WHILE THE RUMORED 600W+ power requirement for the RTX 4090 didn’t quite pan out, Nvidia does recommend at least an 850W power supply for this generation’s top card, up from 750W for the 3090. So there are probably quite a few people out there looking to upgrade their rig. Regardless of whether you’re buying a new system or upgrading though, it’s always a good idea to have a good PSU at the heart of your system. These are five of the ones we recommend for gamers.