I'm running this card for a mining rig right now and it's at a constant 85% fan and about 74c. Should I down clock it? Noise isn't the issue, but if it's likely to blow the fan running like that I'd rather save the hassle.
I also have this card this card running in another machine super overclocked and it it runs the same temp but with a lower fan speed, around 65%.
Side note, if I was going to combine these cards into a single machine, that has to be upright, (cards will be on top of each other) which of the two cards should be the bottom vs the top? I have another machine with the 3L card (second one I listed), should I put both 3L's in one machine and have the 4L (vents out the back fan) in it's own rig? I have risers coming, but thanks to long shipping times they won't be here for a few weeks.
Topic: What is a good temp and fan speed? (Read 1333 times)
In my experience, fans die easily, depending on quality, at high RPMs for extended periods of time. I wouldn't recommend over 90% 24-7 if you have to. That said, fans and coolers are a lot easier to replace than a chip not under warranty.
Id rather kill the card 2yrs warranty and have them come with new fans lol, or an upgraded model lol
Im running 70% fans, that should be fine right?
In my experience, fans die easily, depending on quality, at high RPMs for extended periods of time. I wouldn't recommend over 90% 24-7 if you have to. That said, fans and coolers are a lot easier to replace than a chip not under warranty.
or you can allow the temp hell high and hope video cards will die out within the warranty period...... 
Here's a page that shows lifespans of led and capacitors, relative to temperature. IC's will have a similar relation of lifespan vs. temp. Just scroll to the 2 images.
http://ele-tech.com/html/relation-of-the-electrolytic-capacitor-and-life-span-of-led-lamps-and-lanterns.html
For me, I guess I try to stay at or under 70C for core and at or under 80C for vrm's. I would assume this to work out close to half the maximum "theoretical" life. (e.g. 75C @ 70% flux on LED chart for comparison)
http://ele-tech.com/html/relation-of-the-electrolytic-capacitor-and-life-span-of-led-lamps-and-lanterns.html
For me, I guess I try to stay at or under 70C for core and at or under 80C for vrm's. I would assume this to work out close to half the maximum "theoretical" life. (e.g. 75C @ 70% flux on LED chart for comparison)
Excellent charts dude ...thanks
also before i was able to get high overclocks of about 1250 on all the cards, but after a few crashes now i cant run those clocks anymore. Would reflashing the gpu bios help? or is it a hardware malfunction?
You should be able to underclock the memory all the way down to 100, use MSI AB.
will try that instead of trixx.
You should be able to underclock the memory all the way down to 100, use MSI AB.
Also, does anybody know if we can underclock our memory on these? I set it in trixx but I see in gpuz that it's always at 1250
Yes but not all combinations works, for example in my card, If I run GPU at 925 Mhz, mem must be 775 Mhz, any lower than this and it will jump to default 1250 automatically, If I lower GPU to 900 Mhz, MEM can be 750 Mhz not lower (this is on sapphire 7950 3GDDR5, dual fan) settings with TRIXX, at 925 my
temps are 63 C with 75% fan speed. (fans are a lot cheaper to replace than a VRM or worse (mem, gpu chip))
Thanks will try it out
Also, does anybody know if we can underclock our memory on these? I set it in trixx but I see in gpuz that it's always at 1250
Yes but not all combinations works, for example in my card, If I run GPU at 925 Mhz, mem must be 775 Mhz, any lower than this and it will jump to default 1250 automatically, If I lower GPU to 900 Mhz, MEM can be 750 Mhz not lower (this is on sapphire 7950 3GDDR5, dual fan) settings with TRIXX, at 925 my
temps are 63 C with 75% fan speed. (fans are a lot cheaper to replace than a VRM or worse (mem, gpu chip))
Also, does anybody know if we can underclock our memory on these? I set it in trixx but I see in gpuz that it's always at 1250
Here's a page that shows lifespans of led and capacitors, relative to temperature. IC's will have a similar relation of lifespan vs. temp. Just scroll to the 2 images.
http://ele-tech.com/html/relation-of-the-electrolytic-capacitor-and-life-span-of-led-lamps-and-lanterns.html
For me, I guess I try to stay at or under 70C for core and at or under 80C for vrm's. I would assume this to work out close to half the maximum "theoretical" life. (e.g. 75C @ 70% flux on LED chart for comparison)
http://ele-tech.com/html/relation-of-the-electrolytic-capacitor-and-life-span-of-led-lamps-and-lanterns.html
For me, I guess I try to stay at or under 70C for core and at or under 80C for vrm's. I would assume this to work out close to half the maximum "theoretical" life. (e.g. 75C @ 70% flux on LED chart for comparison)
Lower is always better, sadly with the reference blower cooler, you will need to choose between higher temps or higher fan speeds.
I don't recommend these as your primary GPU, I've had 2 so far, and both have artifacted under high stress. If you have good airflow and reasonable ambient, I'd say 50% fan speed and 77C is reasonable, for longevity of both. You can go higher, but as I said they seem fragile, and there's not enough long term data to really know what will happen.
I don't recommend these as your primary GPU, I've had 2 so far, and both have artifacted under high stress. If you have good airflow and reasonable ambient, I'd say 50% fan speed and 77C is reasonable, for longevity of both. You can go higher, but as I said they seem fragile, and there's not enough long term data to really know what will happen.
Hello,
Have sapphire 7950s reference design. What is the max fan I should run these cards on? Do the fans die easily? What temps should I aim for? for longevity?
Thanks
Have sapphire 7950s reference design. What is the max fan I should run these cards on? Do the fans die easily? What temps should I aim for? for longevity?
Thanks
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