Which Memory Type Should You Use?


I continue to get besieged by statements in which memory “latency” and “bandwidth” get misused. As I mentioned in my last blog, latency is defined as how long the CPU needs to wait before the first data is available, while bandwidth is how fast additional data can be “streamed” after the first data point has arrived. Bandwidth becomes a bigger factor in performance when data is stor... » read more

The Memory And Storage Hierarchy


The memory and storage hierarchy is a useful way of thinking about computer systems, and the dizzying array of memory options available to the system designer. Many different parameters characterize the memory solution. Among them are latency (how long the CPU needs to wait before the first data is available) and bandwidth (how fast additional data can be “streamed” after the first data poi... » read more

Digital TV: The Need For Speed


With CES just finishing up, I wanted to take a closer look at the changes in the digital TV market, and what affect those changes have on high performance memory and serial links. Just five years ago, the United States made the transition from analog to digital television. At the time, standard definition digital TV was common, with screens that contained 345 thousand pixels per frame. Recen... » read more

Five Emerging DRAM Interfaces You Should Know For Your Next Design


Producing DRAM chips in commodity volumes and prices to meet the demands of the mobile market is no easy feat, and demands for increased bandwidth, low power consumption, and small footprint don’t help. This paper reviews and compares five next-generation DRAM technologies— LPDDR3, LPDDR4, Wide I/O 2, HBM, and HMC—that address these challenges. To view this white paper, click here. » read more

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