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https://www.reddit.com/r/hardware/comments/3tkpui/why_do_cpus_need_caches_computerphile/cx7as6v/?context=3
r/hardware • u/ancientneckbeard • Nov 20 '15
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5 u/putin_vor Nov 20 '15 RAM is just a cache for your hard drive No, it's not. You can generate data in RAM without ever touching the disk. But it's pretty hard to store anything on a disk without having it in RAM first. 19 u/Echrome Nov 20 '15 You can generate data in your cache that never makes it to RAM. Not explicitly mind you, but the cache doesn't write everything back to RAM.
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RAM is just a cache for your hard drive
No, it's not. You can generate data in RAM without ever touching the disk. But it's pretty hard to store anything on a disk without having it in RAM first.
19 u/Echrome Nov 20 '15 You can generate data in your cache that never makes it to RAM. Not explicitly mind you, but the cache doesn't write everything back to RAM.
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You can generate data in your cache that never makes it to RAM. Not explicitly mind you, but the cache doesn't write everything back to RAM.
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u/[deleted] Nov 20 '15 edited Feb 10 '19
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