Saw the pics... those patches look bad. Install updates, though personally I played farcry version 1 on all 3 of my rigs with no patches.
Also a sign of overheating memory or core. Not to scare you but noticed this on my MX 400 (pine) and an MX 440 (XFX) before both cards went kaput. That was while playing GTA vice city. I used to get black specs in the sky.
No cause to get alarmed. uninstall drivers and do a fresh install. Version 77.something (forgot which) works well with 6xxx cards. For farcry you won't need the latest version as some claim the newest drivers stress older cards, but I dunno bout this... just what I heard.