BBT Episode 7: 6 GPU Mining Rig with ASRock H81 PRO BTC

[spiffcow]

May have found a work around...  Plugged a monitor in to a 290 HDMI port in order to boot.  The moment I saw the ASROCK bios logo pop up, I unplugged the HDMI cable.  RDC worked after that, and I've got all 6 290's working great at solid has rates (just under 900khs/ea).  In the past if I've yanked the cable the card it was on would loose hash rate after and eventually go kaput.  But pulling it before I'm in the BAMT OS seems to have worked.

The real question will be when I restart the rig again...will everything be happy?  Doubting it but will report back later when I do.  For now want to see if this rig stays stable at 5300+ kh/s headless.

I'm doing the same thing..  Really annoying that this is a MB specifically designed for mining, yet doesn't support headless operation on 290s.

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[Antspaar]

Hi guys and sorry for waking an old thread.

My concern is: Am I good with one 1200w platinum ATX for: Asrock H81 pro BTC, Intel pentinum G3258, 6x MSI RX 580 8GB, 8gb DDR3 ram and 120gb SSD?
or... Should I buy a seperate ATX something like 450w for PSU and 1200w for GPUs?
Also, are powered riser cables neccesary for Asrock H81 with these videocards? I've heard Asroch H81 doesn't need a powered ones.

Thank you guys!!

[Vann]

Hi guys and sorry for waking an old thread.

My concern is: Am I good with one 1200w platinum ATX for: Asrock H81 pro BTC, Intel pentinum G3258, 6x MSI RX 580 8GB, 8gb DDR3 ram and 120gb SSD?
or... Should I buy a seperate ATX something like 450w for PSU and 1200w for GPUs?
Also, are powered riser cables neccesary for Asrock H81 with these videocards? I've heard Asroch H81 doesn't need a powered ones.

Thank you guys!!

Yes, a 1200W Platinum is sufficient. You are looking at somewhere around 800W - 1000W depending if you dual mine and undervolt the cards. It's always best to run a single PSU that can handle the draw at around 80% of the rated power for best efficiency if it has enough VGA connectors to use up to two per strand max and preferably one. Using dual PSU's is a cost savings measure on larger rigs since single high output ATX PSU's are very expensive. The PCI-E v3.0 specification allows more power to be delivered though the PCI-E slot. Newer cards draw more power from the slot than older cards and the wires on unpowered ribbon risers are too thin to be used under constant load safely. I would go with 6-pin 1x PCI-E USB powered risers.