New to flipping PC's

[canadramia]

There is a computer on craigslist for $25 USD. It comes in a beat up dusty case but inside there is a GTX 460 smart edition, and an AMD phenom II (don't know the exact model) on a gigabyte motherboard, it also comes with a power supply and fans. The only thing it doesn't have is a hard drive but that is easily attainable for cheap. My question is it worth trying to upgrade or is it too obsolete to play current titles. If I could get it playing E-Sports titles like CS:GO or Fortnight, League ect... I'd be happy with that. 

[Shimejii]

Thats not worth saving.

[canadramia]

Is there a place to see benchmarks of the components I'm looking at so I can make more informed decisions rather then having to come to you lovely people each time?

[TetraSky]

There's plenty of such places online if you just google the name/model of the CPU or GPU.

While it's not an actual indicative of performances, I often check Passmark to see the score of a given CPU/GPU and compared it to what I have/can have for a bit more.

After that if I want to see gaming performances, I just check youtube.

[canadramia]

Thanks everyone super helpful!