Power Supply Recomendation

[aledronoto6]

I need a power supply for the system that I'm building, so I'll leave my budget, system, and brands available here in my country.
System Specs:
CPU: i5-750 @2.66 GHz (Overclocked to 3.41 GHz, 83°C under full stress test) (planning to push it to 4.0GHz when I get a new cooler) with Intel stock Cooler.
Mobo: Asus Maximus III Gene
RAM: 4x2GB (I don't know the brand) 1333MHz
GPU: MSI 8600 GTS OC, I will replace it with an Asus ROG STRIX 1050Ti OC when I buy the PSU
PSU: Spektra ATX-800w
HDD: 2x500GB WDBlue (2007) + 1TB WDGreen
Optical Drive: LG DVD RW
Fans: 2x 120mm fans (1 intake, 1 exhaust), planning to get 2 more in the future.
Case: I don't know the brand but it has space to put an intake and an exhaust fan (modifying it in the future in order to put more fans), the PSU must be placed on the top of the case, and it doesn't have an acrylic cover.

Budget: Max $90 US Dollars.

Brands Available: Cooler Master, Corsair, Cougar, DeepCool, EVGA, Fractal Design, Gigabyte, Riotoro, Seasonic, and Thermaltake.

I was wondering if 550w should be enough for my system and for not changing the PSU at least in 3-4 years. I'm open for suggestions.
Thanks for reading.

 

[Peter Martin]

SeaSonic is my pick. If you can get above a 550 I would But it’s probably plenty for now. When you use PC part picker to spec a system they show you what the average wattage is so you can plan your power supply purchases

 

[Rexper]

A good 400w power supply is fine for your system. A high quality 550w PSU would allow for OC i7 8700k + GTX 1080ti for example.

and for not changing the PSU at least in 3-4 years

What impacts the longevity is the PSU quality, not wattage.

Which exact power supplies are available to you? What is your country?

Your budget would afford a Corsair RMX, EVGA G2/G3, or Seasonic Focus Plus in the US. All are great PSUs.

 

[accountanonymous]

The main things that affect performance of a PSU are:

1: Efficiency. Watts = Volts*Amps, but there is some lost. Go for a Gold Efficiency rating, or >85% if no efficiency rating is provided.
2: Rails. PSUs have rail numbers which can effect reliability. Go for at least 2.
3: Wattage. As others pointed out, 550 watts is definitely good enough.

With this, I recommend the Seasonic FOCUS Plus Series SSR-550FX 550W 80+ Gold Intel ATX 12V Full Modular 120mm FDB Fan Compact 140 mm Size Power Supply, for $79.99 on Newegg: https://www.newegg.com/Product/Product.aspx?Item=N82E16817151189&cm_re=550W_gold_PSU-_-17-151-189-_-Product.

That is near the top of your budget, but PSUs last a good 20 years before dying, so if you continue to upgrade your PC, you should get around 5-7 years.

EDIT:

If you want to spend a little less: Seasonic FOCUS series SSR-450FM 450W. You will need to upgrade a little sooner, maybe 3-4 years.

 

[Karadjgne]

Efficiency doesn't affect performance, only the electric bill. A higher efficiency psu has less wasted heat, so will draw less from the wall for the same load output vrs a lower efficiency model.

Performance is affected by quality of platform design. I'd personally rather own an old Seasonic M12-II Bronze rated psu, than a Gold rated Thermaltake TR2. At any wattage.

Rails is subject to argument, both by manufacturer and user. And there's no clear winner. Many psus, like the XFX Pro use a single 12v rail and yet we're among the best budget psus to be had. With a single rail, figure amps as being somewhat accurate. With multiple rails, they work in parallel but the rails don't add up as totals. So while 2x 18Amp rails should add to 36A, in practice they don't, they add up closer to 32-34A. What'll be important is the combined wattage, not so much the combined amperage.
A 'rail' is nothing more than a circuit, but in almost all psus, the final output comes back to a single buss, a single point, so single or multiple rails all end up in the same, joined place anyways, offering no clear advantage to either design, only a few differences in design.

