Is my power supply good enough?

[IkusaTakuma]

I recently upgraded some 15-year-old's gaming rig, his parents got the GPU for his birthday, but don't trust him to upgrade the system himself (even though it's REALLY easy) so they paid me $50 to do it. He upgraded from a GTX 1070 (non-TI) to a 1080 Ti (that kid really should have waited until the 1100 series Nvidia GPUs come out but whatever). The parents said that it would be a pain to sell the spare 1070 GPU, so I can keep it. I mean, they're wrong, and that's a huge waste of money to just give a GTX 1070 away like that, but not that I'm complaining. I love my job :)

Of course, this is awesome, cause that means I got an upgrade for my current system. I only got a 1080p monitor but when you get free PC parts, there's no such thing as overkill. However, I never built my PC to run such a powerful GPU, my power supply only has 550W rating (which currently powers my i7 6700k, 16GB DDR4-2400Mhz, and GTX 1060 3GB).

is a 550W power supply enough for a 1070? or is it worth 50 bucks to upgrade the PSU?

[🦊Λℚ𝓤ΛƑΛᗯҜᔕ🦊]

引用自 Monk：

500w will be plenty to overclocked with and there really is no 'danger' these days, at worst a capacitor pops, you get a horrible smell and replace the PSU.

It won't 'pull more power' than its rated, especially given the components, with that said, you can get good quality gold rated psu's in the 500-600w range fairly cheaply, so if it gives you peace of mind, it's worth it I guess.

As for 1440p, depending on the types of games, the 1070 should be good for 60fps solid in the majority of games with things turned up, but I wouldn't go aiming for high refresh rates outside of eSports games

Actually if you look in the review test I posted up there, with power supplies with non-functioning (or non-existing) overcurrent protection, they demonstrated in the testing that they actually were able to draw 650 watts DC side across a 550 watt power supply. And you don't want a capacitor to pop or something else to go bad like that while gaming, that's just scary and bad. And it can kill components.

[Monk]

To draw that much power, you need components actually capable of it, the op doesn't have such a setup.
A cap poping won't kill anything, power surges tend to kill stuff, not caps poping and as such loosing the charge as a minor (technically) explosion lol.
Technically most psu's can supply more power than they are rated for, as long as it's simply the components pulling the power and not a surge, it's fine, when a PSU cannot supply enough power it will simply shut down, not make anything explode or die

This is, as often the case, of reading a technical review and freaking out over the results, which at first glance sound bad (not saying it's not), but in reality, it's not really an issue, mind you, it's been a long time since I studied this stuff in college, but I'm pretty confident in my basic conclusion here,.

So. Would I go buy or suggest someone buy it. Probably not, there's better options at the same price, am I confident enough that I'd test it on my own hardware if I had it to prove nothing will happen, sure.

[🦊Λℚ𝓤ΛƑΛᗯҜᔕ🦊]

引用自 Monk：

Technically most psu's can supply more power than they are rated for, as long as it's simply the components pulling the power and not a surge, it's fine, when a PSU cannot supply enough power it will simply shut down, not make anything explode or die

Some how you're failing to read and understand, so I'll try to explain it for you. Yes, most power supplies would just "simply shut down" when they are overloaded. But the CX550M can not and will not ever shut down. It does not have shut down protection. Or if it does, it doesn't work. It will continue pulling power indefinitely until it pops. That's what the review demonstrates and points out. JonnyGuru (and their staff) are the most respected hardware review facilities in the industry and tests only power supplies and they have been doing it since the `90's. If they say it doesn't work, it doesn't work.

[Monk]

None of that makes what I said incorrect, maybe I missed the part where they said it caused damage died etc. All I saw was that it could handle far more than its rated for, although, again, that's not going to harm anything other than the PSU, if it's not shutting down, yes it means it's either faulty, or hasn't reached the point it's set at, either way, not a reason to spend money replacing it.

[🦊Λℚ𝓤ΛƑΛᗯҜᔕ🦊]

引用自 Monk：

None of that makes what I said incorrect, maybe I missed the part where they said it caused damage died etc. All I saw was that it could handle far more than its rated for, although, again, that's not going to harm anything other than the PSU, if it's not shutting down, yes it means it's either faulty, or hasn't reached the point it's set at, either way, not a reason to spend money replacing it.

It's not your system and your money invested in it. Personally if it was me, I wouldn't run the risk of hoping and praying it doesn't ruin my $1000+ computer when it goes over rating and dies, not when a properly working power supply with proper safety features is < $100. That's me though.

[Monk]

This is what I meant about not understanding the review you read.

His system cannot pull enough power to make it any kind of issue.

As I said, I would happily hook it up to my system that actually pulls around 8-900w just to show nothing bad would happen, the same as setting WAY to many volts for a CPU won't actually harm it.

His system may pull 300-350w at max, overclocked, which is why there is zero chance of his system trying to pull to much power.

Edited for clarity on CPU.