Prime95 Question

Firegod · 8 Sep 2006 at 21:03

I've noticed that a few games have been hanging recently, the latest are the Warhammer Demo and CoH Demo.

I decided to run Prime95 anyway to see if anything failed and I ran the small FFT Test for an hour and had no problems. CPU temp was around 50.

I then went and did the in place large FFT test and it failed after about 10 minutes. Am I right in saying that it'll be the RAM causing the error? As nothing occured when running just the CPU test.

Look forward to a quick reply, I don't know much about Prime95!

Thanks!

Firegod · 8 Sep 2006 at 22:07

Thanks for the help, and the link Raze!!

Just ran MemTest for an hour (did just over 2 passes) and no errors. :confused:

I'm thinking either voltage is an issue or the CPU memory controller. Thanks Jules, I'll try upping the RAM and perhaps bump the CPU up a tiny bit more. DDR is good for anything between 2.6 - 3.0v but G.Skill uses ic's that like low volts. But I'll see what happens.

At the minute the Data Strength and Skew, etc are set to Auto. May try fiddling with them.

Watch this space!

Firegod · 8 Sep 2006 at 23:05

Looks like it was a few things...

I've increased the CPU voltage from 1.582v -> 1.610v and that has worked well. But also slapped a 5:6 divider on the system which does the following:-

CPU - 275x10 - 2.75Ghz

MEM - 229 @8-4-4-3.0

So a few things I can do over the weekend. See if the increased voltage can allow for a few more Mhz on the CPU. (At load atm it is 52 degrees)

And also, probably more importantly, try and tighten up the timings as the RAM is running ~20Mhz slower from stock.

Thanks for the help!

Firegod · 9 Sep 2006 at 15:49

Cheers peeps.

All is well since the voltage bump so I think it's the mem controller on the CPU causing the problem. I played the CoH demo again today and it never crashed once.

Jules, I have been running this overclock speed for a good 2+ years, but I'm guessing the problem has only occured now as I upgrade recently to 2Gb of RAM. Previously I have not experienced any issues. So the CPU is still giving as good as it gets, and I'm hoping she'll be running like this for another year. But I defo won't be going higher on the VCore as I think the air cooling has reached it's limit at just over 50 degrees on load. Oh, and it's only a single core CPU mate.

Nami, if the problem re-occurs I think that's a sound plan to start again. Basically I have put in the 2Gb of RAM and just tweaked the old settings to get it working, I did not start from scratch to find the best configuration. So possibly may do that if things start to go wrong.

Thanks for the replies again!