Gigabyte WRX80 Motherboard and GB TR TB3 AIC difficulties
 
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Gigabyte WRX80 Motherboard and GB TR TB3 AIC difficulties  

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DrEGPU
(@dregpu)
Estimable Member
Joined: 3 years ago
 

Got TB3 working! Sort of! It turns out, my TB3 AIC was faulty. After getting another, this one works in slot 2 (ie, the lone 8x slot) with only my single slot AMD GPU in slot 1. I have my 3090's water blocked together with a terminal, so it isn't so easy moving those around. I'll see if I can suss out whether or not the TB3 can be in any slot, like the BIOS suggests. I'm a little afraid it will only work well in slot 2. These types of boards don't let you control everything through the BIOS. You need the BMC/IPMI for more settings and functionality, like updating the BIOS (which I haven't done). 

I will say that this board is SUPER finicky! Basically anytime you change anything, there's a high chance you need to reset the CMOS, including removing the battery and waiting several minutes to clear out the BMC/IPMI, which I can't seem to get to work anyway. 

Edit: I managed to move the TB3 AIC to slot 3 (16x lanes) and it still recognizes my TB3 SSD (TekQ, if interested). Now it's time to try and get the 3090's working too. Sigh...

Edit 2: This board is so weird. It can handle 2x GPU's and the TB3 AIC, but not 3x GPU's and the TB3 AIC. It can also handle 3 GPU's (with some prodding), but not with the TB3 AIC. I've only tried the TekQ external NVME. I'll try an eGPU tomorrow or the next day. 

 

This post was modified 1 week ago
2019 Mac Pro (RP580X) [10th,16C,W] + RTX 3090 @ 32Gbps-TB3 (Razer Core X) + Win10 20H2 [build link]  

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DrEGPU
(@dregpu)
Estimable Member
Joined: 3 years ago
 

Partial success! The TB3 AIC does in fact recognize and enables 2x eGPU's (on each TB3 port)! I plugged in 2 aorus gaming boxes; 1 is a 3090 and the other is a 2070. The other 3090's are on the motherboard, presumably enjoying all 16x PCIe 4.0 lanes. Not sure why the Thunderbolt control center says there are 2 Gigabyte AGB's on port 2, but whatever!

egpu dm
tb3 tool

 

Edit: A warm reboot into Ubuntu linux (21.04) does not "activate" the eGPU's. They are recognized and enumerated as peripherals per boltctl, but GPU's inside them are not recognized ("lscpi -i VGA" does not list the GPU's in the eGPUs. 

This post was modified 3 days ago
2019 Mac Pro (RP580X) [10th,16C,W] + RTX 3090 @ 32Gbps-TB3 (Razer Core X) + Win10 20H2 [build link]  

itsage liked
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itsage
(@itsage)
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Joined: 5 years ago
 

@dregpu, Nice work getting two eGPUs going! How's the hashrate on this setup 😀 ? The 2nd generation Gaming Box has two Thunderbolt controllers so both show up in Thunderbolt Control Center.

 

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2018 Mac Mini [8th,4C,B] + RX Vega 56 Nano @ 32Gbps-TB3 (Gigabyte Gaming Box) + macOS 12.0 & Win11 [build link]  


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DrEGPU
(@dregpu)
Estimable Member
Joined: 3 years ago
 

@itsage Thanks! 2 controllers, that makes sense! I was able to get around 95MH/s on the 3090 and 30MH/s on the 2070. I still can't get all my GPU's plus TB3 working at the same time. Gigabyte support has not been too helpful. I already tried all their suggestions (above 4G of course, secureboot on or off doesn't matter). So frustrating!

2019 Mac Pro (RP580X) [10th,16C,W] + RTX 3090 @ 32Gbps-TB3 (Razer Core X) + Win10 20H2 [build link]  

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