Bitcoin Forum

I have a sapphire 280X dual-x.Its been over a month since I am using it.But now that summer is arriving temperature is starting to rise.

I even lowered the gpu clock and mem-clock.Now at 690khash(down from 725+) I am getting 80 degrees.Summer's heat hasnt fully began yet.Temperature then will be more.

So if I run the card at 82-85 degree celcius how long might it last any idea?

Not long. What's the VRM temperature? What's the fan speed?

See "Sensors" on GPu-z

Undervolt and otherwise optimize your videocard. https://bitcointalk.org/index.php?topic=435438.msg4849281#msg4849281

Does it really matter if it's still under warranty?

74C is fine. I wouldn't worry until you start hitting >80C.

Also, don't be afraid to bump your fan speed up. Burning out a $5 fan by running it at 100% is a lot cheaper than burning out a $400 GPU by roasting it. Know what I mean?

Be carefull, dual-x don't have vrm temperature sensors, and these get hot. Check the back of the card, if you start seeing some white traces over the pcb, specially near the psu power connection and the caps, it means vrms are overheating. At stock voltage vrms when gpu is 80c should be around 120 C. It looks like you are undervolting in gpu-z, if so you shouldn't have a problem at 80 C. I wouldn't go much further though with dual-x. Stock voltage at 85 C for a long time may fry some caps near the vrm.

I'm using them in summertime atm, ambient temp 35-45 C, open case 80mm apart from each other and 80mm coolers in between them to renew the air. They are all at 85% fan. They never go over 75 C this way, on cool days they are at 65 C. Perhaps you should work a bit on your frame to get it to run cooler.

As for the warranty, if you fry it due to vrm overheating they should replace it. Don't say you used them for mining, tell them you where doing render and after some hours of processing the card blew.

I haven't had a fan fail on me yet, and got 5 dual-x running at that speed for almost two months.

To undervolt download sapphire trixx, tick force constant voltage in the configuration and drop it to 1175. That is a safe voltage and that plus the extra 10% fan will make them run a few C's lower. If you want to undervolt further do it at small steps and test for stability each time.

Well that will help. I have 220 as well here. If you are not going to uv you will need to separate the cards with risers too keep the temps down.

It depends mainly on how apart are the cards from each other. I placed them 80mm apart because I have several 80mm coolers from old office psu's that malfunctioned over the years. So almost all the air that the gpu cooler absorbs is fresh air from the 80mm coolers. You may get 10 degrees less with a fan, but it all depends on how you place it  ;)

Well I can't say for sure which one is the best, since in my country we have a very limited supply of gpus. I only know from what I read. You may want to look for the sapphire 280x toxic, there was an asus I read good stuff about as well. Beyond that I don't know, you should look for each model you are able to get and read what issues people using that card have.

My 7970 DualX works at core/memory =1000/1500MHz, with core/memory = 1.075/1.5V, the temperature is 70C. I use MSI afterburner. My DualX has VRM monitor.

If it is under warranty I would go ahead. Mine runs at 77-80 too.

I hope thats a fine temperature because I can't get any of my 280x cards below 77-83