Question PSU: MSI MPG A850G PCIE5 or Super Flower LEADEX PLATINUM SE 1000W

[PunkHooligan]

MSI's PSU page says it holds up during Power Excursions:

https://imgur.com/a/eJKEiCh

View: https://imgur.com/a/eJKEiCh


Super Flower PSU has the same feature or is it some kind of protection ?

Money isnt the question here, because I can buy both PSUs for the same price right now and I'd like to get SF, but I wanna hear opinions first.

Spoiler: Backstory

Sorry for grammar.

Rig:

Msi b450 tomahawk max

Ryzen 3700x+noctua dh-15s

Rtx 4070 ti super, 3 separate cables to 12vhpwr.

Psu - Seasonic X series SS-750km3 (750w gold, old model)

32 gb ram

Case - lancool 216

1 hdd drive, 2 sata ssd, 1 m2 ssd

Win 11, latest build

Just bought 2k 27" monitor. Played risk of rain 2 with my friends. Then ran benchmarks in rdr 2, cyberpunk. I had my card undervolted a bit, CP77 didnt like it, reverted to stock. Ran benchmark with path tracing, dlss, frame gen, full package. Proceeded to play. Temps of gpu and cpu were 60-67c. Gpu load 100%, cpu 40-60%. Power draw gpu ~245W, cpu ~60W. After several minutes in game pc shut down again. Next time faster, next time during intro screens. When psu's protection (allegedly) works, I cant turn on pc again, without turning off outlet for at least 15 sec. Then it turns on like nothing happened.

A little backstory. Ran ghostrunner 2 max settings on previous 1080p 24" screen with no issues.

Ive tried flashing fresh bios, changing power plan, using max performance mode in Nvidia control panel. No luck. Now pc shut it down on cp77 loading screen, in DBD lobby. I can browse internet, watch youtube, play smth very light, indie.

Probably important note. I'm from Ukraine, we have power outages often. Recently I also bought brand new Samsung 990 pro 2tb nvme ssd. Installed it. Maybe I did smth wrong but after outage, when electricity was back, pc would flash for a sec, then turn off and start only after mentioned above outlet turn off. Then playing games from my new ssd, everything freeze at one moment (it was again risk of rain 2 on stage transition), steam will show errors, when trying to verify game files integrity or opening other games, installing games on ssd. Then the disk disappear from the windows. Not showing up in bios upon restart. Thought maybe i f'd up connection or smth. Reinstalled disk, showed up again, games were still there. problem with starting pc after outage gone. The next day the same thing, same game, this time I tried to turn off pc, outlet, power back on - disk showing up. Downloaded Samsung magician, no firmware update, no errors, all good. Moved RoR2 to hdd. Didnt have issues for some time, but recently was playing Dead by Daylight, installed on SSD and the game froze on the loading screen. Couldnt alt tab or switch to another window. Was able to log off, then return to windows and the disk was visible.

Will provide any additional info if required.

 

[Aeacus]

MSI's PSU page says it holds up during Power Excursions:

Super Flower PSU has the same feature or is it some kind of protection ?

Well, you could say that it's more like protection, but in reality, it is the spec of ATX 3.0.

It means, that for a short time (100μs) PSU must be able to deliver the double of it's rated wattage. So, for 850W unit, it would be 1700W for 100μs and for 1000W unit, it would be 2000W for 100μs.
μs = microsecond.

Further reading about ATX 3.0 standard: https://hwbusters.com/psus/intel-atx-v3-0-specification-explained-briefly/

Money isnt the question here, because I can buy both PSUs for the same price right now and I'd like to get SF, but I wanna hear opinions first.

Between the two, i'd go with Super Flower unit every day of the week.

Super Flower, Seasonic and Flextronics make up the 3 best PSU OEMs in the world and their high-end PSUs are also regarded as one of the best PSUs out there.

E.g, i'm personally running Seasonic. Currently 2x PRIME TX-650 and 1x Focus PX-550, but in the past: S12II-520 and M12II-850 EVO as well.

Btw, your current Seasonic X-series is also a solid unit, albeit now quite old and would need replacement.
Fun fact: Seasonic X-series was the world's 1st 80+ Gold rated PSU.

