I bought it retail. I don't know exactly what's wrong. One thing for sure is that it's dead. My monitor has gone blank all of sudden so I checked cables. I rma my video card, eVGA 7800GTX, motherboard, Asus A8N-SLI deluxe. I realized that my power supply overheated so I've got new one. So I got replacement for motherboard, and video card but I still don't see any difference. It's not my monitor either because I've connected it to my laptop and it worked fine. I have replaced everything except this for god saken CPU!