What Do I Need to Replace to Upgrade to a 5090 GPU?

Some folks are being overly cautious about the PSU. If you adjust your GPU settings (like undervolting), your current PSU could work just fine. Ultimately, fit that awesome new GPU in first, then assess if a CPU upgrade is necessary down the line.

A top-tier PSU is a must for such a power-hungry GPU! I have a similar setup and went with a 1000w PSU when I upgraded to a 5090. It’s been running flawlessly for 4K gaming.

Your setup is solid as is! Upgrading your GPU shouldn’t require much else right away, but if you find your CPU starts bottlenecking performance, then consider going for a higher-end CPU like the 14700K or 14900K in the future. Just make sure your motherboard’s BIOS is up-to-date.

Honestly, your PSU seems decent. If you manage to undervolt your GPU, you might be just fine with what you have. It’s a quality unit, so I wouldn’t stress too much about it. Just slot in the new GPU, and if there are issues later, you can think about a CPU upgrade.

To properly upgrade, you'll likely need a power supply of at least 1000 watts, and possibly even 1200 watts if you plan on future upgrades with a high-performance CPU. Your current PSU just might not cut it for the 5090, especially with your CPU pulling quite a bit of power too.