Pros: Sweet card, as benchmarks anywhere will clearly show.

Cons: thing is gigantic. Added it to ASUS M2N78-LA in stock HP m8530f case - shockingly, it fits almost perfectly, except that it blocks #3,4 #5,6 SATA ports on MB. For now just unplugged them, but make sure you have slim SATA connectors or 90 degree bends if your using this MB. To check your MB, basically just look from the pci x16 straight back to the front of the MB. All that will be blocked.

Pros: Marked improvement in RAM performance (vista x64, motherboard ASUS M2N78-LA). Superficially the RAM looks great - suitable for display cases. Inexpensive.

Cons: Ordered 3x 2GB sticks (1 2x2GB and 1 1x2GB). Started getting BSODs at random times (within 10 minutes) of starting PC. Noted BIOS reconfigured to PC-5300 (supposed to be PC-6400). Did typical 1 stick at a time testing. Narrowed it down to the 1x2GB stick, which is apparently bad. Caused such instability in the system that Windows lost my User Profile information - basically trashed my user account, so I had to create another account and start over. Probably my own fault for not setting a restore point before upgrade - but still annoying. Memory was very hot after only a few minutes of operation.

Overall Review: I have faith - I've ordered a replacement rather than a refund - so we'll see how it goes with the new stick. If the new one is bad, I'll be returning all 3 sticks for a refund and switching to a new manufacturer. RMA through newegg was easy (as everyone knows). Don't let this stop you from buying GSKILL - stated before I am happy with the working sticks. It looks like they have a 2-3% fault rate (based on reviews), which is probably not bad considering how inexpensive it is.