Intel Motherboards - Help with installing more than 9 GPU's on an ASROC

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Help with installing more than 9 GPU's on an ASROC

Printed From: ASRock.com
Category: Technical Support
Forum Name: Intel Motherboards
Forum Description: Question about ASRock Intel Motherboards
URL: https://forum.asrock.com/forum_posts.asp?TID=7117
Printed Date: 02 Aug 2025 at 1:41am
Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com

Topic: Help with installing more than 9 GPU's on an ASROC

Posted By: Smeeter
Subject: Help with installing more than 9 GPU's on an ASROC
Date Posted: 30 Dec 2017 at 2:38pm

" rel="nofollow - I have a 13 slot H110 Pro BTC+ mother board that has been operating fine for the past couple weeks with 8 GPU's installed on it.

I had intended to install 5 more GPU's on the motherboard but when I go from 8 GPU's to 9 and up; the hashing power on the additional card is halved and the system becomes very unstable. In cases where there were multiple cards above 8 installed, ethos would eventually freeze.

Has anyone had this issue in the past or know what my problem could be? The rig runs without issue at 8 cards but becomes completely unstable afterwards.

Let me know if any other info is needed.

My setup is as follows:

13 - MSI Radeaon RX580 Armor 8G OC (Biosed and running around 27 hash)

ASROCK H110 Pro BTC+ (13 PCI Express Slots)

Running Ethos Version 1.2.7 (Mining Ethereum)

3 - Power supply's with AUX paralleling cables, all Thermaltake Toughpower Gold(2 X 1200W and 1 X 850w)

8GB Ram

PCI-E Powered Riser Adapter Card (16x to 1x Powered Riser Adapter Card / MOLEX to SATA Power Cable - GPU Riser Adapter)

The mother board is all being power off the 850W PSU with separate cables being run for the main ATXPWR1, ATX12V1, PCIE_PWR1, PCIE_PWR2 and SATA_POW1.

I have installed plastic isolators between the PCI riser cables to stop from shorting out and i have checked all the PCI slots and they function correctly just not when installing more than 8 GPU's.

Replies:

Posted By: GutBucket
Date Posted: 30 Dec 2017 at 8:34pm

I read somewhere else that this mobo only supports 8 GPUs of the same type with a Windows OS. You need to use Linux to get all 13 identical GPUs up or have 5 GPU of a different flavour. ie 5 AMD and 8 Nvidia