I'm writing a mini-review on this PSU that I got today. Due to screenshot limits in regular threads I decided to put the screenshots here. I'll link to it from the hardware subforum. 

The main reason I got this PSU was to be not dependent on the nVidia power adapter for my 4090. As many probably have read this adapter has gotten quite a lot of heat (pun intended) from various tech YouTubers and hardware sites due to its poor design that make it susceptible to overheating and melting. 

Some key points for the new ATX 3.0 standard:

Quote

Designed by Intel, ATX 3.0 PSUs have been expertly engineered to power the latest generation of gaming hardware, including the NVIDIA RTX 40 Series GPUs, Intel 13th CPUs, and AMD Ryzen 7000 series CPUs.

In addition to this, compared to the previous standard, the ATX 3.0 PSUs have been designed to effectively handle GPU power spikes. These can result in unexpected loss of power and your power supply shutting down. Unexpected power spikes have been reported with NVIDIA RTX 30 Series, and since the upcoming 4000 Series has nearly double the power consumption, ATX 3.0 has been tailored to counteract this.

The main new feature with ATX 3.0 PSUs is the inclusion of the 12VHPWR PCIe connector which supports ATX 3.0 and PCIe Gen5 standards. It is is capable of withstanding power failure caused by a running graphics card’s instantaneous peak power consumption, whilst providing higher stability and efficiency power output for high-end systems. 

The 12VHPWR PCIe connector (550mm)

A picture of my previous setup. I'm replacing the Corsair RM850x on the left. The one on the right is a Corsair RM750x.

The SilverStone in place. It has a smaller form factor hence cable management is easier. 

The 12VHPWR connected to the 4090. 

No more need for the infamous nVidia power adapter that came with the MSI 4090. 

The 12VHPWR replaced all these cables. Corsair PCIe 8-pins on the right that were connected to CableMod extension cables. The latter connected to the nVidia adapter that connected to the GPU. 

Booted into Windows and ran a FurMark stress test. Temperatures relatively high but FurMark is an extreme situation. Max power usage 334W, average 323W. 

Note: I've got an unusual PSU setup as I'm using two PSUs. The new one - Silverstone 850W ATX 3.0 - powers the 4090 and motherboard. The Corsair RM750x powers the CPU, fans and LEDs. All the storage units are NVMe M.2 SSDs connected directly to the motherboard. 

Edited November 2, 20223 yr by Cpt_Piett

Fantastic Cpt!  This is above my level of knowledge.

Nice little review and peek at the Silverstone.

Interesting setup with the two PSUs.

Thanks for sharing!

57 minutes ago, Jack_Sawyer said:

This is above my level of knowledge.

here you go:

https://www.igorslab.de/en/atx-3-0-at-a-glance-soap-bubble-or-revolution-what-really-is-changing/

https://www.igorslab.de/en/atx-3-0-vs-pcie-5-0-error-misunderstanding-or-compromise-with-hindsight/

"Of all the changes mentioned above, the most important are Intel’s new transient response tests, which go up to 200% of the power supply’s maximum rating. However, this test only takes 100 μs, so it will not cause any problems with most power supplies. On the other hand, the hardest transient tests are the 180% load for 1 ms and the 160% load for 10 ms. Aris expects most power supplies to fail both of these tests (and so far, unfortunately, they have)."

my previous non-ATX 3.0 power supply crashed repeatedly after installing a RTX 3090 with MSFS, but not with P3D nor x-plane, because MSFS can offload so much more computing onto the GPU which created high Ampere current overloads exceeding the PSU's rating, even if for only fractions of a second resulting in a hard pc reset.  this is what the new ATX 3.0 standard tries to resolve by forcing the power supply to deliver up to 200% of its rated normal power for only a few, but sufficient milliseconds.

Edited November 2, 20223 yr by turbomax

1 minute ago, turbomax said:

here you go:

https://www.igorslab.de/en/atx-3-0-at-a-glance-soap-bubble-or-revolution-what-really-is-changing/

https://www.igorslab.de/en/atx-3-0-vs-pcie-5-0-error-misunderstanding-or-compromise-with-hindsight/

Thanks.  Wish I had the money to afford all these items.

you don't necessarily need a new ATX 3.0 power supply for the RTX 3090/4090 graphics cards but it is recommended if you happen to get a new PSU anyway.

Well it's probably one of the weirdest threads in the screenshots section. But I thought I'd take a few pictures and write a few words. Next time I'll do a Hardware Unboxed style 4K YouTube video with narration and everything. Or maybe not 🙂

"This post un-intentionally left blank"

Edited November 2, 20223 yr by turbomax

13 minutes ago, Cpt_Piett said:

Next time I'll do a Hardware Unboxed style 4K YouTube video with narration

don't forget to include some latency here and there. or some other unrelated, irrelevant stuff that you didn't quite understand. make sure to use your best David Attenborough/BBC style intonation. 😀
 

Edited November 2, 20223 yr by turbomax

7 minutes ago, turbomax said:

don't forget to include some latency here and there. or some other unrelated, irrelevant stuff that you didn't quite understand. make sure to use your best David Attenborough/BBC style intonation. 😀
 

Lol, I promise to do that 😅 I'll even do an in-depth excruciatingly boring 20-minute elaboration on the frame time vs latency differences. And link it to a certain SimTuber's recent video. 

38 minutes ago, Cpt_Piett said:

Next time I'll do a Hardware Unboxed style 4K YouTube video

oh no, your room would be filled with hundreds of free Corsair SSDs, ASUS laptops, LG QNED mini LED TVs (4.500 $) etc, awful, just like these guys here, and instead of testing MSFS you'd have to travel (on AMDs expense) to Las Vegas by tomorrow to cover the AMD RDN 3 launch: