CPU <–> Memory bandwidth can limit performance
- Improving performance 1: hardware improvements to increase memory bandwidth (e.g., DDR -> DDR2 -> DDR3)
- Improving performance 2: move less data into/out of the CPU (e.g., Put some “memory” in the CPU chip itself–this is “cache” memory)
from:
The Hardware/Software Interface
July 2014
https://www.coursera.org/course/hwswinterface
related:
Intel® Core™ i5-2450M Processor (3M Cache)
http://ark.intel.com/products/53452/Intel-Core-i5-2450M-Processor-3M-Cache-up-to-3_10-GHz
Launch Date: Q1’12
Clock Speed 2.5 GHz
Instruction Set 64-bit
Max Memory Bandwidth 21.3 GB/s
