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Topic: Problems with ASROCK H81 Pro BTC w/ 4x Sapphire R9 290 Tri-x's (Read 2508 times)

member
Activity: 120
Merit: 10
I have 2 other 4X GPU rigs.  I am not a newbie... there was something very wrong with that board.

I blame the board very much....

OK then, send it back.  You asked.....
newbie
Activity: 38
Merit: 0
I have been googling problem obvisouly ... I am found a couple of places where people have the same problems and  could not fix them and this Moherboard is basically Crap ... Can someone confirm this so I can return this product ASAP

Don't blame the board.  I am running two of those ASROCK boards, each with four Sapphire R9 270x GPU's without issue. The 270's have dual PCI-E power connectors on the back however.  

I agree with the powered risers.  Sounds like a power issue to me.

Added:  None of my cards are in the slots, all but the 4th card (in each rig) using powered risers.

I have 2 other 4X GPU rigs.  I am not a newbie... there was something very wrong with that board.

I blame the board very much.... I troubleshooted it for 3 days 10 hours a day for a total of 30 hours .... I have a plethora of Powered and unpowered risers.. tried everything you could think of.  It does not like R9 290's

The r9 290's also have 8pin + 6pin power connectors, nevertheless they still need 75Watts each from MOBO or powered riser .. but this MOBO was supposed to eliminate the use of Powered riser with the extra power coming from the 2X molex connectors on board supplying the PCI-E slots with that power directly.

I have found numerous posts that this board is crap anyways. One guy bought 10 of them and had to RMA 4 of them .. I probably can't RMA mine since I bent the pins in the CPU slot thingy ... Does anyone know, it was comletely my fault by trying to put the protector on before bringin gto the store for a refund. anyways venting a bit here.

Cheers,

member
Activity: 120
Merit: 10
I have been googling problem obvisouly ... I am found a couple of places where people have the same problems and  could not fix them and this Moherboard is basically Crap ... Can someone confirm this so I can return this product ASAP

Don't blame the board.  I am running two of those ASROCK boards, each with four Sapphire R9 270x GPU's without issue. The 270's have dual PCI-E power connectors on the back however.  

I agree with the powered risers.  Sounds like a power issue to me.

Added:  None of my cards are in the slots, all but the 4th card (in each rig) using powered risers.
hero member
Activity: 513
Merit: 500
Crypto ehalvers
Took my a while, and a lot of trouble shooting. But I had no problems getting 4 detected. The 5th card however, that was the tricky one for me.

I have a 650w PSU powering the mobo/cpu and two undervolted 7950's I have a 1200w PSU powering a 7950, 270x, and 280x.

All of these are on SATA powered USB risers. And I do not have the molex connectors on the motherboard.

My first suggestion would be to try to try the same setup with powered risers.

I'm sure when I try to get the 6th card on it is going to be a nightmare  Undecided

EDIT: Also something I noticed when trying to get the cards going. My first attempt with 5 cards I had one card directly into the x16 slot (no riser) and the Mobo didn't seem to like that the x1 slot covered by the Video card in x16 wasn't filled. Maybe there is some kind of presence requirement for the Mobo to recognize certain slots.....
IDK I am just spitballing here lol

GL bud
newbie
Activity: 38
Merit: 0
I have been googling problem obvisouly ... I am found a couple of places where people have the same problems and  could not fix them and this Moherboard is basically Crap ... Can someone confirm this so I can return this product ASAP
newbie
Activity: 38
Merit: 0
Hi,

I just got this ASROCK motherboard after 1 month of wait as it was on backorder was very excited as i had read good things about it, but it is failing me.

ASROCK H81 Pro BTC motherboard
4 X sapphire TRI-X
4X unpowered risers ( as the board supplies extra power to MOBO with the molex connectors)
windows 8.1
SSD HD 120GB
4X SAPPHIRES r9 290 tri-x
12GB of ram
intel core i7-4770 CPU


I am losing my mind with this MOBO !

It does not work as advertised for me, has someone had these issues ?

I can only get 2 cards to work at best ! ... and sometimes even thats screws up

1st PSU#1 (800W) connect to all MOBO connectors including 2X molex and 1 X GPU Directly in 16X slot (no riser)

2nd GPU on 1050W PSU#2 (unpowered 1x to 16x riser in 1x slot closest to CPU) works sometimes but mostly not recognized or has exclamation mark

3rd GPU on PSU#2, when by miracle windows recognises the 2nd GPU and I can hash with both I try and add third (tried in all other available 1X slots with 1X to 16 X unpowered riser. screen just stays black after black and white windows logo...

I havent event gotten to try a 4th GPU ...

Someone please help I have been at it for 3 days and I am losing my mind!!!
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