crystalklear64 :
I was browsing the CPU threads and saw this:
What does that last sentence mean? Is the HDD a limiter to the CPU in some way?
Thanks.
I'll use an old, old example that may help put this stuff in context:
Your Hard Drive and Optical drives act like a filing cabinet - That's where stuff lives that you aren't working on at the moment. If you need that stuff, you have to go get it and put it on your desk before you can do anything.
Your RAM (Memory) is like the space on your desk. If it's already on your desk you can work on it immediately, yah?
The CPU is the one actually doing the work.
OK - When you're opening a program, or doing something completely new (like transitioning to a different area in a game) your computer has to go get the new information from the Drive(s) and put it into memory before your CPU can do anything. As pointed out above: In this particular instance, the system has to slow down to the speed of the Drive - Information has to hit memory before your CPU can do the work. During this period of time, the advantage of having a faster CPU is nullified by the (relatively) slower drives, yah? Because even if the CPU were slower, it's still faster than the Drive can provide information to work on.
This situation is the reason some gamers will spend big bucks on a RAID array of small, fast hard drives: Faster seek and transfer rates mean the data hits memory faster and the CPU can get to work sooner. Think about that in a gaming situation: If your computer can load and render the area before the other guys' can you may gain a couple seconds where you can kill him while he's still loading the game. Free Frags!! And if you want, sometimes you can camp and really piss off the people around you by getting them into a cycle where you kill them, they reload, and you kill them again while their computer is reloading again, etc etc etc....
BUT!!!!
The above situation only occurs once in a while. Most of the time the game/program/whatever is already loaded into active memory. So most of the time your faster CPU isn't limited by Hard Drive I/O
('Input/Output') So, except during the limited times your comp has to get data from the drives, your faster CPU is free to work. And since your faster processor is free to be... well... faster for the great majority of the time, then it's still better to have a faster one than a slower one.
Hope that helps, anyways...
- Also, this is why old school single player guys
(like me) don't bother with RAID arrays on our home PC's because (in my case) I get to take an extra swig from my coffee cup while the computer is working.