By now there are many different versions - even if clock speed and Stepping are not taken into account - of Intel's Core 2 series processors. PCGH compares most of the available models from Conroe to Wolfdale - with each CPU tested under the same conditions.
Does cache size matter? [Source: view picture gallery]
The variety of Intel's desktop CPUs became quite confusing over the years. Generally a CPU gets more powerful as the processor number - and with it clock speed and Cache size - is getting bigger, but some of the series have some secrets to offer nevertheless. Another question is, if you better take a cheaper CPU like the E7300 or a more expensive Core 2 from one of the earlier series. After all the brand-new 45 nm CPUs with the Wolfdale architecture had to endure several improvements like drastically accelerated division, support for SSE4.1 (with an appropriate BIOS) and other things.
PCGH checks it out and compares the seven CPUs of the Core 2 family listed below. They all have the same clock and Front Side Bus.
• Intel Celeron Dualcore E1400
• Intel Pentium Dualcore E2180
• Intel Core 2 Duo E4400
• Intel Pentium Dualcore E5200
• Intel Core 2 Duo E6700
• Intel Core 2 Duo E7300
• Intel Core 2 Duo E8600
We chose 2 gigahertz at 200 MHz FSB, so the CPUs have to support a multiplier of 10. Therefore the original Allendale series (E6300, E6400) didn't match our requirements because those CPUs only had lower multipliers.
Additional details about the processors can be found in the appropriate CPU-Z screenshots on the next pages.