Yes and no, depends on the game:
http://pcpartpicker.com/b/wxccCJ
Game benchmarks: (all @1080p)
All games below here were with 4GBs of Ram
Skyrim: Settings: Ultra Preset Avg:52 Min:35 Max:62
TF2: Settings: Default high settings. Avg:121 Min:0 (probably a loading screen) Max:300
GW2: Settings: Best Appearance Preset Avg:50 Min:8 Max:80
WOW: Settings: Ultra Preset Avg:76 Min:62 Max:96
Minecraft: Settings: High Settings Avg:191 Min:0 (loading chunks) Max:393
Rust: Settings: Fantastic Avg:64 Min:0 (being dead) Max:107
Battlefield 4 (x86): Settings: Low (x86 forces lowest settings it seems) Avg:115 Min:70 Max:201
Battlefield 4 (x64): Settings:Medium , no AA Avg: 94 Min: 49 Max: 168
Battlefield 4 (x64): Settings:Ultra Preset Avg: 40 Min: 19 Max: 66
Diablo 3: Settings: High, Medium Shadows Avg: 101 Min: 9 Max: 135
Watchdogs: (driving around town) Settings: High, see pics Avg: 35 Min: 30 Max: 42
Watchdogs: (boating around like a maniac) Settings: High, see pics Avg: 37 Min: 30 Max: 45
World of Tanks: Settings: Maximum, With FXAA Avg: 51 Min: 0 (most likely a loading screen when i went back to the garage) Max: 63
World of Tanks: Settings: Maximum, Without FXAA Avg: 47 Min: 35 Max: 62
ARMA2: Settings: Very Low Avg: 74 Min: 65 Max: 83
ARMA2: Settings: Normal Avg: 35 Min: 20 Max: 43
ARMA2: Settings: Very High Avg: 11 Min: 9 Max: 13
All games below here run with 8GBs of ram
FIFA '15 (demo): Settings: High rendering, 2x MSAA, no FPS cap, windows aero turned off Avg: 134.407 Min: 56 Max: 163
Witcher 3: Settings: Mix of Ultra and high, see pic Avg: 40-45
GTA V: Settings: high/very high Avg: 53-65