AMD Athlon II X2 255 Processor
The AMD’s Athlon ii X2 255 is clocked at 3.1 GHz, and is a dual core processor for moderate to high end computing. Its low cost and ability to fit in the existing AM2+ and AM3 motherboard socket makes it attractive.
The Athlon ii 255 has 1 MB of L2 cache to each of the two cores giving it a total of 2 MB of L2 cache. The Athlon II X2 255 has integrated memory controller which reduces the processor to memory latency and increases the processor to memory speed. This is one area where Athlon ii 255 processor will perform better than the Intel Core 2 processor from Intel. The Integrated Memory controller partly makes up for the lacuna created by low L2 cache.
The communication with the chipset is using fast HyperTransport differential Bus at 2 GHz.
Base upon the Regor Core, the Athlon ii X2 255 is built with 45 nm technology and consists of 234 million transistors. It supports many other features including the AMD virtualization technolofy and the 64 bit supprt. The Virtualization technology helps if we have multiple operating systems running. The Athlon ii X2 255 also has support for the advanced multimedia instructions which include AMD’s SSE4a instructions ( Intel has its own SSE4.1 and SSE4.2 instruction sets).
The Athlon ii X2 220 at 2.80 GHz has been more popular in the Regor core. Howeverm you can expect a 10% performance improvement with the Athlon ii X2 255 as compared to the Athlon ii X2 220
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