I have a Pentium D 925 3.0GHz overclocked to 4000MHz.

I was wondering what the difference between Core 2 Duo & Dual Core?

E4600 2.4GHz
http://processorfinder.intel.com/d [...] Spec=SLA94

Pentium D 925 3.0GHz
http://processorfinder.intel.com/d [...] Spec=SL9KA

They both have the same Bus Speed, the only difference I see is ones 95w & the other is 65w

The Core 2 Duo is faster on the CPU Charts
http://www23.tomshardware.com/cpu_ [...] &chart=435

I also have a Athlon 64 X2 4400+,
Is the 4400+ better then the Petium D 925?

Thanks

Firstly, there's a huge difference when you say Dual Core and Pentium D. There's a series of cpu called Core2Duo, which is newer and much, much, faster than the older Pentium Ds. A 1.8GHz C2D can take on a 3GHz Pentium D in some cases, while taking less power.

Pentium D belongs to the Pentium family while the Pentium Dual-core belongs to the C2D family. There are newer C2Ds out now, so the E4600 is rather outdated.

And yes, the 4400+ is better than the Pentium D 925.

http://www23.tomshardware.com/cpu_ [...] &chart=435

The Pentium D is a Dual Core isn't it?

The E2200 2.2GHz is a Dual Core &
the E4500 2.2GHZ is a Core 2 Duo
http://www.newegg.com/Product/Prod [...] 6819115031

same specs, whats the difference? (besides cache)

Is the Pentium D in the same class as the E2200?

Is the E2200 better then the Athlon 64 X2 4400+?

No, Intel decided to do some confusing naming scheme.

There are 4 Pentium Dual-Core series: E2140, E2160, E2180, and E2200.
Ex: http://www.newegg.com/Product/Prod [...] =Dual-Core

The Pentium Ds are different, they belong to the Pentium family. While D does mean 'dual-core', it's not the same.

Yes, take a look at some of the benchmarks I showed you in the link above.

Intel.com shows Pentium D as a Dual Core
http://www.intel.com/products/proc [...] tium_d.htm

Yes, Pentium D is a dual-core, meaning there's 2 cores.

The name Pentium Dual-Core is also a dual core cpu, but from the C2D family. Intel just decided to make it confusing to us consumers. There is a huge difference between Pentium D and Pentium Dual-Core (Dual-Core as in the name).