Cooler Master X Silent Edge 1100W: The Strongest Passive PSU!

The Cooler Master X Silent Edge 1100W is the strongest passively cooled PSU up-to-date, delivering up to 1100W at 230V and up to 850W at 115V. This PSU uses a unique cooling solution, designed and manufactured by Cooler Master. 

The Cooler Master X Silent Edge 1100W will be included in my best ATX v3.x & PCIe 5.x PSU picks article.

Cooler Master is an expert in cooling solutions, so I am eager to check out their first passively cooled unit, the X Silent Edge. This PSU promises high performance and insane power levels for a passive PSU. It uses an in-house platform, and according to CM, everything is made by its own production lines, including the chassis, all relevant cooling parts, and the PCB.

So far, users who wanted a strong, at the same time dead silent PSU didn’t have any options, especially if they also wanted an ATX v3.1 compliant unit. This changes with the X Silent Edge model, which uses a specially designed chassis with an embedded cooling solution to remove the heat from the PSU’s internals. This advanced cooling system allows for increased power levels without the need for forced cooling.

X Silent Edge 1100W Key Features

  • Fanless Design
  • Advanced Heat Pipe Technology
  • Digital Monitoring: Features a digital monitor for real-time temperature and load tracking.
  • High-Quality Components
  • MasterCTRL Software Integration: Allows users to monitor and manage PSU parameters from their desktops
  • Energy Efficiency: Incorporates an active bridge rectifier for improved efficiency and performance.

ATX v3.1 1000W PSU Reviews:

Technical Specifications:
  • Manufacturer (OEM): Cooler Master
  • Max Power: [230V] 1100W [115V] 850W
  • Cybenetics Efficiency: [230V] Cybenetics Platinum (91-93%)
  • Noise: Cybenetics A++ (<15 dB[A])
  • Compliance: ATX v3.1, EPS 2.92
  • Operating Temperature (Continuous Full Load): 0 – 40 °C
  • Alternative Low Power Mode support: Yes
  • Power 12V combined: 1099.2W
  • Number of 12V rails: 1
  • Power 5V + 3.3v: 120W
  • Power 5VSB: 15W
  • Cooling: Passive
  • Modular Design: Yes (Fully)
  • High Power Connectors: 2x EPS (2x cables), 3x PCIe 6+2 pin (3x cables), 1x PCIe 12+4 pin (600W)
  • Peripheral Connectors: 8x SATA (2x cables), 4x 4-pin Molex (1x cable)
  • ATX Cable Length: 645mm
  • EPS Cable Length: 645mm
  • 6+2 pin PCIe Cable Length: 550mm
  • 12+4 pin PCIe Cable Length: 650mm
  • Distance between SATA / 4-pin Molex: 140mm / 120mm
  • In-cable capacitors: No
  • Dimensions (W x H x D): 150 mm x 85 mm x 180mm
  • Weight: 2.65 kg (5.84 lb)
  • Warranty: 15-years
  • MSRP (including VAT): $400

Power Specifications

Rail 3.3V 5V 12V 5VSB -12V
Max. Power Amps 20 20 91.6 3 0.3
Watts 120 1099.2 15 3.6
Total Max. Power (W) 1100
Pages ( 1 of 11 ): 1 234567891011Next »

Related Posts

6 thoughts on “Cooler Master X Silent Edge 1100W: The Strongest Passive PSU!

  1. Is it necessary to have a case that allows natural convection, that is, one that has an opening for airflow in the part above the PSU? For example, the be quiet! Dark Base Pro 901 is not compatible with this PSU because it does not have openings on the shroud top?

  2. Thanks for the review.
    Now this in SFX 750-850w and it’s golden.
    Even if i had to pay 300€ for a Fanless and no coil whine.

    1. A lot of what makes this sort of thing possible is the somewhat large size, since smaller PSUs need to pack components more tightly which reduces their exposed surface area and therefore cooling potential. This is why SFX PSUs tend to be louder, because the fan needs to spin faster to account for this difference and keep components cool. In other words, less surface area needs more airflow to dissipate heat, while more surface area will need less; this is why passive CPU coolers like the Noctua NH-P1 are so huge, and why rack-mounted servers are able to have such small heatsinks for how power-hungry server hardware can be.
      This isn’t to say that a passively cooled SFX unit is impossible, but rather that it would require a lot of development and would have a much lower capacity. After all, safety should be the number one thing when designing (and indeed buying) a new PSU.

  3. honestly I don’t see the point (it’s a showoff most likely), to require as much power you’d need a Threadripper and probably two 4090, there’s no way to cool these down passively
    what we need are affordable 400W Passive SFX models instead

    1. We might not need 1100W necessarily, but the smaller 850W model is very welcome and I’ll be buying one of these two when they’re finally available.

      I have a RTX 4090 PC with custom watercooling that is completely silent even under heavy load and currently the Seasonic 600W passive PSU. It’s a tad undersized, so I want to upgrade – but for now, the only upgrade path has been the 700W Seasonic. I’m not spending that much money on a 100W upgrade that’ll be useless when GPUs inevitably use the full 600W the new cable can provide.

      I do not consider an actively cooled PSU an option because I have yet to see one that’s certain to not add noise to my system at full load.

Leave a Reply

Your email address will not be published. Required fields are marked *