I have a Core 2 Duo 3.0 GHz that works great for me and delivers all I need, handling office documents, web browsing, music, movies and gaming. The most I multitask is when I back-up my information and simultaneously browse the internet. Would a 4 core i5-670 be what I need in a new system?
My biggest issue would be about gaming. I play on a 19" LCD at 1280x1024 and my system does just fine at top or very near top settings, with a 9800GTX+ graphics card. I'm looking to buy a 21.5" widescreen LCD, and play at 1920x1080 with a Radeon HD 5850. What I'm wondering is how much of the performance would rely on the CPU, and how well would my current CPU handle it?