Can my computer handle an HIS 4670?


I cant at the moment but I am able to do it tommorow, all i know is its at 300watt PSU
 
YES It can handle a 4670 video card :)

But i suggest instead of getting a 4670 video card, go for the
4770 512MB GDDR 5 instead. Though a bit more pricey but I can
assure you for a 30 dollar price-to-performance difference is
really worth it. The 4770 is much faster than 4830 and performs
the same as the high end 4850 model.
 
I wouldn't bet on that Power Supply being good enough.

If you do keep this PSU unit and add the HD4670 you should run a gaming benchmark in a loop to stress the system for a few hours. It's better to know up front if you have a power supply issue.
 

Would i need to change the PSU then?
 

I just opened my case and it says +12v1/18a +12v2/18a -12v/8.3a is it fine?