If this is in the wrong forum, blame the welcome wagon. In the red corner: Features for this HEWLETT PACKARD M7635.UK - Intel Core 2 Duo Processor E6400 - 2 x 2.13GHz, 1GHz FSB, 2MB Cache - Microsoft Windows XP Media Center - 2GB DDR RAM - 400GB Hard Disk Drive - Dual Layer DVD ReWriter Drive - 512MB ATI Radeon X1600SE Graphics - Built-in TV Tuner + Remote Control - 802.11g Wireless Network Ready - 15-in-1 Media Card Reader And in the blue corner: Features for this HEWLETT PACKARD 7755 # Intel Core 2 Duo Processor E6600 # 2.40GHz, 1066MHz FSB, 4MB Cache # Genuine Windows Vista (R) Home Premium # 2GB DDR RAM # 400GB Hard Drive # DVD Rewriter Drive # 256MB nVidia GeForce 7500LE Graphics # Built-in TV Tuner + Remote Control # Wireless Keyboard + Mouse # 15-in-1 Media Card Reader What sells me on the first one is that it's XP. I'm very comfortable with XP, it's served me well, and I'm not too keen on switching to Vista, not least because of any potential compatibility issues with the games and software I have. The second one, however, does have the lure of a slightly faster machine and nVidia, which I feel comfortable with because it's a familiar name and I know I'm getting something good with it. Something that has me curious is the 2 x 2.13GHz, 1GHz FSB, 2MB Cache with the first PC and the 2.40GHz, 1066MHz FSB, 4MB Cache with the second one. Is there something significant with one having 2 processors over the singular processor of the other? I likely won't be playing any high-end or intensive games, but I'd still like know that the computer I'm getting can still play them well if the need arises. If I was forced to choose right now, I would go for the former one because I'd rather go with XP even though the graphics card is from a company I'm not that familiar with and I tend to veer towards the bigger name because I feel more confident in their product. All things being equal, what would you choose and why? Reassure me the former is the one for me, or convince me that I should take the Vista plunge and go for the latter. I'm on the fence right now, and would appreciate feedback that would guide me either way.