Seasonic's new power supply has enough juice and connectors to power four RTX 4090s

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The 2200W PSU is Seasonic's most powerful power in its current lineup.

Seasonic Prime PX-2200
(Image credit: Seasonic)

Seasonic's latest PSU, part of its Prime series lineup, sports a whopping 2200 watts of power capability. Dubbed the Prime PX-2200, it's naturally ATX 3.1 compatible, with four 12V-2x6 power cables—enough to power four top-end RTX 4090 graphics cards. U.S. pricing is unavailable (likely due to the 1,800-watt  limit of standard U.S. power outlets), but European pricing is set at €579.90.

The PSU's 2200W rating makes it the most powerful unit in Seasonic's arsenal currently, featuring 37% more wattage headroom than its 1600W counterparts. The PX-2200 is 80 Plus platinum rated and fully supports the latest ATX 3.1 and PCIe 5.1 specifications, future-proofing the PSU to operate next-generation graphics cards. The monster PSU also comes with a lengthy 12-year warranty.

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Seasonic Prime PX-2200
(Image credit: Seasonic)

The PX-2200 is advertised as having extremely tight load regulation tolerances of just under 1% on the primary rails. This is purportedly 5x better than Intel's own specification, which only requires 5% of deviation. This gives the PX-2200 the capability to deliver very clean power to its host system, improving system reliability.

For cooling, Seasonic's new flagship PSU features a built-in 135mm fan with a fluid dynamic fan that the company says says improved acoustics, longevity, and power efficiency over traditional ball-bearing designs. The fan also has a 0 RPM profile, so it stays off at power loads of up to around 40%. At maximum load, the fan is rated to generate up to 20 dBA of noise.

As you would expect from a monster 2200-watt power supply, the PX-2200 has as much connectivity as you're likely to ever need. The unit features one 24-pin motherboard cable, three 8/4 pin CPU cables, four 8/6 pin PCIe cables, four SATA cables with four connectors each, one SATA 3.3v cable with two connectors, one Molex cable with three connectors, and four 12V-2x6 power cables with two featuring different pin layouts that connect to different ports on the PSU directly (does not affect GPU connectivity).

The PX-2200 comes with five power rails in total: +3.3V, +5V, +12V, -12V, and +5VSB. The +3.3V rail is good for up to 25 amps and 125 watts of power. The +5V rail can support up to 25 amps of power; the -12V rail up to 0.5 amps and 6 watts, and the _5 VSB rail up to 3 amps and 15 watts, respectively. The +12V rail is where you get the overwhelming majority of your power, as it's capable of generating up to 183.3 amps and 2200 watts of power.

Aaron Klotz
Aaron Klotz
Contributing Writer

Aaron Klotz is a contributing writer for Tom’s Hardware, covering news related to computer hardware such as CPUs, and graphics cards.

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30 Comments Comment from the forums
  • DS426
    Going to be a bit of a problem for folks on 120V 15A circuits... (~1800W limit). Heck of a PSU though for sure!

    1-2% tolerances are typical almost across the board on Seasonic PSU's.
    Reply
  • vanadiel007
    A power supply, or a complete new PS27. Decision decisions...
    Reply
  • JamesJones44
    DS426 said:
    Going to be a bit of a problem for folks on 120V 15A circuits... (~1800W limit). Heck of a PSU though for sure!

    1-2% tolerances are typical almost across the board on Seasonic PSU's.
    Came here to say the same. Home consumers in North America buying this should make sure to get an electrician lined up to run a 20 Amp circuit for them! Countries in Europe that do 16 amps at 230 should be good to go though.
    Reply
  • UnforcedERROR
    DS426 said:
    Going to be a bit of a problem for folks on 120V 15A circuits... (~1800W limit). Heck of a PSU though for sure!

    1-2% tolerances are typical almost across the board on Seasonic PSU's.
    I literally thought of this instantly. Good luck if you're a renter!
    Reply
  • PlanesFly
    DS426 said:
    Going to be a bit of a problem for folks on 120V 15A circuits... (~1800W limit). Heck of a PSU though for sure!

    1-2% tolerances are typical almost across the board on Seasonic PSU's.
    That's incorrect, the sustained load limit for a 120v 15a circuit is only 1,300 watts, you cannot pull 15a continuously. 80% of the circuit limit is your maximum continuous. Don't forget about power conversion losses as well, that further increases the load at the outlet. This 2,200 watt can't even be done on a 20amp outlet, you need 240v circuit .
    Reply
  • truerock
    PlanesFly said:
    That's incorrect, the sustained load limit for a 120v 15a circuit is only 1,300 watts, you cannot pull 15a continuously. 80% of the circuit limit is your maximum continuous. Don't forget about power conversion losses as well, that further increases the load at the outlet. This 2,200 watt can't even be done on a 20amp outlet, you need 240v circuit .
    So. if I bought one of these and plugged it into my 15 amp 120v outlet would it just run and never use the fan?
    Reply
  • truerock
    Actually, my APC UPS says I'm getting 122 volts

    I wonder how many amps I'm actually getting?
    Reply
  • JamesJones44
    PlanesFly said:
    That's incorrect, the sustained load limit for a 120v 15a circuit is only 1,300 watts, you cannot pull 15a continuously. 80% of the circuit limit is your maximum continuous. Don't forget about power conversion losses as well, that further increases the load at the outlet. This 2,200 watt can't even be done on a 20amp outlet, you need 240v circuit .
    Good point! I didn't even consider sustained circuit output when I was thinking you would need a minimum of 20 amps. 220/240v would be the only option to run it properly.
    Reply
  • JamesJones44
    truerock said:
    Actually, my APC UPS says I'm getting 122 volts

    I wonder how many amps I'm actually getting?
    Depends on the circuit and power draw. Most houses in North America run outlets on 15 Amp circuits, but some run 20 Amp circuits for various reasons, typically when they know an area will have a high power draw (garage workshop, counter top kitchen appliances, etc.).

    If the unit displays Watts you can convert it Watts / Voltage = Amps used.
    Reply
  • folem
    JamesJones44 said:
    Came here to say the same. Home consumers in North America buying this should make sure to get an electrician lined up to run a 20 Amp circuit for them! Countries in Europe that do 16 amps at 230 should be good to go though.
    The good(ish) news is that almost all houses built since the mid-90s should have 20A circuits. The bad news is that those are going to have multiple outlets on a single circuit, usually a whole room and sometimes multiple rooms. I guess you're good as long as you don't turn on anything else in the room while using the PC heavily. Regardless of what the circuit is designed for, most outlets are only designed for 15A - you can tell outlets designed for 20A by the sideways-T shaped neutral slot. The outlet itself isn't a huge deal, a reasonably competent DIYer should be able to swap one in a few minutes with a screwdriver and voltmeter to test that the circuit is actually off (I often use a desk lamp instead).
    Reply