Thanks guys just a question lets say I have 6 GPU.
With one PSU I connected 3 GPU and Mobo etc, another PSU I power other 3 GPU. When I turn on the PSUs should I be careful to turn them on at the same time? If I delay for a second??

Drop the CPU to 2 cores. Read up that the 990 needs further tweaking due to the wider ranger of unlockable cpus.

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Whats the problem if I mine only on the EU?

Hey guys,

I have some PSU to use and I would like to use them to power my GPUs on a single mobo. How do I make them work together?

down again

Thanks

Can use 2 rigs to mine with the same address? Or do I have to use two different address?

So far so good but the hashrate is 550kh/s. Thanks!

Hi guys,

I am really going crazy. I just bought a new PSU 900w: Antec HGC-900w. I was testing it on a rig with only 1 280x. It worked fine all day but when I came back home I found the rig off. I turned it on again and started cgminer. After few minutes the rig shutdown completely. The GPU temp is normal around 70degree. I am not sure if its the UPS.
The rig stays on for hours without problems but when I run cgminer then the rig just crashes. Something weird is the PSU fan is not spinning at all not even at startup, I am not sure its because its temp regulated.
Again the rig works fine for hours, it crashes after I run cgminer.

Thanks

export GPU_MAX_ALLOC_PERCENT=100
export GPU_USE_SYNC_OBJECTS=1

-I 13 -g 2 -w 256 --auto-fan --thread-concurrency 8192 --gpu-engine 1070 --gpu-memclock 1500 --gpu-powertune 20                               

 -I 13 -g 2 -w 256 --thread-concurrency 8192 --gpu-engine 1070 --gpu-memclock 1500  --auto-fan

I get 740kh/s each card but the temp is a big issue. Keep them cool if the temp reaches 80c you'll see a drop in hashrate.

Let me know

How do I run it? lol

Is there something wrong from my side? 2.2MH/s and I got paid only 0.017BTC

what voltage did you put them? what about underclocking?

I have a rig with 2x 280x. one is 69celsius other 91celsius running fun 100% speed all the time. Sometimes the cards stop working, the fun keeps moving but there is not video output. I have to shut the rid wait few seconds and turn it on again. Whats the problem? Temp? PSU?

Thanks for the info. They are gigabyte GV-R928XOC-3GD.

Hi guys,

I am making a new rig, the shop I am buying for sold me a HCG-900 to power 3x R9 280x. I am back home but I am having doubts, do you think it's enough?

My only assumption is the PSU. 7950 in full stress consume 300W, 900W only for 3 of them, is 1100W enough?

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