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OCing E8500(C0) on GA-EP45-DS3R

Last response: in Overclocking
November 24, 2008 10:42:22 PM

This is my first time overclocking and I'm having some problems. First of all I'm not doing a huge overclock. Just upping the FSB from 333 to 400 (3.8GHz). I took a look at the guide and it has helped me a ton but I'm having some issues with the voltages. First of all I set the Vcore to Auto and everything booted up okay but when I ran prime95 it gave me errors after only 2 hours. I upped the Vcore by 15(I think) mV(1.325000 in the BIOS), ran p95 for 4 hours, and everything was running OK. I've been using this setup for a while but lately I've noticed that some of my gadgets in the sidebar were not loading properly. So I decided to run p95 again and I got an error in 3 hours. This is really confusing because I thought the Auto setting for Vcore would overshoot the minimum needed Vcore? Also I noticed that one core (Core 0) is always getting the error and in the guide it says it's usually because of a low Vcore. Anyone want to help me figure out what's wrong or if I need to adjust another voltage? Oh also I was using the blend test in P95, should I use another test?

More about : ocing e8500 ep45 ds3r

November 24, 2008 11:13:55 PM

Please give a full system spec and voltages.

What are your temps looking like?

Is the ram divider at 1:1 and all of the speedstep stuff turned off?

If your vcore is currently on auto you should changed it to a fixed value instead (just keeping bumping up the vcore until its stable or the temps get out of hand)

As for the prime95 you should actually be using the small fft test instead of the blend test. It stresses your cpu more and really determines if it is stable.

As for ram you should run memtest86+ to determine if it is stable
November 24, 2008 11:30:05 PM


Mobo: GA-EP45-DS3R
CPU: E8500 (C0 stepping)
HSF: Arctic 7 Pro
PSU: Corsair TX 650
RAM: Mushkin 2X2 GB EM2-6400
HDD: 500GB Seagate
GPU: 4870 512MB

Vcore: 1.325000V was 1.225000 at stock
RAM: 1.8V(Stock)

Everything else is on auto. Disabled speedstep and C1E.

My temps are maxing at around 54C in Everest under load. They used to max at around 50C at stock speed under load.

Ram divider is 1:1