Question What is mean by ATX 3.0 and PCIe 5.0 read PSU?

tablespoon

Member
Jun 21, 2022
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Hi, I plan to build a Raptor Lake system. I see some new power supply advertised to be ATX 3.0 and PCIe 5.0 ready. Does that mean to build a Raptor Lake system and perhaps also with a PCIe 5.0 GPU, it is better to use such power supply rather than older ones sold few years ago? What are the pros and cons of getting such a power supply?
 

biostud

Lifer
Feb 27, 2003
19,488
6,551
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It'll have a 12VHPWR gpu connector built-in instead of needing an adapter
And some other specs too:
Key Features:
The key features of these power supplies are:

  • 16-pin PCIe 5.0 12VHPWR power connector
  • Quicker system wake up and power on signal times
  • 12V rail, which can be boosted to 12.2V
  • Alternative Low Power Mode (ALPM)
  • Up to 3x GPU power excursion
  • Minimum of 175.200 power cycles
  • 2.5-5x times higher slew rates on the +12V rail
  • Higher than 60% efficiency for 10W loads (2% of max-rated capacity and higher than 70% efficiency)
  • Rated for up to 200% of power for 100μs (microseconds)



There are no cons, if you’re in the market for a new PSU, but most likely you can reuse your old one if it is not too old.