Needed to upgrade a RM550X (2018) and this was the best ATX 3.0 & PCIe 5.0 power supply corsair provided that came with 10 year warranty at a reasonable price.
Also has somewhat flexible cables unlike the old 2018 and 2021 RMX power supplies
Looking at the US reviews online it costs 20% more for the SHIFT Series but strangely over here in AUS we sell it for 20% less vs its standard 2021 RMX sibling.
Some spec info here:
850W, 80 PLUS Gold, Zero RPM Fan Mode, Fully Modular Micro-Fit Connectors, 140mm FDB Fan,
ATX 3.0 & PCIe 5.0 Compliant ( For those with new Geforce cards )
10 Year/s Warranty
Cybernetics A grade Noise Level Certification. Its quieter than the 2021 version.
These are good; just before you buy make sure it’ll suit your case, with the connectors being on the side, you need to consider the orientation of how you’ll mount it for the fan and what side the connectors will come out.