Pentium Dual Core is a Core 2 Duo (or a Core Duo, in the case of some mobile versions) CPU with a lower internal clock rate and less L2 memory cache. In this tutorial you will learn the main technical specifications of this processor and tables with all Pentium Dual Core released so far.
Intel recently changed these processors' name, from "Pentium Dual Core" to just "Pentium". So, "Pentium Dual Core E5200" and "Pentium E5200" are exactly the same processor.
Pentium Dual Core for desktops is a dual-core processor based on Core microarchitecture, the same one used by Core 2 Duo. Watch out to not make confusion between Pentium Dual Core and Pentium D. Even though both are dual-core CPUs, Pentium D is based on Intel’s previous microarchitecture, called Netburst, the same one used by Pentium 4. If you want to learn in details about the microarchitecture used by Pentium Dual Core read our
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tutorial. To compare it to Pentium D’s microarchitecture, read
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and
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Pentium Dual Core uses a 1 MB L2 memory cache (2 MB for some 45 nm processors), which is shared between the two CPU cores (Intel calls this implementation as “Smart Cache”), and works externally at 800 MHz (200 MHz QDR, i.e., transferring four data per clock cycle) or 1,066 MHz (266 MHz QDR). Mobile models work externally at 533 MHz (133 MHz QDR), 667 MHz (166 MHz QDR) or 800 MHz (200 MHz QDR).
In contrast Core 2 Duo processors have at least 2 MB L2 memory cache – with several models having 4 MB or 6 MB – and, even thought there are models running externally at 800 MHz, the vast majority uses a 1,066 MHz external bus, with newer models running externally at 1,333 MHz or 1,600 MHz.