my Cellshock want (rated 2.1-2.3)!!

i give mine 2.2v which is what my Tracers are rated at. Shouln't be a problem at all.

[gOtVoltage]

i give mine 2.2v which is what my Tracers are rated at. Shouln't be a problem at all.

2.3volts no prob.. 1200mhz Vipers and Dominator 1066 Microns version 1.2 @2.2- 2.3volts.



NB volts on the CPU can do up to 1.55vid or 1.65volts if you have the cooling to do so...ive maxed both on the NB @ 2650-2700mhz.

Id post AOD screen of ram timming ,, but i really hate AOD.. it can cause problems with out even running it sfter installing it... So i do not use it unless i have to check (HT link widths.. and or NB linkwidth.)(PCI-E link widths) that is all

I dont need my PC to have AnotherOverDose ...

[Chicken Patty]

2.3volts no prob.. 1200mhz Vipers and Dominator 1066 Microns version 1.2 @2.2- 2.3volts.



NB volts on the CPU can do up to 1.55vid or 1.65volts if you have the cooling to do so...ive maxed both on the NB @ 2650-2700mhz.

Id post AOD screen of ram timming ,, but i really hate AOD.. it can cause problems with out even running it sfter installing it... So i do not use it unless i have to check (HT link widths.. and or NB linkwidth.)(PCI-E link widths) that is all

I dont need my PC to have AnotherOverDose ...

For me AOD causes my system to hang sometimes. Even at default settings. Does anybody else have that problem?

[Titan7171]

For me AOD causes my system to hang sometimes. Even at default settings. Does anybody else have that problem?

Here is how I use AOD

I set my system to overclock 90% of what I need it to through the bios then I use AOD for that last bump through windows

So from the bios I set 260x12.5@1.4v........then when I get into windows I load up 264x12.5@1.43v through AOD

I noticed that if I have cpuz open and try to load AOD sometimes Ill get a hard lock so now I open AOD first then all the other monitoring applications and I havent had a problem.

[RASTAVIPER]

Guys I am talking about 24/7 use with 2.2-2.3
Anyway, I runned some tests and at 4-4-4 I managed to get a 21.48 at 3.6g in S.PI.
It's not bad for water.

[Chicken Patty]

Here is how I use AOD

I set my system to overclock 90% of what I need it to through the bios then I use AOD for that last bump through windows

So from the bios I set 260x12.5@1.4v........then when I get into windows I load up 264x12.5@1.43v through AOD

I noticed that if I have cpuz open and try to load AOD sometimes Ill get a hard lock so now I open AOD first then all the other monitoring applications and I havent had a problem.

thats what I was started to notice too! it has to do with CPUz.

Oh and I do that too, load my settings in the bios, and then the final bump in windows.

[gOtVoltage]

Guys I am talking about 24/7 use with 2.2-2.3
Anyway, I runned some tests and at 4-4-4 I managed to get a 21.48 at 3.6g in S.PI.
It's not bad for water.

24/7 for 3months @ 2.3volts and 3.5ghz@1.65+volts with 2600nb@ 1.65+volts....So the IMC can handle it trust me...

Most Ram problems can and are mostlikely caused by not enuff volts from the CPU/NB/IMC to memory.. The More ram or Higher freqency used the MORE the NorthBidge CHIPSET must be raised (stability is night and Day and so will the Max OC stablility) .

The only time i ever ran below (2.3v on the Ram) was when testing a new pair or forgot to change it after a flash.

P.S. Nice run by the way..I wish i had 3.6ghz with this one...45nm will be fun ..I cant wait to Volt torture it.

[SkullCracka]

24/7 for 3months @ 2.3volts and 3.5ghz@1.65+volts with 2600nb@ 1.65+volts....So the IMC can handle it trust me...

Most Ram problems can and are mostlikely caused by not enuff volts from the CPU/NB/IMC to memory.. The More ram or Higher freqency used the MORE the NorthBidge CHIPSET must be raised (stability is night and Day and so will the Max OC stablility) .

The only time i ever ran below (2.3v on the Ram) was when testing a new pair or forgot to change it after a flash.

P.S. Nice run by the way..I wish i had 3.6ghz with this one...45nm will be fun ..I cant wait to Volt torture it.

same here ram v@2.2 since i first fired it up 8 months ago. 1.5v on nb and cpu running 3ghz and 2400 on nb. vista ultimate 64.

[demonkevy666]

same here ram v@2.2 since i first fired it up 8 months ago. 1.5v on nb and cpu running 3ghz and 2400 on nb. vista ultimate 64.

you and me are the only ones venture in the hell of OC in 64 bit I need 1.625 for 3.0ghz.

I'm not on water only air/

[SkullCracka]

you and me are the only ones venture in the hell of OC in 64 bit I need 1.625 for 3.0ghz.

I'm not on water only air/

WOW sheesh thought my chip was ruff. same as you i have a 9850

ya you right about the 64bit being ruff and tuff on the OC.

[zif33rs]

i should load xp on another drive...make it dual boot. wonder if this chip could get over 3.6ghz. Ive been running 64bit Vista and am stable at 3.3ghz at 1.488v this is a 140w version...not the newer 125w. ive had it boot at 3.6ghz but froze trying to save the screenie. max boot has been 3.54ghz at 1.575v

watercooled btw..


zif