Bitcoin Forum

Other => CPU/GPU Bitcoin mining hardware => Topic started by: Betsinski on June 15, 2011, 06:34:28 PM



Title: Xfire between 6950 and 5770
Post by: Betsinski on June 15, 2011, 06:34:28 PM
Hello,

I just got my new 6950 1gb, installed it, latest drivers - everything okay.
But when I added the old 5770 in the setup I can't put them in crossfire.
In device manager im able to see both of them but not in the guiminer in example.
Also I don't see any option like "enable crossfire" in CCC ?
Is there something Im missing ?


Title: Re: Xfire between 6950 and 5770
Post by: Notrem on June 15, 2011, 07:21:44 PM
why do u want to crossfire them ?


Title: Re: Xfire between 6950 and 5770
Post by: bleedkira on June 15, 2011, 08:49:22 PM
You can only crossfire cards of the same model. EG: two 5770's. You're going to have to use a dummy plug.


Title: Re: Xfire between 6950 and 5770
Post by: Jack of Diamonds on June 15, 2011, 09:00:27 PM
You don't even need a dummy plug.

1. Start miner on 6950 as usual, make sure it's running.

2. Plug monitor cable to 5770 and start miner, make sure it's running.

Then just re-plug it to your 6950 and do whatever you want. The card will keep running despite there being no monitor now.
The client only needs video signal for the initial start.


Title: Re: Xfire between 6950 and 5770
Post by: EpicFail on June 15, 2011, 11:34:58 PM
You can only crossfire cards of the same model. EG: two 5770's. You're going to have to use a dummy plug.
Actually it is slightly less restrictive. You should be able to crossfire cards with the same hundreds number, e.g 5830 and 5850 can be crossfired.


Title: Re: Xfire between 6950 and 5770
Post by: RyNinDaCleM on June 16, 2011, 09:55:46 PM
You can only crossfire cards of the same model. EG: two 5770's. You're going to have to use a dummy plug.
Actually it is slightly less restrictive. You should be able to crossfire cards with the same hundreds number, e.g 5830 and 5850 can be crossfired.
This^
You absolutely cannot CF 2 different generations (Ex 6xxx with 5xxx), and you cannot CF 5800 with 5700. However, you can CF 5800s with 5970!