Silverstone’s Nightjar NJ450 is Platinum-certified and passively cooled

Silverstone just released a new model in its Nightjar family of passively-cooled power supplies. Like its brethren in the series, the Nightjar NJ450 is fully modular and bears an 80 Plus Platinum certification. There are no gimmicks here; this unit isn't “partially passive” or anything of the sort. The NJ450 doesn't have a fan, and the external casing is a series of ribbed plates that serve as heatsinks.

Unlike the last Nightjar power supply we looked at, this model specifically fits the SFX-L form factor. For those unfamiliar, SFX-L power supplies have the same height and width as regular SFX units, but they're deeper. Silverstone created the SFX-L category, and at the time the company said that the object was to allow SFX power supplies to use 120-mm fans. That's clearly not the case here, though.

The fully-modular NJ450 comes with the usual 24-pin ATX power connector, a 4+4-pin EPS12V cable, eight SATA power connectors, and a whopping four 6+2-pin PCIe power cables. Given that the PSU's maximum capacity is 450 W, we would be leery about using all four of those connectors at once, as doing so would enable the connected cards to draw 600 W from those plugs alone. In any case, the NJ450 should be more than capable of powering all but the most insane machines—especially considering that it will fit in many SFF cases.

Silverstone hasn't mentioned how much the new Nightjar will cost when it hits the market, but expect to pay a pretty penny for the privilege of Platinum efficiency in a package this quiet and petite. As a point of reference, its ATX brother the NJ520 currently goes for $149.

Comments closed
    • psuedonymous
    • 1 year ago

    Talk about burying the lede! “SFX” should probably be in the headline rather than hidden away in the second paragraph, as it is currently the only passively cooled SFX PSU on the planet.

    • Airmantharp
    • 1 year ago

    450w is actually overkill for a high-end system running at stock speeds, especially for an SFF.

    Only challenge that jumps out at me is that many SFF systems are airflow-challenged. Throwing in a passively-cooled PSU to run a ~100w CPU and ~250w GPU would likely require designing the system around the PSU, possibly including the enclosure itself, for what are likely to be minimal or even negative gains in noise performance.

      • Srsly_Bro
      • 1 year ago

      That works fine until you want to run both CPU and GPU at 100% load. I personally like to not worry about hitting the ocp on the PSU when I am just trying to use the computer for different things.

      High end is not 8700k and gtx 1070.

      High end is at least 7900x and 1080Ti.

        • euricog
        • 1 year ago

        Given that a 8700k and a decent 1070 will get you very close to the $1,000 mark, I would definitely label such a system high end. Or maybe I’m just really poor by today’s standards and a $2,000 PC is now mainstream…

          • Srsly_Bro
          • 1 year ago

          Intel hedt platform is named for a reason. You don’t get much for $2k when configuring a new PC.

            • K-L-Waster
            • 1 year ago

            And how many HEDT systems are also SFF?

            (Answer: almost none of them.)

            • Srsly_Bro
            • 1 year ago


            High end is high end platform

            Mainstem is main stream platform.

            This is well established within Intel’s product segmentation.

            The casuals here don’t have a clue.

            Your $350 MSRP CPU is not high end.

            Your 400$ GPU is not high end

            Just like a crappy mustang is not a high end sports cars because for the fact not everyone can afford one.

      • EndlessWaves
      • 1 year ago

      PSUs are already major design considerations in SFF enclosures.

      Certainly in mine (Sentry case) the PSU is the fattest component in there and determines the width of the case. This unfortunately means the PSU fan is pressed up against the case’s external grille and there is some turbulence at higher fan speeds.

      I was hoping we’d see someone design an SFX PSU with front to back airflow for this style of case, which is pretty close to what this is. I’d prefer a 60mm fan and a standard length SFX (as -L blocks a drive mount) but any new airflow design is welcome.

      Although it’s a shame it’s still using large cables. Unsleeved is the way to go for SFF.

        • psuedonymous
        • 1 year ago

        [quote<]I was hoping we'd see someone design an SFX PSU with front to back airflow[/quote<][url=,7-M-312610-13.jpg<]This was the 'original' SFX layout[/url<], and was rapidly abandoned (outside ultra-cheap explodes-at-rated-load ebay specials) to allow the use of 80mm and 92mm fans - and later 120mm with SFX-L - rather than a tiny 60mm screamer.

    • chuckula
    • 1 year ago

    Being passively cool is like when the [url=<] Fonz is about to comb his hair and then realizes it's already perfect[/url<].

      • DPete27
      • 1 year ago

      I cleaned my PCs this weekend. Both have semi-passive fan operation.

      My HTPC’s (A8-5600K) Silverstone SFX 300W (80+ bronze) PSU fan has apparently never made a single revolution. Absolutely zero dust anywhere inside that unit

      My main rig’s EVGA 550W G2 (80+ gold) fan rarely spins. It only comes on in some games when my RX480 undervolt doesn’t get applied.

        • Shobai
        • 1 year ago

        “For every[one] else, there’s Mastercard”?

      • UberGerbil
      • 1 year ago

      Fun fact: that’s from the pilot or the first season, when the network censors wouldn’t allow them to put a leather biker jacket on a “good” character, so he had to wear that windbreaker instead.

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