Archive for the ‘Athlon’ Category

Intel Core 2 CPU architecture

Saturday, February 21st, 2009

For the past several years the hype machines have been long awaiting for the new processor architecture from Intel. The new architecture budded as Core 2 is a radical shift for the company that was once the main proponent of ramping up the CPU frequency. The first desktop product Core 2 promises to be much faster compared to the Pentium D series and even faster compared to Athlon 64 FX-62. These last tests were however not completely true as the FX-62 was actually an overclocked FX-60 that ran on DDR400 and not on DDR2-based FX-62. Therefore it is very much clear from all the industry scuttlebutt, sanctioned testing and all the leaks that Core 2 offers faster performance. There still are questions about how fast it is really, when in a wider array of applications than the previously tested results.

The answer remains that the Core 2 micro architecture had been summarized of its high points before it was launched. The Core 2 actually owned much of its inheritance to the mobile Pentium M processor line of Intel. However, the first iteration of this architecture that is called as the Banias was the creation of Israeli design team of Intel, which means that the core 2 is not just another iteration of their Pentium M. rather it borrows a little from their old Netburst architecture while adding some excellent additional enhancements for the new architecture. This has resulted in a processor that has substantially shorter instruction pipeline compared to Netburst. The entire instructions performed per clock cycle which is substantially higher and so even if Core 2 processor is running at lower clock frequency than any previous Intel desktop lines it would run applications much faster. Additionally the Core 2 is also much power efficient.

The main goal of Intel regarding the mainstream CUP is to maintain around 65W versus 130 w of high end Pentium D 940 or 90 to -95W of mainstream Pentium d or some extreme editions of CPUs. As a result what you get is a CPU which uses much less power while also running applications significantly faster. This fast speed of the processor has also enhanced by the excellent architecture of Core 2. its architecture completely differs from that of Netburst micro architecture that is used in Pentium 4 and Pentium D processor. The Netburst had used very deep pipelines which can be nearly 31 stages for the latest CPU to establish deeper and higher frequencies. Ultimately this architecture ran into brick wall with higher frequencies that actually consumed too much of power while also generating to much of heat. Intel had never shipped a 4-GHz CPU officially even though they spoke about the processor beyond 5-GHz a few years ago. The Intel Core 2 strives for a great efficiency while also offering outstanding performance considerably above past Intel products. This is because their Core 2 architecture is based on their specific goals which include fourteen stage pipelines, four instructions per clock and macro-ops and micro-ops fusion which together contributes towards its fast performance.