Got an interesting issue. I get a hard reset at game load with the Seasonic 1200W Platinum SS 1200XP3. Total wall load spikes to 500W at crash.

I have a spare FPS Booster Power supply so I hooked up one 8 pin the the FPS Booster and one to the Seasonic and it all worked.

I know the RTX had an issue with power supplies but I don't see how a 100A 1200W PSU can't run a 750W PSU rated GPU.

This is a known issue on that old PSU with the OCP circuit and heavy transient swings. It doesn't matter what the PSU wattage is.
This circuit was also used on the X-1050, X-1200 gold units, as well as the original Prime and Focus series (before 2019). The PSU's under the OneSeasonic rework have an upgraded OCP circuit.

 

Crapola.

Any recommendation for a low cost replacement?

 

If Seasonic will not replace it, I have a Seasonic FOCUS PX 850, has done a great job for me. Not cheap, however, I don't believe in buying cheap, should be considerably less than a 1200 watt unit though. Hopefully Seasonic will replace your unit with a more modern one, their site seems to indicate a 7 year warranty, look at the bottom of the chart for Platinum
Support (seasonic.com)

 

Is the PSU still within warranty? I wonder if you could contact Seasonic about it. That’s really unfortunate. I would look at a SuperFlower Leadex. They seem to be very fairly priced as SuperFlower is looking for brand recognition in the North American markets. They have always sold PSUs under names like EVGA (when EVGA sold solid PSUs).

 

I had a ss-1050xp3 and it would crash my 3090 as well and would shut down my system in demanding games randomly, didn't matter if I overclocked the 3090 or not. Never had a problem with my 2080Ti i had before. I replacedit with a be-quiet! 1200W Dark Pro and have had no issues, have even managed to get higher stable OC on the 3090 and CPU (5800X). Highly recommend that one, but it's definitely pricey. Love not hearing the PSU fans anymore!

 

Great PSU but not exactly affordable. I'll call seasonic about an RMA but I doubt it...

 

Seasonic lied about their X series being single rail when they where in fact multi rail
Cant recall if the Platinum actually are single rail or if Seasonic lied about those as well

Sounds like it could be OCP is kicking in due to overdraw on one of the 12v rails and if that is the case the Platinum IS multi rail and thus its working like it should and there is nothing wrong with the PSU

 

As shilka states, no they won't as it's working within it's specs if it is multi rail internally.

My Prime Ultra 1000w (Gold version) handles a similar load just fine even tho it's a 3080 it's similar enough but my old 750w Focus Gold didn't. Only reason I went for such a relatively old model is compatibility with my cable mod cables for the Focus and it was on clearance and super cheap.

 

From what I'm reading, its a single rail. If its multi rail, I'll try plugging it into different connectors on the PSU to try to share two rails for the card.

 

How does this one look:
Seasonic FOCUS PX-850, 850W 80+ Platinum Full-Modular, Fan Control in Fanless, Silent, and Cooling Mode, 10 Year Warranty, Perfect Power Supply for Gaming and Various Application, SSR-850PX. - Newegg.com

 

It's the new model so "should" have no issues.

 

I recommend Super Flower. Cheaper than the Seasonic and equal or higher quality. Super Flower is pricing competitively as they build their brand recognition in North America. The 1000watt Platinum is on sale right now for $219, and the Leadex III 850watt is cheaper than the PX 850w you listed.



1000watt: Super Flower Leadex Platinum SE 1000W 80+ Platinum, 10 Years Warranty, ECO Fanless & Silent Mode, Full Flat Ribbon Modular Power Supply, Dual Ball Bearing Fan, SF-1000F14MP V2 - Newegg.com

850watt: Super Flower Leadex III 850W 80+ Gold, 10 Years Warranty, Three-Way ECO Mode Fanless, Silent & Cooling Mode, FDB Fan, Full Modular Power Supply, Dual Over Power Protection, SF-850F14HG - Newegg.com

 

Nice find .

 

Yeah, I used to love up until about 2 minutes ago. I think its up to Super Flower or the Fractal Ion+

Fractal Design Ion+ 860P 80 PLUS Platinum Certified 860W Full Modular Compact ATX Power Supply with UltraFlex Cables - Newegg.com

BTW, for those interested, I'm using the Linustechtips PSU Tier List as a guide as its been a long time since I've followed PSU reviews.

[psucultists] PSU Tier List - Power Supplies - Linus Tech Tips

 

Stick to Super Flower, imo. I used to buy EVGA when they were made by Super Flower, but at this point, I’m pretty much on Super Flower or Seasonic only now-a-days. Super Flower is just priced so damn well as they build their brand name up on this side of the world; really, really competitive pricing.

 

I'll do some more research into tonight. I don't like to "knee jerk" buy. The Fractal Design has good reviews from what I've seen and is cheaper. I'll check out Super Flower tonight. Both are "Tier I" on the PSU guide but its from LinusTechTips so I'll take that with some salt.

