how do you know if your PSU is a bad one?

[tototororororo]

Hi all,

I know it may sound stupid but how do you know if your power supply is good enough to run graphic cards like GTX 750 ti?

my PSU is PS-6451-5AE. It came with my pre-built computer. It says on the label that it works up to 500w. So I thought GTX 750 ti would work with my PSU but some of my friends are telling me to upgrade PSU. Is it absolutely necessary? or is it good as it is?

Thank you for your answer!

 

[Killer MO]

No.no no. Get a good psu from a brand like corsair, super flower or Sirtec.that psu isn't recommended for custom builds.

 

[BadActor]

Generally, the PSU's that come with cases are really cheap and poor quality. They can fail well short of reaching there advertised wattage and possibly damage other components. The GTX 750Ti doesn't require more than a 300 watt PSU and yours would probably work ok, but for piece of mind, I would replace it.

 

[bicycle_repair_man]

Tom's Hardware has a PSU tier list at http://www.tomshardware.co.uk/forum/id-2547993/psu-tier-list.html, which sorts the men from the boys.

Certain brands, such as Corsair, produce some great PSUs and some awful ones, so just because it's a branded PSU that doesn't mean it's good.