Why can’t we just use SSDs with 128GB as RAM on our Computers? It seems way better than 8 or 16 GB.
In: Technology
Compared to RAM, SSDs are much slower, have much greater latency, and have extremely limited endurance.
A block on a consumer SSD can be erased just a few thousand times (exact number depends on the SSD). RAM contents change constantly, easily millions of times a second. While SSDs can take their normal load that’s just because writes to disk are very rare comparatively speaking. The amount of stuff going on in the RAM is just brutal by comparison, and so at most a SSD can be used as swap space — to offload stuff that doesn’t need to be in RAM right now, but that might be needed later. Even then, one needs to be somewhat careful with that.
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