[Win XP] About my computer's config

[gizmo27]

Hi,

I'd like to buy Amnesia online but I don't know if my computer is obsolete or not.
I've gone on Amnesia's official site but I didn't understand what was written about the processor min config
So I gonna give you my computer config now :

=> AMD Sempron™ processor 2600+ (1,6 GHz I think)
=> 1,43 Go RAM
=> graphic card : ATI Radeon X1650 Power color

My question is almost about my processor : is it obsolete ?

Another question : the game can run if I put a smaller screen resol, if I decrease the general graphic quality and if I put some effects off ?

Thanks a lot to answer me.

Regards,
Gizmo.