[SUCCESS] 7 GPU Mining with Asrock H81 Pro BTC + PCIe Switch/Hub

[bursta]

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 

[1715229138]

1715229138

[1715229138]

1715229138

[1715229138]

1715229138

[1715229138]

1715229138

[uat88]

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]

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]

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?

[ggilbert13]

I have had mostly unsuccessful results with ASRock H81 Pro BTC R2.0.  Four motherboards purchased. One won't read memory slot 1. One won't read PCI power connector.  One won't read any PCI slot.  The best of the four I can get five of six (ASUS P106) cards working.  I am still in the process of swapping out H81's and am pretty tired of the process.  Purchased 12 cards and would like to run twelve cards. 

I love the sturdiness of the rigs you have.  A major difference in our rigs that reduces heat.  Willing to talk.  Can't seem to post properly here.

[ggilbert13]

Still having an issue getting H81 Pro BTC R2.0 to accept more than 5 ASUS P106 cards to run.  I do run my cards at a 45 degree angle to help with cooling. Can't add pic.

[b0nefish]

@ggilbert13
this board was de facto standard for mining till mid-2017, until better boards started to appear that accepts 8-9-13 or more gpus.
you can see it in genesis mining videos, and few other large scale mining facilities.

therefor, I would dare to guess that you may have a problem somewhere else. with riser, riser cabels, psu, os setup or even the cards itself.

of course, it may be that it just doesn't love your own mining cards, but to have several MBOs that are "broken" points me that problem IS somewhere else.

[Kartel]

Hiya fellow miners, coming to you because i experienced a difficulty. Have already 6 gpu 1070 GTX running smoothly on win10, on my MB there is only 6 slots pcie (Asrock H81 pro btc R.20). Have bought an expansion hib riser, this one https://www.amazon.fr/gp/product/B0756HM18N/ref=oh_aui_detailpage_o03_s00?ie=UTF8&psc=1  to install 7 gpu.

So i installed it, plugged one riser on it (one of the 6 already working not the new one) and nothing happen, have now 5 gpu recognized on my win10. Look like this expansion doesnt working or there is something i have to change on bios?

Already have gen1 tryed with gen2 same thing. Tryed to plug the expansion on another pcie slot, nothing happen. Have already check all forums, and didnt see any tips for this kind of problem. If someone have the solution or an idea, i'll take it !

thx

[navz]

Same here. I am running 6 sapphire nitro rx580s on asrock h81 pro btc 2.0 in windows 10. After installing the hub and 7th gpu, system recognized the 7th gpu, but after starting the batch file, the miner shows 0 mh/s for either the 7th or 6th card. (Using the beta mining driver)

Any suggestions please?

[phrostb]

anyone tried the beta bios? really hoping to do 8x gtx 1060.. gonna try tomorrow

http://www.asrock.com/mb/Intel/H81%20Pro%20BTC%20R2.0/#BIOS

[dganm]

Hi, I have arround two days trying the beta bios and appears to be running stable. I used a 1 to 3 hub adapter from Parallel Miner (https://www.parallelminer.com/product/usb-3-0-pcie-riser-card-expansion) on pcie 6 (the last one on the motherboard) with two r9 380 connected. In the pcie5 I have connected a nvidia gtx 1060. When I connected the nvidia combined with a r9 380 on the hub I had problems but I'm not sure if it was because I used two different card types on the hub adapter (it should not be a problem) or because a failing riser I found on the go it was causing trouble.

Don't forget to enable 4g decoding option. I also disabled the motherboard gpu and its hd audio device on the bios.

I'm going to continue testing it and will update this post if needed.

[xxxyyyzzz]

good solution, but i cant seem to get it working.

if i plug 2in 1 pcie extension bios crashes and cant eaven boot,

if i use 4 in 1 pce extension same thing. i can only remove battery to make it work again with 6 gpus..

anyome have step by step. please provide.


i have nvidia cards, if this helpes. no amd as in this post.