I would expect the Core i5-3570K and the Core i7-2600K to provide similar performance in most of my applications. They're both quad-core processors with 3.4 GHz base clock and 3.8 GHz "turbo" clock. The i7 has hyperthreading that the i5 lacks.integer wrote: Upgrading from the i7-2600k or is this an entirely new build?
I'm upgrading the Llano (with integrated Radeon HD6550D IGP) in my living room PC to Ivy Bridge + Radeon HD7770. The F1A75-M Pro + A8-3850 (2.9 GHz quad-core) + 4x4 GiB PC3-12800 will be a mother's day gift. They'll replace Mom's MSI-7125 K8N Neo4 Platinum (NForce4 Ultra chipset) + Opteron 175 (2.2 GHz dual-core) + 4x1 GiB PC3200 (DDR400) socket-939 system that apparently just succumbed to the Chinese capacitor blight last week. She'll continue to use an existing Radeon HD4870-1GB to drive an UltraSharp 2000FP.
I had hoped to postpone this upgrade until AMD's Trinity arrived to replace my Llano system, but I found out Thursday afternoon that the old socket-939 motherboard had quit working, so I placed orders with Newegg and Amazon when I got home that evening.
On-topic: I do not plan to disassemble the Core i5-3570K's heat spreader. I may overclock it just for giggles when I first get it up and running, but most of the time it will be very lightly loaded working as a DVR with only occasional big-screen gaming at 1080p. I may start out with the stock heatsink just until I can figure out which aftermarket cooler will best fit into the Antec NSK2480 case that arrived from Amazon today.