- Jan 21, 2013
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The memory bandwidth has only tripled on Intel's CPUs since 2004, a space of 9 years. The Pentium 4 HT Extreme supported 8.512 GB/s of memory bandwidth, while the latest Intel Core i7 Extreme Edition only supports 25.6 GB/s:
http://ark.intel.com/products/71096...ition-8M-Cache-up-to-3_90-GHz?wapkw=i7-3940xm
http://ark.intel.com/products/27492...066-MHz-FSB#infosectiongraphicsspecifications
http://en.wikipedia.org/wiki/Front-side_bus
This is a massive problem! The CPU is fundamentally limited in performance by its memory bandwidth. Thus - the new Intel Core i7 Extreme Edition is only 3 times faster then the Pentium 4 HT Extreme Edition - despite it coming out 9 years later.
How to fix it - the onboard GPU. By giving the CPU access to the GPU's resources, it can easily have access to 100+ GB/s of memory bandwidth. A brilliant move.
http://ark.intel.com/products/71096...ition-8M-Cache-up-to-3_90-GHz?wapkw=i7-3940xm
http://ark.intel.com/products/27492...066-MHz-FSB#infosectiongraphicsspecifications
http://en.wikipedia.org/wiki/Front-side_bus
This is a massive problem! The CPU is fundamentally limited in performance by its memory bandwidth. Thus - the new Intel Core i7 Extreme Edition is only 3 times faster then the Pentium 4 HT Extreme Edition - despite it coming out 9 years later.
How to fix it - the onboard GPU. By giving the CPU access to the GPU's resources, it can easily have access to 100+ GB/s of memory bandwidth. A brilliant move.