Looking to replace my wife's ancient PC (As in a AMD XP 2400+, 1.5GB ram, 50GB hd) with something a bit more modern, we like to play some online/lan games together but it wouldn't be used for anything too heavy duty game-wise, that said being able to play Diablo 3 (On mid-range settings) would be nice, Source games like Portal 2 and possibly the odd MMO is crucial. Budget is around £600 and I'm pretty realistic so don't expect to be able to play Crysis 2 maxed out or anything but would like the squeeze the most performance out of the price point.
We don't watch any Blurays so a normal DVD writer is fine, 5 in 1 card reader is worth the £5 as can never find our bloody USB reader when we need it, a new keyboard and mouse would be helpful as hers is pretty old but normal wired is fine.
For comparison, I'm using a E6750 Core duo, 4GB Ram with a Radeon 4850HD and 500GB hd and while getting a bit long in the tooth, can play Skyrim on medium settings with decent framerates etc so not looking for 60fps on the latest FPS at maxed settings or anything, just a mid-range computer that can play modern(ish) games on medium settings. I know that Intel rule the roost again as far as performance goes, but if we're talking only a 5%-10% performance difference for the sake of £50 then I'd rather go with AMD.
The £600 price point is pretty much a must unless we're talking real performance gains for only a small difference. Already have decent speakers and monitor. Edit: If there is any wiggle room at all, a quieter cpu fan is always nice).