Is this powersupply good enough for my build?

davidocas123456789 · May 12, 2018

I don't really know alot about psu's so i decided to get some help from this forum. Do you guys think a Seasonic S12II 620W 80 plus bronze is enough for this build (will describe below) or should i go for a seasonic focus 80 plus gold 650w full modular?

PC Specs:
-Intel Core i7-8700k @ stock
-Motherboard ATX MSI Z370 GAMING PLUS
-Ram G.SKILL RIPJAWS V 16GB (2X8GB) DDR4-2400MHZ CL15 Red
-MSI GEFORCE GTX 1060 GAMING X 6G (maybe upgrading to a 1070Ti)

I think those are the specs you need to know, one more time, i don't really know about psu's.
Every help will appreciated, thanks in advanced.
If for specs are needed tell me.

Rexper · May 12, 2018

Those S12ii are low end PSUs that would provide very loose voltages to modern builds such as yours, it is also missing important protections (Over Current, Over Temperature, and Under Voltage on the 12v rail). This is a unit to avoid, especially with contemporary market.
The loose voltages leads to decreased lifespan on components, and the lack of protections may not save your components in a fault (short, surge, etc).

The Focus Plus is a much better power supply. However you don’t need 650w. A good 550w PSU will be more than enough, even with “future expansions” and save you $10.

jacobweaver800 · May 12, 2018

davidocas123456789 :

That Seasonic PSU would work, and it is still a decent mid range PSU, you could have done much worse. But I still recommend a better one, the issue is you will be dealing with a part that will be able to output hundreds of watts of power, you can obviously see the danger there, cheap PSU's often use capacitors that are denied by bigger manufacturers like EVGA, they usually are low quality or have defects and they are used by crappy PSU makers. I have heard stories of people using a PSU with enough wattage to handle a system but the PSU was off brand and it destroyed their brand new PC and burned down their house. So the moral of the story is always use good quality expensive power supplies.

davidocas123456789 · May 12, 2018

Rexper :

Thanks for the fast answer!
So if i get a Seasonic focus plus gold with 55w it will be enough?
And do you think with a build like that i should get higher mhz ram sticks? like 2800Mhz or something?

davidocas123456789 · May 12, 2018

we wont want that happening ahah what do you recommend? any good kinda cheap psu in mind?

jacobweaver800 · May 12, 2018

davidocas123456789 :

Intel doesn't benefit as much from higher memory speeds as much as Ryzen does, however it will be in your best interests to look into a 2933mhz kit of 16gb's for optimal performance. As for a good cheap PSU I recommend an EVGA Supernova 550w, they're around 60-70 dollars new, not the cheapest but they are good quality and will last for years. Or you can look at a Corsair CX 550, they are around 50 dollars new, cheaper but a lesser quality than the Supernova, still a great PSU though just stay away from the older ones as they had some issues with them.

davidocas123456789 · May 12, 2018

jacobweaver800 :

In my country there are only Corsair, Cooler Master, Seasonic, Sharkoon, Nox and LC-Power available otherwise i would have definitely picked an EVGA one.
Do you think the Corsair CX550M is good enough or should i get like the CX650?

4745454b · May 12, 2018

Those S12ii are low end PSUs that would provide very loose voltages to modern builds such as yours...The loose voltages leads to decreased lifespan on components

What?

http://www.jonnyguru.com/modules.php?name=NDReviews&op=Story3&reid=185

Looking at the CL2 test (which is worse than the #5 test) you still get an 11.92V 12V rail, 83+% efficiency, and a ripple that doesn't cross 25mv. Jump to page 5.

the scoring here isn't going to be that hard to come up with for me. This unit does 80 Plus Bronze down to load levels you'd probably never see in real life, crossloads exceptionally well for a group regulated design, and has almost no ripple and noise to speak of. While I don't know that this unit deserves the scoring of a much more expensive independently regulated design, I also cannot punish a group design just for being a group design. Group designs aren't supposed to do well in crossload testing. And yet this one did.

It's not a fire trap. If this is the best the OP can get, I suggest getting it. It's an older platform yes. But it's not a fire starter. Just because you bash and hate every group regulated PSU doesn't mean they are all garbage and should be avoided at all costs. That is also NOT loose voltage regulation. Quite the opposite actually.

So if i get a Seasonic focus plus gold with 55w it will be enough?

Assuming you mean the 550W Focus plus, yes. That's a great PSU that should serve you well. If it's in budget getting it would be a good idea.

jacobweaver800 · May 12, 2018

davidocas123456789 :

jacobweaver800 :

In my country there are only Corsair, Cooler Master, Seasonic, Sharkoon, Nox and LC-Power available otherwise i would have definitely picked an EVGA one.
Do you think the Corsair CX550M is good enough or should i get like the CX650?

A CX 550m should be plenty as it is totally capable of the 550 it advertises.

Rexper · May 13, 2018

What?

http://www.jonnyguru.com/modules.php?name=NDReviews&op=...

Looking at the CL2 test (which is worse than the #5 test) you still get an 11.92V 12V rail, 83+% efficiency, and a ripple that doesn't cross 25mv. Jump to page 5.

And your eyes decided to skip right past the crossload 1 test, where voltage is out of spec?

And on this review of the same platform voltage is loose for the 5V rail on the high load tests, and out of spec for the 12V and 5V rail in crossload. And also loose 12V on crossload 2. https://www.techpowerup.com/reviews/Antec/HCG-520/5.html

And on a real system that isn't even very modern the voltages aren't good: https://ru.gecid.com/power/seasonic_m12ii-520_bronze_evo_edition_ss-520gm2_2015/?s=1

Why bother with ancient, low end power supplies when there are much better PSUs for the same price?

