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Question about Cross Firing cards close together

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Mr. Bananagrabber
Political User
#1
Hey everyone,
So I want to crossfire my 5770 card on my MSI 890GXM-G65 motherboard. Its of course a micro board and the 5770s like most cards these days take up double spots and are generally big. I was wondering if people have crossfired big cards like these on micro boards or how much space is between their cards when they are crossfired on a regular board. It's looking like the two cards will have like a mm of space between them when both on the board will this be an issue for cooling?
I have a 620w psu right now (im gonna toss that) and probably grab a 850W psu so I have some left over to add a 5th HDD as well. My Processor is liquid cooled so there shouldn't be that much extra heat in the case. As for other fans, I have an induct fan on the side panel which comes basically directly over the GPU, 2 fans pulling in on the front, 2 exhaust fans (push/pull) on the liquid cooling and a large exhaust fan on the top.
Any suggestions/concerns?
Thanks!
 

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Mr. Bananagrabber
Political User
#3
just plug them in side by side and make sure to have plenty of air flow.
Side by side? You mean one on top of the other right :D
So you dont think the lack of distance between the two cards will be too small? here is a blurry picture of the 1 card in the spot the 2 spots below it will be where the card will go (I'm gonna have to ditch the wireless card that doesnt work, lol)
Also, do I have to get the same brand of card? I want to get the same card but I think I might be able to get one thats a little thinner and doesnt take up the whole damn double slot.
 

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Mr. Bananagrabber
Political User
#5
If it was a problem you'd never have quad sli/crossfire machines :D
Haha, I guess.
I was just worried that since it was a micro with the slots closer together it might present a cooling issue. Saw someone with the exact same setup however online and said the top card ran at 62C under load which isn't bad.
I have thus bought the card (since its on sale for 100 bucks right now) and a 950w PSU, also on sale. :)
 
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Vanquished

Mr. Bananagrabber
Political User
#6
Hey peeps,
Well I got my card and my new PSU and installed them both. Not Crossfiring is not working. I have it set up with 2 monitors plugged into 1 card and am using 1 bridge.
When I go into CCC nothing is there and AMD Overdrive doesn't recognize the second card either.
When I first had the card in both CCC and AMD Overdrive recognized the card but no options were available and Overdrive didn't have any information on the card.
Any help?
I find it amazing that no instructions are sent with these cards...
My board is an MSI 890GXM-G65
Thanks!

This is my card by the way:
http://www.newegg.com/Product/Product.aspx?Item=N82E16814102873

Do I use 1 bridge like I'm using or 2 bridges?

Also apparently when I try and install a new version of CCC I get a blue screen saying "IRQL_NOT_LESS_OR_EQUAL"

Yea another thing. When I log into windows (or I guess turn the PC on) I get an error messare saying Smalltalk/v "Virtual machine stack overflow" What is this?!?!?
 
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Vanquished

Mr. Bananagrabber
Political User
#7
Hey guys,
I think I got crossfire working. I guess the second card only turns on when its needed?
What I am now wondering is if there is a way to switch the primary card?

My top card which is primary is very close to the bottom card because I'm using a Micro board (its got like half a centimeter between it and the bottom card) so it runs hot i think, its idling about 45C and under load of homefront on full I think it hit a not-too-bad 75C I was wondering though if there was a way to make the bottom card run as the primary since its not got obstructed airflow. Here is a screenshot of the situation.

Thanks!
 

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Mr. Bananagrabber
Political User
#9
worry about video card temps when they hit >150C :)

Otherwise play and be happy.
Cool :D
Thanks!

EDIT: So i think I got the last 5770 from Sapphire that newegg had because after I bought it it said out of stock, now it says deactivated. lol
 
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Vanquished

Mr. Bananagrabber
Political User
#10
Hey People!
So, not too long after I posted this I switched motherboards to the Gigabyte 990FXA-UD3 with a full card width in between both cards. The temps fell but not really a worthwhile amount. Ergo, Lord's advice was spot on. I wouldn't worry about car temps on close together GPUs.
Thanks!
 

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