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6970/6970/6950 trifire

  • Thread starter Thread starter Ovr
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Ovr

Ovr

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16 Dec 2004
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Leicestershire
Having literally just installed a trifire setup into my PC I'm slightly concerned by a few things, the main two being:

a) The sheer number of crashes on launching 3d applications, particularly BF2.

b) Temperatures.

With regards to point a) I had a crossfire setup before and have not formatted or reinstalled drivers etc. since adding this third card, could it be a problem sorted by a simple reinstall? I know I had a few issues when going to crossfire with weird colours on the screen etc. but they were sorted with a full driver cleaning session. I'm just apprehensive to do a full format if there is something simple I am missing regarding settings etc. but I don't think I've missed anything!

b) The idle temperatures of the cards are (from nearest CPU to front of case) 51,°C, 44°C, and 37°C at the end. The case is a Silverstone Raven RV02 so the airflow is what I would describe as very good. After a fifteen/twenty minute session of Metro2033 maxxed out the cards were reading maximums of 93.5°C, 93°C, and 76°C respectively - are these ok? The fans were not going nuts and I don't think went above half speed....do they start exponentially spinning up past 95°C or is it 100°C? I know my 4870x2 used to hit a 100°C now and again which I didn't like but was told it wasn't a problem.

Here is a picture of the installation (apologies for the shocking quality) where I've jammed some cotton buds between the cards to open them up and generate some airflow. It seems so daft that we are still stick on ATX size constraints when a few extra mm on the motherboard would provide ultimately better cooling in 2 card and 3 card setups :(

img00059201109061944.jpg


It's impossible to neaten up that cable fest at the bottom as there is nowhere for them to go neatly and still connect to the cards!

Any thoughts or opinions greatly appreciated!

Many thanks,

Matt.
 
Although I know it was a few models ago now when I had 48 series cards it took allot of care with drivers to make them play nice when you change between tri, cross, and single gpu not sure if this has changed much recently.

are all the cards able to do the same clock speeds as ive heard this being a problem two.

Might be worth getting some pci-e power extension cables just to clean that up alittle? looks like you have a good spacing between the cards to keep them cool.

Maybe the the 6950 is thicker then that could be more right as I assume the card has a better cooler then it might help?
 
My setup below, 6970, 6950, 6950 just got new board so i can use the 3 cards unlike before with a board that didnt support 3.. anyway your max temps are to high, i would say 80 tops, turn up your fan speeds or use Msi Afterburn so they dont go above 80 etc.. What speed do you have them set at???

07092011389_1.jpg
 
Just looked at your pic again when i had my cards setup like yours one on top of the other i was hitting about 75 tops with rhe middle card but i alway put my fans on at 85% when in games..

2nd i also had a xfire seup then put the 3rd card in and had crashes in BF2, just put a fresh copy of windows on for what it worth :)
 
I have left the fan profiles on auto, might be worth using something like Radeon Pro to up them in 3d apps? They're not really spinning up that much!

Can't find an AMD spec showing max temps anywhere :/
 
Those tempts don't seem that bad to be honest (you may want to monitor closely with GPUZ though to ensure the cards aren't thermal throttling themselves).

Sometimes I get temps that high with a single card and decent airflow...
 
I'd say that your temperatures are not bad at all. If you really worry about temps and want to improve lifespan, then simply use MSI Afterburner to customize a fan profile for them. I would stay with a quiet machine if I can, because graphics cards are supposed to be upgraded fast and I don't really worry about lifespan covered by warranty.
 
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