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Discussion Power supply / PSU models - What to buy, what to avoid - And PSU discussion thread

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Juular

Upstanding
Mar 14, 2020
448
91
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What about the Seasonic Core Gold GM500? Some guy said it's not of good quality because of "singlesided pcb and the sleeve bearing fan", but the warranty is 84 months and this and LTTs tier lists contradict him.
Apparently, it's a Focus platform downgraded with single-layer PCB (which is okay by itself) and most likely some components downgrading going on too. But there are no reviews to judge it's performance, although since it's generally cheapest than most decent alternatives, at least now with all this pandemic havoc going on, it's not a bad choice.
 
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Darkbreeze

Titan
Moderator
Apparently, it's a Focus platform downgraded with single-layer PCB (which is okay by itself) and most likely some components downgrading going on too. But there are no reviews to judge it's performance, although since it's generally cheapest than most decent alternatives, at least now with all this pandemic havoc going on, it's not a bad choice.
And I can agree with this. And to expand on that, somewhere in here there is an actual exchange of information between Seasonic and one of our members in which Seasonic specifically states that the Core series is their "builder" level unit now, to be considered below the Focus and Focus plus units but above the S12II and S12III models. So, much better than garbage but probably not what most users are looking for when trying to source a typical Seasonic offering.

I also agree though, that currently, you're lucky to even find ANYTHING that isn't a piece of trash OR if it's not one, isn't being sold for a premium that is 50 bucks or more above what it would normally sell for as of last November or December prior to things beginning to go off the rails.
 

Darkbreeze

Titan
Moderator
I sent an e-mail to Seasonic about Core series, including possible replacement with Focus series, and Seasonic rep had this to say:
The main purpose of the CORE series is for system builders where fewer connectors and lesser performance are needed and the price point more important.

The FOCUS is our most popular series and a great performance power supply and will continue to be an important part of our power supply offering for the foreseeable future.
While i also asked about the availability of the Core series location wise, i didn't get answer to that.

Though, the new Core series are part of the TUF Gaming Alliance and it looks like it's a special edition PSU, made in conjunction with Asus.
 
Jul 1, 2020
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Hi, nice list. You didn't mention Bitfenix though and I'm kind of curious because I'm thinking about getting the Bitfenix Formula Gold 550W, which seems a good option at $75. Someone recommended it to me and the 450 version has a very decent review by toms hardware, and people seem to call it a good line of PSUs.
 
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Hi, nice list. You didn't mention Bitfenix though and I'm kind of curious because I'm thinking about getting the Bitfenix Formula Gold 550W, which seems a good option at $75. Someone recommended it to me and the 450 version has a very decent review by toms hardware, and people seem to call it a good line of PSUs.
I have heard a lot of positive things about the formula and whisper m models from Bitfenix.

Not sure on the reliability of this review, but this is one i found:
https://www.thefpsreview.com/2019/09/23/bitfenix-formula-gold-550w-power-supply-review/7/
 
I bought the EVGA BR500 for $50 with free shipping brand new, which I was surprised about since it's actually below the MSRP of $55 Tomshardware lists. Has dual PCIe 6+2 pins and sleeved black cables which is nice for this price.

It's hard to come by fairly priced PSUs anymore, just look at the other options at $50
https://ibb.co/dcxHMBb

The BR500 is currently powering a machine with a 2600k and a 2060, has no issues at all. Over the last 2 days, I played through the entire 2013 tomb raider (Steam says 18hr played but I think 1hr of that was previously logged) and it never skipped a beat.

I even clocked the 2600k to 5ghz with an unsafe level of voltage and overclocked the 2060 a bit and the PSU had no issues.
 

Juular

Upstanding
Mar 14, 2020
448
91
290
16
Not sure on the reliability of this review, but this is one i found:
What about these ?
https://www.tomshardware.com/reviews/bitfenix-bf450g-power-supply,5614.html
Does anyone know how different the EVGA BQ and BR are?
EVGA BR is apprently made by HEC, very similar platform to EVGA B 700W (lower wattages are different), be quiet! System Power 9, Cooler Master (just) Masterwatt and Corsair CV 650W (lower wattages are different).
Now EVGA BQ consists of three different platforms, sub 600W are Andyson M5, double forward with DC-DC, also used in Aerocool KCAS Plus, very meh stuff. 650/750W are the same platform EVGA BR most likely with some component changes and 850W is HEC too, similiar but a bit more robust platform (didn't see it being used anywhere but Aerocool KCAS M 850W).
Downline, EVGA BR isn't a terrible unit if it's cheap enough (which 50$ qualifies for IMO) but there are no reviews on it and i'd refrain to power anything but the very budget builds with it.
 
