7x PCIe Mainboards that work with 7 video cards

[Bare]

Z87-G55 confirmed to work with 7x R9 290 (using modded driver from https://litecointalk.org/index.php?topic=11761.0) with Windows 8.1:



Getting some blackscreens sometimes though, either when shutting down, booting up or closing the miner. Can't figure out why yet.

look at your temps...no wonder you're getting blackscreens...

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[milospinkfloyd]

got problem with H270 Plus, I put 7 cards, 6xPCIe and 1xM.2, everything works fine until I turn on machine via AC power loss option, than windows recognizes only 6 cards. Reset win doesnt help..When I turn on board via Power switch everything is fine, 7 cards are shown but on AC power loss (power on) there are only 6, any idea?

[amedeusx]

MSI Z87-G55  - not working with x1 risers in the x16 slots! Hot plug doesn't help me, but some peoples says it is

try modify pcie gen in bios
and disable everything that is not needed in bios as well

The best one I used was the MSI Z77A-GD55. It is much cheaper than the MSI Z77A-GD65  You need lbr mod to make it work.

so, is this mb( MSI Z77A-GD55) supports 7 GPU for mining ,because in another post someone says that it can support only 6 gpus?

[Robbedush]

Hi Guys,

I was wondering if anyone actually got a MSI Z87-G55 working with 7 GPU`s? If i connect 6x cards everything is great, but when adding the 7th card i only get a screen with all weird colored artifacts (see picture). I also checked the risers and changed every BIOS setting i could find but sadly no joy :-( . Very curious if someone succeeded because it seems some say it should work and others say it can`t.

https://imgur.com/a/jNug1

[bubaba]

Hi Guys,

I was wondering if anyone actually got a MSI Z87-G55 working with 7 GPU`s? If i connect 6x cards everything is great, but when adding the 7th card i only get a screen with all weird colored artifacts (see picture). I also checked the risers and changed every BIOS setting i could find but sadly no joy :-( . Very curious if someone succeeded because it seems some say it should work and others say it can`t.

artifacts mostly because of less virtual mem or not using igpu or dongle or maybe reduce intensity???

[Robbedush]

The artifacts come before any bios or windows screen. It's directly before boot up.

7th card plugged in > Artifacts before BIOS POST

7th card disconnected > Boots perfectly and without any errors and mines days after days.

[bubaba]

did u you change ur 7th card with one of the six running atm to see if maybe the 7th card is the problem?

Otherwise i would try to ask the support of MSI...