Topic: hd 6950 crazy temps ?! - page 2. (Read 5531 times)

right ive taken one card out so just running one on its own...........

temp 98c
fan (auto) 71%

i think these cards stock coolers are just a bit crap !!!!!!!!!!!!!! i think i might send them back 

250 Mhash/s is way too low. 100°C is obviously way too high, too. my cards were at 75°C (@ 55% fan) and produced a good 330 Mhash/s without any adjustments (except unlocking the shaders). enabling the power-thing in amd overdrive and overclocking to 900 MHz made me get about 385Mhash/s. that's what i'm currently running. i can't tell you much about the temperature now, though, because i've switched to watercooling (if it's your only computer at home, you'd go crazy after a few days of the fan running at 55%.)

You might want to consider a PCIe x16 extender to allow lower placement of your second card.  Otherwise, I wouldn't suggest using two double-wide cards on a board without space between the slots unless you are going caseless with massive external fans or watercooling.

that's one of my problems i think, that i only a have a 2 slot board ! so the cards are nearly touching lol 

even so i didnt think the temps would be so high!!!!! 

While I'm not certain of your issues, I too have a pair of 6950's running, so maybe my setup will offer you some insight:

One card is current slotted in the top, the other card in the bottom slot, with an empty slot in between them for better airflow.  The bottom slot only offers PCIe x8, but this is perfectly fine for both mining and gaming.

Catalyst 11.1 drivers
Stream SDK 2.1
Win 7 64-bit

I'm using a PCI output fan directly above my top GFX card to pull heat out of the case and prevent heat exchange between the GFX and CPU.  Additionally I am using a AeroCool Shark 140mm case fan as an intake fan bringing in air directly onto the GFX cards from the side of my case, where there is about a foot of open space before a wall.  My case does have front intake fans and top output fans but they run at very low speeds and don't really effect GFX temps due to their positioning.

The room in which my PC runs is kept between 20-23C (68-73F) at all times.

I use the -f60 flag on both of my cards, giving them 98% utilization.

SPECS 1:  (Cool and Quiet)
Core Voltage 1049mV
Core Clock 830MHz
Mem Clock 650MHz
Fan Speed 53%
Top Card Temp Low 68C
Top Card Temp High 74C
Bottom Card Temp Low 74C
Bottom Card Temp High 80C
TOTAL 600Mhash/s


SPECS 2:  (Loud and Hot)
Core Voltage 1100mV
Core Clock 890MHz
Mem Clock 650MHz
Fan Speed 100%
Top Card Temp Low 73C
Top Card Temp High 79C
Bottom Card Temp Low 76C
Bottom Card Temp High 83C
TOTAL 660Mhash/s

Let me know if it helps.

Yea, I have a HIS 6970 that runs @65C idle and jumps to 90C+ within 10 seconds of mining.
I believe it may have to do with poor thermal paste from the factory.
I'm going to scrape the junk off and apply some real arctic silver. 
Maybe that will help.

thats the kind of temps i was expecting ?!?! its only about 18c here and i have the side off the case !!!!!!

i might try another sdk maybe 2.1 ??

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

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