Re: GTX 470 or HD 5870?
Get a 5870. I went from a GTX260 216 core OC'd edition to a 5870 and it is amazing. Really, really fast card and runs very cool. No need to OC as it runs everything maxed out @ 1920x1200, ie Crysis, warhead, BFBC2, MW2.
Gigabyte GA-990XA-UD3 motherboard
AMD Phenom ll X4 965 BE OC'd @ 3.6GHz
Vendetta cooler 120mm fan
16GB G. Skill Ripsaw DDR3 1600MHz memory
Powercolor 5870 OC'd to 949/1255
(OC'd only when gaming of course)
11.8 Cat drivers
650W power supply
Seagate 1TB 7200RPM SATA HD
Sony dual layer 16X DVD/CD Writer
LG 8X Blu-ray Writer
HP w2408h 24" monitor running @ 1920x1200 native rez
Win 7 Ultimate 64bit