Originally Posted by 33B
I am currently looking to upgrade to crossfire and watercool it.. then maybe in the future upgrade to tri-fire. I know the motherboard manual says you should use #1 and #3 when running SLI/crossfire cards but is there any reason i cannot run in #1 and # 2 untill i get a 3rd and then use #1 #2 and #4?
I understand that #1 and #3 are 8x 8x native and #2 and #4 are NF200 and NF200 has a small delay which will gimp overall performance but in my eyes its not enough to worry about.
So what do you guys think? run #1 #3 (8x 8x Native) Or #1 #2 (8x/16x NF200) then when i add my 3rd gfx's card it shouldn't be a pain to upgrade..
Thanks for any help!
As you already know, there are four PCIE slots for the graphics cards and the Asus' recommendation is on page 2-15 of the user manual (see excerpt below).
For dual graphics cards, there are only 2 reasons to use slots 1+3 rather than using slots 1+2.
1st: slots 1+3 offer better ventilation. As your cards are going to be watercooled, this is not relevant to you.
2nd: slots 1+3 offer x8(native) / x8(native). According to Asus, this gives better SLI performance over x8(native) / x16(via NF200).
I suppose, if you are a benchmarker, it will yield a slightly higher score which is of great importance. However, if you are a gamer, that slight gain only translates to a couple frames per second and is practically insignificant.