(23/08/2010 02:36 AM)SkyDX Wrote:  You know, I was also one of the people who thought, OS uses less RAM = better, but after someone at AeroXP carefully explained it to me, I came to the logic assumption that empty RAM = wasted RAM, the more RAM a OS can use, the better it will run.

Games and memory demanding apps are no problem because Vista and 7 can unload memory very fast thus creating no bottleneck^^

That's what most people who seem to have limited understanding of things think.

The reality is, even without Vista's cache, it's still a massive RAM hog (disable Superfetch, and perform forced deallocations and see for yourself).
Yes, RAM perhaps sits there idle doing nothing, however, Vista's caching strategy is pretty horrible.  One thing I really hated was that when I quit a memory hogging application (like a game), Vista's Superfetch would immediately kick in and thrash the HDD for a few minutes.  In fact, Vista seemed to thrash the HDD every now and then regardless of what I was doing, really annoying.
Unloading memory is fast, but reading from HDD isn't, and it also suffers the problem that such I/O requests cannot be done in parallel with anything else (try performing two IO operations on the same HDD at once, it'll be more than twice as slow).