Media Content Encoding
As we all know, processor performance during media content encoding and decoding depends neither on the cache memory nor on the front side bus frequency. Nevertheless, it is not only the clock speeds that determined this particular positioning of the new Intel processors on the results charts. 45nm CPUs outperform their 65nm counterparts due to microarchitectural improvements: faster processing of floating-point numbers and, most importantly, of SSE instructions used in contemporary codecs. As a result, new-generation processors perform much better than their predecessors from the same price range.
Of course, the increased performance of the inexpensive Intel processors severely affected the marketing prospects for AMD CPUs. For example, Athlon 64 X2 6000+ now loses even to Pentium DC E5200 during video and audio encoding, which makes is far not the best choice for this type of work. However, triple-core Phenom X3 8750 can boast quite competitive results against Intel’s dual-core solutions. Codecs’ work can be easily slit into multiple parallel threads therefore the additional computational core of AMD Phenom X3 wastes no time.