PSU for a 4090/7800X3D build

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I'm looking to build a 4090 7800X3D system. I'm not interested in overclocking etc. I just want a functional system with a bit of leeway for a future graphics card.

But I'm confused about the PSU. I think it will need 1000W to be a bit future proof?

The PSU's I've identified are:
  • Corsair RMx Series RM1000x 80 PLUS Gold Fully Modular ATX Power Supply (CP-9020201-UK) - £179.99
  • Be quiet! Straight Power 12 1000W 80 Plus Platinum ATX 3.0 Power Supply - £215.99
Any comments on either of those?
 
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