Is a 620w PSU enough for my system?

[redness]

Can get a M12-II at a good price so am wondering if the 620w it offers will be enough:

Video Card: MSI GTX 1070
Motherboard: Asus STRIX z270e Gaming
CPU: i7 7700k
RAM: G-Skill Ripjaws V 2x4GB

Also included is one HDD, one SSD and some LED strips.

 

[RCFProd]

It'll be enough, comfortably. Only need a good 450 watts for that system.

2x48GB RAM though? 😵

 

[redness]

It'll be enough, comfortably. Only need a good 450 watts for that system.

2x48GB RAM though? 😵

Oh lol. Fixed and thanks.

How did you come up with the number 450?

 

[RCFProd]

Rough estimation really.

You check the power consumption of the GTX 1070[Example here] = ~150 watts.

The i7-7700k runs at 91W TDP by default, so combined you've got 241W. Add about 80 watts for the rest of your system. = ~330W. Add overclocking which would increase power usage by 20-30 watts.

Peak power usage is likely to be below 350 watts, It's recommended to take a power supply with 100 watts of head room so It's not running near 85%+ stress loads all the time.

It tells you that 450 watts would already be fine. Extra head room can't be a bad thing though.