We all know that video cards are the most important aspect in gaming, but what effects "normal" Windows performance? For example, what determines how fast Windows displays a "New >" menu, or how fast IE starts up, or why the computer stutters around for 10 seconds after closing or opening a big application? etc etc. Is it CPU speed, memory, internal cache, HD speed, etc? Obviously it's all of those put together, but I assume some have a bigger impact than others. Any help would be appreciated!