Will it work

[brodieslee]

Hello, 

I am building a new computer for my brother and I was wondering if his old 400w evga power supply will work with a gtx 1070 and a core i5 6500. BTW, He is not going to be doing any overclocking. 

[TetraSky]

It's cutting it short. But it should work. It depends on whether or not the PSU is capable of the full 400W on the same 12V rail. (or at the very least, more than 300W) And on how old the PSU is, as they degrade over time.

You should always aim to have a bit of head room and that PC could probably easily reach 350+W on full load. Which is unrealistic, as that can never happen outside of a stress test, so the actual "real world" consumption while gaming will probably be under 300W.

[Marc Tristant]

6 minutes ago, brodieslee said:

Hello, 

I am building a new computer for my brother and I was wondering if his old 400w evga power supply will work with a gtx 1070 and a core i5 6500. BTW, He is not going to be doing any overclocking. 

Can you send me the full specs of the system. The calculations I made show the system consuming aprox 320 watts just under the 400w mark. I recommend getting a 600 or 550w PSU just in case (if you want to upgrade to a more watt consuming hardware in the future)

[brodieslee]

https://pcpartpicker.com/list/bYpWm8 Here are the full specs