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Can I use 2 different GPUs at once?
Posted: Thu Mar 26, 2020 5:09 pm
by GunnarT48
I wanted to know if I can put my unused GTX 970 in my PC alongside my RTX 2060 Super. I'm not currently using the 970, so I figure I'm gonna use it if I can.
I appreciate any responses.
Re: Can I use 2 different GPUs at once?
Posted: Thu Mar 26, 2020 5:35 pm
by Jesse_V
Hi and welcome to the forum.
Yes you can. This should also be automatic. When you download the F@h software, it should automatically detect and configure both cards for you automatically. I'm currently using a GTX 970 and a 1080TI in the same system. They can fold right along with the CPU, no problem. Let us know if you run into any issues.
Re: Can I use 2 different GPUs at once?
Posted: Thu Mar 26, 2020 5:39 pm
by jonault
If you're already folding on the 2060, finish your current work unit before installing the 970. Adding a new video card can sometimes cause the FAH client to dump a work unit that's in progress.
Re: Can I use 2 different GPUs at once?
Posted: Thu Mar 26, 2020 8:19 pm
by GunnarT48
Thanks for your answers!
Re: Can I use 2 different GPUs at once?
Posted: Fri Mar 27, 2020 5:22 pm
by Joe_H
Ideally the client should be uninstalled along with data after finishing the current WU. Install the new card and drivers, reinstall the folding client. Theinstaller does a better job of scanning for the hardware than the client by itself, and usually gets the configuration right.
Before uninstalling, you may want to keep a copy of your settings to use for copy/paste into the client after reinstall. Easiest would be to keep a copy of the config.xml file located in the F@h data directory along with the log and directories for the work files.
Re: Can I use 2 different GPUs at once?
Posted: Fri Mar 27, 2020 8:00 pm
by lazyacevw
FWIW, I just dropped in a Titan XP alongside my 1080TI, added the slot, and I was good to go (a Linux system). No risk in setting the current tasks to Finish however and just waiting for them to complete before the the upgrade.
Re: Can I use 2 different GPUs at once?
Posted: Sat Mar 28, 2020 5:56 am
by Joe_H
A reinstall is less of an issue after hardware changes on Linux, the same can not be said for Windows. Its device management related to GPUs has some quirks that sometimes do not play well with the folding software.
Re: Can I use 2 different GPUs at once?
Posted: Sat Mar 28, 2020 7:02 am
by lazyacevw
I could see that being the case. I've spun up 4 Linux Mint based folding machines without much issue. When I tried to build a 8 GPU Windows based rig, I almost threw it against the wall. Still working out the kinks with that one.
Another small reason for everyone to give Linux a try! (as if increased PPD wasn't reason enough!).