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King_V

Distinguished
And I can agree with this. And to expand on that, somewhere in here there is an actual exchange of information between Seasonic and one of our members in which Seasonic specifically states that the Core series is their "builder" level unit now, to be considered below the Focus and Focus plus units but above the S12II and S12III models. So, much better than garbage but probably not what most users are looking for when trying to source a typical Seasonic offering.

I also agree though, that currently, you're lucky to even find ANYTHING that isn't a piece of trash OR if it's not one, isn't being sold for a premium that is 50 bucks or more above what it would normally sell for as of last November or December prior to things beginning to go off the rails.
Any chance this info can be inserted in the original post in the Seasonic section?

(you know, like you REALLY needed someone to ask you to do more work o_O)
 
There was a basic review of the seasonic core GC500 here. It's in russian, but we all know how to google translate I'm sure. Any opinions? (Was this "review" posted somewhere already? idk)

IMO, the heatsinks look a bit light, but the OTP is set at 625W for the 500w unit. The tan fiberglass pcb is to be expected as a budget unit, it's still ugly regardless. It's still a llc half bridge, so I'm sure it's not terrible. I'm mostly uneducated about the vast world of power supplies, forgive my ignorance.
 

Darkbreeze

Titan
Moderator
You don't sound ignorant to me, compared to the majority of people who come around asking about power supplies, so give yourself a little credit at least that you're able to understand some of the advanced concepts involved with the platform components.

There are really no reputable reviews of the Core series and because Seasonic themselves have already said that these are a "builder series" unit we can assume that they probably slot in for Seasonic much as the VS or CV units slot in to Corsair's product stack which means, they are not time bomb dumpster fire type units but they are not anything that anybody would want to have to use with their 200 dollar motherboard and 300+ dollar graphics card. Beyond that, for most people, the details probably don't even matter that much. Who really cares beyond the point where the question "is this unit suitable" has already been answered with a big fat no.
 

King_V

Distinguished
And I can agree with this. And to expand on that, somewhere in here there is an actual exchange of information between Seasonic and one of our members in which Seasonic specifically states that the Core series is their "builder" level unit now, to be considered below the Focus and Focus plus units but above the S12II and S12III models. So, much better than garbage but probably not what most users are looking for when trying to source a typical Seasonic offering.
There are really no reputable reviews of the Core series and because Seasonic themselves have already said that these are a "builder series" unit we can assume that they probably slot in for Seasonic much as the VS or CV units slot in to Corsair's product stack which means, they are not time bomb dumpster fire type units but they are not anything that anybody would want to have to use with their 200 dollar motherboard and 300+ dollar graphics card. Beyond that, for most people, the details probably don't even matter that much. Who really cares beyond the point where the question "is this unit suitable" has already been answered with a big fat no.
Wait . . I'd kind of assumed that Core was a little better than that, but maybe it was just me reading too much into this. I mean, the S12II is generally accepted as "rock solid, but an old design" no?

I mean, I know the S12III so far is a big fat "nope," but if someone was building a PC, say gaming, mid-level stuff, but definitely using an add-in GPU, and they were stuck between choosing the S12II, or the Core, what would you recommend?
 
The core SEEMS to be a cut-down focus, at least to me. It seems to be a far better unit than a S12ii/M12ii.

From what I understand the S12ii was generally well built and has a lot of pros. It uses mostly Japanese 105c capacitors and a fluid dynamic bearing fan. Also, it is 80+ bronze efficient, has active PFC, and has a 5 year warranty. Those features are better than many modern budget PSUs.
https://www.hardwaresecrets.com/seasonic-s12ii-bronze-520-w-power-supply-review/5/
But it's about a decade old, group regulated (no dc-dc) and lacks a lot of modern protections. I believe due to its lack of uvp protection and being group regulated, it can have voltages go out of spec in a modern PC where the 12v rail is loaded far more than any other rail. This can cause issues.

I have used a M12ii 520GM semi-modular PSU in a PC a few months ago. The PC was nothing fancy, sporting an i5 3550 and a GTX960, but the PSU never gave me any trouble, even though this particular one was likely produced 5+ years ago since it was semi-modular, unlike the newer fully modular M12ii evo. Meanwhile, I have a CX600 that is roughly the same age that was DOA thanks to a failed Chinese cap, unlike the nicer Japanese ones in the M12ii.

