Core i5-750 vs Phenom II X4

Rather simple, I've got 2 plans of attack for a new computer. My 7.5 year old Pentium 4 just can't take it much anymore and upgrading the AGP-based GPU is really stupid.

So my two paths are the core i5-750 and the P2X4 (probably the 955). CoX is really the only current game I play anymore, though there are a couple I might be interested in. Nothing major and no big deal if I don't. This new rig will mostly be for our beloved game and internetting because the little lady at home likes to hijack my rig (even though her notebook is RIGHT THERE!) and also some Office Suite stuff and training material programs for work.

So let the ideas, preferences and experiences roll in about each one. I'm not going to bother listing all the other hardware parts for it. I've made up my mind on them. I just want to hear about users' hands-on xp points with these 2 chips.

I don't own one but I have seen the i5 in action in a friends rig. It has some kind of turbo boost thing that Intel engineered into the CPU so if it's only using one core it speeds that core up to get more performance. Works a treat by the look of it.

Honestly even though Intel holds the performance crown, either of those CPUs is a monster and will handle whatever needs handling on your end I would purchase either one with confidence, maybe look for a nice sale on the CPU and motherboard you want?