Depends on the program and depends on what graphics card your running

Lats say your using 3d mark to test your pcs your old pc had a ATI X800 agp 512MB gfx card and your new pc has a Geforce 840 ...

Symponic/Gothic metal for life

I like:

Theatre of Tradegy (older stuff)
Nightwish
Therion
Tristania
Sirenia
and a few others

For the last month At home:

GTAIV (Xbox 360)
Bioshock (finished)
Vampires the masquerade bloodlines (Yes its old finally got some time and finished it)
Rainbow six Vegas 2 (finished)
And some ...

I've been using the firefox 3 beta for a while now it works great,but I've found a small bug if your using windows blinds( skinning software) it tends not to draw/render) some of the menus correctly(e ...

Personally Ill go intel,but if you want something dirt cheap that will do the job there's nothing wrong with AMD it does what its supposed to.

Intel However is faster has ALOT more overclocking hea ...

It depends what you want to do with it at the end of the day,

If you want something that you just want to mess around with,and dont have any prior Linux experience,Ubuntu is your best bet,its easie ...