I recently decided that I was tired of my sluggish computer and bought some new ram. I didn't notice at the time but the timing and voltage was different than my installed ram. Here is what I'm working with:
The new ram I purchased is: CORSAIR XMS2 2GB (2 x 1GB) 240-Pin DDR2 SDRAM DDR2 800 (PC2 6400) CL5 1.8V
Everything is the same, heat sink and everything, except the CL. I tried all the combinations of old/new ram and it doesn't seem like anything works. The computer will power on but no beeps and no video. No ram will yield beeps and old ram will run just fine. The new ram will not boot or beep.
It seems that my original ram is not sold anywhere anymore, so I was wondering if the new ram is indeed defective, is there any other ram I could get? I'd prefer to only get 2 more sticks of 1gb because of money issues.
Run the new ram by itself and use memtest, a free download. If it runs without errors, sell your old ram on craigslist and buy another pair of the new stuff. If the new ram has too many errors, rma it to corsair and do what I recommended when you get the replacement ram.