Two different GPUs in same mining rig?

xschris

newbie

Activity: 14

Merit: 0

Quote from: maxpower on May 05, 2013, 09:10:32 AM

Quote from: hashfiend on May 05, 2013, 08:53:45 AM

Yes, you can use two different models without trouble.

Run two instances of cgminer, one for each GPU.

Make sure to disable ULPS as I just described here:
https://bitcointalksearch.org/topic/m.2035320

Thanks! I had no idea about ULPS, so you just saved me many hours of frustration. :-)

Would disabling ULPS make integrated video work when nothing attached? I herd I can mine on the onboard for bout half what my GTX650 does

themoosegoesmoo

newbie

Activity: 6

Merit: 0

Quote from: hashfiend on May 05, 2013, 08:53:45 AM

Yes, you can use two different models without trouble.

Run two instances of cgminer, one for each GPU.

Make sure to disable ULPS as I just described here:
https://bitcointalksearch.org/topic/m.2035320

I think there are some driver issues if you try to use 7xxx cards with 5xxx/6xxx cards, at least in linux I wasn't able to get both recognized at once and ended up having to put the 7xxx cards in a separate rig.

Nekon

newbie

Activity: 5

Merit: 0

Quote from: hashfiend on May 05, 2013, 08:53:45 AM

Yes, you can use two different models without trouble.

Run two instances of cgminer, one for each GPU.

Make sure to disable ULPS as I just described here:
https://bitcointalksearch.org/topic/m.2035320

Hey, it solved to me a problem I though it was related with drivers for mixing cards.. did not noticed about this, thanks!

hashfiend

newbie

Activity: 14

Merit: 0

Quote from: maxpower on May 05, 2013, 09:10:32 AM

Thanks! I had no idea about ULPS, so you just saved me many hours of frustration. :-)

I am not 100% sure if it is required for every rig or if only some are affected. When it happens though Windows disables any GPUs that don't have displays attached to them.

If it does happen there are two solutions that I am aware of: Disable ULPS (easy, free, and seems to always work) or create dummy dongles you can plug into the DVI port on the card. Before someone figured out to disable ULPS the dongles were the only solution.

maxpower

sr. member

Activity: 456

Merit: 250

Quote from: hashfiend on May 05, 2013, 08:53:45 AM

Yes, you can use two different models without trouble.

Run two instances of cgminer, one for each GPU.

Make sure to disable ULPS as I just described here:
https://bitcointalksearch.org/topic/m.2035320

Thanks! I had no idea about ULPS, so you just saved me many hours of frustration. :-)

hashfiend

newbie

Activity: 14

Merit: 0

Yes, you can use two different models without trouble.

Run two instances of cgminer, one for each GPU.

Make sure to disable ULPS as I just described here:
https://bitcointalksearch.org/topic/m.2035320

maxpower

sr. member

Activity: 456

Merit: 250

Is it possible to use two different models of GPU in the same mining rig (e.g. 1x 6850 and 1x 5770)? If so, how can I mine with cgminer using both GPUs? Would I need to run two separate instances of cgminer, or would cgminer be able to mine from both at once? Or, is there a better way to do this?

Thanks!

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