Seasonic PRIME PX-1600 ATX 3.0 1600W Platinum Power Supply Review

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Overview

The Seasonic PRIME PX-1600 ATX 3.0 1600W Platinum packaging is huge! I mean, huge! That said, it is very much like what Seasonic has been using for its PRIME units over the last number of years. The front of the package is bare of information save for the advertising about the 12-year warranty, and the 80 Plus Platinum seal. When we check the 80 Plus website we find that this unit is listed and, as such, we will see how it does in this regard later.

The rear of the packaging has a lot more in the way of advertising as we find advertisements for the FDB fan, fan controller, voltage regulation, ATX 3.0 compatibility, 16-pin PCIe Gen 5 Cable (12VHPWR), etc. This is in addition to the efficiency graph and found here as well. The side of the package has the power label (reproduced below) and the connector count (reproduced below).

Seasonic PX-1600 power table

The PRIME PX-1600 ATX3.0 is advertised as being a single 12v rail power supply with a capacity of up to 133.3A (or ~99% of the unit’s capacity) if necessary. The minor rails (5v and 3.3v) have a capacity of 25A each and the combined capacity of those two rails is 125W (which seems low for a 1600W unit). Combined with these outputs, we find that this unit has 3 ATX12v/EPS connectors, 6 PCIe connectors, 16 SATA connectors, 2 3.3v SATA connectors, 3 Molex connectors, and 2 12VHPWR connectors.

Once we open the PRIME PX-1600 ATX3.0 packaging we find the power supply, mounting screws, modular cables, the power cord, Velcro straps, zip ties, power supply tester, and the user manual. The user manual comes in two parts and covers some basic installation, warranty, and troubleshooting items. Let’s move on to the unit itself now.

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REVIEW OVERVIEW

Voltage Regulation
9.5
DC Output Quality
9.25
Efficiency
9.5
Noise
9.25

SUMMARY

The Seasonic PRIME PX-1600 ATX3.0 is the latest and greatest power supply we have seen from Seasonic. Wait, scratch that. This is the best power supply we have seen from any brand to date. Thus, the only thing you have to ask yourself when looking at this power supply is do you want the best overall unit we have seen while featuring excellent Voltage Regulation. DC Output Quality, Efficiency, and Noise profile? If yes, then are you ready to pay to play in this kind of performance land!

Discussion (8 replies)

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Grimlakin

That's a crap-ton of power. Perhaps even metric. :) I'd need a whole new UPS to support something that could max that out.

Brent_Justice
Brent_Justice 👍 1

Only thing that has come close to needing a PSU like that was back in the day with Dual or Quad SLI or CrossFire systems lol. But for some reason, even though I don't need it, I want it? :P

Paul_Johnson
Paul_Johnson 👍 1

"Brent_Justice, post: 79736, member: 3" wrote:

Only thing that has come close to needing a PSU like that was back in the day with Dual or Quad SLI or CrossFire systems lol. But for some reason, even though I don't need it, I want it? :p


Everything needs a PSU like this!

Peter_Brosdahl
Peter_Brosdahl

Yeah, I want one too. Ouch on the price but made like a tank and ready to conquer.

D

I wonder, how does this PS compare to the EVGA 1600W P+ Platinum? I bought the EVGA last year when I put together my latest system. IIRC, this site had a special promotion when purchasing through a link provided ... I did.

The downside I found was the lack of a reasonably priced UPS to handle the load. My older 1200W just wasn't up to the task. The next step up was enterprise level at an enterprise price. There may be some around now ... I don't know; I haven't checked in a while.

LazyGamer

"Ditchinit, post: 79797, member: 4253" wrote:

I wonder, how does this PS compare to the EVGA 1600W P+ Platinum? I bought the EVGA last year when I put together my latest system. IIRC, this site had a special promotion when purchasing through a link provided ... I did.


Without delving into quality - the Seasonic is a new unit with ATX 3.0 / PCIe 5.0. Not sure if EVGA has started supporting those yet.

Grimlakin

"LazyGamer, post: 79798, member: 1367" wrote:

Without delving into quality - the Seasonic is a new unit with ATX 3.0 / PCIe 5.0. Not sure if EVGA has started supporting those yet.


as someone who has the 1300 P+ platinum from EVGA... they did not support it when I got mine. Adaptors all the way.

On the topic of UPS's yes they are out there. Mine I've had for several years seems to be just fine but at peak I'm only pulling about 500 watts according to the UPS software.

Niner51
Niner51 👍 1

Ended up getting one of these with the new 3.1 ATX spec. Sure it's overkill, but I usually do that with power supplies in my builds. The PSU quality is very nice, and the cables are great also. Great review as always here.

Paul Johnson
Paul is a long time PC hobbyist and tech enthusiast having gotten his start when he broke his first C64 quickly followed by breaking his first IBM XT. Most notably however, for 12 years, he served as the Power Supply Editor for one of the truly early, groundbreaking, and INDPENDENT PC enthusiast sites ([H]ardOCP) until its mothballing in April of 2019. Paul now brings the same flair and style of his power supply reviews to The FPS Review.

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