SilverStone SX1000 Platinum, 80 PLUS Platinum 1000W fully modular SFX-L power supply, SST-SX1000-LPT V1.1

Product Information

For more on this subject, see our A Basic Guide To Motherboard, Case, and Power Supply Form Factors feature. The RM1000x doesn’t offer ATX 3.0 compatibility and the side-mounted cable interface. But it is slightly affordable, which makes it an excellent value for money!

e24: September 15th. When I made this thread, there were few true ATX 3.0 PSUs, and little information regarding upcoming ones. Because that is no longer the case, with significant improvements in availability / options, this thread is no longer being maintained / updated. My best advice if you're unsure on what to get is: The Seasonic SSR-1000TR is their best offering in the 1000W power range! It’s fully modular and 80+ Titanium-certified. It has a peak efficiency of 94% at 50% system load capacity, making it ultra-powerful for high-performance PC builds. The Be Quiet! Straight Power 11 Platinum is among the few 1000W multi-rail PSUs with industry-leading build quality. It’s built with premium internal components with 80+ Platinum certification and up to 94.1% efficiency at 50% 230V loads. e11: November 15th, added other Silverstone models, ASUS Loki line beginning to see releases at least in Sweden. In fact, it's going to be quite the job to stuff anything close to 1300W inside a Mini-ITX case. There's only one PCIe port on a Mini-ITX motherboard, and it's not like there's many headers for much else. That said, I'm sure someone will manage it: a truly overpowered PC, not much bigger than a loaf of bread.

The SilverStone SX1000 is the strongest small form factor PSU money can get you today.

Update November 17th: GamersNexus has put out a very thorough video on the connector melting issue here, including actual reproduction of melting. It's incredibly informative and I highly recommend watching both it and their initial series of tests from October 30th if you have any concerns whatsoever about the reported issues with 12VHPWR cables / adapters. For the tl;dr summary, courtesy of u/Nestledrink over at the Nvidia subreddit:

e19: January 15th. Updating Corsair with their rumored Shift line (thanks u/RacingJayson), and looks like the SFX-L PSU has popped up on Cybenetics (thanks u/mehrdad96). Also updated Dark Power 13 with wattages, MSRP, and a release date (thanks u/Terra711). u/techfiend5 also informed us of an update from Cybenetics / SilverStone that the Hela 1200R has now met ATX 3.0 standards when re-tested, so I've removed the disclaimer from their section of the post. Cleaning up some of the strikethroughs / outdated info as well. NZXT is famous for its premium-built cases and gaming PC components. The NZXT C1000 Gold is one of their few power supplies. It has a robust build quality for steady and reliable power flow to your high-end components! Specs-wise the unit features 25A +3.3V and +5V rails, the +12V is capable of 83.3A, +5VSB 3.0A, and the -12V 0.3A. For efficiency, the unit is capable of around 90% efficiency at 20%-100% load which is very good. For cooling the SST-SX1000-LPT SFX features a 120mm fan with a passive mode that enables under 200W of power consumption. If you maintain 300-700W of power consumption the fan spins at a very low 900RPM, as you go beyond 800W of power consumption, the fan starts to spin much faster around 1400-1750RPM. Keep in mind, this is an impressive amount of power going thru a very tiny PSU, so audible cooling near 1000W of load should be expected.e17: December 18th, it looks like Lian Li is making a 90 degree adapter for 12VHPWR with a thermal pad and microcontroller that monitors temperature and can cut power if it detects that things are getting a little too toasty. No further information regarding pricing nor release date available at this time.