PC power supply

[mayzejack]

Just asking to make sure. I assume it’s okay if I have a cooler master 650W gold 80+ psu and pcpartpicker says my pc’s estimated wattage is 519W (with absolutely every components). (I did the math myself with all components wattage and it came out to about 540W max)  Just trying to see if i can run all the fans I want in my new case setup. I am not wanting buy another psu since I recently purchased the one I have.  

[BiotechBen]

13 minutes ago, mayzejack said:

Just asking to make sure. I assume it’s okay if I have a cooler master 650W gold 80+ psu and pcpartpicker says my pc’s estimated wattage is 519W (with absolutely every components). Just trying to see if i can run all the fans I want in my new case setup. I am not wanting buy another psu since I recently purchased the one I have.  

Not entirely sure which exact model it is based on description, but I can tell you that my 550W seasonic has run very close to the rated 550w for extended periods before without anything bad. So long as it is a quality PSU, you should be totally fine. 

[mayzejack]

6 minutes ago, BiotechBen said:

Not entirely sure which exact model it is based on description, but I can tell you that my 550W seasonic has run very close to the rated 550w for extended periods before without anything bad. So long as it is a quality PSU, you should be totally fine. 

It’s the cooler master 650W gold v2. An A-Tier psu according to cultists network. 

[manikyath]

going for the 750W model might make it run a bit more cool&quiet.. but in theory it's plenty.

[ImWilly]

1 hour ago, mayzejack said:

Just asking to make sure. I assume it’s okay if I have a cooler master 650W gold 80+ psu and pcpartpicker says my pc’s estimated wattage is 519W (with absolutely every components). (I did the math myself with all components wattage and it came out to about 540W max)  Just trying to see if i can run all the fans I want in my new case setup. I am not wanting buy another psu since I recently purchased the one I have.  

There are several concerns for buying PSU capacity

Although it's nice not to buy overspec PSU, and LTT has covered on forcing almost matching capacity of Seasonic PSU and power requirement, there are reasons why GPU manufacturer almost always recommend going much higher capacity

 

Firstly, to protect against 'Transients power spike', it usually happened in microseconds (μs) when going for high FPS and top tier GPU

The spike could go as high as 2x the GPU TDP, but certain PSU can still handle it, that's why for small headroom of capacity, it's better to check on detail analysis from Gamers Nexus and other credible reviews.

Secondly, depending on future building/upgrade, it's better to buy a bit bigger capacity so that in next upgrade, you won't have to replace your PSU

Cable management is quite a nightmare, especially plugging out all of the cables and reinsert all of the new ones

 

There's no good general rule of thumb of how much headroom for certain PC build yet, maybe it will be if the proposal from Gamers Nexus and others to change/improve the current rating system (80+ Gold, platinum, etc) to a system that we actually need to use

 

 But, as long as you buy from reputable brand, and generous 20% headroom (please don't hold me liable if it failed, pretty please), you should be doing fine