Matsozetex

Ok, now I'm kind of ticked off. I just (last night) ordered a GX-750 (Seasonic FOCUS Plus Gold 750) after extensive consulting of the PSU guide and review reading, all saying it was A-Tier and a great PSU. After a browser update refreshed the PSU guide it referred me to a newer version of the guide, and that guide also says that the GX is A-Tier. Then I see this thread and it tells me the FOCUS Plus Gold is garbage and I just wasted my money... WTF?!?
Is it good or not?! If it's so much junk why is it on the A-Tier list? I could have easily purchased a Corsair RMx unit (I have a RM550x in another machine), but thought I'd go with a Seasonic this time after hearing so many good things. This PSU is supposed to run my new Ryzen box (with a RX5700XT or similar) which I hope to upgrade to a 16-core in the future, so I need a solid one. Do I refuse delivery (can I do that with NE?)? or is the GX ok now?

Would probably opt for a CX 550W, for some reason, Corsair only opted for a single PCIe 8pin power cable for the 450W model.

Would probably opt for a CX 550W, for some reason, Corsair only opted for a single PCIe 8pin power cable for the 450W model.

Based on the copious amounts of information such as a parts list you've given us, you need 0 watts

At this budget you're better off getting an old workstation and making a few upgrades to it.

Not a lot of really exciting deals out there at the moment on PSU's.   It's either go budget or go all the way the $80+ range. There are two that stand out in the budget category.   The Corsair CX450 for $29 after $20 rebate and the Seasonic M12II 520 for $39 after $20 rebate.
 
https://www.newegg.com/corsair-cx-series-cx450-450w/p/N82E16817139201
 
https://www.newegg.com/seasonic-m12ii-evo-series-m12ii-520-evo-editon-520w/p/N82E16817151093
 
I think the M12II 520 is the better fit for your system, but the deal expires tonight.  The CX 450 runs for 6 more days.   If you go up to $80, the Focus 550w that mariushm recommended is a fine option at that price point.

Your comment makes no sense.  It's like saying I need a car to drive to work, I have a $500,000 budget.  Someone says a $100k car will do fine, and you say you have to spend the $500k!!!!
 
No logic there in any way shape or form.
 
You list needs, then you justify performance for what price.  You don't set a high bar and forcibly spend to reach it on things that are no benefit.

I have been trying to tell them that for a month now.  It's dead reliable.  The AK47 of power supplies. Before it was a budget PSU, it was the unit you purchased to power SLI, Crossfire, Pentium EE systems, overclocked Thuban X6,  Overclocked Core 2 Duo's and Core I7's, overclocked Bulldozer FX chips, and everything in between, all of which drew a LOT more power than today's systems do. That's where its stellar reputation came from.  Powering hard core gaming machines for over a decade and powering them reliably, just like it does today. You can't fake that kind of performance or reputation. It may not be the best PSU anymore, but it's damn reliable. Most veterans know that already.   I suspect the problem on this board is a large number of posters in their teens and early 20's who know nothing about it.

I cannot believe the sheer amount of disrespect y'all are putting on the Seasonic S12 / M12 series. I have used them exclusively for years now building PC's and have had 0 issues. My most recent build had a M12II Evo 520W powering an i9-9900k, a 1080 ti, 3 ssds, 5 fans, rgb led lighting strips, etc. just fine with absolutely no issues. I have multiple friends with similar builds and the same PSU with no issues. I have built several machines with these power supplies during my previous time of employment at a computer repair shop. 0 issues. I've had nothing bad to say about their power supplies whatsoever.
 
/rant
 
But seriously, downgrading PSU's entire tiers because of a fan bearing type or type of internal cabling or external cabling is just plain moronic. It's showing new PC builders that you need to have a $100+ power supply to get your computer powered effectively. Which is simply not true.
 
I'm not an engineer but damn it when I use a product and its been good to me time and time again, I will continue to use and even recommend the product.

