Hey, I consider myself moderately tech savvy, but I don't know all that much about processors so excuse me if this is a noobish question. I got an XPS 410 just about 2 years ago right before going to college. Also, since I'm new, it isnt letting me post links, and when I just post the URLs and say remove link, it's still blocking me from posting it, so sorry no direct links. I'll try to suffice It has an Intel Core 2 Q6600 CPU Nvidia 8600 GTS 256MB 4 GBs of DDR Ram So I'm wanting to upgrade the CPU and Video Card. CPU: Intel Core 2 Quad Q9550 Yorkfield 2.83GHz (sorry no links allowed for Newbs like me ) Video Card: EVGA GeForce GTX 275 FTW Edition 896MB (Not really relevant to the problem. I'm just providing it so you guys don't think I'm just upgrading the CPU and leaving the crappy vid card. I know it'll work... and also for the super observant among you, I know I have to buy a new PSU because of the 410's stock 375 watt PSU ) It also might be worth noting that since buying it, I've downgraded from Vista that came with it to XP Pro (both 32 bit) So I was looking around and saw that the socket is the right one, but that sometimes the chipsets aren't compatible. Here are the details I could find on my MotherBoard Manufacturer: Dell Model: 0CT017 Chipset:Intel(R) G965 Express Chipset (Though on CPU-Z it also says P965, not sure if that matters) Socket: LGA 775 Documentation(again, sorry, not allowed to link, so exuse the ghettoness): Google "XPS 410 Documentation" >English>Service Manual>Specifications Google "Intel desktop chipsets comparison chart" >Scroll to P965 or G965 (they're the same as far as I can tell) So at first glance, it would look like the Processor I want wouldn't work, but according to the documentation, the one I have right now wouldn't work either So I assume the documentation is just outdated. I saw somebody (I believe on this forum) in a post from about a year ago who was actually trying to upgrade to the processor I have right now. Apparently Dell just updated the BIOS so it would work with them. So now, contrary to the documentation, the chipset supports Quad Core Processing, but would it support the newer quad core processors? Hope that's enough background on the situation. Sorry if this post is a little rambling. I've been trying to figure this out for hours and my brain's a little fried .