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Sonnet eGFX Breakaway Box: Power Supply Upgrade (Guide)

Sonnet eGFX Breakaway Box: Power Supply Upgrade (Guide)  


Active Member
Joined: 6 months ago

I’ve documented the process of upgrading a Sonnet eGFX Breakway Box from 350W to 550W. 

Enermax SFX Power Supplies have been shown to work well (without upstream power delivery to your Macbook over TB3):

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

Prominent Member
Joined: 2 years ago

Nice video. Changing the power supply removes upstream power delivery? Or do you mean your MacBook Pro doesn't get power delivery because it's an older MacBook Pro with Thunderbolt 2?

I wonder, can a Thunderbolt 3 eGPU box with power delivery provide Power Delivery to a USB-C only MacBook? The MacBook can't use a Thunderbolt eGPU but it might be able to get power from one (Thunderbolt uses the USB-C Power Delivery spec).

Mac mini (2018), Mac Pro (Early 2008), MacBook Pro (Retina, 15-inch, Mid 2015), GA-Z170X-Gaming 7, Sapphire Pulse Radeon RX 580 8GB GDDR5, Sonnet Echo Express III-D, Trebleet Thunderbolt 3 to NVMe M.2 case