I wouldn't expect the Cybertron unit to be particularly reliable - nor would I feel too confident in it's ability to provide 39A on the 12V rail as claimed.
I can't find any information on the OEM of those units, so I'd have to assume it's not great.
Quality matters more than strictly (claimed) wattage.
If you're upgrading most/all of the system anyway, I'd have to recommend replacing the PSU also.
Realistically, something like a CX450 from Corsair is a quality unit, and pretty affordable in most regions.
PCPartPicker Part List
Power Supply: Corsair CX (2017) 450 W 80+ Bronze Certified ATX Power Supply ($53.98 @ Newegg)
Total: $53.98
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2019-12-29 01:24 EST-0500