by Hatsize7 » Tue Dec 25, 2018 12:21 pm
Hatsize7
Tue Dec 25, 2018 12:21 pm
Dear all,
I was about to start a new thread, but found this, so I’m posting here. I have the same intentions as OP.
Can some of you help me with the exact specs of multi GPU rigs, which are fully functional? I found an old thread, but it’s a 94 pages long, probably most of it is outdated, who knows what’s still applicable.
Is it true that I lose out on speed if i use an x1 riser card instead of directly plugging the graphic card into x16? In another thread they mentioned 20% drop in speed, but if that’s the price of the cheaper config (cheaper mobo, cpu, license, etc), I accept.
I bought a mining rig from an ex-miner, which I would like to turn into a rendering machine. It has an AsRock H110 Pro BTC+ motherboard, which has 13 PCI slots. It has two 2000W PSU, so power is not a problem.
Is it true that the CPU lanes could cause a problem/limit of how many cards I can run?
I read that for a period of time there was a limitation of max 8 GPUs running on Windows 10, but it has been lifted since. Is there a chance to run an Octane slave on Linux? I prefer Windows, but if it better to use Linux, I wouldn’t mind.
The master would be Win 10.
So can some of you give info for example in this format:
4 GPU rig
Motherboard:
CPU:
Graphic cards:
8 GPU rig
motherboard:
CPU
Riser/splitter etc
Graphic cards:
11+ GPU rig
Mobo:
CPU:
Etc
I don’t want to hack the cards with cutting, changing the cooler system to fit into single slots etc. Just simply buy, build, run.
I see there is also an ASUS motherboard with 19 pcie slots, is that a viable option?
This would be great help, from here I could determine costs and figure out the best benchscore/dollar ratio
It would be nice if Tutor or smicha would be able to comment.
Thank you and Merry Christmas to you all!
edit:
Let me post this setup which works:
12 GPU rig (for me it's 7 GTX1080 (older) & 5 GTX1070Ti (newer))
motherboard: ASRock H110 Pro BTC+
CPU: Intel Core i5 7400
PSU: 2x Senlifang 2000W 95+ Gold split with Thermaltake dual 24pin adapter cable
32Gb ram
12x GTX1080&1070ti with PCI-E 1x to 16x riser cards
SSD with Windows 10 Pro
Octanebench score is around 1770.
(at the time of writing I'm only having some issues with CUDA error 2 (out of memory) on heavy scenes on th 4.01.1 version - waiting for a fix ATM)
edit2:
It seems like you need to set the Windows Virtual Memory to 100Gb which fixes the Cuda error problem.
Win 10Pro / C4D R23.008 / Octane 20.1.5-R4 / Nvidia driver 456.38
Intel Core i7 9800X / 96gb / RTX3090