Is it really happening?
Is it really happening?
That is true. The PX-1300 came out in 2019, but there was no PRIME Platinum 1300W model. The biggest Power Supply in that line is the 1200W version, which was released back in 2016. You can look at their full lineup here: https://seasonic.com/prime-platinum/. The Ultra series started coming out in 2017. In 2019, Seasonic changed how they named everything under OneSeasonic, and here is the link to that announcement: https://knowledge.seasonic.com/article/7...neseasonic. Starting from then on (in 2019), all their PSUs had new names like GX, PX, or TX. So when you see a claim about a specific model today, why don't I check the sources to show where it comes from? Since what you think is true doesn't automatically make it real just because you believe it (unless you are an Ork from Warhammer 40K who believes something becomes real through the power of the Immaterium by your psychic ability). Otherwise - No. There is no ATX 3.x PX-1300. The PX-1300 is actually a standard ATX 2.x model. You might have mixed up the PX-1300 with the PX-1600, because for the PX-1600 there are two versions: one that uses an ATX 2.x interface here: https://seasonic.com/prime-px/, and another that uses a newer ATX 3.x interface here: https://seasonic.com/atx3-prime-px/.
I will go with what I know as fact and show some pictures of old power supplies against new ones. Here is a review of an older Prime PX-1300w Power Supply from 2021 that was different from the newer ATX 3.0 version which comes with a 12VHPWR cable. Did you see the green circuit board on the side where the cables go? The newer ones use gray or black boards in the same spot. Here is an unboxing video of the so-called non-existent Seasonic PRIME Platinum 1300w PSU, even though it is in Spanish. Notice how it says Prime Platinum at the bottom right. I have a screen capture from that link listed first. The PX-1300w you linked on the Seasonic site comes with a 12VHPWR cable. That means it is ATX 3.0 specced, according to me. The ATX 3.0 standard came out in 2022 and one big thing about it was the 12VHPWR cable and the ability for the power supply to push out what the computer needs. A specific version of the PX-1300w that had this 12VHPWR cable is the one I am unsure of when first released. Some time in 2022 or 2023 is what I suspect, and that is the version shown on the Seasonic website today. Seasonic just covers up all their pages for legacy versions/variants so they can update things, which makes it impossible to find official info about them there.
Well, for PX-1300, the 12VHPWR cable is just a late add-on. But that doesn't make the PSU itself ATX 3.x, instead PSU is still ATX 2.x. Also, that much is said on the specs page: In a similar sense, if i take official Seasonic certified 12VHPWR cable and plug it to my PRIME 650 Titanium, from 2016, it doesn't magically make my PSU ATX 3.0. It still is ATX 2.5. Or is it not? If there is a will - there is a way. Wayback machine, from March 26, 2019, link: https://web.archive.org/web/201903261410...w-platinum About green PCB; Before name change (named PRIME 1300 Platinum), the PCB is green (seen from wayback machine specs pics and hardly in the unboxing video you linked). After name change (named PRIME PX-1300), the PCB is also green (seen on PX-1300 specs page + review you linked). Where do you see the black/gray PCB? With the data you shared, the timeline of that PSU is: 2019 - Initial release of the PSU. Model: SSR-1300PD Active PFC F3 (PRIME 1300 Platinum) 2019 - OneSeasonic, renaming of PSUs. Model: SSR-1300PD Active PFC F3 (PRIME PX-1300) 2022 - Addition of 12VHPWR cable to the PSU. While PSU still is ATX 2.x. I initially thought that Seasonic didn't release the PSU with old name, but i guess they still managed to produce some 🤔, before moving on to the new name. (Nice to know that now.) Still, the unit itself (innards) is still the same. Just renaming the PSUs also is evident by other PSUs Seasonic had in 2019. E.g: 2017 - Initial release of: SSR-1000TR (PRIME Ultra 1000 Titanium) with green PCB. Review: 2019 - Rename of PSU: SSR-1000TR (PRIME TX-1000) with green PCB. Review: https://tech-legend.com/reviews/seasonic...tx-1000/2/ 2022 - Addition of 12VHPWR cable to the PSU. While PSU still is ATX 2.x. Now, if PSU would truly be ATX 3.x, then it would so say on the tin (both the specs page and on part number). E.g SSR-1600TR (PRIME TX-1600), review: SSR-1600TR2 (PRME TX-1600 ATX 3.0), review: https://www.techpowerup.com/review/seaso...3-0/3.html Or when there are slight changes to the platform, the PSU part number also changes. E.g SSR-650TD Active PFC F3 (PRIME 650 Titanium) SSR-650TR (PRIME Ultra 650 Titanium) But renaming only changes model name, keeping part number same (since innards are same); SSR-650TR (PRIME TX-650)