[citation][nom]frozonic[/nom]Ivy bridge might not be a real "Upgrade" from sandy bridge, but it is at least 5-8% faster than current SB cpus and it a smaller litography, less power cosumption, integrated PCI E 3.0 and maybe more overclocking room, and for the same price as older SB it is a nice "update", altough i wasnt worth the wait IB is good for someone looking to build a pc from now on. anyways, its newer technology[/citation]
Actually no. Sandy Bridge is better at overclocking then Ivy Bridge is, just read Tom's review on the 3770k.
At least 5% to 8% better isn't worth 300 dollars for an upgrade, you're completely wasting your money upgrading to Ivy Bridge clock for clock if you already have a Sandy Bridge cpu.
As for PCI-E 3.0 no single graphics card yet aren't close to passing the bandwidth of PCI-E 2.0 limit, even the highend latest graphics cards in a corssfire setup can't aren't able to go past PCI-E 2.0's bandwidth limit. You would need something on the lines of a triple crossfire config with 3 highend graphics cards to be able to finally get over PCI-E 2.0's bandwidth limit and for 99% of pc gamers out there that doesn't have 6 grand or so to throw around on an exotic gaming pc system to have such specs then PCI-E 3.0 at this point is more marketing gimmick then anything that the actual gamer can't truly take advantage of.