From a gamers perspective, quad core CPUs' actually have a very large disadvantage.
1) Windows isn't natively optimised for quad core processing, which means the game natively has to support it or you will actually see a performance
decrease while using a quad core for gaming.
2) 90% of games STILL are not optimised for quad core processing. So unless 2 of your quads' cores' are faster in clock speed than a dual core, the dual core will out-perform the quad core in gaming.
3) Dual cores will also over-clock better than any quad core on the market, further increasing the performance gap in favour of teh dual cores for a gamer.
http://www.anandtech.com/cpuchipsets/showdoc.aspx?i=3559&p=10
And the real benchmarking sites, which don't lie and are well trusted, blatantly show AMD being the leader in gaming performance still.
Not a surprise. AMD's strength which works well for gaming has always been it's low cache & FSB but high multiplier.
Race cars vs trucks basically, intel with it's higher FSB and cache can carry a larger load in the 1 trip, so they're the trucks.
Having the responce there out of a higher multiplier is what makes AMD's so good for gaming.
My e7300 Core2Duo oc'd to 3.33ghtz STILL runs the stock multiplier of 10.
My FSB is raised to 333 / core.
Back in the days of the athlon 2600+ x1 they'd already hit 100 Mhtz FSB x20 multipler = 2000 Mhtz, which was the actual clock speed of the processors.
Or was it 2.4ghtz? either way you get my drift, AMD has always been superior for gaming because of different systems for speed implementation and intel never really caught on, preferring to tempt corporate buyers with their non-gaming benchmark results.
That works extremely welll for intel actually, since on bulk orders they're actually cheaper than AMD.