You can see my last post, I have actually benchmarked this stuff. However, you should get your laptop, try the vBios fix, and see if you get throttling. It is a pretty sad situation at stock, but with a good cooling system you can fix it with modifications. I run the modified vBios, a 20% OC, and on the very few games that hit 78C I use my modified fan profile. My laptop works great with no throttling, and is easily much faster than a 6990m system. Granted, I did a lot to "fix" it from stock, but it is an awesome machine when running at top speed.