Here's also an article listing best 1000W ATX 3.0 PSUs,
link: https://hwbusters.com/best_picks/best-atxv3-pcie5-ready-psus-picks-hardware-busters/5/

And in same article, there are actually many wattage ranges, e.g 850W units,
link: https://hwbusters.com/best_picks/best-atxv3-pcie5-ready-psus-picks-hardware-busters/4/

You do not find MSI PSUs there, since MSI PSUs aren't that good, especially compared to the industry old timers (which Seasonic and Flextronics are).
MSI does make good MoBos and GPUs though. Even i have MSI MoBos and GPUs in use (and MSI monitor too). But their PSUs aren't that great, especially when you can buy Seasonic or Super Flower unit.

Btw, to combat blackouts, i'd also look into buying an UPS.
If you want more info about UPSes and which one to buy, let me know. I'll post the info with my next reply.


Слава Україні! 🇺🇦
Greetz from Estonia! 🇪🇪

 

[PunkHooligan]

Well, you could say that it's more like protection, but in reality, it is the spec of ATX 3.0.

It means, that for a short time (100μs) PSU must be able to deliver the double of it's rated wattage. So, for 850W unit, it would be 1700W for 100μs and for 1000W unit, it would be 2000W for 100μs.
μs = microsecond.

Further reading about ATX 3.0 standard: https://hwbusters.com/psus/intel-atx-v3-0-specification-explained-briefly/


Between the two, i'd go with Super Flower unit every day of the week.

Super Flower, Seasonic and Flextronics make up the 3 best PSU OEMs in the world and their high-end PSUs are also regarded as one of the best PSUs out there.

E.g, i'm personally running Seasonic. Currently 2x PRIME TX-650 and 1x Focus PX-550, but in the past: S12II-520 and M12II-850 EVO as well.

Btw, your current Seasonic X-series is also a solid unit, albeit now quite old and would need replacement.
Fun fact: Seasonic X-series was the world's 1st 80+ Gold rated PSU.

Here's also an article listing best 1000W ATX 3.0 PSUs,
link: https://hwbusters.com/best_picks/best-atxv3-pcie5-ready-psus-picks-hardware-busters/5/

And in same article, there are actually many wattage ranges, e.g 850W units,
link: https://hwbusters.com/best_picks/best-atxv3-pcie5-ready-psus-picks-hardware-busters/4/

You do not find MSI PSUs there, since MSI PSUs aren't that good, especially compared to the industry old timers (which Seasonic and Flextronics are).
MSI does make good MoBos and GPUs though. Even i have MSI MoBos and GPUs in use (and MSI monitor too). But their PSUs aren't that great, especially when you can buy Seasonic or Super Flower unit.

Btw, to combat blackouts, i'd also look into buying an UPS.
If you want more info about UPSes and which one to buy, let me know. I'll post the info with my next reply.


Слава Україні! 🇺🇦
Greetz from Estonia! 🇪🇪

I can't thank you enough for your kind help !
Know about Seasonic and Super Flower, but didnt hear about Flextronics yet.

Previously asked regarding power excursions at several web sites and no one could explain me that it's ATX 3.0 spec. Bow before you, sir.
Also I've read the article and it was helpful.
I've got another tier list from UA site and from Reddit:

PSU Tier List rev. 17.0g - Cultists Network

PSU Tier List will help you to choose the best PSU out of hundreds of models on the market. From budget to the highest end Power Supplies.

cultists.network

Right now checking Tier List you provided and also the prices for these models.

Some time ago I've found Leadex II SF PSU. Seller used it for 4090. And I asked why to sell, if it ran perfectly. The answer was - swap to ATX 3.1 PSU.

I wanted that Super Flower leadex se platinum PSU badly but now understand that the problem may be a bit deeper. If I got this right, manufacturer website states it has 12V ATX 2.2 , which released in 2005 and there were 7 more revisions before 3.0.

I can buy it from, let's say, our version of US' Ebay. So won't be able to return it, only resell if it won't fullfill my system's requirements. Wanna choose carefully.
You recommend this PSU ? Btw, maybe it's important, my card is RTX 4070 ti super Zotac Trinity OC and has 3x8 pin ==> 12vhpwr connection.