 

Up to you bud! I don’t trust LTT with anything, and I highly doubt Fractal is manufacturing their own PSUs—I’d venture to bet that they are rebranded by someone else; potentially Seasonic. Super Flower has been making PSUs for a long time.

 

The Ion+ is cheaper because its not as good its by no means bad but the OEM is HighPower aka Sirtec so the quality is slightly worse since they cant compared to some of the bigger names like CWT, Delta, Seasonic or Super Flower they are like FSP not bad but not the best

As for the LTT list its garbage
Also there is a Leadex V 1000 watt on the market but i have not seen reviews of that one yet so no idea how good it is

Super Flower Leadex V Gold PRO 1000W ATX 80 PLUS GOLD Certified Power Supply, Smallest 130mm 1000W ATX PSU, Patent Super Connectors, Full Modular, Ultra-Flexible Flat Ribbon Cab, SF-1000F14TG - Newegg.com

Buy Super Flower Leadex V Gold PRO 1000W ATX 80 PLUS GOLD Certified Power Supply, Smallest 130mm 1000W ATX PSU, Patent Super Connectors, Full Modular, Ultra-Flexible Flat Ribbon Cab, SF-1000F14TG with fast shipping and top-rated customer service. Once you know, you Newegg!

www.newegg.com

 

Appreciate it guys! Yes, I will look closely into both. I do like to find the OEM provider as I understand that 90% of branded PSU's share 10% of manufacturers or something like that. I'll have to weigh costs though, unfortunately, depending on how much I can get for the Seasonic. I have a tight budget allowed by the Mrs and I kind of blew it with the 3090...

 

Other than TwoCables there are no one else left on this forum that knows as much as i do so if you want to know about which OEM made what feel free to ask its probably faster than you using google

I have a 750W Seasonic Focus Plus running a 3080. Anything I should be concerned about?

Only if you have an early model Focus FX and not the newer GX

 

Ion+ Platinum* has the nicest cables on the market, outside a few fringe/much more expensive PSUs. Very soft and malleable, really nice to work with and cable manage, that's the main advantage.

 

The Seasonic PX-1000 works perfectly with a shunt modded 3090 FE, no shutdowns.
The TX-1000 and GX-1000, all are which the OneSeasonic rebrand, should likewise be fine.

I don't know the difference between the 1050W "SS-1050XP3" but I do see that the back I/O PCIE ports are 8 pins. My old PSU on a backup system is the Seasonic SS-1000XP Platinum, which has that old 12 pin (2x8 pin into 12 pin) PCIE port setup on the back, and I did NOT test that at all with the Ampere. I didn't have any shutdowns with the Vega 64 on it though.

 

I just got home and tried two things (at the same times so I don't know which one worked. I moved one of the PCI-E cables to another connector on the PSU and I plugged in old EVGA PCI-E Power Boost into one of the empty PCIx1 slots and now its working fine.

I'm leaning towards the PSU being multi rail at this point and moving the PCI-E cable was what did the trick but not sure. Either way, no new PSU needed (yet)!

 

This has been my recent go-to source when power supply shopping now that JonnyGuru isn't reviewing anymore:

Cybenetics Labs – PSU Efficiency & Noise Level Certifications

www.cybenetics.com

Lots of good info, especially their fan noise vs load graphs.

Regarding your issue, welcome to Seasonic. My EVGA PS 1000w (Seasonic based unit) did the exact same thing when I got my 2080 Ti. If I increased the power limit beyond stock on the card, it would trip OCP at ~500w AC power draw. Having intentionally bought what I felt was a "way overkill" power supply so that I'd never have to upgrade it again, I was furious when it failed to run a single GPU build at 50% load because of their incompetently designed OCP circuitry. They've supposedly addressed the issue on newer models, but I'll never be purchasing anything from Seasonic again after that debacle.

 

I think the Seasonic Platinum is dual rail. Been running fine so far; I'll report back if I'm having any further issues, thanks everyone for the help!

 

Not sure why this turned into debate on single vs multi rail. The issue is the OCP. There has been no evidence or reports of the Prime models of Seasonic being multiple rails. I know they were caught lying about it before but that was then and this is now. It's over protective OCP.

Not how checking would cost a fortune, just found this thread on it and seems like it's not that expensive. Just not easy

The PSU "rail" checking guide.

This is a thread dedicated to check how the 12V and 5V cables are connected on your PSU and if it is actually a dual rail like the manufacturer claims it to be. First a list of the tools you will need. 1. Tools:- A multimeter(specification afterwards) tweezers some masking tape some...

www.techpowerup.com

 

Not sure why this turned into debate on single vs multi rail. The issue is the OCP. There has been no evidence or reports of the Prime models of Seasonic being multiple rails. I know they were caught lying about it before but that was then and this is now. It's over protective OCP.

