Just simple............very HOT.........and max speed (GHz) is lower then Ivy. Haswell is considerable upgrading for those who don't have a Sandy or better.
Open air case, Corsair H100, 1.2v @ 4.6GHz and this things hitting 91c :
Haswell has strong IMC than Ivy. I have seen a lot of leaked results people managed to push it to to 3000+ Haswell overclocking style is different from Ivy. More options, more playability. Again people, do not compare Haswell @ 4.6 vs Ivy @ 4.6 since Haswell has 10% improved IPC over Ivy. It's like performance of Haswell @ 4.6 = Ivy @ 5.0 Can your Ivy chip do 5.0 under water? And H110 is better than H100. Think about it again.
My 4770K is a bad chip. 4.9 is not bootable into windows. Stuck at logon screen. Max is 4.8 only.
bro 4.8ghz @ what temperature?
and also the IMC
really want to check 1st before upgrading to haswell.