Random power off and then when I tried to turn it back in it popped and started to smoke

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zake881

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Jul 29, 2016
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I've been a dozen articles like this but I want to be sure.
My set up:
PSU: corsair cx750m, I swear that's meant to be good...
CPU: amd fx8350
Motherboard: MSI 970A krait edition
Graphics cards: 2x 270x both overclocked to 1135mhz
Ram: xballistix sport, 16gb
3 hdds and one ssd
Anyways the problem I had was when playing GTA V my computer suddenly completely shut off, I tried turning it on and I only got the flash of my fans and then nothing.. I then unplugged it all and left it a bit, after that I turned it on and hoped however I was met with a pop and smoke coming out the top with a weird smell, the smell is lingering by the 2 top fans, I checked to see if the PSU had the smell but it didn't and I have no way to check the PSU atm as I gave my other pc away...
A lot of people say to get decent PSUs however thats what I did so am I still having the same issue as everyone else?
 
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Supahos
That is very very far from a decent psu it's tier 4 (lowest rating Tom's gives for one not to throw away immediately) maybe passable for an office machine certainly not a gaining rig. Most likely it went toast and cooked something else with it. The worst part about bad power supplies is they die and take parts with them. Higher end ones just die usually no collateral damage
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Supahos

Supahos

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That is very very far from a decent psu it's tier 4 (lowest rating Tom's gives for one not to throw away immediately) maybe passable for an office machine certainly not a gaining rig. Most likely it went toast and cooked something else with it. The worst part about bad power supplies is they die and take parts with them. Higher end ones just die usually no collateral damage
 
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boosted1g

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Jun 12, 2013
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As stated the CX series are not good PSU's. They had weak capacitors that fail under load, now the good news is that they are not guaranteed part killers as they do have some circuit protections in them so there might not be any additional damage.

I personally have pretty much sworn off Corsair PSUs for now because either they are bad quality ones, or the ones that are good quality are more expensive then other PSUs in its class.

ADDED; Unfortunately it is the situation where you truly tried to do the right thing: you got an 80+ rated PSU, from a brand name company, with a good reputation, that had enough power for your needs. Corsair just made a dud series (well more then one).
With PSUs you have to look at real tech reviews on them, the kind of reviewers who do a full disassembly and heavy load testing on them.
 
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zake881

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It did turn itself of I'm guessing to preserve some things and it wasn't like as cheaper like my old one
 
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zake881

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Ok now I understand how crap mine is, can anyone recommend a suitable PSU which will last? I'm thinking of getting newer graphics cards next year or something
 
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zake881

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Ah so tier 2 should be fine as well, just because I saw some in tier 1 are quite expensive
 
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capt_taco

capt_taco

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For a pop and smoke, the power supply is usually the first suspect ... as others have said, CX series is not very good quality and especially risky if you're overclocking. With any luck, it didn't take any other parts with it.

With the CX series, they basically put a cheap piece of a junk in a box with "Corsair" written on the side, and hoped that people would buy it on name recognition alone. I have no idea how many they've sold that way - probably hundreds of thousands or millions - but IMO it has put a huge number of people at risk unknowingly because they thought they could trust Corsair's good reputation ... then whoops, you actually can't. A cheap trick on their part for sure.

The thing about PSUs is that most brands don't actually make their own units; they are made to spec by Asian manufacturers, and a brand like Corsair might have several different suppliers. This chart is a couple years old, but it gives you the idea.

http://www.tomshardware.co.uk/power-supply-psu-brands,review-33002-4.html

Basically units made by Seasonic and Super Flower tend to be pretty reliably good, there are a few other OEMs like FSP, Sirtec, HEC that make some reliable models and some junk, so you can be OK if you do your research - and then there are a lot of random OEMs that are all over the map. But the Units made by Seasonic are why Corsair got its reputation for reliability; their other units you are rolling the dice.
 
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zake881

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So I should be looking at those 2 brands mainly I guess

 
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