4 XFX R9-290x, Asrock H81 BTC, help me please :(

[speedyit]

Ok, so I have 5 of the above cards on windows 8.1 with CGwatcher and CGminer, but am currently only mining (or attempting to!) with 4 for the time being.

Last night it was mining for 30 minutes @ 800kHs which although not as good as I want, it was something, then I rebooted to make move it and now nothing.

Today I can't even get it to mine, it just crashes a few seconds after it starts mining, any help is greatly appreaciated!

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[notlist3d]

Ok, so I have 5 of the above cards on windows 8.1 with CGwatcher and CGminer, but am currently only mining (or attempting to!) with 4 for the time being.

Last night it was mining for 30 minutes @ 800kHs which although not as good as I want, it was something, then I rebooted to make move it and now nothing.

Today I can't even get it to mine, it just crashes a few seconds after it starts mining, any help is greatly appreaciated!

Can you post more specs of your rig, and what your setup is?(how your powering, risers, is one card on board?)

And that motherboard can be a pain to say the least.  Just set up two rigs with motherboard, was not as smooth as other motherboards I had used.

[Joerii]

I build a rig yesterday with the Asrock h81 and I love it so far.

- Did you power both of the 4 pin power connectors on the board ?
- Did you remember NOT to power the risers ?

If those things are OK, I suggest you take everything apart and build it up again. Sometimes that's just the best way of finding something that wasn't plugged in right.

Good luck. feel free to PM me if you have questions.

[speedyit]

Spec: 2x Asrock H81 Pro BTC board
10 x XFX R9 290X GPU's
4 x 4gb ddr3 1600
4 x Revolution 87+ 1000w psu's
Powered risers (now unplugged)

The intention was to run them as two separate rigs and upgrade two of the psu's.

If I run three cards they are fine, add the 4th card and it's game over.

I was (on the advice from another forum) running powered risers rather than the molex ports, I will swap test now.

Config wise I haven't even been able to get it run using stock files :/

[speedyit]

Seems like using the risers unpowered solved part of it, now I will move on to configuration, thank you for now!

[speedyit]

OK, was hashing up to 900kHs, will run for 20 minutes max and then the fans go loud and it crashes with no signal on screen.

Any info you need just say, thanks.

[miner765]

OK, was hashing up to 900kHs, will run for 20 minutes max and then the fans go loud and it crashes with no signal on screen.

Any info you need just say, thanks.

I'm also struggling with a very similar configuration. Are you overclocking the cards? How are PSU1 and PSU2 connected to GPU's/mobo?

[speedyit]

Standard clock speeds, 2 psu's linked via atx rail splitter, 1 psu powering two cards, other powering 2 cards, board and ssd

I'm happy to pay someone who can get this up and running reliably :/

[bpbamberger]

Did you ever figure out how to fix it? Having same problem with 5x R9 290x on windows 8.1 with catalyst 13.12 drivers. used the newest 14.xx driver but hashrate dropped about 100 kh/s.