above is correct.
Should be no issues such as throttling.
Depending on the game you will be limited by either GPU or CPU limitations in general. Some games will even flip-flop between a CPU and GPU processing bottleneck at times (for example, Starcraft 2 should start by GPU bottleneck, or just 60FPS cap if VSYNC is ON 60Hz monitor, then you should drop due to CPU bottleneck during battles due to all the battle calculations).