Overclocking my new RAM

[Kr1z]

I have Crucial Ballistix 4GB (4 x 1GB)

When I only had 2GB sticks in the slots I was able to overclock them to 1066@2.3Vs with no problem, but now that I put in the other 2 GB, filling up all the slots now on my P5N-E, it doesn't even boot when I set the voltage to 2.2-.3. What is the problem here? I was thinking it is overheating and I heard the P5N-Es aren't so good for 4GB? Is this true? Should I get a fan over the RAM and get a new NB cooler or something? What voltage should I be setting the NB as well?

 

[QuixoticOne]

Start from scratch.

1.8V, ram at 400 (800MHz DDR2 rate), boot the test cd to run memtest86+ for a few
minutes until it completes its first couple tests no errors.

Reboot, raise the ram to 420, test again...

repeat....until memtest doesn't work.

Bump to 1.9V, same frequency, check memtest again to see if that works.

Repeat process until the voltage bump doesn't make you stable at least another
25MHz higher.

Personally I wouldn't run at 2.3... maybe 2.1 or 2.2 depending on what the RAM
chips are and what they're rated for. Some RAM chips get WORSE or NO BETTER
timings when overvolted.

Memtest86+ should be able to run 12+ hours no errors through multiple passes at
your final settings otherwise it's going to give you crashes in the OS.

Yes 4 DIMMs on any motherboard will always run at SOMEWHAT lower speed and
higher heat than 2 DIMMs, but the speed from the MORE memory is always worth
the slight speed lost in clocks.

BTW overclocking the memory really doesn't have a huge effect on real world
benchmarks. Don't go crazy stressing about the last little 40 MHz overclock or
whatever and fry the RAM, chances are it's less than a 2% total difference in most
any application / game benchmark. Not even 1FPS.