I'm narrowing down my options for a power supply to use with my 5090 and 9850x3D combo. Here are the choices I've sorted out:
- Corsair HX1000i ATX 3.1 1200W Platinum
- Corsair RM1200e ATX 3.1 1200W Gold
- Corsair HX1000i ATX 3.1 1000W Platinum
- Corsair HX1000i (2023) 3.1 1000W Platinum
- Corsair RM1000e ATX 3.1 1000W Gold
Which of these would be sufficient for my setup but still somewhat future-proof?
4 Answers
I recommend going for a PSU with at least 1200W capacity. The HX1200i 2025 variant or Shift variant are both solid picks. A good power supply is crucial for ensuring your system runs smoothly.
If you're looking for a solid choice, the be quiet! Dark Power 14 1200W Titanium PSU is top-notch. It’s reliable and handles the power needs of a 5090, which can draw up to 600W. Make sure to get a PSU that supports those 12VHPWR connectors directly, so you can avoid adapter cables that could cause issues. When you're investing in high-end parts, don’t skimp on your power supply!
Honestly, any of these will work, but I’d lean towards the cheapest option. Corsair does have a reputation for being expensive due to brand name, and trying to future-proof every component can be a bit over the top. If you don't want to spend too much, check out Montech Century II in 1050W or 1200W; it’ll work just as well!
But let's not forget, Corsair has been known to cover repairs for 12VHPWR failures, including replacing GPUs out of warranty! They might have the highest reliability with these connectors.
Why stick to Corsair? There are plenty of quality options out there. For instance, the Lian Li Edge is an excellent PSU choice and might outperform the Corsair models you've listed.

What makes you think Nvidia will ditch the 12V cable? They've invested a lot into it, and it seems to be used in their AI cards too, so discontinuing it would be a big deal. Have you seen anything credible saying they will?