Not how checking would cost a fortune, just found this thread on it and seems like it's not that expensive. Just not easy

The PSU "rail" checking guide.

This is a thread dedicated to check how the 12V and 5V cables are connected on your PSU and if it is actually a dual rail like the manufacturer claims it to be. First a list of the tools you will need. 1. Tools:- A multimeter(specification afterwards) tweezers some masking tape some...

www.techpowerup.com

I could be wrong but when I moved one of my PCI-E cables to another connector, the PSU didn't shut off anymore which leads me to believe its uses multiple rails? However, I also installed my old Evga Power Booster into one of the empty PCI-E slots so I don't know what fixed the issue.

If I have the time, I might use this to check my PSU but for now I'm just happy its working.

 

Some of the cables are changed on the OneSeasonic models. Also some models have daisy chained PCIE cables removed completely and ports added on the backside (all of the Prime series, e.g. TX, PX, GX Prime).

The base PSU model name type on the back hasn't changed, but the branding name is different. Also all cables are interchangeable between the OneSeasonic brands afaik, except the daisy chained cables.

OneSeasonic

seasonic.com

 

Now I start to wonder what specific model series my PSU is. It's the Prime Ultra 1000w Gold one that I bought on clearance for like €140. Is that already a OneSeasonic model?

I mean, it's been great so far the past year and a half and took everything I threw at it including the 2080 Ti with 2000w XOC BIOS pulling 500+w without any issues other then slightly warm to the touch PCI-E cables (yes I do use separate cables, not 2 connectors on one cable) and now with the 3080 and 10900KF @ 5.3 all core and the massive amount of fans and RGB it still runs like a champ and barely even gets the fan spinning in hybrid mode but yeah, curiosity gets the better of me now.

 

If it says "Prime Ultra Gold" it's not the Oneseasonic model.
If it says "Prime GX-xxx" then it is the OneSeasonic model.
The "Prime Ultra Gold/Platinum/Titanium" is the old branding.
Prime GX/PX/TX is the new branding.

 

As mentioned, one of the benefits of Prime GX, PX is the non-daisy chained separate PCI-E cables for GPUs, for instance 750w models have 4 of those.

Also it's really bad to use daisy-chained on Superflower PSUs that have their signature hex plug at the PSU itself, because it can't handle high wattage 3090 GPUs (on previous versions they used cables with inadequate AWG). Unless they changed something for Leadex V Gold Pro it's gonna cause problems like the Leadex II and III models. So without a review I'd actually feel safer with a Leadex V Gold Non-Pro model.

To summarize, best from left to right (within same column = equal):

Nicest cables	Ion+ Platinum	Leadex V Gold Pro	Prime GX/PX Focus GX/PX Leadex V Gold(non-Pro)
Highest quality cables and no daisy-chain (best for ~3090)	Prime GX/PX	Ion+ Platinum GX/PX (non-Prime) Leadex V Gold(non-Pro)	Leadex V Gold Pro
Most Compact	Leadex V Gold/PRO (130mm depth)	Focus GX/PX(140mm depth up) Prime GX/PX (140mm up to 750w)	Ion+ Platinum (150mm depth)	Prime GX/PX (170mm 850w and above)
Relative Silence (biggest fan within the smallest box)	Prime GX/PX (135mm fan within 150x140mm box)	Ion+ Platinum (140mm fan within 150x150mm box)	Leadex V Gold/PRO (120mm fan within 150x130mm box)	Focus GX/PX (120mm fan within 150x140mm box)
Absolute Silence	Prime PX	Ion+ Platinum	Leadex V Gold Leadex V Gold Pro Focus GX/PX Prime GX
Warranty Length	12 Years (Prime GX/PX)	10 Years (the others)

That's about it for secondary comparable metrics, hopefully, it helps with the decision xD

 

Welp, Seasonic shut down twice. Newegg made the decision for me. Super Flower is on sale for 119 until tomorrow so got that.

Thanks again for everyone's help!

 

Please post thoughts on it! $119 is such a great price.

 

My Leaxex-based EVGA Supernova 1200 P2 was $200 shipped, but likely due to slave labor at Super Flower. I would gladly pay more for a PSU made by people paid a living wage.

 

Maybe you will gladly pay more for PSU made in US or any other developed country but most of people wouldn't pay double of price for same PSU made by same company etc

Most of PSU are made in China, Taiwan and same applies for GPUs or CPUs, off course companies can change manufacturing or making them in USA or EU etc but I think by doing that prices would be probably double of that what we are currently paying

I have Superflower 8pack 2000w PSU, I remember I paid for that PSU £220 and that time I thought so its just overkill and I wouldn't use it at full potential,how I have been mistaken by this hahaha

Hope this helps

Thanks, Jura