The Athlon II X2 235e Vs. Pentium Dual-Core E5300 are processors, or central processing units, from semiconductor manufacturers Advanced Micro Devices and Intel Corp., respectively for application on desktops. The Athlon chip was released in 2009 and the Pentium chip made its debut the year before. The 235e and E5300 share many features and specifications, although the AMD computer chip slightly edges out the Intel offering.
Manufacture
The Athlon II X2 235e and Pentium Dual-Core E5300 bear the "X2" and "Dual-Core" designations, respectively, because they are dual-core processors, meaning that they each have two processing units. They also used the same 45-nanometer manufacturing process. For microarchitectural differentiation purposes, the 235e is codenamed Regor while the E5300 uses the Wolfdale-3M codename.
Speeds
In terms of clock speed --- the rate at which the processor executes its basic functions --- the Athlon II X2 235e runs at 2.7GHz while the Pentium Dual-Core E5300 is slower at 2.6GHz. Also, the 235e uses AMD's HyperTransport link instead of the front-side bus interface widely used in the 1990s to 2000s, thus achieving a data transfer speed of 2GHz. The E5300, using the FSB, has a much slower data transfer rate at 800MHz.
Cache and Power Consumption
Each Athlon II X2 235e and Pentium Dual-Core E5300 has two caches, which are labeled as Level 1 cache and Level 2 cache. These are small memory banks that the CPU uses for high-speed access to the desktop PC's most frequently used data. Each 235e has a 256KB L1 cache and a 2MB L2 cache. Intel only lists the L2 cache of the E5300 as providing 2MB of storage, the same amount as its AMD counterpart. The 235e is more energy efficient, with a peak power consumption of 45 watts compared to the E5300's 65W.
Technologies
The Athlon II X2 235e and Pentium Dual-Core E5300 are 64-bit processors, meaning that they use a 64-bit instruction set for accommodating data. Each CPU has virtualization for combining multiple computing environments, power saving yet performance boosting technology and a security measure against viruses. AMD calls them AMD-V, Cool'n'Quiet and NX Bit, respectively, for the 235e; Intel labels such technologies as Intel Virtualization Technology, SpeedStep and Execute Disable Bit.
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