A new PSU

[Amearth]

I’m getting a new GPU that requires around 400w, but my current system only has 180w. I tried looking for the name of my systems PSU but found nothing on the official product specifications or any online forums 

if someone could provide me the name of the PSU the system has or even just it’s dimensions would really help me out.  A recommendation for a new one would be even better too

thank you 

[Prométhée]

hi

you will find answers here

https://h30434.www3.hp.com/t5/Desktop-Knowledge-Base/Power-Supply-Cross-Reference-for-specific-model...

[Amearth]

Thank you, that’s a very informative chart 

but I have questions, & sorry if these are stupid questions, but what’s the difference between the black & green ones, & why do some PCs have 2 or more x’s in their row? Just so I know for the future 

[Prométhée]

There is no such thing as a stupid question.
stupid is the one who does not ask for anything and does something stupid and then comes to cry !!
Unfortunately the author of this formidable knowledge base has passed away.
Take a good look at the bottom, there is a little caption that should help you understand better