An interesting piece of info if you plan to buy a new SSD...
Why Are Smaller SSDs Slower?
Larger SSDs are faster because they use more Channels in parallel while smaller ones only use a few channels (4 instead of 8). The higher capacity variants of an SSD model often get their higher capacity from simply having more NAND flash chips of the same type as the lower capacity variants. Having more NAND flash chips allows for a design where the controller on the SSD can access more data in parallel, allowing for higher speeds.
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