OCZ DDR2 PC6400 Vista Performance Gold 2 GB

OCZ Vista Upgrade 2GB (2 x 1GB) 240-Pin DDR2 SDRAM DDR2 800 (PC2 6400) Dual Channel Kit Desktop Memory Model OCZ2VU8002GK - Retail - 10 / 10

Pros: Works with ALL operating systems! Cons: Most motherboards default to 1.8V for Vdimm. These are spec'd at 2.1V, so you have to manually change this in BIOS. Other Thoughts: To the reviewer...

OCZ Vista Upgrade 2GB (2 x 1GB) 240-Pin DDR2 SDRAM DDR2 800 (PC2 6400) Dual Channel Kit Desktop Memory Model OCZ2VU8002GK - Retail - 10 / 10

Pros: Nice for the price Cons: No S/N on the DIMMs, so it is easy to get your pairs mixed up. If you buy a tested pair like this, mark them yourself as soon as you open the package. Other Thoughts:...