Mixing Radeon/Nvidia GPU's in one system

[Mike35]

Hi guys, I have 2xRadeon RTX 580 GPU's folding.

My motherboard supports a maximum of four GPU's.

I am thinking of putting the two Nvidia cards I have in the pc as well for folding(no crossfireX/SLI)

They are Nvidia GTX 780TI's.

•Do you guys think that it would be a good idea as the cards are just laying around not being used? Would only use them for folding.

The Radeon GPU's are 8gb each and the Nvidia ones are 3gb each.

[toTOW]

It should theoretically work, but mixing two OpenCL platforms in FAH is often a mess ...

[foldy]

I could run AMD and Nvidia GPUs on Windows without issues.

Only think about power usage in total if that is an issue for you.

[foldinghomealone2]

Some feedbacks show that mixing GPUs might not work properly.

As GPU folding needs some decent PCIe connection (3.0 x8) (using Windows) for faster GPUs you have to make sure that your mainboard can support at least 2 times 3.0 x8 for the Radeons.
As the 780Tis are quite slow a slower PCIe connection would also work.

Personally, I don't think it's worth the hassle.

[Mike35]

Okay, I see. Thanks guys

Also.. I have an Core i7 CPU with 4 cores and 8 threads, I've set F@H to use the CPU as 6 cores available, I hope it won't cause issues, better number to choose than 6 threads?

[PantherX]

...I have an Core i7 CPU with 4 cores and 8 threads, I've set F@H to use the CPU as 6 cores available, I hope it won't cause issues, better number to choose than 6 threads?

Welcome to the F@H Forum Mike35,

If the i7 system is a spare one and you're only folding on it, then you can use 8 CPUs if you're not folding on GPUs. If you have CPU and GPU folding on the same system, then 6 is a good number.

[paulmd199]

I think that's not going to work, but not for the reasons above. Each GTX780 TI takes two slots, likewise the RX580. You won't be able to fit four total cards, you will get two.

[foldinghomealone2]

Riser cables for everyone

[ajm]

It is better to (clean) install the drivers BEFORE installing FAH.
If FAH is already installed, it is safer to uninstall it (including "data" [keeping a copy of "config.xml" for later reference, eg passkey]) and reinstall it when the cards and the drivers are there.