Hello Im planning to upgrade to a 3570k so im looking for a new Z77 motherboard. The board needs to have crossfire couse i will add a 7870 later. Are there any affordable 3.0 PCIe 2x x16 boards? I cannot seem to find a site that have a proper search function. And everytime i think i found a board its 1x16+1x4. I never build a cf or sli system so its a bit confusing for me. And with all the misleading specifications it doesnt make things easier. And also would it be ok to use my old 1333mhz memory on the new system? Ive read that the difference between 1333 and 1600 is very small. Thanks in advance Oh yea forgot the mention my budget. Im thinking about spending 100-120 euro/110-130 dollar for the board.