But think about it; even if the 280M were more reliable (which it likely is), it doesn't add up financially until your GPU dies twice. The 8800M GTS only costs ~$350-$400. 280M GTX is $800+. Overclocking a GPU is fine provided that you do it properly. I've run my HDX's O/C for years now. No issues. The temp increase is about 4-5Deg C which is nothing in the grand scene. And since the ability to O/C the 280M GTX is limited, there's not much advantage to it other than the increased memory to 1GB from 512MB. Sure, I keep my fans clean quarterly. But even twice a year should be good enough if you have no pets (cats especially) and keep the desk it sits on reasonably dusted. As for the quad core project, it's novel (and only for the most technically inclined to even attempt) but if it can't be overclocked there not much advantage over the X9000 or X9100. It's more of a "proof of concept" project. Once one gets an X9000, O/C the GPU and gets an SSD, the HDX is maxed out. But that's a max that will last you a few more years before becoming too ancient to be of much use anymore and you'll be desperate for an upgrade.