Help getting GPU mining working...

[bitjet]

Hey guys, picked up a nice ATI card today for cheap locally. win7 64bit

Im having trouble getting it to mine in the pool. Using the RCP miner..

This is what I keep getting.



Im using this command line

rpcminer-opencl.exe -url=http://mining.bitcoin.cz:8332  -user=xxxx -password=xxxx

should I be specifying more stuff. Im sorry Im an uber noob. could use some help.

Thanks!

[bitjet]

I've got it going with poclbm, but I have to run two instances to use both coers of the GPU is there anyway to combine my hash power? Is it worth doing that way vs 2 instances?

Also Im hitting 75c temp, is that acceptable?


thanks!

[Cryptoman]

I've got it going with poclbm, but I have to run two instances to use both coers of the GPU is there anyway to combine my hash power? Is it worth doing that way vs 2 instances?

Also Im hitting 75c temp, is that acceptable?


thanks!

There's no way to combine the two cores into a single hashrate, i.e., "crossfire" if you will.  But it doesn't matter.  You will still get the same combined performance.

If you're only hitting 75C, you must not be overclocking much.  My hottest miner runs 86C, 24 hours a day.  The GPUs are pretty much indestructible.  They will throttle if they get too hot.  It's your power supply you have to worry about.  Hopefully you have a Corsair or other reputable brand with sufficient rating.

[bitjet]

I know VERY little about overclocking.. yet the ati overclocking program doesnt do anything for some reason.

Ok I bumped my cpu clock up to 800mhz getting 30m more h/s per core than I was.. Any idea what good settings for 5970 is?

[Ricochet]

Regarding the original program, this probably won't work, but try adding "-gpu" to the very end of your command to launch the program. 

[bitjet]

I've got an 800w corsair power supply. Is it a good idea to install another 5970 with that power supply for a couple days until the 1000w I ordered comes in?

[Cryptoman]

800 watts is marginal as ATI calls for 850 with 2 cards.  It's likely to be OK since you have a Corsair and they are conservatively rated.

[bitjet]

I had ordered a 1kw psu from new egg and it should be here tomorrow. Now Im thinking i should have went with 850..

Will a 1kw power supply actually cost more to run than an 850 powering the same components?

[Mahkul]

I had ordered a 1kw psu from new egg and it should be here tomorrow. Now Im thinking i should have went with 850..

Will a 1kw power supply actually cost more to run than an 850 powering the same components?

I think you will be much safer with the 1000W, especially if you overclock.

I have a 1000W one running two 5850, and a 750W one running single 5970.