Pros: Very nice ram, very OC-able. I was able to get all 4 1 gig stix to run on my ASUS STRIKER EXTREME. I flashed the MB with the latest bios from ASUS then installed Vista X64 ultimate with only 2 gig of ram then went to the Microsoft site and installed a patch for vista X64 and after intalling VISTA 64 followed by the VistaX64 patch I put the other 2 gig in and it worked fine ... fist I had and error asked to boot into safe mode ... did so did nothing while there and just rebooted again like normal and All was fine with all 4 gig registered. here is the link for the Vista MEM patch http://support.microsoft.com/kb/929777 ... good luck

Cons: I got the OEM ... did not notice that the retail version were on sale for half the price at the time of my order ... other than that NONE!

Overall Review: I am running an intel Q6600 quad 2.4 (not OCed), Asus striker extreme, 4 gigs of RAM,NVIDIA GEForce 7600GS, 2 WD 150Gig Raptors, plus 1 WD SATA 500 gig internal and a WD 250 gig external back up ( WD notebook) 32 in" Philips Monitor a must for PHOTOSHOP users IMO ...