Can you run 2 different GPUs simultaneously?

[godcomplex_22]

I have a decent amount of experience with computers, but I have an odd question.  I have recently started crypto mining to make use of my hardware when I'm not gaming and I have my new 5700xt, but I also have an rx 580 that isn't being used that i'd like to put to use if possible, does anyone know if it's possible for me to use both of these GPUs simultaneously in the same system, assuming I can support the power?  I know I can't run crossfire(since they are different GPUs) but if i could make use of both of them while mining, and leave the 580 mining while I'm gaming, then it would still be beneficial.  I use Nicehash to do my mining, and I'll put my full specs below.

 

R5 2600 CPU

Asus B450-f gaming Mobo

rx 5700xt (Asus Tuf Evo)

rx 580 8gb (Sapphire Pulse)

16gb 2666Mhz Corsiar Vengeance LPX RAM

2tb HDD

1tb NVME

240gb M.2 SATA

735w Raidmax PSU

 

[WhitetailAni]

1 minute ago, godcomplex_22 said:

I know I can't run crossfire(since they are different GPUs)

This is only true for Nvidia - that you have to have the exact same card. For AMD, they just have to be from the same generation - so a 5700XT and a 5700 could run in Crossfire, a 5600 and a 5500XT could, but a 5500 and a 580 couldn't.

2 minutes ago, godcomplex_22 said:

735w Raidmax PSU

Which exact Raidmax PSU?
I think you should be able to, though.
It will just slow your 5700XT down.

[trag1c]

I have my old GTX 980 in my system for offloading local renders to so that I can continue to work uninterrupted with my GTX 1080. You don't need/want Crossfire/SLI for such purpose. All you want to do is slap both cards in and power them, they will show up as separate discrete cards that you can assign work to.

[Alex Atkin UK]

26 minutes ago, godcomplex_22 said:

I have a decent amount of experience with computers, but I have an odd question.  I have recently started crypto mining

I'm surprised you didn't find the answer to this while researching how to setup mining, considering hardcore miners all use many GPUs hooked up to a single PC.  There are even M.2 to PCIe adapters so you can use every last PCIe connection to stick a GPU on it.

[VeganJoy]

indeed, you can just plug up both card, flash a mining bios to the 580, and have it idly mine while you do other things on the 5700xt. you'll likely drop to x8 pcie lanes on the 5700xt and there will be a tiny bit of overhead from the mining software, but these will be completely irrelevant performance wise. the only real issue is airflow, whichever card is above the other will run 10-15C hotter as it'll be getting the hot exhaust from the other card. tuning your undervolt on the 580 will help but best case scenario, it's an extra 100-140w that needs to be removed by the case fans. i've been learning a bit about mining myself and i've been using 1070s; i have a huge p500a case with 3x 140mm intakes and 1x 120mm + 2x 140mm exhausts and the top card still runs 10C hotter than usual (i set power limits to 120-130w, which is well under what you'd use for a gaming load). if you have a smaller case with 2 or 3 fans, you may run into thermal issues as both of those cards already run a bit on the hotter side. you'll have to see for yourself, but i wouldnt be surprised if you have to stick with the 180w bios for the tuf

[Mick Naughty]

Just set the one card to mine, that simple. Then game. Dont need to do anything special. Id flash it though to make it really worth it.