Is this a good gaming desktop?

I am going to play these games: Red Faction Guerrilla, Bioshock 1 %26amp; 2, Left 4 Dead 1 %26amp; 2, Dead Space, Gears of War, Mass Effect 2, and Dragon Age. Hopefully at 1080p on max settings. Will all of this run well? By well I mean above 35fps always? Thanks ahead, here's the build.





# Apex: [ Vortex 3620 ] ( Front USB, Audio, eSATA ), Black


# Antec EarthWatts, 650W Power Supply [ PSU ]. Model: EA650


# Intel Core i7-860, LGA 1156, 2.8GHz, 64-Bit Quad-Core


# ARCTIC COOLING Freezer 7 Pro Rev.2 CPU Fan


# MSI Intel P55, 8GB DDR3 Max, CrossFireX, RAID,1394, eSATA, Audio, GbLAN. [ P55M-GD45 ]


# 8GB (4 x 2GB) DDR3 at 1333 MHz Dual Channel


# Radeon HD 5850: 1024MB [ DirectX 11 Support ]


# Xtreme Performance in SLI/CrossFireX Gaming Mode Supports Single Monitor


# Hitachi 1000GB Serial ATA-II 7200RPM w/ 16MB Buffer


# Standard Setting : Non-RAID


# 22x Dual-Format/Dual-Layer DVDRW Driver


# High Definition 7.1 Digtial Surround Sound


# Onboard Gigabit LAN Network


# Window 7 Home Premium - 64 Bit Edition - DVD set





Oh, yeah. I also want to eventually add another 5850 and crossfire them. Will the psu be enough?|||no need to get another video card, it will play all those games at 1080p no problem over 35 fps. The psu could handle 2, although you would probably want more Watts, but stick with 1 5850 and youll be perfectly fine, otherwise great computer setup|||ya itll work fine, similar to my friend's build|||With that spec, you'd be looking at 200 FPS.