Thanks for the tip re the K in the chip names and the advice on the i5.

Here in NZ, the price difference is: NZ$166.97 so yes, something to weigh up. I probably end up running a few virtual machines for development purposes as well, so maybe the hyperthreading would help there. Looks like I've got a bit of reading to do!

Intel Core i7-3770K 3.5 GHz, Socket 1155, Retail pack with fan, Ivy Bridge

http://www.ascent.co.nz/productspeci...?ItemID=404680

Intel Core i5-3570K 3.4 GHz, Socket 1155, Retail pack with fan, Ivy Bridge

http://www.ascent.co.nz/productspeci...?ItemID=404678