Choosing the right PSU for MBP 2020 16"
I've purchased myself an Enermax Revolution 650W. My eGPU is a Mantiz Venus. I've swapped the PSU's and immediately on heavy load usage, the PSU short-circuited. This was used on my MBP 2016 version. I sent this PSU back to get a new one as I thought it was faulty. I received a new one, but never opened it because I didn't get around to do it.
After some years pass by, I now own a MBP 2020 16". This laptop uses a lot more power than the MBP 2016. The standard 550W charger doesn't suffice, so I need to get a better one. I remembered I still have my Enermax 650W, so I swapped it again and again at the first usage of heavier load, the PSU short-circuited. I've read around that this PSU is usable for the Mantiz Venus, but it seems to not work and short-circuit immediately. I don't know what causes this.
Are there any PSU's to recommend for the MBP 2020?
@wunair, It's likely the RX Vega 64 causing the power issue rather than other components. Which particular model of this GPU do you have? Is there a vBIOS switch for you to choose a different mode? The firmware of the Mantiz Venus dictates Power Delivery amount (87W) so the laptop can't change that.
@itsage, I have the standard AMD RX Vega 64 version. No, I do not switch to a particular vBIOS mode. If I recall correctly, it was possible to adjust a couple of things for this card, but I've never adjusted it.
So even if I get a higher watt PSU, the max charging would stay the same? Would it be recommended to switch to a single monitor for less battery consumption?
@wunair, The Power Delivery does not change regardless of the PSU you install. The only possibility is to flash a different firmware on the Mantiz Venus mainboard so that it can have a different PD such as 60W. That way the PSU has more power for the GPU. Take a look at TBTFlash and Sonnet Breakaway 60W firmware.
@wunair, The RX Vega 64 is notorious for high current peaks that cause power related issues in eGPU enclosures. I don't know for certain but you can try a firmware with lower Power Delivery so that the PSU has a better chance in sustaining the RX Vega 64.