Which processor and operating system is better?

I am planning to buy a gaming laptop and I want to know. Which of these processors will give the smoothest gameplay?

Core 2 Quad Q9100 (2.26GHz, 1066MHz FSB, 12Mb L2 Cache)

Core 2 Extreme QX9300 (2.53GHz, 1066MHz FSB, 12Mb L2 Cache). Am I right in thinking this one has only two cores?

Also which is best for the smoothest gameplay? Windows Vista Ultimate or Home Premium because I have had mixed reviews about it. Cheers.

All versions of Vista will offer the same performance. I bought Ultimate and found that it has absolutely nothing I needed over the Home Premium version.

I would suggest to get the first processor out of the two and overclock it. Then skip vista completely and go with windows 7 if you want a new OS.