AMD Phenom II x4 960T or something if im right should do you well on your light everyday usage even with games involved, and just go for a Sapphrie HD 6850 toxic or 6870 whichever is cheaper, it should last well enough if you ever do light gaming, and the phenom II x4 is good also for other light activities, although i like the bulldozer my self but still overall good
imo best amd cpus:
entry level budget apu, no dgfx : amd a8 3870k/3850 or a6 3650 (use ddr3 1600 ram for best cpu&gpu performance)
cheap amd cpu, no igp: athlon ii x3 445 (may be combo it with a 970 mobo, 4 gb ram and a 6770)
mid-range: phenom ii x4 960t b.e., 970 b.e., x6 b.e.,
high end: fx 8120
if your friend is into gaming, here's tomshardware's gaming cpu hierarchy chart: http://www.tomshardware.com/reviews/gaming-cpu-overcloc...