Crossfire on z68 Mobo

[finlaymurray123]

Hi all,
I am planning to build an i5 2500k, 7850, 8gb RAM, 1tb western digital, 60gb ocz agility, Coolermaster 212 EVO pc. I was wondering what motherboards would be able to run crossfire 7850's if I want to upgrade them, I was looking at some z68 mobo's but does 16/4 pci-e work? What motherboards do you suggest(preferably £60-80 ($90-125). also what kind of psu would I need to run this pc with say the i5 4.2 ghz~ and 2x7850's would 550w do or is 650w necessary?

Thanks in advance,
fin

 

[bigcyco1]

PCPartPicker part list / Price breakdown by merchant / Benchmarks

Motherboard: ASRock Z68 Extreme3 Gen3 ATX LGA1155 Motherboard (£106.02 @ Amazon UK)
Power Supply: Corsair 650W ATX12V / EPS12V Power Supply (£69.63 @ Ebuyer)
Total: £175.65
(Prices include shipping and discounts when available.)

 

[finlaymurray123]

much better if you get this PCPartPicker part list / Price breakdown by merchant / Benchmarks

Motherboard: Asus P8Z68-V PRO/GEN3 ATX LGA1155 Motherboard (£138.98 @ Dabs)
Power Supply: XFX 750W ATX12V / EPS12V Power Supply (£93.99 @ Amazon UK)
Total: £232.97
(Prices include shipping and discounts when available.)

Thanks! I've even found the z8z68 for only £75 @ http://www.amazon.co.uk/Asus-P8Z68-V-Gen3-Mainboard-Memory/dp/B005UDITT6/ref=sr_1_3?s=computers&ie=UTF8&qid=1340404634&sr=1-3

Is that 750w psu really necessary?

 

[bigcyco1]

Thanks! I've even found the z8z68 for only £75 @ http://www.amazon.co.uk/Asus-P8Z68-V-Gen3-Mainboard-Memory/dp/B005UDITT6/ref=sr_1_3?s=computers&ie=UTF8&qid=1340404634&sr=1-3

Is that 750w psu really necessary?

650Watt is necessary i just added 100W to give you breathing room but you could don't have to get 750Watt AMD recommends at least a 600w for crossfire of 7850

 

[bigcyco1]

PCPartPicker part list / Price breakdown by merchant / Benchmarks

This would work to Power Supply: Corsair 650W ATX12V / EPS12V Power Supply (£89.58 @ Scan.co.uk)
Total: £89.58
(Prices include shipping and discounts when available.)

 

[finlaymurray123]

Thanks, sorry for no reply -I've been away.

 

[bigcyco1]

Thanks, sorry for no reply -I've been away.

No problem.