If a system doesn't have sufficient memory to buffer large blocks of data (say1GB) then the chip is stalled and all that extra speed is useless. Even if you have a 128mb dimm in one socket and a 1gb in the other, there is a delay as the signal is sent over too the other board.

So it is important to max out both slots a 1gb memory.

I had a 1.66 that was significantly faster than a 2.66 until the latter received a memory upgrade.

Fast processing speed doesn't speed up the delay in internet data transfer either. For most users on the web, all that extra processing speed above 1.66 is worthless. For those doing graphic work, or other complex processing and shifting of data-they can use the processing speed.

I don't see how a 6.0ghz chip speed would be much faster than a 3.0 without starting to streamline the resistance points in the motherboard and between the hard drives and the processor. As a result, the industry has sort of diverted attention to accessories like hard drives and dvd drives. Your response speed on your hard drive is just as important as your processor if you are working with graphics or large saved blocks of data.

What most internet surfers really want is a faster DTR (data transfer rate). Cable is very unreliable and depends upon the users you share the local line with at prime time it can get very slow. DSL is better IMHO, but the TELCOMs are in financial trouble and so haven't been investing enough in upgrades. As a matter of fact, the present connection I use with a 2mb DTR is no longer offered, and new connects can only get a 1.5mb DTR. So the good ol' day of the late 90s where everyone was going to get a 1gb DTR on newly developed technology just isn't going to happen anytime soon.

Throw your money at memory, upgrades and a good service provider and you won't miss the processing speed they're not offering.

;-)