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PC Build : PSU ?

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SpeedX

Hello,
I wonder if a Thermaltake 450W (Active PCF) will be enough to power :
CPU : i5-4460 (3.2Ghz)
GPU : GTX 1050Ti 4GB
RAM : Avexir 2x4GB (8GB kit)
HDD : 1TB WD HDD
Thanks :)

8 years ago

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15 Comments
talgaby

Yes.

8 years ago
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SpeedX

Thanks :)

8 years ago
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talgaby

If you want a more elaborate: no single-GPU system needs a stronger PSU than that, unless you have some really power-hungry high-end GPU. A GTX 1050 is anything but that; it draws around 70 W under full load. The entire consumption of your system under stress test will be under 220 W. A better-grade 300 Watt power supply could power your PC comfortably. It is just PSUs are the thing most people really like to tend to overcalculate. And I mean really overcalculate. There are fully-fledged PCs than need less than 15 Watts of power at full load.

8 years ago*
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therealfliiick

I don't think so, you will need more than that tbh.

8 years ago
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SpeedX

Thanks :D

8 years ago
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CMDRNef

http://www.coolermaster.com/power-supply-calculator/

This might help. :) When I was building my PC everything I read kept suggesting a PSU over 500W just to be safe even for simple systems, there's no harm going over but going under could wreck your machine.

8 years ago
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SpeedX

Oh. Ok thanks for advice

8 years ago
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LittleBibo1

Just remember that PSU manfacturers like to suggest much more power than is neccesary.
Depending where you live you may also consider Bequiet PSUs which are the quasi-standard in Germany.

8 years ago
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Incariuz

The only thing I'd add to what mjneal said, is... Be sure the PSU you get is at least 80+ Bronze Certified. Higher certifications like silver and gold are better, but bronze I find is good enough, you simply don't want to get a psu that doesn't have the certification.

8 years ago
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NB264

I'm kind of disappointed that every new CPU and GPU need less and less power... My Seasonic 620w is not being utilized properly since I moved away from Core2Duo/gtx9600 combo couple of years ago.

8 years ago
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Tzaar

Should be plenty, just get a reputable brand and not some generic junk.

8 years ago
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DogeRoss

Have similar system, I was thinking about buying 450W and everyone said its more than enough. If you think about upgrading your pc, you may think about a better PSU but for this system, it should work :)

8 years ago
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AllTracTurbo

You can get away with a smaller one, but if the price is right, it sounds like a good size. I would suggest a power supply bigger than you need for 3 reasons.

  • Most power supplies are the most efficient when you are drawing around 50% of their max output. 40-60% is probably optimal in most, but some can be just as efficient outside of that range. This usually only makes a small difference though, I think around 2 to 4% worse efficiency at very high or low load.
  • Using a larger power supply than you need will heat it up less and put less wear on it which will allow it to last longer. It will also be quieter because it will not run the fan as fast.
  • Having a larger power supply than you need now means that if you decide to upgrade to a more power hungry card in the future, you will not need to buy a new power supply. If you buy a 300 watt PSU now and then upgrade to a card that draws 200 watts in a few years, you will need a new PSU (especially if overclocking). Also, I am not saying that this specific 450w PSU would work with a 200w GPU, it's just an example, especially since it only has a single 6 pin power for the GPU.
8 years ago*
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WilliamCZ

https://linustechtips.com/main/topic/631048-psu-tier-list-updated/

Tier 1-3 is acceptable. 450W would be just enough.

8 years ago
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SpeedX

Alright, thanks for answers !

8 years ago
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