Intel Dual Core question?

[rehlax]

Hey guys, im buying a completely new computer and im just wondering if intels Dual Core are any good for gaming.
If im using a 3.4GHz Dual core proccessor and the game / program doesnt support the whole "dual core" features etc will the game still run with the same capabilities as a 3.4ghz?
I dont think im being clear so ill try explain in more detail
Just pretend i have 2 exact same computers but one proccessor is Pentium 4 3.4GHz and the other is Pent D Dual Core 3.4GHz, I start up World Of Warcraft or any program for the matter will it still run with the same Capabilities of the Pent 4 or lower because of "reason here".
Everything else in the computer is pretty average - high performance eg, radeon x1800xt, 2gb ram, cooling etc.

All help/replies are GREATLY appreciated.
Thanks to all in advance.

 

[Nitestick]

yes a 3.4ghz Pentium D will perform like a 3ghz Pentium 4. you would be better off with either an Athlon X2 or a Core 2 Duo though

 

[StillwaterIT]

Why buy a pentium D, when you can have a pentium core 2 duo for a few $$ more... The E6300 is barely over $200, and is a TON faster than any pentium d...

 

[Nitestick]

pentium core 2 duo

sorry to be pedantic but i want to cut this little misnomer off before it gets started. it is just Core 2 Duo, the Pentium brand has been dropped. only mentioning it before that ends up being a common phrase like how people talk about "centrino processors" when there is no such thing