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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  • careyd - Monday, June 17, 2019 - link

    If only I could find the right case, this PSU could factor in my dream "luggable" video edit/color grading machine. What I want is a full ATX motherboard, Two M.2 drives, Two GPUs, and PSU in a box. Probably go AIO on CPU cooler. Beyond this all media storage over 10Gbe and Thunderbolt. Nothing in the box. Computer case needs to be pelican-cased for airline travel. Anyone have an idea of the smallest case that can do this? (and still keep things cool and quiet)?
  • EliteRetard - Monday, June 17, 2019 - link

    Why full ATX? mATX has enough expansion for what you need and will offer much smaller case options. Like this case for example:

    I've seen SLI systems in this case with water cooling, but it'll require slimmer radiators/fans, custom loop solutions (including single slot GPU blocks), and/or creative airflow setup/testing (like no fans on radiator, but all others intake or exhaust to push air through the rad).
  • careyd - Monday, June 17, 2019 - link

    Why full ATX: PCI cards needed: two GPUs, One SDI capture card, plus 10Gbe and Thunderbolt 3. Haven't found a motherboard yet with both onboard 10Gbe and Thunderbolt 3 so that probably means a 4th slot. Hence the need for full ATX. But if you find that magic mobo, I'd go Micro ATX.
  • careyd - Monday, June 17, 2019 - link

    BTW I really like that case.
  • Reflex - Tuesday, June 18, 2019 - link

    If you have Thunderbolt you don't actually need a SDI card, TB SDI exists and is a thing.
  • edzieba - Tuesday, June 18, 2019 - link

    Have you looked into flex risers and PCIe bifurcation? People have shoved multi-card rigs into tiny cases using ITX motherboards with that method, mATX would give you more than enough PCIe lanes.
  • jabber - Tuesday, June 18, 2019 - link

    Just curious, why two GPUs in a video editor?
  • careyd - Tuesday, June 18, 2019 - link

    Davinci Resolve-long used for grading-now for editing too-lots of grading work as well.
  • Stalph - Tuesday, June 18, 2019 - link

    DaVinci Resolve uses GPUs for image processing. The program is smart enough to allocate frames to different GPU’s i.e. frame 1 = GPU 1, frame 2 = GPU 2, etc. so performance kinda scales with the more GPU’s you have. We used to run Resolve on a old PCIE Mac Pro with an external box full of GPUs. Also GPU RAM is important for Resolve so the Radeon VII with 16GB of RAM beats a RTX2080 Ti in benchmarks (it’s by like 1% but the AMD card is a lot cheaper).

    Resolve is also the leading colour grading tool in the film industry (while thats disputed its either 1st or 2nd). That means things like new New Mac Pro actually are what post production houses want, even if we don’t really want to pay what they’re asking. Lots of PCIE, lots of RAM, and 10Gbe. Also that Vega 2 with 32GB of RAM looks great for post production and VFX composting. Again it’s all price/performance dependent.

    I love the trash can Mac because we do a lot of off-site work, so I wish they had a in-between machine. Maybe a Mac Pro Mini with one MPX module and two single slot PCIE slots. You know fits in a Pelican case…

    Going back to the OP, I really would like a Mini ITX board with 10Gbe and multiple (2-4) Thunderbolt 3 ports. It would make a great compact workstation with a Ryzen 9 and a single GPU. SDI and RAID storage are just a Thunderbolt 3 cable away if required.
  • jabber - Wednesday, June 19, 2019 - link

    Thanks for the response guys. Strangely enough I watched a video on Resolve last night that advised that very feature.

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