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A HDD has 1 controller chip and that controller is relatively simple compared to the controller chip on an SSD, its certainly a lot smaller and on a less advanc
by PaulKeeble 1y ago
A HDD has 1 controller chip and that controller is relatively simple compared to the controller chip on an SSD, its certainly a lot smaller and on a less advanced process because it has to deal with ~200MB/s not 15000MB/s. On top of the controller chip a 2280 NVMe SSD will have 4 or 8 memory chips as well, which are on a recent process and have many many layers stacked together. Then the SSD will also often have a DRAM chip as well. An SSD uses substantially more silicon than a HDD does.
- reginald78 1y agoNot disputing your broader point necessarily, but don't hard drives also include memory for cache while dram cache has become less and less common on SSDs? (to point where it is now uncommon on new SSD devices)
- PaulKeeble 1y agoYes they do. A consumer HDD from Seagate seems to have about 512MB whereas an SSD from Samsung seems to use 2GB.