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External PSU for the Razer Core V2  

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lefuturdelavenir
(@lefuturdelavenir)
Trusted Member
Joined: 3 years ago
 

I've build a custom cable that fits the original power connector and allows to use a standard ATX power supply instead of the noisy fATX.

I'm using an old Dell power supply for now in order to validate this solution. So far it's working perfectly.

I'm looking for a modular PSU for a more permanent and better looking solution. I think I will also add a power switch that force the PSU off when I am not using it, even when my MacBook is plugged.

egpu03

MacBook Pro 2017 no-touchbar; Razer Core V2; RX 570


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itsage
(@itsage)
Illustrious Member Admin
Joined: 4 years ago
 

This is a cool idea. Is there an extension cable long enough to locate the PSU under the desk for example?

external graphics card builds
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2020 15" HP Spectre X360 [11th,4C,G] + RTX 2080 Ti @ 32Gbps-TB4 (AORUS Gaming Box) + Win10 2004 [build link]  


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lefuturdelavenir
(@lefuturdelavenir)
Trusted Member
Joined: 3 years ago
 

I'm working on it.
I planned to build a extension cable using the same method I used to build the adapter: by joining multiple wire into a brained sleeve. Turns out the 18 wires, when grouped together, are quite stiff and not easy to manipulate. So I'v looked for another solution.
I'm building a cable that only transport 12v to the Razer Core from a standard EPS-12v connector plugged into an ATX modular power supply. The challenge is to convert the 12V to 5V and 3.3V inside the box.
I'll post my progress if I don't burn my apartment to the ground during the process  😎

MacBook Pro 2017 no-touchbar; Razer Core V2; RX 570


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damonhayhow
(@damonhayhow)
Eminent Member
Joined: 4 years ago
 

have you or anyone found a higher wattage PSU that will fit in the core v2?

2018 15" Macbook Pro I7 2.6 Ghz / 16Gb / 512 Gb / 560X. 2x LG Ultrafine 4K displays. Razer Core V2 eGPU, Radeon RX580, Sunnix UPD2018 Displayport adapter.


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lefuturdelavenir
(@lefuturdelavenir)
Trusted Member
Joined: 3 years ago
 

Personally I have not. I've look into the fATX format and found some power supply made for rack servers. Those can be very powerful but they are very noisy. Definitely not designed to be used in a silent configuration.
I've make a try with this power supply that I've found and modify to integrate a 92mm fan on the side. Placed near my rx570 small form factor it was a perfect fit. Just before the final assembly I've check the voltage just to realise the PSU was somehow dead from the start. That was a great waste of time and now I know I have to check this BEFORE working on it. Anyway, it can give some idea to someone.

egpu02
egpu01

MacBook Pro 2017 no-touchbar; Razer Core V2; RX 570


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damonhayhow
(@damonhayhow)
Eminent Member
Joined: 4 years ago
 

I am not so fussed about the silent configuration, myself. I need to feed a smidge more power to the graphics card? Is there any chance the 65W of power dedicated to charging the host computer could be rerouted to the graphics card? Or is it integrated too tightly into the TB3 controller?

2018 15" Macbook Pro I7 2.6 Ghz / 16Gb / 512 Gb / 560X. 2x LG Ultrafine 4K displays. Razer Core V2 eGPU, Radeon RX580, Sunnix UPD2018 Displayport adapter.


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lefuturdelavenir
(@lefuturdelavenir)
Trusted Member
Joined: 3 years ago
 

The charging power is not dedicated. If you don't use the charging capability you can theoretically use this power for the GPU.
Almost all the power comes from the single 12V rail from the PSU. Based on the indications fond on the PSU side, this rail is 41A capable so 492W. I suppose that if you don't use the charging capability or any usb port or ethernet you could push the GPU to 400w, maybe 450w. I would not recommend it thought. 
If you want to go further you can use a standard external ATX power supply (mine is 750w). But you will have to build the cable.

MacBook Pro 2017 no-touchbar; Razer Core V2; RX 570


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Eightarmedpet
(@eightarmedpet)
Noble Member Moderator
Joined: 4 years ago
 

@lefuturdelavenir love this mod! I have no idea where to start with most electronic stuff - especially cables. If I asked super nice and paid would you consider really nice would you consider making another?

2017 13" MacBook Pro Touch Bar
GTX1060 + AKiTiO Thunder3 + Win10
GTX1070 + Sonnet Breakaway Box + Win10
GTX1070 + Razer Core V1 + Win10
Vega 56 + Razer Core V1 + macOS + Win10
Vega 56 + Mantiz Venus + macOS + W10

---

LG 5K Ultrafine flickering issue fix

 
2017 13" MacBook Pro [7th,2C,U] + RX 5700 XT @ 32Gbps-TB3 (Mantiz Venus) + macOS 10.15.4 & Win10 2004 [build link]  


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marpid
(@marpid)
Active Member
Joined: 4 years ago
 

I know this post is from a while ago, but I intend to do a similar mod. Would you mind sharing the definition of the 10 pin connector on the main board? I’d like to know which cable is which before I start (e.g. 12V, 3.3V, etc). If you could kindly share this information, that would be awesome. Thanks in advance.

To do: Create my signature with system and expected eGPU configuration information to give context to my posts. I have no builds.

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Rvrd90
(@rvrd90)
New Member
Joined: 2 years ago
 

I second the motion to sharing the 10 pin connector diagram.  My Core V2 PSU failed.  Searching for a compatible Flex ATX PSU has been futile.  TIA.

2018 MacBook Pro, Core I9 32GB, Akitio Node Pro w/ PowerColor Red Devil RX580


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