For system info, I would recommend two programs:
GPU-Z and
CPU-Z. Names should explain the programs fairly well. I don't use it, but I have heard that Everest has a good free version.
My poor old desktop is still chugging along:
Q6600 @ 3.15Ghz
EVGA 680i LT (damn thing has two dead RAM slots; I'd rather put money into guns than replacing it.)
4GB G.Skill Pi Black
3TB (WD Black, 2 Seagate Barracudas)
HAF-X with every fan mount filled
EVGA 560Ti (my old 8800GTS 512's worked great for everything but The Witcher 2)
Coolermaster 1200W Silent Pro Gold (free is good, right?
)
EVGA Superclock or Coolermaster V6 (both were free to me and are roughly equal).