The Core GC seems to have a lot of pros. 80+ gold. 7-year warranty. LLC Resonant with DC-DC. Uses mainly Japanese 105c capacitors. A modern protection set. Looks like a high-end PSU from specs sheet. The review says it's performance is good.
https://occlub.ru/testodrom/42914-seasonic-core-gc-500-i-gc-650-obzor-100-bjudzheta-kuda-nuzhno
However, one point to the S12ii/M12ii is that the Core uses a cheap sleeve bearing fan rather than a longer-lasting fluid dynamic bearing found in S12ii/M12ii. Luckily if this fan fails It will be covered by the 7-year warranty. Also, the Core GC seems to use a single layer PCB, which isn't really an issue, but it is a way to cut costs.
 
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Reactions: King_V

Rogue Leader

It's a trap!
Moderator
Wait . . I'd kind of assumed that Core was a little better than that, but maybe it was just me reading too much into this. I mean, the S12II is generally accepted as "rock solid, but an old design" no?

I mean, I know the S12III so far is a big fat "nope," but if someone was building a PC, say gaming, mid-level stuff, but definitely using an add-in GPU, and they were stuck between choosing the S12II, or the Core, what would you recommend?
I'm no expert but I'd use the Core. The S12 is ancient in PSU terms.
 
Reactions: King_V

Darkbreeze

Titan
Moderator
Well, like I said, there are no reviews, so I guess it can go either way. Seasonic themselves, as noted elsewhere in this thread, are the ones who said that the Core units are "builder" series models and to me a builder series is about equivalent to a VS or an older CX, maybe a plain box style older Seasonic. If they are better than any of that, then Seasonic should revise their terminology to not call them builder quality units OR everybody else should INCREASE the quality level of what their builder quality units consist of.
 
Reactions: King_V

Darkbreeze

Titan
Moderator
Any review that I can't read without a translation, doesn't get read. Period.

Sorry Russia. Sorry China. Sorry, whoever else that applies to. That's just the way it is. Aris is not a native English speaker and he is able to speak and write in English to convey his reviews and data, so can most all of the people on the JG forum who do reviews in other countries, most of whom are not native English speakers either, so if somebody wants to be considered relevant and credible, and want the majority of the communities to bother with reading their reviews, they can learn to do so as well OR at the least have it done. Even so, I really have no interest in visiting links that end in .ru.

To much history there with unsavory behavior from those kinds of websites AND I don't support a country that limits their entire population to an intranet.
 

King_V

Distinguished
Well, like I said, there are no reviews, so I guess it can go either way. Seasonic themselves, as noted elsewhere in this thread, are the ones who said that the Core units are "builder" series models and to me a builder series is about equivalent to a VS or an older CX, maybe a plain box style older Seasonic. If they are better than any of that, then Seasonic should revise their terminology to not call them builder quality units OR everybody else should INCREASE the quality level of what their builder quality units consist of.
Given the gold rating (I know, it's just efficiency) and the 7 year warranty, I would guess that it's Seasonic creating a new level for "builder" quality. Given how crappy some "builder" stuff is, I'd say this is a very positive thing.

Any chance of getting a review of it on Tom's Hardware? I'd love to see Aris's take on the Seasonic Core.
 
Reactions: Phaaze88

Darkbreeze

Titan
Moderator
I don't understand why nobody has done a review yet if they are any good. Why has Seasonic not sent out review samples to reviewers? Why have reviewers not used review sample funding to purchase them, not even one single one? They've been out for a while now, no reason I can see. There MUST be something more going on IMO.

Gold and warranty don't REALLY matter. We've seen a LOT of units with both gold (Or higher) and long warranties before that weren't very good. Just look at the EVGA NEX Supernova G1 units. They did not do well in reviews, especially not considering the cost of those units compared to other much better models, but had both Gold ratings AND a 5+5 year warranty (Extra 5 years if you registered it within 30 days of purchase). A score of 8 for performance on JG for the 650w G1 tells us a lot. Not terrible, but not good either.

I suspect that there has to be some reason why Seasonic has not sent review samples out considering these have been out since early 2019. Even some of the older CX units had reviews, as have many MUCH lower quality models.
 
Reactions: King_V

Darkbreeze

Titan
Moderator
Yes, I've heard of it. I've used it. It sucks. Just check the JG forums if you want evidence of it. Even the foreign speaking PSU review guys over there can't stand it, and there are actually discussions about it on their forum. Google translate likes to mangle The mask's reviews in particular.

But regardless, there is no compelling reason for me to have to ever go visit a Russian or Chinese website to read a review. If the manufacturer wants me, or most users, to ever read a review of their product, they will make sure it gets into the hands of the sites and reviewers that will do so and provide a review in English. If they don't, then frack 'em, I didn't want to buy or recommend their unit anyhow.
 

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