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Gaming PC stuttering in games

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March 23, 2010 5:33:21 PM

I recently built a gaming PC late 2009, and from the start I had problems with it. Now every game I seem to start up stutters or pauses for half a second every once and a while. Here are the specs:

Intel Core i7 950 Quad-Core 3.06GHz
Cooler Master V8 CPU Cooler
OCZ DDR3 PC3-12800 Gold 6GB
EVGA X58 SLI
Western Digital VelociRaptor 150GB
LG Blu-Ray DVD Combo Drive
Cooler Master HAF 932 Full Tower ATX Case
EVGA GeForce GTX 275 Superclocked x2 (SLI)
Thermaltake Toughpower VGA Power Express 650W (Running both video cards)
Microsoft Windows 7 Pro 64-Bit
Mushkin XP-650AP 650W ATX Enhanced

So far I have tried:
- changing PCI slots
- running it with one GTX 275
- running different memory
- swapping out power supplies

I ran memtest, hard drive tests, OCCT and prime95. Everything is working properly except my CPU failed prime95 AND OCCT after 1 - 11 minutes on several cores each time. Could this be the problem? Any insight on how to fix this would be helpful.
March 23, 2010 8:20:39 PM

You are doing OC ??

Tried conservative timings ???

Disable drive indexing? (right click on drive).

Search "Windows Performance Tweaks"

It has something to do with memory bandwidth, storage bandwidth or Video Drivers ...

... If you don't have the latest nVidia drivers ... GET THEM ... nVidia just "copped" to bad driver issues and the old "new drivers" were causing cards to burn up ... And I DO MEAN your 275 ! ROLL BACK, or UPDATE (if available).

= Al =
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March 23, 2010 8:27:03 PM

What are your idle/load CPU temps? It's not normal at all for Prime95 and OCCT to fail. My guess is that the HSF isn't installed correctly and the CPU is overheating.
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March 23, 2010 8:37:05 PM

... right ... I defer to SS ... 'Cept for the video drivers.
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March 23, 2010 8:41:40 PM

shortstuff_mt said:
What are your idle/load CPU temps? It's not normal at all for Prime95 and OCCT to fail. My guess is that the HSF isn't installed correctly and the CPU is overheating.


Idle load temp ranges from 38 - 43 degrees
Full load temp is about 50 - 55 degrees
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March 23, 2010 8:47:16 PM

Drivers,drivers,drivers - its always drivers. Update, rollback, reinstall,un-install. Whatever gets the job done.
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March 23, 2010 8:51:59 PM

Have you manually set your RAM to 1600MHz with 8-8-8-24 timings at 1.65v? I know you said you ran Memtest, but you didn't say for how long. Memtest86+ is great at detecting faulty RAM, but often will not fail if the BIOS settings are not correct. You should manually set all the RAM values in the BIOS and let Memtest86+ run overnight for at least 8 hours.
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March 23, 2010 9:10:27 PM

shortstuff_mt said:
Have you manually set your RAM to 1600MHz with 8-8-8-24 timings at 1.65v? I know you said you ran Memtest, but you didn't say for how long. Memtest86+ is great at detecting faulty RAM, but often will not fail if the BIOS settings are not correct. You should manually set all the RAM values in the BIOS and let Memtest86+ run overnight for at least 8 hours.


Yes the RAM was manually set to 1600MHz, along with the timings. I'll run memtest overnight and see if anything changes.
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March 23, 2010 9:11:41 PM

What about the RAM voltage? That has to be manually set as well as the speed and timings.
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March 23, 2010 9:18:16 PM

shortstuff_mt said:
What about the RAM voltage? That has to be manually set as well as the speed and timings.


Yep, the voltage was set manually as well to 1.650V.
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