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Mantiz Venus PSU swap - GPU not turning on
 

Mantiz Venus PSU swap - GPU not turning on  

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ggabriele3
(@ggabriele3)
Active Member
Joined: 11 months ago
 

I just tried upgrading the PSU in my Mantiz Venus, as an experiment with the Vega 64. I swapped out the stock PSU for a Silverstone SX700-LPT that I had already (SFX-L form factor, modular, etc). It's larger than the stock but went in just fine. Using it with a 2018 Mac Mini, in Boot Camp and MacOS.

After connecting, the GPU does not seem to turn on, and is not detected in MacOS or Win10. 
The SSD I have mounted in the Mantiz Venus is detected by the OS, though.

What could be wrong here?

Pending: Add my system information and expected eGPU configuration to my signature to give context to my posts


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mac_editor
(@mac_editor)
Noble Member Moderator
Joined: 3 years ago
 

@ggabriele3

Power cables not completely plugged in to the GPU is a possibility - but usually this would cause shorting and safely shut down the enclosure (for Corsair PSUs, you would hear a click when something like this happens). Reseat the GPU. What Vega 64 is this? Finally, try the old PSU to ensure that at least the previous-working configuration is still functional. If not, there may be some damage to the board/PCIe slot for GPU.

This post was modified 1 month ago

purge-wrangler.shpurge-nvda.shset-eGPU.shautomate-eGPU EFI Installer
2018 MacBook Pro 15" RP560X + RX 5700 XT (Mantiz Venus)


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ggabriele3
(@ggabriele3)
Active Member
Joined: 11 months ago
 

@mac_editor

Well, I put the original PSU back in and it worked OK.
I know the new PSU works, though - it boots on the old system i took it from.

Could it be that the PSU isn't compatible with the eGPU in some way?

Pending: Add my system information and expected eGPU configuration to my signature to give context to my posts


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mac_editor
(@mac_editor)
Noble Member Moderator
Joined: 3 years ago
 

@ggabriele3

Very surprising. All I can guess is that when you changed PSUs last time maybe some connection was lose. Only option is to try again :p sorry for not being helpful. 

purge-wrangler.shpurge-nvda.shset-eGPU.shautomate-eGPU EFI Installer
2018 MacBook Pro 15" RP560X + RX 5700 XT (Mantiz Venus)


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ggabriele3
(@ggabriele3)
Active Member
Joined: 11 months ago
 

@mac_editor

Well, I rebuilt it again with the new PSU, and it’s working. I have no idea what could have been wrong last time - all the connections were in place. 

Well, here’s hoping it stays this way. 700W should be enough to keep the Vega64 happy. 

Pending: Add my system information and expected eGPU configuration to my signature to give context to my posts


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teltersat2
(@teltersat2)
Eminent Member
Joined: 2 months ago
 
Posted by: @ggabriele3

@mac_editor

Well, I rebuilt it again with the new PSU, and it’s working. I have no idea what could have been wrong last time - all the connections were in place. 

Well, here’s hoping it stays this way. 700W should be enough to keep the Vega64 happy. 

Same thing happened to me - I have the same enclosure, power supply and video card!. What I found out is that the cables in the Silverstone PSU are a bit too big to fit properly in the Mantiz sockets. First time I did not get it to boot properly, reseated everything and bam, it worked the second time around. Unless you plan to toss your eGPU around, it should stay put!

Current build: 2017 15" MacBook Pro + Mantiz Venus MZ-02 + Silverstone SX700-LPT (750W Peak) + Sapphire Radeon RX Vega 64 (Reference model)
Replaced parts: Sapphire Radeon RX 580 Nitro+


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