New Dell XPS Studio 1647 (I think)

I'm getting this next month (or the order says I am), and I have a couple questions reading this forum:

1. I'm getting an i7 Quad Core -720, that's still a 1647 right? I keep reading that the 640 is what that goes up to, but am not sure.

2. What is throttling? I do a search on the internet and all I get is Drag Racing info LOL. Is that when the fan starts to spin super hard?

3. I've got a 1640 that I'm selling once I get it....it's new from Dell because of an exchange so no warranty (but can be upgraded by the buyer), what do you think is a fair asking price? It's a P8700 2.53 Core 2 Duo, 4GB RAM 320GB HD, 512MB ATI 3670. HD screen, etc.

Thanks guys!!

 

1645's are Quad Cores I.E. 720 & 820 QM's
i7 620m and i5 520-540's are dual core 1647's

Just some FYI

 

Ah okay. Thanks. So I'm getting a 1645 i7-720QM then.

So I'm guessing when I get it I'll have to ask Dell for a new power adapter then? Because I don't know if it comes with the 90W or the 130W.

 

yeah, the easiest way to get your adapter is to call them after you receive your order and say your 90w adapter is overheating and its really hot and you are worried of fire hazards and they will sent you a 130watt right away.

 

Cool, thanks! I'll do that today...seeing as my laptop is going to be at my house on Thursday....a whole month before they said it would be shipped. Which is why the laptop was on sale in the first place...NICE