If you will be using a dedicated PCI Express video card, then you do not need the Intel Core i7-3570K. So the Intel Core i7-3570 should be OK.
And what do you think about Z77 Extreme4 and Pro4 MB?
There is a difference of 27.00 €.
Currently I cannot comment on third party products, but I would suggest contacting any of the Authorized Intel® Distributors and they will be able to provide you recommendations as well as pricing and availability information.
You can find a list of Authorized Intel(R) Distributors at:
I'll buy the i5 3570.
What do you think is the best choise of RAM:
2x8Gb DDR3 1600 CL9 (Corsair)
2x8Gb DDR3 1866 CL10 (G.Skill)
They have the same price (the difference is only 0.25 Euro)
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Since this memory 2x8Gb DDR3 1866 CL10 (G.Skill) is not supported by the Intel Core i7-3570 processor, I would suggest the 2x8Gb DDR3 1600 CL9 (Corsair), this is because the processor memory controller hub supports up to 1600 MHz, make sure to use memory running at 1.5 volts.
Now I have my config