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5970 crossfire... too close?

S

SDNYC09

Limp Gawd
Joined
May 26, 2006
Messages
200
ok 2x 5970 crossfire

This was the only way i could get them to fit onto this mobo... the last PCIE was not enough room to fit the 5970 ( power supply )

My question is this, does the fan hole pull air in or does it just create the suck from the back of the card? The two seem pretty close and the top card is 8C higher then the bottom, as you can see im water cooled but for some reason i tried 2 blocks, swiftech and EK both caused major lock ups , EK .5mil step in the block , swiftech, not touching vmr's...

now i had to rma my ocz m84 pcie drive, it deff will not fit now i have these monsters in here, so i will have to sell and buy a reg ssd....

unless heres question 2, anyone know of a mobo i can fit everything on inside a cooler master cosmos? and still have crossfire?

heres my specs...

i975 E @ 4.3
Gigabyte UD5 - (microcenter didnt have the UD7 and i needed a mobo asap)
6 gigs Dom triple
PCIE M84 SSD
2x 5970 ( 1 asus 1 xfx)
1000 watt Corsair

On a side note i got through 3dmark vantage with no problems 35000 score - also did OCCT for 20 mins

heres some pics:

100_2020.jpg
100_2022.jpg
100_2021.jpg
 
too close for sure.. you should pull one out and send it to me. ;)
.
.
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. er.. for reals it should be fine.
 
You say the top card is 8C higher than the bottom... What temp is it running?

If its in spec but just warm I wouldn't worry too much.

Btw, damn nice pc you got there. Drool.
 
I spent 300 on blocks that's don't work, causing major issues, even tho temps read fine there had to be a hotspot or maybe disconnecting the fan maybe did something i dont know all i know is i installed and reinstalled the water blocks many time checking all impressions on the thermal pads still :( lock ups, put stock block on works fine...shoot me in the face thanks...


looks like the top asus idles at 65c up to 75-80 on load ( auto fan kicks in) some reason if i manu set the fan speed it locks 1 sec after...

Bottom XFX black is around 10 lower 55 idle 70 load

But the xfx has xm3 thermal goo, can that be why? i didn't touch the asus, i dont want to take it apart i hate rma issues...
 
I am in the same boat with my EVGA board and my 2x5850s (top 2 pcie slots are 16x bottom is 8x :( )

The bottom card stays very cool while the top card gets "hot"... hotter... still stays around 55(which is cool, these cards run so cool even in bad conditions lol) which isn't even in the dark yellow on the ATI heat meter.

PS worried about heat ... just finish that WC loop to cool the cards :p
 
Sure that can make a difference, thermal paste (and application).

Have you switched the cards around to see what the temps do then?
 
I dont believe they suck air from the batman vents. I held a tissue in front of them, and it was blowing out a small amt of air. They do suck air in the fan hole. I had another slot between my 5870s on my mobo. I guess you will just have to watch the temps and see. Top card will be hotter because it is sucking hotter air thru fan hole just above the bottom card. I have since switched to 5850s with voltage upped, and core jacked up, idles in the 30s, max upper 60s gaming. Your temps seem high to me, but they are 5970s.....
 
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The vents at the far end are mostly for show I think, if anything they'd vent air outwards since the fan is only sucking air directly upwards (in the installed orientation)

The top card is naturally going to be hotter due to blocked intake. One thing to remember is that these cards are built to run at 300W and give approx that much thermal output, but the coolers are rated to dissipate 400W since the card was basically built for overclocking. So you might be OK with that as a long term solution.

However having said that, to not overclock these cards is a massive waste of power, ideally you want them both running at least at the hardwares rated speeds (they're basically 5870 hardware so rated for 850/1200 clocks) I dont know if the heat will be an issue at that point...if you're OC'ing remember you need a voltage bump to keep them stable at high clocks.
 
Thanks for the help guys, i will look into that mobo, thanks for the post....

my only other issue is , corsair 1000 watt enough for all this?
 
I'd change the case, get a corsair 800D or something else with atleast 8 expansion slots. Could change out the board, I probably wouldn't bother with one with an nforce 200 chip, but you could go that route.

The MSI board has probably has the correct spacing for what you're looking for.

http://www.newegg.com/Product/Product.aspx?Item=N82E16813130215&cm_re=x58-_-13-130-215-_-Product

Two 5970s have a 1 slot space between them and you can fit your z-drive in the last slot at the bottom. It shouldn't block the airflow to the second 5970 as it's shorter.
 
God yeah, don't put anything between a crossfire solution, I had to put my Asus D2X Xonar soundcard between 2 4870s and that thing has a large metal plate on it to shield interference which got very hot.
 
Might want to think about a new case, even your hard drive is just sitting on the bottom looking sorry for itself.
 
thats just a spare drive im using to run windows i had to rma my PCIE SSD drive im waiting for OCZ to send one back...

I like the 800d but i have a dual rad at the top of my case which would fit, but i also have a single rad in the front of the case u cant see in the pics for a total of 2 rads....i bought this all when i had this case already so i bought what fits... i dont want to spend more on a 3 fan rad for the 800, and just leave the other 2 sitting around, i already have 2 water blocks sitting here for 5970 i cant use...among other numerous things, like a gtx 285 and few raptor drives...im like the parts warehouse...thermal 120, asus x58D premium board, i could build a 2nd machine out of spare shit...


