Topic: hd 6950 crazy temps ?! (Read 5518 times)
i lold
theres only 1 way to keep the heat down when everything else fails..
if fans blow down from the top is best, imo. 2nd best is from the back towards the front, but make sure fresh air is getting into the card fan in any case.
i'll report back when i get the sapphire cards tomorrow !
Be careful running your fans at 100% all the time; anything over 70-80% will dramatically reduce the fans lifetime and could very possibly burn out the card if the fan dies but the card continues running (especially with the single-fan reference models). Playing with my build a bit, I'm now working with the following settings:
Non-reference 6950's with the duel-fans and a side panel fan.
Core Voltage 1049mV
Core Clock 870MHz
Mem Clock 650MHz
Fan Speed 70-80% curve
Temps on both Cards 70-72 C consistently.
As I mentioned in a previous post, heat has more to do with the voltage and less to do with the clock speed - as long as the voltage is high enough to stably support your clock speeds, you're g2g.
Non-reference 6950's with the duel-fans and a side panel fan.
Core Voltage 1049mV
Core Clock 870MHz
Mem Clock 650MHz
Fan Speed 70-80% curve
Temps on both Cards 70-72 C consistently.
As I mentioned in a previous post, heat has more to do with the voltage and less to do with the clock speed - as long as the voltage is high enough to stably support your clock speeds, you're g2g.
right ive sent them back ! and got these instead...
http://www.sapphiretech.com/presentation/product/?cid=1&gid=3&sgid=1041&pid=1235&psn=000101&lid=1&leg=0
hopefully dual fans and a better cooler will do the job !
http://www.sapphiretech.com/presentation/product/?cid=1&gid=3&sgid=1041&pid=1235&psn=000101&lid=1&leg=0
hopefully dual fans and a better cooler will do the job !
I run everything at 100% and sleep in the room 
And of course, an additional fan pointing at the case is required.
And of course, an additional fan pointing at the case is required.
reference design is probably the best bet because the air goes straight from the card to outside the case. if i hear you speaking about 100%, i get the chills. 50% was so damn loud, i couldn't imagine going for 100%. for dedicated rigs in a different room, it's okay, but having the fans blow at 100% in the room you browse the internet is way too loud.
I am using this Vantec tornado fan on the top of my Lian Li case. It's loud like jet engine but sure does keep the cards cool. It has tremendous airflow, even at moderate rpms.
http://www.newegg.com/Product/Product.aspx?Item=N82E16811999612&cm_re=vantec_tornado-_-11-999-612-_-Product
reference design is probably the best bet because the air goes straight from the card to outside the case. if i hear you speaking about 100%, i get the chills. 50% was so damn loud, i couldn't imagine going for 100%. for dedicated rigs in a different room, it's okay, but having the fans blow at 100% in the room you browse the internet is way too loud.
92c is normal only on a 6990 core or a 5970 core. 102 is unstable for any GPU.
Your 6950 should stay at 65-80c if you add a simple table fan next to it.
Or download MSI Afterburner and set the fan speed to 100%.
You can also do this in Catalyst control center.
Your 6950 should stay at 65-80c if you add a simple table fan next to it.
Or download MSI Afterburner and set the fan speed to 100%.
You can also do this in Catalyst control center.
Don't run auto fans! Run 100%. (Unless you get low enough temps without 
)
)I am running 100% on all my cards, no-case, with a high speed deskfan blowing on the units. The cards just cannot breath side by side. The center fan configuration blows.
Don't run auto fans! Run 100%. (Unless you get low enough temps without )
) just started mining today ...(and yes i know dont start !!! but im still going to do it )
i got two xfx hd6950's using phoenix or guiminer the temps are very hot 102c on one card and 92c on the other and im only getting about
240 mh/s out of them most disappointing 
catalyst 11.5 drivers
app sdk (stream sdk) 2.4
windows 7 x64
any ideas chaps ?!?! as i was looking to overclock and push these to the max...currently they suck ! lol cheers onis_uk
)i got two xfx hd6950's using phoenix or guiminer the temps are very hot 102c on one card and 92c on the other and im only getting about
240 mh/s out of them
most disappointing catalyst 11.5 drivers
app sdk (stream sdk) 2.4
windows 7 x64
any ideas chaps ?!?! as i was looking to overclock and push these to the max...currently they suck ! lol cheers onis_uk
Hmm I dont know.. I've only been in the game for about a week. I don't have AC in my house and hits hot here. but I still can keep them under 80 degrees fully overclocked usually. I do have big fans on them though. I use linuxcoin though. Has everything you need for the linux noob to get up and running. All can be run from a USB drive.
I have 8 visiontek 6950's
I have 5 of the same cards and it is damn near impossible to keep them cool. In general any non-referenced designs with the center fan suck if you are packing the cards together. I am going to just let them run as cool as I can and if they burn out I am going to keep sending them back until the manufacturers learn to provide sufficient cooling.
Those temps are wayyyy too hot. I spoke with Sapphire Tech Support the other day on my 6950 and according to them, anything over 92 is a problem. I'm running one of the older reference Sapphire 6950's OC'd to 860/625 and it stays at a steady 63 degrees at 70% fan.
Yeah, the heatsinks on the XFX cards are crap. The PowerColor cards have the two fans and heatpipes, but be careful when using them side by side, the screws on the back stick way out and will interfere with the fan blades of the card above it.
Even the Sapphire cooler is better. Bigger and with heatpipes. Have no clue why XFX stuck crappy heatsinks on a card, then factory OC them.
Even the Sapphire cooler is better. Bigger and with heatpipes. Have no clue why XFX stuck crappy heatsinks on a card, then factory OC them.
71%? reference design cooler?
no it has an xfx cooler ! and its not too great on these cards, think i'll send them back tomorrow and get reference cards
cheers for the info Naypalm
wow ! i want those temps ! lol
also interested with your other specs like miner, drivers, stream sdk etc ...
cheers onis
also interested with your other specs like miner, drivers, stream sdk etc ...
cheers onis
Sure thing! I have both cards OC @ 890Mhz
mem is @ 650Mhz
fan is at 100% (You need this)
No Side panel to the case.
Power control settings @ 20%
I mine with poclbm
The software I'm using is CCC (11.5) to control fans and also power settings. I use Sapphire Trixx 4.0.1 to control GPU and memory clocks (Trixx sometimes needs to be reset after using CCC), and I use MSI Overdrive 2.1.0 to "sync" (I actually move a setting by one blip and hit apply, lol) the two cards settings since Trixx will only config one card.
Hope this helps!
71%? reference design cooler?
wow ! i want those temps ! lol
also interested with your other specs like miner, drivers, stream sdk etc ...
cheers onis
also interested with your other specs like miner, drivers, stream sdk etc ...
cheers onis
Hey OP, we have the same cards!
I'm getting ~350Mhps from each card. Top sticks around 75C and bottom is 70C. sticky tapes and extra case fans are your friend! Good luck and watch them temps!
I'm getting ~350Mhps from each card. Top sticks around 75C and bottom is 70C. sticky tapes and extra case fans are your friend! Good luck and watch them temps!
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