MSI managed to release a PSU that takes the lead in my relative performance charts from the mighty Seasonic Prime Platinum 1000, and this says it all! Thanks to an advanced platform provided by Channel Well Technology, featuring digital controllers, the MEG Ai1000P PCIe 5 achieves high performance on all sections. Moreover, this unit is ATX v3.0 and PCIe 5.0 ready, and indeed it successfully passed all of my new transient response tests, where I have to load the PSU with transient loads that are double its max-rated-capacity. I recently heard that NVIDIA will ask PSU manufacturers to increase the maximum transient load from 200% to 235%, which is noteworthy.
The MEG Ai1000P PCIe 5 is a top-performance and high-quality PSU. Its price tag is sky-high, but if you look at the performance results and its part analysis, you will see why MSI priced it at 280 dollars. You won't buy a new PSU often, so investing in something reliable with good performance, that won't hold back the rest of your system's components is wise. ATX v3.0 and PCIe 5.0 compatible PSUs are not required by the NVIDIA RTX 4000 series graphics cards, and this will probably apply to AMD's upcoming products as well, but it is good policy at this point to acquire a future-proof PSU, equipped with a native 12VHPWR connector.
Notable opponents of the MEG Ai1000P PCIe 5 are the Seasonic Prime Platinum 1000, the Corsair HX1000i, and the EVGA 1000 P6. There are also the lower efficiency, but high-performance, Corsair RM1000x and EVGA 1000 G7. None of the aforementioned units are ATX v3.0 ready, and they are also not equipped with a native 12VHPWR connector, so the MEG Ai1000P PCIe 5 has those advantages until the competition updates its offerings.