After many weeks of searching for reasonable price and UK location of intel 670w psu I decided to buy OCZ 1000W Pro Xstream.
If anyone is looking for 4 rails with 20A on each 12v rail(840W 70A max combined) and 1024W max peak load, where intel 670 offers only 16A on each 12v rail and it's way not enough for setup you want to expand. Thats a nice piece of tool for not more than 100 quid! Works perfect, but you will need converter cable for 4pin mobo power.
I found interesting setup buit here:
http://www.firingsquad.com/hardware/intel_quad-core_xeon_5365_v8/page2.aspthats where I got psu recommendation.