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ASUS Maximus IV Extreme Running Crossfire on PCI-E Slot 1 & 2 do you see a problem?

post #1 of 3
Thread Starter 
Hello,

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!
post #2 of 3
Quote:
Originally Posted by 33B View Post

Hello,
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).

asus maximus iv extreme.JPG

 

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.

 

post #3 of 3
Thread Starter 
Well i dont really care for benchmarks just dont want the computer BSODing on me as one will be running through NF200 and one native.

If running 8x/16x wont cause this then i will keep it like that!

Thanks for your help
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