With the Dell 3007 you can tell your Vid card to upscale to 2560*1600, from whatever it's doing in the game. Like normal monitor scaling. But with the video card.
The difference in memory isnt really noticeable with those cards.
You would get hugely better performance with the upgrade, I'd be loath to try play recent games on those cards- it would be possibly, but the graphics would probably be...
I'm after the most powerful portable with a 13" or so screensize. Which is why the Dell seems a good idea. Games playing would be useful, but isnt totally necesary.
I've been looking around and it seems the Dell m1210 is the best, powerwise (and a bit of gaming). Any other offers? I saw the LG Xnot TX, but can't find it for sale in the UK.
So you've had a computer that is obviously malfunctioning (overheating) for a year or more, while still in warranty, and neglected to do anything about it, and now it's failed for the reasons you ignored and it's out of warranty...