PSU Upgrade Gigabyte Aorus Gaming Box (Vega 56)  

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steve500
(@steve500)
Eminent Member
Joined: 2 months ago
Posts: 35
November 3, 2018 5:28 am  

Sharing a modification I have done to my Aorus gaming box that was originally a GTX 1070 model. It worked very well with the factory card. I sold the 1070 factory card in hopes to replace it with the Vega 56 Nano card for improving performance in editing software on my 2018 Macbook Pro with native compatibility and some gaming in Windows on the side. 

With the Vega 56 installed in the Aorus box, it wasn't all fun and games. It was seemingly working just fine at first but I noticed some extra intensive scenes in games like The Vanishing of Ethan carter were able to get it to crash. The box's internal temps were up there but nothing too alarming for a small form factor high performing device but I figured maybe the factory PSU was overheating. I removed the factory PSU, took the PSU's enclosure cover off, and rigged up two 80mm fans at 6000RPM. I was still able to get it to crash. During the crashes, I monitored voltages of the 3.3, 5, and 12 volt rails. All three rails dropped voltage output to 0v for a split second when a crash would happen. I was led to believe this is a PSU issue. 

I ordered an Athena AP-MFATX50P8. This power supply is rated 50 watts higher, it is the same 6" length dimension with the same rear panel layout, and same air ventilation layout. I was worried about how I was going to cram the extra length 24 pin harness, sata, atx, and 12v cpu power connectors in there with the extremely limited space but, miraculously it wasn't complicated at all with the help of a couple velcro straps to tidy the wad of cables up. I added some foam weather stripping to the psu air inlet similar to the factory psu setup; it seems to make an even tighter seal with the egpu housing cover than the factory psu did to pull in fresh air more confidently.



I found out quickly that the fan noise of the Athena PSU sounds like a Dyson hair dryer, yikes. I replaced the fan with a SUNON MB40201VX posted by DerDings here.

I reassembled and carefully monitored temperatures as most of us should agree that a lower CFM fan than factory supplied is a pretty terrible idea. I ran full load long and hard tests and couldn't get the egpu to crash at all, I had perfect stability. The PSU housing felt regularly warm, the Aorus Box chassis didn't get hot, no hot spots nor any scorching air coming out of the fan port. The Athena power supply also has a properly working smooth fan speed control depending on load. 

So far, I am happy with the result and made for a fun project. The Vega 56 and 500w Athena PSU is making a great combo- so much natively mac compatible GPU horsepower in a tiny package. 

I have some ultra low profile fans on the way from Silverstone to try fitting in between the PSU and egpu chassis cover at the inlet as a pusher fan, I'll update when those arrive. 

Soon I will add my system & eGPU details or a build link to this my signature to give context to my posts


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Eightarmedpet
(@eightarmedpet)
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theitsage
(@itsage)
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Posts: 3207
November 4, 2018 4:05 am  

Thank you for sharing. Great work sourcing the components and make them all fit in the Gaming Box tiny footprint! Maybe make a vertical stand to show the Blackmagic eGPU Pro who's the boss? Enjoy your portable RX Vega Nano build!  😀

Best ultrabooks for eGPU use

eGPU enclosure buying guide

86 external GPU build guides


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steve500
(@steve500)
Eminent Member
Joined: 2 months ago
Posts: 35
November 4, 2018 8:24 pm  

Thanks guys. So far it's been flawless! Pushed it hard for several hours with no issues. 

Yes, this thing is tiny and cheaper than that big ugly blagmagic egpu. Don't get me wrong, blackmagic makes great products but that eGPU of their is far over priced and goofy.

Soon I will add my system & eGPU details or a build link to this my signature to give context to my posts


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maskofwraith
(@maskofwraith)
New Member
Joined: 5 months ago
Posts: 3
November 14, 2018 7:18 am  

Hey small question, is it possible to use that old PSU for another computer build. Thanks

Soon I will add my system & eGPU details or a build link to this my signature to give context to my posts


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