Which of these confs is the best for games?

Hi all,

please help me to choose. PC would be mostly for games!.

AMD Phenom II X4 945 Quad-Core /3.0GHz, 2MB L2, 6MB L3, 95W, BOX, AM3/
AsRock AOD790GX/128M /AMD 790GX/
G.Skill 4GB (2x2GB) 1000MHz CL5 PI
Gigabyte Radeon HD4890 OC 1024MB DDR5 /256bit/ DP, HDMI, DVI
Western Digital 500GB 7200rpm 16MB cache SATAII [WD5000AAKS]
LG GH22NS50 SATA SecurDisc
OCZ StealthXStream 500W SLI rev.2
(forumpc.pl)

AMD Athlon II X4 620
ASRock M3A785GXH
GoodRam 2x2GB 1600MHZ
XFX Radeon HD4890 1GB
Samsung 500GB 16MB Cache F3
Samsung SH-223B SATA
OCZ ModXStream Pro 500W
AC Freezer Xtreme Rev. 2

(purepc.pl)

AMD Phenom II X3 720 /2.8GHz, 95W, BOX, Black, AM3/
AsRock M3A785GXH/128M
Patriot 4GB (2x2GB) 1600MHz CL7 LLK
Palit GeForce GTX 260 Sonic 896MB DDR3 /448bit/ HDTV 2xDVI
Samsung 500GB 7200rpm 16MB cache SATA-II F3
DVD: SH-S223L SATA LightScribe (black)
Cooler Master Elite 335 (Black)
OCZ ModXStream Pro 500W
(forum.dobreprogramy.pl)

Intel Core2 Quad Q8300 (LGA775, 2,5GHz)
MSI P45 NEO2-FR
2x2 GB DDR2 Patriot (800MHz, CL4)
MSI Radeon HD4870 1GB DDR5/265bit
Seagate Barracuda 750 GB (32MB, 7200rpm)
LG GH22NP20
Aplus Monolize II
OCZ StealthXStream 500W

(nvision.pl)