Back in the day, 1 kW PSUs were a prerogative of rather extreme high-end desktops carrying an overclocked CPU, a couple of graphics cards, several hard drives, and loads of other parts. Although there is a trend towards miniaturization of high-performance PCs, there is also a trend towards increasing their performance. Trying to strike a balance between smaller dimensions and higher power delivery, SilverStone has developed a 1 kW SFX-L PSU.

SilverStone’s SST-SX1000-LPT is the world’s first SFX-L power supply that's rated for 1000 W. This is a fully modular PSU featuring compliant with the ATX 2.4 as well as EPS (presumably v2.92) specifications, and features a full suite of power connectors, ranging from ATX and EPS (for HEDT systems) to multiple power plugs for PCIe graphics cards and as SATA drives.

The PSU can deliver up to 83.3 A over its 12V rail to power-hungry components, which is naturally its main selling feature. Another one is, of course, its high capacity for its size. The SX1000 has a 969 W per liter power-to-volume ratio, which SilverStone's highest to date. And even with all the work to build an electrically dense PSU, SilverStone hasn't skimped on overall power efficiency either; the active PFC PSU is 80 Plus Platinum badged.

While SilverStone’s SST-SX1000-LPT PSU was demonstrated at this year's Computex, it is still pretty far from release. The company is looking at Q1 2020 as a possible release timeframe, with pricing information expected around that time as well.

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  • umano - Friday, October 11, 2019 - link

    That is what I need as well but there will be soon, I hope, the technology to put everything you mentioned in a beautiful and compact mItx case so we can bring it also on set in a backpack.
    I mean the tech is here but available only on apple products (dual gpu on a single board, 4 thunderbolt on a laptop)
  • tiefox - Monday, October 26, 2020 - link

    thermaltake core g3 is the best for this, fits a eatx board and it is very slim!
  • zodiacfml - Monday, June 17, 2019 - link

    It appears that it is getting easier to make smaller form factors. I guess it is time for even smaller PSUs to go mainstream like those from HDPLEX.
  • The_Assimilator - Tuesday, June 18, 2019 - link

    Very impressive.
  • u.of.ipod - Tuesday, June 18, 2019 - link

    Thank you for properly calling this "SFX-L" unlike the last Anandtech review of a SFX-L PSU where they just called it "SFX"
  • YoloPascual - Tuesday, June 18, 2019 - link

    1.3 hp per L of displacement
  • r0br0b - Tuesday, November 3, 2020 - link

    Everyone seems to give these USA OEMs way too much credit as if they made it which they don't 99% of time. Enhanced Electronics is the ODM and you can see from their 1000W SFX-L ENP8010 80+ Platinum product page at that they are the true OEM. Also, we bought the 800W Silverstone SFX-L Titanium and it failed validation testing for both i9-10900KF + 3080 and also 3090 under load. Crashing occurred very quickly after getting into Prime95+Superposition test so as of now only the Corsair SF750 SFX Gold will pass validation for i9-10900KF + 3090. So temper expectations a bit yall, this is nothing special and who knows if it will even pass validation (no crashing) for the specs you try to do.

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