I was looking at newegg.com for a 6800gt (256mb ,non-pci express) and noticed that some of the 6800 gt's are sold out while others are still in stock. Is there any particular reason why some brands like the ELSA, XFX, GIGABYTE, BFG, PNY, and GAINWARD are out of stock but other brands like the CHAINTECH, MSI, AOPEN, ALBATRON, EVGA, and LEADTEK are in stock. I'm going to overclock the 6800gt so the cooling solution is important. Any tips?