Can this Chinese 550W PSU support my system?

soweic

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Oct 19, 2014
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Hello,

I am putting together my very first build here, but I have very limited reach to PSU. So I want to make use of my existing psu which is working fine with my old rig, but I am not sure if it can withstand the new build which I am planning to overclock a bit below:

My build is:
Maximus VI Hero
Core i7-4770K (w/ Phanteks PH-TC12DX CPU Cooler)
MSI 750 ti
16GB RAM
1TB Hybrid HDD
4 80mm case fans

My psu: https://www.dropbox.com/s/axhuva9g6c4aa7a/2015-01-04%2022.59.44.jpg?dl=0
 
Solution
I would not trust that PSU to handle your expensive parts.
The 12v rail is rated at 15AMPS, which if you calculate it equals 180w available through the 12v rail to your cpu and GPU mainly.

The I7 4770k can use up to 176w according to Toms review.
http://www.tomshardware.com/reviews/core-i7-4770k-haswell-review,3521-18.html

Which doesn't leave any room for your GPU and any overclocking at all. Not to mention, even though it's rated at that spec because it's a cheap psu most of them fail before even close to their liimit. So I would HIGHLY recommend a new PSU.

Look at Corsairs range and Seasonics range. I personally like Corsair, depending on your budget avoid the CS and VS series as they're also made of cheaper parts, but if budget is...
I would not trust that PSU to handle your expensive parts.
The 12v rail is rated at 15AMPS, which if you calculate it equals 180w available through the 12v rail to your cpu and GPU mainly.

The I7 4770k can use up to 176w according to Toms review.
http://www.tomshardware.com/reviews/core-i7-4770k-haswell-review,3521-18.html

Which doesn't leave any room for your GPU and any overclocking at all. Not to mention, even though it's rated at that spec because it's a cheap psu most of them fail before even close to their liimit. So I would HIGHLY recommend a new PSU.

Look at Corsairs range and Seasonics range. I personally like Corsair, depending on your budget avoid the CS and VS series as they're also made of cheaper parts, but if budget is a problem then they will work much better than your current psu.
what is your budget?

-good luck
 
Solution


Great info. So to know the total Watt, is to multiply the +12v column?

Here in Cambodia, I can find Deadex 80+ Gold 650W, and Corsair RM 650W at $169 the same price; and 750W at $179.

Local store here: http://www.chantracomputer.com/desktopsystem.html
 
The RM 650w is a great psu, and is rated quite high. Go for that 😉

The 12v column is the specialized rail that powers your cpu, GPU and other components such as DVD drivers, fans etc.
To calculate the wattage of the 12v rail it's
12x(AMPS)=wattage.
There is also this calculator: http://www.rapidtables.com/calc/electric/Watt_to_Amp_Calculator.htm

Although you can calculate the wattage availible the amount actually delivered by the psu is measured either by it's rating (e.g. GOLD, BRONZE) or by the quality of the psu. Like your old psu even though it is rated at 15A it may not actually deliver that amount due to in-efficiency. So using a wattage calculator can be used but may not be accurate.

Always look at quality and rating above the supposed Amps that is given.
-good luck
 
that's a very limited selection there for psu's 🙁 the 650w corsair rm is the best of the bunch and enough power for your system. it has enough power for a better gpu later on when you need to upgrading as well. you will be able to use that one until it dies 10+ years from now :)


 


The one your friend is trying to sell you is another no name PSU, likely made from cheap parts and just as good as your old one. That's if the link you gave worked properly.

I would still stick with the Corsair RM, It has a good reputation and so does Corsair in general. Stick with the Corsair RM and you won't be disappointed and it'll even let you upgrade in the future without having to buy a whole new PSU. It'll run the highest tier cards without any problems at all.

So avoid any brands which don't have a good reputation (e.g. random Chinese brands). Also the Leadex is not bad but Corsair is usually better and the more well known brand, and they're the same price? may as well go Corsair.

-good luck

edit: Don't cheap out on PSU's especially, my friend had his cheapo psu burn itself out before he asked for a recommendation.
You also run the risk of damaging other PC parts if the psu cannot handle the load.
 
I gave the translated link from Japanese, that might not work properly. Anyway, it's ScythE brand Core Power 4.
Or I will need to save up for Corsair RM 650W 🙁
 


It's still a rather cheaply made psu compared to what Corsair offers. I still wouldn't trust it to run your system, even lesser to support my overclocking.

Once again I still go for the Corsair RM. Are you able to find maybe the Corsair 550? Or any of the CS OR CX series (even though the CS AND CX series are also cheaply made they are still better).

Also are you able to find any Seasonic or XFX psu's over there?