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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Two big reasons:
The first is speed. RAM is much faster than an SSD, something like 20-80 times faster. Since storing and retrieving data is so integral to the function of a computer trying to use an SSD exclusively would make your computer agonizingly slow even if you can make it work. Any savings on RAM would be outweighed by crippling the computer as a whole.
Second, SSDs wear out. Their method of storing data without constant power input will gradually degrade the storage and it will go bad. Drives automatically spread out which cells are used so they wear evenly and gracefully, but the number of cycles is limited. RAM is designed to constantly change its contents so while it can’t store data without power it will wear down much less per cycle. You would be prematurely wearing out your SSD and that would outweigh just using RAM in the first place.
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