Asrock H81 BTC Pro Board and Sapphire Tri-X 290s - page 2.

Street Jammer

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Quote from: humorme201 on January 21, 2014, 02:52:26 PM

Quote from: Street Jammer on January 21, 2014, 02:10:16 PM

Corsair 1200i is enough for 4 Sapphire Dual-X R9 280x cards , use windows 8.1

if you were to add one more card i recommended 1600w psu

If you are going to build a new rig go for sapphire R9 290x tri oc ,

Thank you so very much for your input. Much appreciated. For the new rig, same psu for 4 sapphire R9 290x?

If you are going with 4X 290x , 1600w is enough each card pulls around 300 - 360w

humorme201

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Quote from: Street Jammer on January 21, 2014, 02:10:16 PM

Corsair 1200i is enough for 4 Sapphire Dual-X R9 280x cards , use windows 8.1

if you were to add one more card i recommended 1600w psu

If you are going to build a new rig go for sapphire R9 290x tri oc ,

Thank you so very much for your input. Much appreciated. For the new rig, same psu for 4 sapphire R9 290x?

Street Jammer

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Activity: 251

Merit: 250

Corsair 1200i is enough for 4 Sapphire Dual-X R9 280x cards , use windows 8.1

if you were to add one more card i recommended 1600w psu

If you are going to build a new rig go for sapphire R9 290x tri oc ,

humorme201

newbie

Activity: 26

Merit: 0

Okay, I have 4 Sapphire Dual-X R9 280x cards and just purchased the ASROCK H81 PRO BTC. Also have 1 PSU Corsair 1200i. Do i need another PSU for this rig? Should I use Windows 8.1? Comments and suggestions? Should I add one more R9 280x to this setup? Also, if I were to build another rig, should I go for 4x R9 290x? What brands would you recommend folks?

thank you...the information above is very helpful!

dsy

Street Jammer

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same for both cards , im not sure about sdk

novymivo

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Quote from: Street Jammer on January 17, 2014, 02:51:55 PM

try 12.6 drivers , some people got it working

windows 7 supports max 8 GPU cores.

Since r290x card has as 2 GPU cores each

Only 4 X R290xcards works with windows

With Linux you can have 5 cards easy

i will try but do i need sdk as well or not ?

i got r9 280 x not 290x so ?

Street Jammer

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try 12.6 drivers , some people got it working

windows 7 supports max 8 GPU cores.

Since r290x card has as 2 GPU cores each

Only 4 X R290xcards works with windows

With Linux you can have 5 cards easy

novymivo

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Quote from: Street Jammer on January 17, 2014, 02:26:16 PM

try debian or Xubuntu

no thanks

i need win 7
c'mon you know how to do it please

Street Jammer

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try debian or Xubuntu

novymivo

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hi all. i want use 5gpu=s r9 280x
I got win 7 64bit but last card got error code 43.
4 cards works perfect
the same mb ashrock 81.
all gpu-s are fine , all risers as well.
what to do ?
sdk is necessary or maybe drivers I used 13.06 beta.
Please help or pm tip will be given.

Street Jammer

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Do NOT use powered riser cables. This board provides additional power to all slots, if you run power from PSU1 to the Motherboard, then power from PSU2 to the riser, it will short through the PCI-E slot between supplies. Some have reported melted riser cables.

We have many of these boards with 6x R9 280X's and dual 1200W supplies. The only issue we have currently is AMD driver not allowing more than 5 cards to be enabled at a time.

If anyone knows a work around for this please help. We've tried Win7, Windows Embedded 8 Standard, Windows 8.1, Xubuntu. I've read suggestions of Catalyst 12.6 and 13.1 allowing more than 5 cards, however the R9 280X will not work properly and isn't supported back in 13.1

To clarify... Connect PSU 1 to All motherboard connections, depending on size, run GPU 1 and 2 from it's PCI-E connectors.

Connect PSU 2 ONLY to PCI-E 8+6 pin connectors on GPU 3 and 4, and PSU 3 ONLY to PCI-E 8+6 on GPU 5 and 6

Do NOT use powered risers.

Out set up has, PSU1 runs all motherboard connections + GPU 1,2,3. PSU2 runs GPU 4,5,6.
We've modified 2 ATX 24 pins extension cables into a connecting the Green and Black 'power on' wire between supplies so PSU1 and PSU2 both are on or off at same time as motherboard.

zmhaha

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I am hunting for this board too. Not sure if it can power 6x 290x. I heard people saying they should use powered risers but some said don't because it will short something and do some damage.

For your case, I am sure your PSU is not give you enough to power 3x 290 and all the rest of the stuff.
Also, do not crossfire for mining. You have to manually disable it.

bitcenturion

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Having an issue with the Asrock BTC Pro board recognizing all 3 of my Sapphire Tri-x 290's. Windows 7 64-bit - It sees 2 of the cards (all 3 on risers in 1x PCIE slots) but can't get it to see the third for the life of me. Confirmed the 3rd card works as I swapped it with the 2nd card to ensure it CAN be seen, which it can, just not 3 all at once. I am running two 850w corsair PSUs together for the board (with the an adapter to combine them)

Any ideas? Does the presence pin on the 3rd PCI 1x slot need to be shorted?

You'd think that the board DESIGNED for running risers as a rig for mining would support all cards out of the box.

Topic: Asrock H81 BTC Pro Board and Sapphire Tri-X 290s - page 2. (Read 23728 times)