Yea I still keep waiting to upgrade my 2600k, but at this point I think all the other parts will physically break before I need to. It's like 10-20% slower than a chip 5 years newer, big woop.
Same here. It's hard to want to upgrade a 2500k stable at 4.6ghz on air with no overvolting. Got it right when it came out. OTOH, starting with a Radeon 6870 then later adding a second for crossfire and Bitcoin mining when that was profitable still barely give me the power to play the newest Rainbow 6 on low everything @1920x1200 while keeping >30FPS min on Win10. I'm personally waiting for the new GPUs to come later this year before upgrading, then seeing if Oculus or Vive has better game support at that time.
The 2600k cost about $350 new in 2011. For the same amount of money you could get a 5820K which is about 1.5x faster than the 2600k (or to put it in your terms, the 2600k is 52% slower). Still probably not worth it, but I looked up the numbers and might as well post them.