222 RON : System Power 9 400w
255 RON : System Power 9 CM 400w
274 RON : System Power 9 500w
 
255 RON : Seasonic S12ii 520w
 
 
System Power 9 400w  : 3 years warranty, 32A (384w) on 12v, from which you lose some depending on how much you consume on 5v and 3.3v (up to 103w)
5 SATA and 2 molex is good for 400w
2 pci-e 6+2 connectors, but on one cable.  I'd be concerned about rail distribution ... psu has a 22A and a 18A rail ... what if use buys a second hand R9 Fury or R9 380 that consume 200-250 watts? The two connectors probably go on same rail.
Elite 85c rated primary (meh), Taiwanese Teapo SC (acceptable) and Japanese NCC KZE (very good) on secondary. Yate Loon sleeve bearing .. meh but acceptable for a 400w psu as it won't produce much heat.
Is it worth 222 RON for less than 400w on 12v (considering the 5v and 3.3v rails pull power from this 12v)?
If you add the 3y warranty, and worries about power distribution ... I'd pass... don't think the dc-dc and c6/c7 are worst passing higher wattage.
 
S12ii 520w ..
5 years warranty ...
Claims 2 x 20 A rails for 12v but it's most likely single rail (40A , 480w in total), 130w on 3.3v and 5v (24A each vs 24A for 3.3v and 15A for 5v)
Fluid Dynamic Bearing fan , all japanese capacitors inside (NCC),
Has separate pci-e cables, one with 6 pin and one with 6+2, so you get less voltage drop on cables when powering a video card that needs 2 pci-e 6/8 pin connectors
 
The Hardware Secrets review says Undervoltage protection not listed but present : https://www.hardwaresecrets.com/seasonic-s12ii-bronze-520-w-power-supply-review/9/
 
I don't see the 400 watter being better, it scores points only at dc-dc converter (but 15a on 5v? meh... try using it for a NAS with 8+ hard drives and see how that works for you) and the C6/C7 state support thing.
 

The f14lab review demonstrates high load on 12v and low load on minor deviating the 12v rail by .367v, not great performance by any stretch of the imagination, and these results are consistent with other reviews.
 
OPP of the unit doesn't even work properly, in Computerbase DE's testing, when OPP kicked in the 12v rail was as low as 8.7v.
 
So what is certain, the GB Bronze platform flops during protection tests, and cross-load testing it flops (which is expected for a group regulated units). Whilst other performance is decent, the previous two issues make it an instant no-buy for me.
 
EDIT:
 
More Seasonic GB Bronze platforms failing: https://www.techpowerup.com/review/antec-hcg-620/7.html
 
This time, the 5v rail goes out of spec on high minor rail load. High 12v rail with low minor gives a near -0,4 voltage deviation. It also fails during transient response tests.
 
I'd hate to be the one to say that x reviews are invalid, but generally the reviews that feature protections testing tend to have more weight. Because a unit can perform fine, but lacking certain protections, or those protections not working is a deal-killer.
 

Nothing gives me a chub more than group regulation units having semi-decent regulation then getting absolutely shit on cross loads.

So are you going to provide a source or just do a fanboy screech? Reee, these people hate this unit because its actually trash, how dare they insult my senpai Seasonic.
 
https://www.computerbase.de/2017-07/cooler-master-cougar-xfx-zalman-netzteil-test/
 
That is a review of the XFX XT Bronze, based on the very Seasonic GB Bronze platform the M12II used, and the original S12 used back in 2009. 
Most notably in that review is that cross loads put the voltage out of specification (i.e the every day load), and lacks OTP (and doesn't have any pseudo implementation of it).
It doesn't take a genius to understand something that is a decade old is not a good fit for modern systems, like how you wouldn't match a GTX 280 with a Ryzen 5, but I might retract that comment due to this circumstance.

To answer your first question, the S12II has been the AK47 or Chevy small block of the PSU world for the past 15 years. It's one of the most reviewed PSU's of all-time, with at least dozen pro reviews that I can think off the top of my head. It boasted an impressive reputation that played a big role in Seasonics own reputation for quality, and that reputation is well deserved.   I'm not accustomed to having to explain how good it is to people.  But I promise I will just as shocked the next time someone questions the reliability and performance of the AK47 or the Chevy small block.
 
