The storage is literally an extension of the memory, and fast storage reduces paging overhead. That's important because the faster the storage is, the more fluid moving pages from DRAM to a drive becomes. But two other major changes have made macOS much less dependent on DRAM capacity.įirst, Apple has pushed SSD performance to the max, writing at over 2GB/s and reading at over 3GB/s. When DRAM was $5/MB, most people bumped into the affordability limit pretty quickly.īut DRAM got cheaper - now you can buy DIMMs for $5/GB - and economic considerations faded. When RAM fills up, the operating system starts paging least recently used blocks of data out of RAM into storage to free up capacity.įor years virtually all systems did not have enough memory to fully utilize system CPU and bandwidth, so the common wisdom was to add as much DRAM as you could afford. RAM is power hungry, hot, and - less relevant at MBP prices - expensive. Random access memory (RAM) is a computer's scratch pad where work in process is stored. I'm buying a new MacBook Pro, but the Surface Studio took my breath away Ukrainian developers share stories from the war zone Linux distros for beginners: You can do this! Got questions about crypto? Ask the Coachįor Mom: The best flower delivery services How ransomware attacks threaten our food supply
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