Is my PSU Overkill?

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LightsXBane

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Feb 25, 2014
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Hello,

Right now I have a PC with this PSU: MS-TECH MS-N750-VAL, 750 Watt PSU

The PC:

Case: Cooler Master 690 II Advanced 3 case fans

Processor: AMD Phenom II x4 945 at 3.0 Ghz with Cooler Master Hyper 212 EVO CPU Cooler

Graphics Card: Sapphire Radeon R7 260X OC

Memory: 8 GBS 4x2 Kingston Value Ram

Motherboard: ASUS M5A99X Motherboard

SSD: Samsung 840 EVO 120 GB

Samsung DVD Drive

I was wondering if my 750 watt powersupply was too much for my build and if it is a good idea to replace it with a lower watt one to save myself some money. Any suggestions? I live in The Netherlands so I will look if the suggestion are available here.

Thank you! :)
 
Solution
HiTechObsessed
Well it has an efficiency of less than 80%, just means that it's not 80+ certified. And it only can supply 456w on the +12v rails, so it's a bit of a stretch for them to label it a 750w power supply. That said, 456w is plenty for a 100w CPU and a 125w GPU. I wouldn't worry about it :) However, I wouldn't try to Crossfire on that power supply though.
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It is a bit overkill. If you wanted, you could cut that down and get yourself a better CPU. If you plan on going Crossfire/SLI in the future, you'll want a power supply of that size, however.
 
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I was looking to maybe upgrade to a FX 6300 since it will fit my budget. I think I won't be crossfiring since I am happy with my 260X.

 
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I take it you already have the power supply right? The labeled wattage is overkill, but I have no idea of that brand, so I doubt it's very good quality. I wouldn't worry about it. If it can supply anything close to its rated wattage, you should at least be in the higher range of its power efficiency.
 
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It definitly works fine, and on the website it says it has a efficienty of 80%. Is this true?

 
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Well it has an efficiency of less than 80%, just means that it's not 80+ certified. And it only can supply 456w on the +12v rails, so it's a bit of a stretch for them to label it a 750w power supply. That said, 456w is plenty for a 100w CPU and a 125w GPU. I wouldn't worry about it :) However, I wouldn't try to Crossfire on that power supply though.
 
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Solution


Great! Will it be a good upgrade from my current processor to the FX 6300 by the way?

 
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It will be a good upgrade. I wouldn't expect a big jump or anything in gaming, but what it will give you is better resistance from frame drops, and a bit better general computing performance :)

If you get the 6300, since you have a decent cooler and good motherboard, I would overclock it as much as it'll let you lol
 
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Haha, I will look into that. And you deserve the best solution, my good man. You've earned it, you helped me alot! :)


 
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It's definitely a possibility. I don't have any experience with MS Tech, but being a generic brand isn't comforting.

A non-overclocked 6300 and an R9 270 will pull around 275-300w at full load. That PSU can supply up to 38a on the +12v rails, which is very low for a 750w PSU, but *should* still be alright.

If you can, I would definitely recommend getting a new, quality power supply just to be safe. That said, if you won't be overclocking or anything, you should be able to run your system without a problem. It's up to you whether or not you want to risk it, as like you said, a bad power supply can damage a system if it blows.
 
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I don't want my pc to explode. 🙁 So what PSU do you think is the best for me? And is it possible that there was already damage done by the PSU? I got some blue screens recently with a variety of error codes my I think I fixed it by deleting the USB inpist with yellow explanation marks in the device manager.

You have helped my alot already, so what PSU is recommended for me? Like you said I won't do anything fancy like overclocking and crossfiring. I really just don't want to risk it, I value my hardware I spent my hard earned money on. :)
 
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I appreciate that you are concerned, too many people shrug off poor PSUs and then come back when they have problems lol

The PSU can definitely be what's causing some instability, but I wouldn't worry too much overall. If any of your parts were noticeably damaged you would know by now. Really the only thing it would do without actually blowing is causing premature wear on your parts due to overly-varied voltage fluctuations, but don't worry too much on this, as most components are built to handle that kind of thing for the most part.

Do you have a specific budget in mind? A few great quality units:

http://www.pixmania.nl/pc-voeding/antec-hcg-520m-pc-voeding-520-w/12396954-a.html
http://www.pixmania.nl/pc-voeding/enermax-etl650awt-m-triathlor-eco-650-watt-pc-voeding/21851710-a.html
http://www.pixmania.nl/pc-voeding/ocz-fatal1ty-550-w-pc-voeding-ocz-fty550w-eu/21769892-a.html

All 3 are top-notch quality, and would be more than capable of running your system :)
 
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Mhm, I have about 250 euros saved up right now, before the FX 6300 and R9 270 upgrade since I havent done that. The FX 6300 I will be getting new, and the R9 I will be getting used for aroud a 100 euros, is that smart by the way? These are pretty affordable for me. I usally can't choose though, as I have no idea which one will be best.
 
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It depends how it was used. I don't think Europe saw the crazy mining thing nearly as much as the USA did, but I would make sure it wasn't used as a currency miner. If it was just normally used, buying used is generally fine, as long as you can get a return policy lol

As for the CPU and PSU, the 6300 is selling for around 100 Euro and the PSU around 75 Euro. That puts you just a tad over what you have now, if you can get an extra 25 saved up :)
 
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It's all in who it is lol Antec is a very well-respected PSU maker, and they can reflect that respect in their prices. OCZ doesn't produce any power supplies any more since they went bankrupt (though it's still great quality, and their warranty is still served through Toshiba), and Enermax is good as well.

Economics I guess is the reason lol
 
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