I'm going to be upgrading my pc. I'm getting a new power supply, motherboard and CPU. I'm thinking of getting the i5 3570k. To go with it I was looking at a few motherboards:
Gigabyte SKT-1155 Z77-D3H
http://www.gigabyte.com/products/product-page.aspx?pid=4140#ov
Gigabyte SKT-1155 Z68XP-UD3P
http://www.gigabyte.com/products/product-page.aspx?pid=3912#ov
AsRock Z77 Extreme4
http://www.asrock.com/mb/overview.asp?Model=Z77%20Extreme4&cat=Specifications
They are all pcie gen 3. However the graphics card that I have is the hd 6850 which was not made for pcie 3. Will this pose any problems? I am thinking about getting another one and running it in crossfire. The ud3p and the extreme4 when in crossfire mode run at speeds of 8x 8x but since this is gen 3 will it infact be equivalent to 16x 16x in gen 2? Will this still apply with my gen 2 graphics card? The d3H motherboard runs in 16x and 4x speeds when on crossfire. Would this be fast enough considering that it is also gen 3?
Finally which motherboard would you recommend out of these three. As I have said I am considering using crossfire. Any other recommendations of other motherboards are welcome.
Gigabyte SKT-1155 Z77-D3H
http://www.gigabyte.com/products/product-page.aspx?pid=4140#ov
Gigabyte SKT-1155 Z68XP-UD3P
http://www.gigabyte.com/products/product-page.aspx?pid=3912#ov
AsRock Z77 Extreme4
http://www.asrock.com/mb/overview.asp?Model=Z77%20Extreme4&cat=Specifications
They are all pcie gen 3. However the graphics card that I have is the hd 6850 which was not made for pcie 3. Will this pose any problems? I am thinking about getting another one and running it in crossfire. The ud3p and the extreme4 when in crossfire mode run at speeds of 8x 8x but since this is gen 3 will it infact be equivalent to 16x 16x in gen 2? Will this still apply with my gen 2 graphics card? The d3H motherboard runs in 16x and 4x speeds when on crossfire. Would this be fast enough considering that it is also gen 3?
Finally which motherboard would you recommend out of these three. As I have said I am considering using crossfire. Any other recommendations of other motherboards are welcome.