Motherboard advice and recommendations

Gawin

Honorable
Jun 30, 2012
21
0
10,510
Hi. I am planning to build my first gaming PC with a budget of £600-£800 (I believe that's around $1000-$1200). I am thinking of getting the Intel i5-2500k CPU and Radeon HD 7850 (is this a good setup?). I haven't decided on anything else yet.

I am looking for an LGA1155 motherboard that allows me to overclock, and supports crossfire should I feel the need to upgrade in the future. So my main questions are:

Which chipset is the most suitable? Z68 or Z77?
Since Radeon HD 7850 utilises PCIe 3.0x16, is it important that that the motherboard has a PCI 3.0 port or will PCI 2.0 suffice?
If the motherboard already has integrated graphics, can I still add a discrete one?

If anyone can give me a recommendation that would be great as well. So far I have set my eyes on this but am not sure if it's a good choice:

http://www.novatech.co.uk/products/components/motherboards/intel1155z77chipsetmotherboards/ga-z77-d3h.html

Thanks in advance.