Tim uses Adobe Premiere CS6 for editing video and wants to decrease his rendering times. Leo says Tim needs to figure out what the weak link is in the chain that's causing the bottle neck, and it could either be the processor, the graphics processor, the RAM, or the hard drive. Boosting his video card will help. Since he's boosted his RAM and installed an SSD, Leo has a hunch it's the graphics processor. If it's slowing down while encoding, that could point to the CPU.
The chatroom recommends Process Explorer, which will tell him which hardware is being used by which process.