Blackmagic eGPU & 2018 13" MBP

[lankox]

Just picked up a Blackmagic eGPU from eBay and noticed that when connected to my MBP and LG 5K UltraFine , I'm only getting 60w of power delivery instead of 85w. I'm using a Nekteck Active Thunderbolt 3 (40Gbps) Cable 100W and the cable that shipped with the LG. Any ideas? Thanks!

 

[whoisyourdaddy]

Just picked up a Blackmagic eGPU from eBay and noticed that when connected to my MBP and LG 5K UltraFine , I'm only getting 60w of power delivery instead of 85w. I'm using a Nekteck Active Thunderbolt 3 (40Gbps) Cable 100W and the cable that shipped with the LG. Any ideas? Thanks!

The ‘18 13” MBP charging circuit has a maximum power consumption of 60W. A load in an electrical circuit is not going to draw more voltage and current than what it is designed to use.

Power (W) = Voltage (V) x Current (A)

 

[lankox]

The ‘18 13” MBP charging circuit has a maximum power consumption of 60W. A load in an electrical circuit is not going to draw more voltage and current than what it is designed to use.

Power (W) = Voltage (V) x Current (A)

Thanks for the reply. When I had the MBP connected directly to the LG, system report showed 85w. I thought if you use a 15" charger, the 13" would charge at a faster rate?

 

[whoisyourdaddy]

Thanks for the reply. When I had the MBP connected directly to the LG, system report showed 85w. I thought if you use a 15" charger, the 13" would charge at a faster rate?

The idea of “Fast Charging” that’s being used for particular products which advertise this are still not going to exceed their designed charging circuit power draw. I can’t attest to what you saw but that MBP wasn’t drawing more than 60W. Do you have a screenshot? You could do a little research on device power requirements which is directly affected by voltage and current.