Super Pi Error

[synbios]

I've had a couple of erors when running Super Pi.

My parts are as follows and were run stock

3700+ (2200mhz)
2x 1gb Crucial value ram (DDR400)
X1900 CF edition
Asrock 939dualsataII


The errors I encountered are:

1) Not exact in round.
2) Non convergent in SQR05

I've read these occur when the system is unstable when overclocked, but as mentioned earlier I've not overclocked.
Also for some reason when I set ram settings to auto it defaults to DDR333 and 2T, Im guessing this is normal to run at a slower speed for stability and I need to manually set these to 1T and DDR400?

Also, I changed from 4 sticks of 512mb to the 2 sticks of 1gb.

 

[unclewebb]

You should start by testing your memory with a program like MemTest86+ which bypasses Windows.

Memory problems are very common when you switch memory modules. You might have to adjust some of the sub timings, if possible, to get it stable. If all of your memory timings are set on AUTO then it might be setting your memory to timings that it doesn't like to run at on your board.

For DDR400 Crucial has AUTO timings of CL2-2-2 usually but your computer might need CL 2.5-2-2 or even 2.5-3-3 for 100% stability. Run CPUz and it will tell you what settings your memory is presently running at. My Crucial memory wasn't very happy at a command rate of 1T so you might have to leave that at 2T as well.