For me the decision was easy to upgrade: I had a q6600 that pushing three years old and thats about my build cycle period. I was going for a i7 950 and asus sabertoothX58(awsome board, it was the one thing that really made it hard to go sandy) back around dec 10th, when I started researching my new build, and I kept hearing about sandy bridge in my reasearch, so I started looking into that also.
Well It did not take long to realize that for the same price as a 950 I could get a 2600k or even a 2500k(for $100 less) and still have better(2600k) or equal(2500k) performance. So I figured I would go for the 2500k and save $100 that I would have spent on a 950 that was about the same.
Then I thought for just a $100 more I could get a 2600k that, performance wise, rivalled an i7 980X and topped everything else in terms of stock performance and overcloking ability. So I decided to get the best for once and build myself a wicked system. The choice wasn’t that hard for me since I had allocated about $300 for my cpu. I would say if you can spare the $100 go for the 2600k over the 2500k and you will never regret it. Edited by techheadtrevor - 1/30/11 at 6:41pm