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Prime95 stable for +7h, but getting a stuuter/freeze in some games

post #1 of 7
Thread Starter 
Here's what I set up this morning





In the BIOS I used

14x240 = 3.36GHz @ 1.4V, up from 1.38
10x240 = 2.4GHz NB/CPU @ ~1.241V, up from ~1.2V
and 1333 ->1600 RAM, @1.425V, up from 1.39 (gskill ecos use 1.35)

The computer and me were asleep for ~2h, so prime95 was running for ~7h


BFBC2 seems fine.

GTA 4 is jumping, especially in the benchmark, where it still got ~25fps, but it doesn't look like it with the stuttering. Also even just the loading screen where the characters pictures are moving relative to the background, that stutters???

Far Cry 2 averaged high 20s, but it too has that same type of stutter/freeze, and its in the game play too. Its not very noticeable or dramatic, but its there.


I haven't ran memtest, I set the 7-8-7-20-36 2T myself.

Also what about the NB chip voltage, or the PCIe frequency setting thats at 100, and can go to 150.
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post #2 of 7
Vid cards the culprit by chance?
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post #3 of 7
Thread Starter 
It never happened at stock CPU, and the RAM was set about the same then too.


and also in the GTA4 benchmark, the CPU usage was 51%, and in FarCry2, it was less, the CPU temp was only 35C, compared to 45C in prime.
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post #4 of 7
Try stepping your ram down.. If its rated at 1333, 1600 is a tough one to get stable. Or On My MSI board there is a secret for getting ram stable when its oc past 1333 The ddr-phy step it up a notch or too.. Helps with the vdroop. Not sure if it works on your board though..
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post #5 of 7
could be not quite enough voltage... if you can run a benchmark that will show you, test you gflops and then give a single bump up in voltage to cpu and see if your score improves.
    
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post #6 of 7
Thread Starter 
Quote:
Originally Posted by G.E.Nauticus View Post
Try stepping your ram down.. If its rated at 1333, 1600 is a tough one to get stable. Or On My MSI board there is a secret for getting ram stable when its oc past 1333 The ddr-phy step it up a notch or too.. Helps with the vdroop. Not sure if it works on your board though..
The RAM is g skill DDR3 1600 eco at 1.35V, and is advertised as 7-8-7-24-2N, I don't know where to set 2N, and just choose 20-36

CPUZ timing table says to use 7-8-7-24-40 2T

I just went back to stock CPU but left the RAM, smae problems...
Now I will set the RAM back to 7-8-7, and auto the rest.


Now I will set the RAM back to 7-8-7, and auto the rest, the BIOS chooses 24-20 1T

And I tried stock GPU 775/4000, and lastly DX9 in Far Cry2, same problem.

If its a hardware problem, I hope its my GPU, as everything else is brand new, just built it 2 weeks ago.
Edited by Mit Namso - 1/13/11 at 12:33pm
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post #7 of 7
since its a be, what is your max oc with the multi only ?
my unlocked 720 will run 3.4 all day on 1.45v at a 'cool' fixed 52C
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