First of all I've used OCZ branded memory previously and felt they were good. This is why I bought this product. But nowadays, it seems like memory compatibility and/or quality issues are the main problems why custom/diy builds don't work initially. I built a i7 920 D0 system with an ASUS P6T Deluxe V2 board. I did alot of research on memory because my last system build took a long time due to finding compatible memory. OCZ Platinum modules looked appealing because they're cheaper than the popular Corsair Dominators and have faster timings. When I recieved them, I plugged them in and things went downhill. Problems occurred immediately during Win7 64 bit Pro install. It choked 5 mins into installation citing h/w issues. Ran it's memory diagonostic tool and it showed failures. Double checked by running MemTest86+ and also saw failures. Ran speed at 1600MHz (where it's supposed to be rated at), 1333, 1066 as well as 7-7-7, 8-8-8, and 9-9-9 timings with voltage changes to spec. After two weeks of experimenting, these memories never worked. I spent a little time trying to figure out if it was a bad stick but it looked like all were bad. Asus has a QVL approved memory list for my mobo and this memory wasn't on it. Sent these back to Amazon for refund. Great service. I ended up buying lower level Corsair memory which worked out of the packaging. Got Win7 to install, at least. However these didn't run reliably at 1600 but ran great at 1333. I wasn't satisfied and finally caved in and bought Corsair Dominators from Amazon. My system has been running great since. Moral of the story for me is to buy the best memory, period. Don't skimp and save yourself 6 weeks of pain to get a new system build up and running.