Monday, May 21st 2018

SilverStone Intros Nightjar NJ450-SXL Fanless Power Supply

SilverStone introduced its Nightjar NJ450-SXL, a fan-less (silent) power-supply in the SFX-L form-factor. The unit boards of full modular cabling, and relies on a chunky, ridged aluminium body that doubles up as a heatsink, to cool itself. The unit puts out 450W of continuous power, with 80 Plus Platinum-rated efficiency. It supports the latest ATX 12V 2.4 specification.

Under the hood, the NJ450-SXL features a single +12V rail design, active PFC, and most common electrical protection mechanisms. There's enough juice and straws for a gaming PC build with a fairly high-end graphics card. You get a staggering four 6+2 pin PCIe power connectors (probably the highest ever for a 450W PSU), besides the 24-pin ATX, 8-pin EPS, eight SATA power, three Molex, and a Berg. The company didn't reveal pricing.
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8 Comments on SilverStone Intros Nightjar NJ450-SXL Fanless Power Supply

#1
jabbadap
"You get a staggering four 6+2 pin PCIe power connectors (probably the highest ever for a 450W PSU),..."

Obviously one cannot use them at the same time(4*150W=600W + sata, cpu, pcie etc. out of 450W psu). So spare cables, good to have I don't deny that. Albeit reason for four 6+2 pin cables might be just single cable for single connector and not those banana wires with two pcie connectors. Wonder who is the maker of this, Seasonic still? Though SuperFlower have used those massive heatsink outer side of the case on it's passive cooled psus.

PS. Product page of Nigthjar NJ450-SXL.
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#2
iO
"jabbadap said:
"You get a staggering four 6+2 pin PCIe power connectors (probably the highest ever for a 450W PSU),..."

Obviously one cannot use them at the same time(4*150W=600W + sata, cpu, pcie etc. out of 450W psu). So spare cables, good to have I don't deny that. Albeit reason for four 6+2 pin cables might be just single cable for single connector and not those banana wires with two pcie connectors. Wonder who is the maker of this, Seasonic still? Though SuperFlower have used those massive heatsink outer side of the case on it's passive cooled psus.

PS. Product page of Nigthjar NJ450-SXL.
Its made by Enhance and is based on their SX800-LTI model.
So theoretically you could overcurrent it by two times its power rating without popping some mosfets:D
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#3
owen10578
I might be missing something but how does it keep the caps cool inside if its closed off?
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#4
jabbadap
"iO said:
Its made by Enhance and is based on their SX800-LTI model.
So theoretically you could overcurrent it by two times its power rating without popping some mosfets:D
Have a review somewhere? To me it's sounds little odd that one would downgrade 80plus rating and lower the watt output, when usually it used to be the other way round(i.e. some 450W gold could be altered to 500W bronze). Or the platform could really be the same but components are altered for lower wattages.
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#5
RH92
Not impressed by the product considering something like SF600 comes in a smaller form factor has more power and is very silent already ! But regardless looking forward for some proper reviews.
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#6
theGryphon
I wonder if they're doing something to achieve thermal coupling between the panels, like a thin strip of thermal pad, idk, anything could help when you don't have any fans...
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#7
iO
"jabbadap said:
Have a review somewhere? To me it's sounds little odd that one would downgrade 80plus rating and lower the watt output, when usually it used to be the other way round(i.e. some 450W gold could be altered to 500W bronze). Or the platform could really be the same but components are altered for lower wattages.
Info is from here: SmallFormFactor.net

I guess they just run it at half its rated load to be able to cool it passively, just like some semi passive PSUs are able to sustain 50% load without active cooling. And the lower Platinum rating might be because at 450W it runs outside of the high efficiency zone if the platform is capable of 850W peak.

Edit: Looking at some reviews, the SX-800 has a completely different layout than what is shown in the 4th picture sooo I guess its not the same platform after all...
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