I've currently got a rubbish I5 2500k can only reach 4400MHz at 1.340 vcore. As my PC is for general home use, internet and gaming, would I see any real benefit if I upgraded to an i7 2700k? If it helps my gpu is a 1024Mb 560GTX (not the ti version)
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You would also need a new board and ram wouldn't you to switch to an i7?
Not worth it at all. You're almost certainly completely limited by GPU performance, not CPU.
This TBH, get a new GPU first. A 2500K at 4.4Ghz is more than fast enough for 99% of games.

Invest elsewhere.I've currently got a rubbish I5 2500k can only reach 4400MHz at 1.340 vcore. As my PC is for general home use, internet and gaming, would I see any real benefit if I upgraded to an i7 2700k? If it helps my gpu is a 1024Mb 560GTX (not the ti version)
Nope, it's the same line of chips. Same socket, same ram etc.
I thought the i7 preffered tripple channel ram and the i5 dual? If the OP is complaining about the i5 performance, surely a tripple setup would be on the cards for him? Although, I agree, from what I hear dual is perfectly acceptable for bandwidth, it's just not optimum.
I thought the i7 preffered tripple channel ram and the i5 dual? If the OP is complaining about the i5 performance, surely a tripple setup would be on the cards for him? Although, I agree, from what I hear dual is perfectly acceptable for bandwidth, it's just not optimum.
is it a D1 revision or D2 revision ?
I found the latter overclocks a lot better with less V's.
As others have said, no point upgrading the cpu anytime soon.
Are you struggling to run a certain game with your 560?
No the games I have are running fine, it's just that I keep reading of folks getting 4.5 - 4.8 MHz out of their 2500k's.