By the way, that XFX XT isn't an S12II.  A dozen pro reviews over 15 years, remember?   I know exactly what an S12II performance curve looks like.  That one isn't even close.  In fact, its grotesquely worse than any Seasonic model I have seen tested. Even the brown box OEM models do MUCH better than that.  Either the XT isn't based on an S12II at all, XFX made significant changes from the reference design, or they just ended up with a defective unit.  The actual S12II 520 produces 3% regulation under a max 12v cross load.  The OP's unit, the M12II 620 also produces 3% regulation at max 12v crossload.  At the OP's projected load of 430w, the M12II 620 does 2% regulation on a 12v crossload. This data comes from full spectrum crossload tests for the 430, the 520, and 620 in my archives, all taken from professional reviews.  And that alone should give you an idea how much attention I pay to such matters.
 
This is why you do your own leg work instead just believing what you read on the internet..  People have agendas and biases and get caught up in group think.  You can let them do the thinking for you, or you can verify the data yourself.  If more people on here chose to verify the data themselves, I suspect the views on the S12II would be quite different.
 
Make no mistake, the S12II is an older design and there are much better PSU's out there.  I'm particularly fond of the Corsair RMx series.  But other unit being BETTER is not the same as this one being bad.  Its rugged and reliable and still makes a excellent entry level PSU if the price is right.

I probably should have warned you that there is an active group of Seasonic M12II haters on this board. I have no idea how this started, but most of them just repeat the same three talking points over and over and have no idea whether its good or not. The M12II a very good budget PSU and very reliable.  Seasonics reputation for reliability is in no small part based on this units long term performance. It has anchored their low to mid range offerings for 15 years.

The TXm is a excellent recommendation, but putting the MWE in the same category is nonsense.  Too many corners cut with components.  And just because you are old doesn't mean you aren't good.  I would take the M12II or the S12II over the MWE gold in a heartbeat.

@OrionFOTL @LukeSavenije
 
The report on the release of the unit (GD, 2019) reported the OEM as FSP from Tomshardware Computex reporting in May.

It's not the platform from Hydro G Pro.
Nor the platform from Hydro G.
Nor the platform from Hydro X.
Nor the ACRF Raider II (used in old GD, Pure Power 11, EVGA GQ)
Nor the double forward Raider II (Hydro GE).
 
Which platform it is then? Idk!

@OrionFOTL @LukeSavenije
 
The report on the release of the unit (GD, 2019) reported the OEM as FSP from Tomshardware Computex reporting in May.

@OrionFOTL @LukeSavenije
 
The report on the release of the unit (GD, 2019) reported the OEM as FSP from Tomshardware Computex reporting in May.

Until midnight tonight, the Seasonic M12II 520 is available for $40 after rebate on Newegg.  It is a FAR better unit than the EVGA BT 500 and less expensive right now.  For a $500 build, that is the route I would go, assuming you are ok with rebates.
 
https://www.newegg.com/seasonic-m12ii-evo-series-m12ii-520-evo-editon-520w/p/N82E16817151093

i wish for it... but i literally don't know anything about it as of right now
 
the old gd was a non-modular GQ

In that case go with the Corsair CX650. If the CX550 is available for cheaper than that would also do for your system. Don't go with the CX450 though as it only has a single PCIe connector.

I believe the new Neo Eco is a Focus platform based unit. 
 
Focus Plus @ Tomshardware
https://www.tomshardware.com/reviews/seasonic-ssr-750fx-focus-plus-750-gold-psu,5206-3.html
 
NeoEco @ X Fastest News 
https://news.xfastest.com/review/review-focus/44260/antec-neoeco-gold-650w-review/
 
Can't do direct image links because I'm on mobile sorry.
 

That's not future proof.  This is future proof:  
 
https://www.newegg.com/corsair-ax1600i-cp-9020087-na-1600w/p/N82E16817139226?Item=N82E16817139226
 
The Corsair AXi 1600.  Enough power for your overclocked, dual socket, quad SLI, eight drive RAID array system with enough power left to power your desktop lamp.