CX 750M a sufficient power supply?

[Blacky_the_Bear]

I bought a xfx r9 390 and am planning to get a Intel i5 4690k cpu with the Corsair H100i liquid cpu cooler (main components that are power hungry). A family member gave me the cx750m 80plus B but im not sure if it is capable to fully run the system and be able to overclock a bit. What power supply would you recommend for this build?

[Benergy]

I bought a xfx r9 390 and am planning to get a Intel i5 4690k cpu with the Corsair H100i liquid cpu cooler (main components that are power hungry). A family member gave me the cx750m 80plus B but im not sure if it is capable to fully run the system and be able to overclock a bit. What power supply would you recommend for this build?

In short: yes. (It's a lot more than capable)

[Sir Asvald]

I bought a xfx r9 390 and am planning to get a Intel i5 4690k cpu with the Corsair H100i liquid cpu cooler (main components that are power hungry). A family member gave me the cx750m 80plus B but im not sure if it is capable to fully run the system and be able to overclock a bit. What power supply would you recommend for this build?

Please don't get the PSU. Not good. Get something like Season or Evga 

[Guest]

It is, was about to say it's a little bit a lot for that but you already have one, so go for it.

[The Official Czex]

In short: yes. (It's a lot more than capable)

 

 

It is, was about to say it's a little bit a lot for that but you already have one, so go for it.

 

[EdInk]

It will be sufficient however take note of the manufacturers continuous output rated temp...Corsair states 30 deg celsius. Above that and it may malfunction/degrade quicker if used above it for long periods.

 

http://www.corsair.com/en-gb/cx-series-cx750m-modular-atx-power-supply-750-watt-80-plus-bronze-certified-modular-psu

 

A recommended alternative would be EVGA G2 series

[Benergy]

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That sounds a lot like a marketing ploy. 'This perfectly functioning PSU isn't good enough for you - because there's a more expensive version over here'.

 

Is there actually a technical reason you're saying it's not suitable? Not providing enough power to a certain component or anything?

[The Official Czex]

That sounds a lot like a marketing ploy. 'This perfectly functioning PSU isn't good enough for you - because there's a more expensive version over here'.

 

Is there actually a technical reason you're saying it's not suitable? Not providing enough power to a certain component or anything?

 

Yes. It's "basic". It can't handle the constantly shifting wattages that a "gaming" rig needs. Its capacitors are the cheap ones found in no name units.

[Guest]

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I mean in wattage

[The Official Czex]

I mean in wattage

 

Not a good idea to even get close to its rated wattage. 400W is safe on that thing. 400W is also not enough to power a system with a 390 in it.

[Benergy]

Yes. It's "basic". It can't handle the constantly shifting wattages that a "gaming" rig needs. Its capacitors are the cheap ones found in no name units.

I've built 3 gaming machines with CX500s in them, all are several years old and none have yet failed in any way. 

Am I extremely lucky?

[The Official Czex]

I've built 3 gaming machines with CX500s in them, all are several years old and none have yet failed in any way. 

Am I extremely lucky?

 

Very.

[Benergy]

Very.

Even if they are as much of a liability as you claim them to be, a 750W PSU in a single GPU machine wont be under pressure at all to deliver the power even when CPU/GPU are at max load.

[The Official Czex]

Even if they are as much of a liability as you claim them to be, a 750W PSU in a single GPU machine wont be under pressure at all to deliver the power even when CPU/GPU are at max load.

 

 

 

Load doesn't matter. Cheap capacitors will literally explode under any load.

[Benergy]

 

Load doesn't matter. Cheap capacitors will literally explode under any load.

Why would anyone buy them if they explode so often?

I'd guess the silent (vast) majority of users have had little or no problems with theirs.

 

I'm not defending its components, it's a budget PSU series, but with that in mind it performs very well. 

Is it less reliable than a Seasonic PSU? Of course.

Is it as bad as a generic no-brand PSU? Nowhere near it.

 

For the average user they're more than good enough, and at a very attractive price point (literally half the price of the AX series).

[The Official Czex]

Why would anyone buy them if they explode so often?

I'd guess the silent (vast) majority of users have had little or no problems with theirs.

 

I'm not defending its components, it's a budget PSU series, but with that in mind it performs very well. 

Is it less reliable than a Seasonic PSU? Of course.

Is it as bad as a generic no-brand PSU? Nowhere near it.

 

For the average user they're more than good enough, and at a very attractive price point (literally half the price of the AX series).

 

They don't know what they're in for. It's inexperienced builders who use them.

[quan289]

The CX750M is a PUQ-B unit internally, which is a good platform in the mainstream segment in itself. Of course, the CX variant is a bit cost down in comparison to other units that uses this platform.

 

Since you already gotten it (not to mentioned, for free), just used it. The CX750M is capable of power a single GPU setup like the R9 390

[Benergy]

They don't know what they're in for. It's inexperienced builders who use them.

Or perhaps they're on a budget.

[The Official Czex]

Or perhaps they're on a budget.

 

Then buy a cheap SeaSonic unit.

[Benergy]

Then buy a cheap SeaSonic unit.

They are significantly more expensive.

[The Official Czex]

They are significantly more expensive.

 

http://pcpartpicker.com/part/corsair-power-supply-cx750m - 74.99 USD

 

http://pcpartpicker.com/part/seasonic-power-supply-s12ii620bronze - 64.99 USD

 

Far more reliable for less.

[Benergy]

http://pcpartpicker.com/part/corsair-power-supply-cx750m - 74.99 USD

 

http://pcpartpicker.com/part/seasonic-power-supply-s12ii620bronze - 64.99 USD

 

Far more reliable for less.

A 750W could handle 2 reasonable wattage GPUs.

A 620W could not.

[The Official Czex]

A 750W could handle 2 reasonable wattage GPUs.

A 620W could not.

 

Did he say he wanted dual GPU' s? No? OK.

[Benergy]

Did he say he wanted dual GPU' s? No? OK.

He did not, but he did say he already had a CX750.

Why waste money on another PSU for the sake of a modest reliability increase, and significant wattage drop

[Overkilled]

@airdeano this thread is proof enough that I'm not the only one who thinks the CX series is a shitshow.