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GTX580 close SLI cooling performance

post #1 of 19
Thread Starter 
I am going to buy the P67 UD7 mother board soon and put on it 2 GTX580's but there is one thing that bugs me the only 2 PCI-E X16 are really close so so how much would that decrease my cooling performance on the upper card ???

should I try and get a motherboard that allow me to put my cards with more distance between them ???

it look likt this:
PCI-E X1
PCI-E X16
PCI-E X8
PCI-E X16
PCI
PCI-E X8
PCI

P67 UD7 pic:
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post #2 of 19
You just put them in the x16 slots and your golden



forgot about the little x1 slot.


You could stick one in an x8, it wont make a difference that is noticeable.

Another thing is try it right next to each other and see if it works out for you
Edited by The Master Chief - 1/9/11 at 7:39am
post #3 of 19
Thread Starter 
my problem is about the cooling the fan of the upper card is so close to the second card PCB how would that effect the first card temps ?

if I use the X8 pci-e on the bottom will it run at X8 or X16 on SLI (I mean the PCI-E on the top adn the PCI-E on the bottom)...
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post #4 of 19
Quote:
Originally Posted by ranerX3 View Post
my problem is about the cooling the fan of the upper card is so close to the second card PCB how would that effect the first card temps ?

if I use the X8 pci-e on the bottom will it run at X8 or X16 on SLI (I mean the PCI-E on the top adn the PCI-E on the bottom)...
Who cares? x8 gives you 98% of x16's performance:
http://www.techpowerup.com/reviews/N...caling/24.html
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post #5 of 19
The big fan on the side of the case should help you quite a bit. Use a fan controller and speed it up when cards are under load.
post #6 of 19
Thread Starter 
Quote:
Originally Posted by B!0HaZard View Post
Who cares? x8 gives you 98% of x16's performance:
http://www.techpowerup.com/reviews/N...caling/24.html
are you sure ?

it say the X4 lose 7%

from what I knoy you lose 5-10% from using a X8 and around 20% from X4


anyway around how much tmp difference will I get more on the top card then having space between them ?
Edited by ranerX3 - 1/9/11 at 7:48am
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post #7 of 19
Quote:
Originally Posted by ranerX3 View Post
my problem is about the cooling the fan of the upper card is so close to the second card PCB how would that effect the first card temps ?

if I use the X8 pci-e on the bottom will it run at X8 or X16 on SLI (I mean the PCI-E on the top adn the PCI-E on the bottom)...

That will only make a difference in like 1 fps or in benchmarks, but those are a waste of time really.
post #8 of 19
Thread Starter 
Quote:
Originally Posted by ydna666 View Post
The big fan on the side of the case should help you quite a bit. Use a fan controller and speed it up when cards are under load.
ya the fan at the side and also the fan I can mount at the right side of the cards (120 or 140 I am not sure :\\) (the mounting fan that come with the HAF-X...)
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post #9 of 19
They run cooler than you think, but sandwiching them closely together will still 'bake' the upper card. There is no reason not to use the x8 lanes, especially since it will allow better airflow between the cards.
post #10 of 19
Wait for EVGAs solution and might have better PCIE Speeds with NF200. Also i would put them in first PCIE and last PCIE.
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