Never seen a psu last a good 20 years. Capacitor degradation, especially in cheaper or highly abused psus will kill them long before that happens. Before the dc-dc designs came out, you were in good shape to get 5-7 years out of a group regulated design, most were only reliable for 3-4 and some were so miserable it was 0 months to 18 months on average.

A cpu will easily last 20+ years, my old Pentium II 350MHz is still kicking, except software will make them obsolete in less than 10 years.

 

[aledronoto6]

A good 400w power supply is fine for your system. A high-quality 550w PSU would allow for OC i7 8700k + GTX 1080ti for example.

and for not changing the PSU at least in 3-4 years

What impacts the longevity is the PSU quality, not wattage.

Which exact power supplies are available to you? What is your country?

Your budget would afford a Corsair RMX, EVGA G2/G3, or Seasonic Focus Plus in the US. All are great PSUs.

I'm from Chile, South America.
In the brands that you mentioned, this is what I have available and affordable:
EVGA: 650w GD, 550w GD (4 US dollars more than the 650w one), 550 B3, 7500BQ, 700B, 600BR or below.
Corsair: VS 400, 450, 550, 600 (80 PLUS models) and VS 550 without certification.
Seasonic: M12II-620 EVO, Focus 550 Gold (SSR-550FM), G Series G-550 (SSR-550RM).

I also have explored the possibility to buy in the USA and ship it to Chile, but comparing prices, the price of products + international shipping are technically the same or even higher than local prices.

 

[aledronoto6]

Efficiency doesn't affect performance, only the electric bill. A higher efficiency psu has less wasted heat, so will draw less from the wall for the same load output vrs a lower efficiency model.

Performance is affected by quality of platform design. I'd personally rather own an old Seasonic M12-II Bronze rated psu, than a Gold rated Thermaltake TR2. At any wattage.

Rails is subject to argument, both by manufacturer and user. And there's no clear winner. Many psus, like the XFX Pro use a single 12v rail and yet we're among the best budget psus to be had. With a single rail, figure amps as being somewhat accurate. With multiple rails, they work in parallel but the rails don't add up as totals. So while 2x 18Amp rails should add to 36A, in practice they don't, they add up closer to 32-34A. What'll be important is the combined wattage, not so much the combined amperage.
A 'rail' is nothing more than a circuit, but in almost all psus, the final output comes back to a single buss, a single point, so single or multiple rails all end up in the same, joined place anyways, offering no clear advantage to either design, only a few differences in design.

Never seen a psu last a good 20 years. Capacitor degradation, especially in cheaper or highly abused psus will kill them long before that happens. Before the dc-dc designs came out, you were in good shape to get 5-7 years out of a group regulated design, most were only reliable for 3-4 and some were so miserable it was 0 months to 18 months on average.

A cpu will easily last 20+ years, my old Pentium II 350MHz is still kicking, except software will make them obsolete in less than 10 years.

Great comment bro, from the options listed above, what do you think I should buy?

 

[Karadjgne]

Seasonic: M12II-620 EVO, Focus 550 Gold (SSR-550FM), G Series G-550 (SSR-550RM).

Only ones even remotely worth considering. The Focus is newer dc-dc design, the others are group regulated and older designs, but still stronger and better quality than the rest named. The Evga GD has potential, but it's so new there aren't really any reviews out on it yet, so I can't honestly say if it's good or bad.

 

[aledronoto6]

Only ones even remotely worth considering. The Focus is newer dc-dc design, the others are group regulated and older designs, but still stronger and better quality than the rest named. The Evga GD has potential, but it's so new there aren't really any reviews out on it yet, so I can't honestly say if it's good or bad. [/quotemsg]

Ok, thanks for the recommendations, I think I'll buy the Focus, but If the M12II shows up with a big discount I might buy it.