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The Socket 939 Appreciation Club and Knowledgebase [Official] - Page 1732

post #17311 of 28751
Well, I increased the HTT and decreased the CPU multi as well as the vcore. Currently running Prime95 in-place large FTT's at 264 MHz x 11 = 2904 MHz @ 1.45 volts and everything seems to be running ok. I know it's only a couple hundredths of a volt decrease but every little bit counts, I guess. I tried decreasing the vcore some more but Prime95 flipped out. Guess this chip likes the juice...

I want the big 3.0 bad, though...
post #17312 of 28751
If the temperatures permit it, there is no reason why you cannot try a fuzz higher to get to the 3.0 GHz mark... maybe 10x300 DDR-333 will be the way to go. (3.0 GHz with DDR-500; DDR-266 will yield DDR-400.)
     
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post #17313 of 28751
Quote:
Originally Posted by blitz6804 View Post
If the temperatures permit it, there is no reason why you cannot try a fuzz higher to get to the 3.0 GHz mark... maybe 10x300 DDR-333 will be the way to go. (3.0 GHz with DDR-500; DDR-266 will yield DDR-400.)
post #17314 of 28751
Quote:
Originally Posted by decimate View Post
Well, I increased the HTT and decreased the CPU multi as well as the vcore. Currently running Prime95 in-place large FTT's at 264 MHz x 11 = 2904 MHz @ 1.45 volts and everything seems to be running ok. I know it's only a couple hundredths of a volt decrease but every little bit counts, I guess. I tried decreasing the vcore some more but Prime95 flipped out. Guess this chip likes the juice.
Decimate, is there any options in the bios related to "Spread Spectrum"? If so please disable them. A pretty obvious question here but did you disabled Cool'n'Quiet?
I would say try adjusting your ram sub-timings and other settings to the "T" but it's ValueRAM. There is hardly any documentation out there for valueram. When I mention "other settings" I'm referring to (for example), Idle Cycle Limit, Burst Length, MTRR Mapping ect ect ect. Basically the optimum timings/settings. Are you currently running a command rate of 1T or 2T?

Good luck
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post #17315 of 28751
Cool N' Quiet has been disabled. I don't think I saw any "Spread Spectrum" in the BIOS. The RAM is currently running on a divider of DDR266, so at 264 MHz HTT, it's running well below DDR400. Command rate is 1T and timings are 3-3-3-8, so I'm pretty sure my RAM is running stable unless Kingston binned some terrible terrible chips that can't even run below their rated speed. I don't think it's my mobo either because i've gotten well over 280 MHz HTT when my CPU multi was lowered to its minimum.

I was able to boot into Windows at 280 MHz x 10.5 (2.94 GHz) @ 1.425 volts with 3x HTT multi but Prime95 told me to piss off. Tried 1.45 vcore, same thing. I'm wary of increasing vcore any more because if I do my PWM temps will breach the threshold. I tried increasing NB voltage and HTT voltage as well as a combination of them, but those didn't help so I set them back to default. Also, to be honest, I think my PSU may be holding me back...powering 2 2900XT's and a 150 GB Velociraptor isn't doing it any favors when I go to increase vcore...The system has shut down several times upon increasing voltages, so I really think I've reached its limit...
Edited by decimator - 7/23/09 at 11:08am
post #17316 of 28751
you need to loosen mem timings when trying to find your highest htt.
post #17317 of 28751
Even if they're running on a divider?
post #17318 of 28751
Quote:
Originally Posted by decimate View Post
Also, to be honest, I think my PSU may be holding me back...powering 2 2900XT's and a 150 GB Velociraptor isn't doing it any favors when I go to increase vcore...The system has shut down several times upon increasing voltages, so I really think I've reached its limit...
Decimate, for testing purposes remove one of the 2900XT's to see if you can reproduce this problem (shutdowns after increasing Vcore). Your PCP&C has 60A total on the 12volt rail. That is quite a bit in my opinion but then again the 2900XT is a power hungry card

Quote:
Originally Posted by decimate View Post
Even if they're running on a divider?
That's correct. Relax the sub-timings and re-test. Are you running 1T or 2T command rate?

Good luck
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post #17319 of 28751
Ok. I'm running a 1T command rate right now. Should I loosen it to 2T?
post #17320 of 28751
Quote:
Originally Posted by thlnk3r View Post
Decimate, for testing purposes remove one of the 2900XT's to see if you can reproduce this problem (shutdowns after increasing Vcore). Your PCP&C has 60A total on the 12volt rail. That is quite a bit in my opinion but then again the 2900XT is a power hungry card.
I don't think that should be an issue unless his PSU is going out. As his PSU is the same as mine (amperage wise, which ran 2 x 2900Xt's just fine with a x2 4000+ 90nm)

The only difference is I have a Quad Rail (a single 12v line split up into 4 separate lines) and he has a single rail ( 1 12v line going out to every direction as needed)
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