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Author Topic: [SUCCESS] 7 GPU Mining with Asrock H81 Pro BTC + PCIe Switch/Hub  (Read 24985 times)
tuchubby
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October 06, 2017, 07:46:20 PM
 #61

Has anyone tried using a pci-e hub in slot 2 (x16) and using 8 GPU?  All I've seen on this thread is pci-e hub on slot 6 (x1).  I don't think it would matter because they're all connected on x1 lane, but who knows??  I want to run 8 not 7 but need some ppl out there to make sure

also, which mobo do you all have:
h81 pro btc +, or
h81 pro btc + r2.0
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bursta
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October 09, 2017, 11:11:58 AM
 #62

Hi there,
I tried putting pci-e hub in slot 2 (x16) and had no luck booting win10 with 8 GPUs.
I also tried disabling "everything" in bios so I can free some extra lanes but had no luck.
I guess it's 7GPU limit for this mobo  Sad
uat88
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October 14, 2017, 06:44:10 PM
 #63

Has anyone tried using a pci-e hub in slot 2 (x16) and using 8 GPU?  All I've seen on this thread is pci-e hub on slot 6 (x1).  I don't think it would matter because they're all connected on x1 lane, but who knows??  I want to run 8 not 7 but need some ppl out there to make sure

also, which mobo do you all have:
h81 pro btc +, or
h81 pro btc + r2.0

I have the H81 Pro BTC R2.0 and tried with this PCI-e hub but it just could not detect the 6 or 7 GPU at all.
Tried several methods but nothing seems to work. It just could not detect any GPU connected to the PCE-e hub at all.
Not sure what seems to be the problem here.

Any help would be appreciated very much.
FrankRizz07
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November 03, 2017, 05:23:32 PM
 #64

OK everybody;

I have been through the ringer trying to get more than 4 cards working with H81 pro BTC v2.0.  After a ton of back and forth with Asrock support they sent me an updated / custom BIOS that added "enable 4g encoding" option just above the Auto/Gen1/Gen2 settings in chipset.

Note that this bios does not have the pretty look and feel as the 1.2, but all the same options.  Here is the download link: http://s000.tinyupload.com/?file_id=15578659339316454721

load this file onto a bootable usb (root directory) and flash it from inside the 1.2 bios.

btw: i see a lot of posts about all these bios tweeks and what asrock said was this mb was built to load all 6 gpu's right out of the box without any tweeks. (still tweaked mine)

If this makes your day, please comment to this (so everyone knows its legit) and consider a donation:  ETH: 0x6d3853a12899dad23c9768e1d3fc00e3c98c8edb

Good luck!   -Rizzo
Valentine_13
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November 15, 2017, 12:38:20 AM
 #65

Hi,

- 7x RX 570
- H81 Pro BTC 2 + PCIe Switch/Hub (1x to 4x)
- Win 10

Just tried to install a 7th GPU.
The RIG just boot in a loop before bios.

Have to clear the CMOS to get back to 6 GPU's working.
Don't know why it will not take my 7th card.
I also tried to run the Switch alone and it's working as I can see 6 cards if I use it without the last pcie slot from the MB.
It just won't boot with 7.

:/

Any suggestion?
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