It’s a common knowledge that computers run on rams, any application run on a pc is temporarily stored in the ram. So why can’t we just dedicate 32Gbs of ssd storage to ram and have our pcs run on it? That way one could have a 256Gbs of ram easily, without the need of the ram sticks and for so much cheaper.
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RAM is significantly faster to access.
NVME drives have a max transfer speed in the realm of like 7-8 Gb/s
DDR5 RAM is 50+ GB/S per module (consumer is typically two channels)
While new modern NVME drives are faster than really old RAM, equivalent technology levels will always have storage slower then memory, and memory slower than cache.
To use a nice real world example, Storage is all the paperwork you have in your filing cabinet, RAM is all the paperwork that can fit on your desk. It’s way faster to access the stuff on your desk, but it also can’t fit nearly as much as a filing cabinet.
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