Everything about this computer is great, except for one fatal engineering flaw.
Too Long; Didn't Read at the bottom.
I got the Intel Core i7-2670 QM so that I would have a very fast CPU that would keep up with technology requirements for a long time. At the time, it was ranked as the fiftieth fastest CPU, a little over a year ago. There was a game I liked to play that wasn't super graphics intensive, but I wanted to be able to run the graphics at full, which I couldn't do on my previous computer. When I got this laptop, it ran beautifully, I was so happy. For about three months.
The problem is that the air intake ports are on the bottom of the computer, and with only a few millimeters of clearance and small fans, there was no way it could cool the powerful CPU sufficiently. When the graphics and performance started going to heck, I couldn't figure out what was wrong for a long time, until I got a laptop cooling pad for it. Problem solved.
It's apparent as evidenced by it working fine for three months and then suddenly deteriorating in performance that the CPU or perhaps some other component was damaged to some extent by the overheating, which finally led to its not being able to function at its previous level. It was able to perform at overheated levels for a time, but after some damage, it could no longer do so. I'm sure that has taken some time off of its lifespan.
If you're going to give the option for a high powered CPU, make sure the computer is designed to handle that kind of power and can adequately cool itself. Who the heck ever thought it would be a good idea to put intake ports on the bottom of the laptop in the first place? It's a "lap" top, so if it's on your lap, wouldn't that be blocking the ports completely? Why why why? I don't even put it on my lap anymore when it would be convenient to do so for precisely that reason. I can't afford to have it overheat anymore and risk further damage.
If you put this kind of processor in a desktop you have a couple large high speed fans cooling it to give it optimal performance and protection against overheating. In a laptop with poor venting like this, it stands no chance. The left side of the keyboard is even very hot to the touch without the cooling pad, and quite uncomfortable. In fact, that's what ultimately tipped me off to the possibility that it was overheating. It simply shouldn't have been that hot.
After buying several computers for my family from Dell over the years, we're switching to a different manufacturer next time.
TL;DR The air intake ports are placed on the bottom of the computer with poor fan power, which is insufficient to cool the high powered CPU it has. It ended up damaging it to some extent, and now it can't run it in high performance mode without a cooling pad underneath it. Extremely sloppy oversight if any engineer actually looked over this product package when the component options were tossed together.