And the S12ii can be a fire hazard with it's lack of protections!

That opinion you quoted from the review was made 8 years ago too... Not relavent.

Darkbreeze · May 13, 2018

The S12II and M12II units might not be the cream of the crop anymore, but they are certainly better than 99% of the power supplies sold worldwide and likely better than 95% of the units shipped in practically ANY prebuilt system you'd care to buy that isn't from a niche custom builder.

I've used maybe twenty of them in systems ranging from "mom" systems to high end units with big cards and have never had any issues or bad feedback on any of them. So far as I know, 100% of them are still going strong and I have one each of the S12II 620 and M12II 620 sitting in systems of my own right now. Older systems, yes, including a core duo and FX based unit, but they still work perfectly fine after many years.

Granted, there are much better units available currently, but you need to stop bashing units that are probably 100% the best that's available in many parts of the world, to many of our members, who don't have access to the most current and modern platforms. Remember, hundreds if not thousands of people will read each and every post you make at some later date and indicating that these are poor units is plain stupidity from a general standpoint.

Rexper · May 13, 2018

but they are certainly better than 99% of the power supplies sold worldwide

OP has already mentioned there are better parts available to them. This is a thread for OP, it may not apply to every single person in the world obviously.

better than 95% of the units shipped in practically ANY prebuilt system

OP isn't buying a prebuilt. And this is a reason why people buy custom builds.

100% of them are still going strong

And each person has properly tested the power supply using a multimeter and various loads, atleast? Because the issues of power supplies aren't always apparent to the naked eye. They won't be able to tell if their GPU died sooner than it would've with a quality power supply. And they haven't been in a situation yet where OTP or OCP is needed, otherwise there would be some problems.

These are low end units, they fail to stay within ATX specs, there is no denying that. Sure there are worse, but for most buyers there will be atleast a decent DC-DC PSU in the same price, like the Pure Power 10, Xilence Performance A+, Corsair Vengeance, Corsair CX/CXM grey, Cooler Master MasterWatt, etc.
Many PSUs can work, but are still very crappy killing the other hardware.

If someone on the other side of the world from OP wants a PSU, they shouldn't go by recommendations for other peoples scenarios...

4745454b · May 13, 2018

DB, Rexper in another thread a day or two ago admitted EVERY group regulated PSU is garbage. All of them.

http://www.tomshardware.com/answers/id-3699366/question.html#20947030

And your eyes decided to skip right past the crossload 1 test, where voltage is out of spec?

When would a PSU see such a setup? I "skipped over it" because I was talking about your odd idea about the ripple. You said, "Those S12ii are low end PSUs that would provide very loose voltages to modern builds such as yours". You don't state regulation or ripple. I'm assuming ripple because that's what damages parts like you were talking about. Ripple is sub 25mv. Regulation isn't as tight, but it's not out of spec or anything like that. Everything is in spec for a normal use system. Nothing would cause damage to parts like you said. I'm not saying it's the greatest PSU out there, I'm not saying it's the best choice for all systems. But it won't cause damage to parts due to "very loose voltages".

Darkbreeze · May 13, 2018

Yep, I get it. He simply has a dislike for group regulated units and is unwilling to admit this is why he cherry picks the less favorable test data against them.

Also, this is only a thread "for the OP" for one day, maybe two or three. It's a thread for the rest of the world for years and years to come. If you don't get that, then you're simply being intentionally obtuse. If you knew, which likely you DO, how many times somebody has started a thread or commented that "they read this or this" in another thread (SO it MUST be truth), you'd know why it's irresponsible.

jacobweaver800 · May 14, 2018

Darkbreeze :

I understand what he meant by this is a thread for the OP, yes it will be seen by other people and they will use this advice, but it is still the OP's thread. We are giving advice so that anyone should be armed with the information to pick a quality power supply for their PC. In the mean time lets address the OP's main question. Yes that Seasonic will work, it isn't the greatest but it will work non the less. There are better options out there but they will be more expensive, if you can't afford a better one get it because it will do just fine for the time being. If you can afford a better one get it since it will be worth the money. Yes the PSU is plenty for that build as it shouldn't draw a lot over 450-500 watts under full load (450-500 worst case scenario) And that 620w unit should be plenty for it, it shouldn't be in danger because your staying well under it's max capacity. As for the second PSU option listed, it will work just as good too. In this case I would get which ever you can get cheaper brand new, stay away from used ones as they may have been treated improperly or not serviced ever or may be broken and not labeled as broken.

Darkbreeze · May 14, 2018

It doesn't matter. If the OP in any given thread asks whether it's a good idea to stick a butter knife into a power outlet then even if we KNOW the OP is an otherwise fairly well informed person in electrical repairs, we are STILL going to specifiy IN the OPs thread that it should only be done with the breaker panel turned off.

Even though we KNOW the OP will do that, due to his own intellect and experience, we cannot assume that anybody who comes along after that is going to have the same level of beans in his noggin' or any common sense at all, therefore we clarify facts and express any and ALL relevant truths regarding the problem or issue, or question.

No, I have no idea why anybody would want to stick a butter knife in a power outlet, I just used that as a theoretical example of something that if not done right without all the pertinent facts, could result in a situation where a lack of accurate information leads somebody else into a bad decision. It was not meant to be taken literally, only figuratively.

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