Asus z97-p 2 GPUS

[msvelev]

Hi everyone,

 

I have an Asus Z97-P motherboard and a gtx 970 in the PCIE 3.0 x16 slot. I use the PC almost exclusively for folding and I want to add another card (not in SLI).

The other slot is a PCIE 2.0 x16. If I move my 970 to it and put let's say a 1070 in the 3.0 slot, will I get optimal performance from both cards?

 

Thanks!

[Electronics Wizardy]

The lower slot is running of the chipset and a bit slower, but for folding it should make a difference.

[msvelev]

53 minutes ago, Electronics Wizardy said:

The lower slot is running of the chipset and a bit slower, but for folding it should make a difference.

How much of a difference do you think it'll make? Should I get a new MOBO?

[Simon771]

Not sure about performance differences if you are running SLI on 3.0 or SLI with one card on 2.0 and the other one on 3.0

But you can get something like Z97 Krait for 100$ and it should work great

[msvelev]

51 minutes ago, Simon771 said:

Not sure about performance differences if you are running SLI on 3.0 or SLI with one card on 2.0 and the other one on 3.0

But you can get something like Z97 Krait for 100$ and it should work great

I'm going to run 2 different GPUs which can't and won't be in SLI.

[Electronics Wizardy]

5 hours ago, msvelev said:

How much of a difference do you think it'll make? Should I get a new MOBO?

For folding, less than 5%

[Imakuni]

7 hours ago, msvelev said:

Hi everyone,

 

I have an Asus Z97-P motherboard and a gtx 970 in the PCIE 3.0 x16 slot. I use the PC almost exclusively for folding and I want to add another card (not in SLI).

The other slot is a PCIE 2.0 x16. If I move my 970 to it and put let's say a 1070 in the 3.0 slot, will I get optimal performance from both cards?

 

Thanks!

Actually, your "2.0 x16" only runs at x2.

 

It's hard to precise how much performance you'd lose on Folding, due to the lack of testing on newer apps and architectures. But, there have been reports of huge performance hits on a 970 running at 2.0 x2, so I'd expect yours to take a big hit as well.

[msvelev]

18 hours ago, Imakuni said:

Actually, your "2.0 x16" only runs at x2.

 

It's hard to precise how much performance you'd lose on Folding, due to the lack of testing on newer apps and architectures. But, there have been reports of huge performance hits on a 970 running at 2.0 x2, so I'd expect yours to take a big hit as well.

I just read in the user guide that you're right. 2.0 x2 sounds too little for a powerful GPU such as the 970. Guess I'll first buy the new GPU and if I see dramatic drop in performance, I'd get a new mobo.

Thanks!

[Imakuni]

9 minutes ago, msvelev said:

I just read in the user guide that you're right. 2.0 x2 sounds too little for a powerful GPU such as the 970. Guess I'll first buy the new GPU and if I see dramatic drop in performance, I'd get a new mobo.

Thanks!

It's all about the app, rather than how powerfull a GPU is. In F@H's case, the app needs a bit of bandwidth.

 

If it was, say, PrimeGrid's manual sieve, you could even run a Titan X at 1x and have no loss at all.