Anyone know about the power supply question i don't have a inline watt reader...
 
does anyone actually read the posts before saying anything? seriously 4 people asked me the same thing i already answered ....lol

I HAVE 2 WATER BLOCKS FOR THE 5970 JUST SITTING HERE, THEY DO NOT WORK THEY MAKE THE CARD LOCK UP DESIGN FLAWS...

maybe you can read then post please im waiting for serious answers
 
HX1000 should be fine for that load. Which GPU blocks do you have that aren't working correctly?
 
again, its in the very first post i put up...

EK Block and Swiftech block...

the EK block has a .5 mil step that doesnt allow full contact with a chip, even if i add extra thermal pad...

Swiftech i have no clue what could be the problem there , all the thermal pads have indents on them , indicating they are making contact, games lock up after 15 mins of play...stock cooler back on i can run them all night
 
SDNYC09 said:
again, its in the very first post i put up...

EK Block and Swiftech block...

the EK block has a .5 mil step that doesnt allow full contact with a chip, even if i add extra thermal pad...

Swiftech i have no clue what could be the problem there , all the thermal pads have indents on them , indicating they are making contact, games lock up after 15 mins of play...stock cooler back on i can run them all night
Click to expand...

Hey, we're trying to help you. Sorry I didn't scroll over because your pictures are posted next to one another instead of ontop of one another. Because of this your paragraph with them listed has it at the very end, all the way to the right, I did look for it quickly.

What's your loop look like for the 2 GPUs? I'm wondering if you just don't have enough rad for both your i7 and dual 5970s under water.
 
all temps from gpu-z show the cards core never reaches 40 under load , the vmr's get to about 95c tops...

from the pump to a single rad double thick in the front of the case, to a dual rad single thick then to the cpu then to the cards... i know it was fine, you can touch the card when it was under full load, barely warm, these running full load stock cooler burn your hand...


sorry they show up to down on mine

the temp of the heat it blows out the back of the case is unreal...
 
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Does the side of your case have a fan? If not, I would add a 120mm right in between the cards.
 
no side fan just that one you see at the very bottom of the case that pulls air in and directly onto the cards
 
SDNYC09 said:
does anyone actually read the posts before saying anything? seriously 4 people asked me the same thing i already answered ....lol

I HAVE 2 WATER BLOCKS FOR THE 5970 JUST SITTING HERE, THEY DO NOT WORK THEY MAKE THE CARD LOCK UP DESIGN FLAWS...

maybe you can read then post please im waiting for serious answers
Click to expand...

No, I just look at pictures

Seriously the blocks are bad? non conductive paste on the core and ram, non conductive thermal pads on the voltage regulator module interface...a grounding issue possibly....or contact lack there of...they should refund your money DD makes full contact blocks.

730605398_XuM7u-M.jpg
730605388_CGf5A-L.jpg
 
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You could possibly have the same issue I have with my XFX 5970 which has a cold bug when using the EK wb. Running games with temps under 40c will constantly cause the infamous grey screen of death.
After powering down one fan and setting the other to low on the dual rad will let me coast around 45c to 48c with the card under load. I have had no problems whatsoever. I even had to run furmark to warm up the card before playing games to ensure no crash.

http://www.hardwarecanucks.com/forum/334615-post24.html

Like you, I had no issues with the original heatsink/fan.
 
I use the EK waterblock on my 5970 with a triple rad (dedicated loop) and max temps full load (even Furmark): cores 34-35 celsius and VRMs never go over 59-60 celsius. :)

No design flaw. I didn't got a single crash, bug, BSOD or any other problems in the last 2 months with my 5970+ Ek waterblock. With 9.12, then 9.12HF, 10.1, and now 10.2.

In the last 2 months, I've played all those games fully to the end without a single problem/crash/BSOD/GSOD: Dragon Age Origin, Mass Effect 2, Batman AA, Jade Empire, Stalker SoC Complete, King Bounty Armored Princess, and I forget some. :)

I had some crash early on (first 2 or 3 days), but simply raising my 2d idle clocks from 157/300 to 400/900solved all my ''problems''. :) Rock solid since then.
 
LEVESQUE said:
I use the EK waterblock on my 5970 with a triple rad (dedicated loop) and max temps full load (even Furmark): cores 34-35 celsius and VRMs never go over 59-60 celsius. :)

No design flaw. I didn't got a single crash, bug, BSOD or any other problems in the last 2 months with my 5970+ Ek waterblock. With 9.12, then 9.12HF, 10.1, and now 10.2.

In the last 2 months, I've played all those games fully to the end without a single problem/crash/BSOD/GSOD: Dragon Age Origin, Mass Effect 2, Batman AA, Jade Empire, Stalker SoC Complete, King Bounty Armored Princess, and I forget some. :)

I had some crash early on (first 2 or 3 days), but simply raising my 2d idle clocks from 157/300 to 400/900solved all my ''problems''. :) Rock solid since then.
Click to expand...

Like most, they have no issues. I think its a luck of the draw with the 5970. The first post I saw about the cold bug, I shrugged it off. After numerous tests, I can confirm my 5970 has the same issue. It isn't the waterblock, but the video card itself.

One thing I need to try is the 2d idle clock setup. Fortunately for me, it has never crashed in 2d, only 3d.
 
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