Subject: General Tech, Cases and Cooling | May 22, 2018 - 07:10 PM | Tim Verry
Tagged: SilverStone 450W, Silverstone, SFX-L, SFF, Fanless Power Supply, 80 Plus Platinum PSU
SilverStone recently took the wraps off of a new fanless power supply for small form factor (SFX-L) systems. The Nightjar NJ450-SXL is a 450W PSU that conforms to the 80 PLUS Platinum specification where it can hit up to 92% efficiency at 100% load. The power supply, which SilverStone claims is the first SFX-L fanless PSU, features an extruded aluminum outer shell with aluminum fins running front to back on the top, bottom, left, and right sides. It measures 130mm x 63.5mm x 125mm and weighs 1.52 kg (3.35 pounds).
The SFF PSU features a single +12V rail rated at 37.5A and is compatible with a single high end or dual mid-range GPU setup. It further features support for over current, over power, over voltage, and short circuit protection as well as active power factor correction (PFC) for cleaner AC input and more efficient power distribution to the components powered by the PSU.
The fully modular Nightjar NJ450-SXL features flat black cables that are fairly short (most of the cables are under a foot so no putting this bad boy in an E-ATX case!) to make cable management as easy as possible especially when it comes to airflow and shoving (I mean, uhm, organizing) them behind the motherboard tray to make the build look cleaner.
Notably, there are no vents on this power supply. Even so, SilverStone rates the PSU at operating temperatures of 0°C to 40°C while maintaining 100% load and 24/7 operation.
As far as supported connectors, the Nightjar NJ450-SXL features support for:
- 1 x 24-pin ATX
- 1 x 8-pin EPS
- 4 x 8-pin PCI-E
- 8 x SATA
- 3 x 4-pin peripheral (think Molex style)
- 1 x 4-pin floppy
SilverStone rates its new PSU at 100,000 hours MTBF at 25°C. It is not clear from its website what the pricing, availability, or warranty length will be (warranty is at least 1 year but it may be longer and the warranty page for the extended year(s) eligible products just hasn’t been updated). I am curious how this PSU will perform especially in a cramped SFF system. SilverStone claims that is silent at 0dBA, and hopefully the reviews can corroborate that. It looks like a good fanless option on paper, but I have a feeling it’s going to come at a premium price point!
Introduction and Features
SilverStone has a long-standing reputation among PC enthusiasts for providing a full line of high quality enclosures, power supplies, cooling components, and accessories. SilverStone recently updated their original ST45SF small form factor power supply to 80Plus Gold status. The new ST45SF-G is rated for up to 450W and comes with fully modular cables. The SFX form factor is frequently found in Micro ATX Media Center PCs and Home Theater PCs.
SilverStone ST45SF-G 450W PSU
Here is what SilverStone has to say about the ST45SF-G: "After successfully expanding and leading SFF (Small Form Factor) cases and SFX PSU into the DIY market, SilverStone engineers have continued their push for advancement in these categories by releasing a true upgrade-worthy small form factor power supply, the ST45SF-G. Despite being half the size of regular ATX power supply, the ST45SF-G can still produce continuous power output of 450W. Its 80 Plus Gold level efficiency is a great leap from the previous SFX best of 80 Plus Bronze and the full modular cables are also the first of its kind for this form factor. To enable users to easily take advantage of this excellent SFX power supply, an adapter is included to convert the ST45SF-G to mount in any ATX case in addition to ones designed for only SFX. For SFF users and for SilverStone, the ST45SF-G is more than just an upgrade, it is an important milestone for DIY desktop computer users."
SilverStone ST45SF-G Main Features:
• Supports standard SFX form factor and ATX (via included bracket)
• 450W continuous power output at 40°C and rated for 24/7 operation
• 80 PLUS Gold level efficiency (87%~90% efficiency at 20%-100% load)
• 100% Modular cables
• Class-leading single +12V rail with 37A capacity
• Strict ±3% voltage regulation with low ripple & noise
• Silent running 80mm fan (18dBA minimum)
• Single PCI-E 8-pin and dual PCI-E 6-pin connectors
• Universal AC input (90-260 VAC) and Active PFC