What is difference between 5400 rpm and 7200 rpm?

Related questions

1. Do HDD or SSD last longer?
2. Does Intel Optane replace RAM?
3. Is RAM faster than NVMe?
4. What makes a HDD fast?
5. Can Optane replace RAM?
6. Is SSD faster than HDD?
7. How is HDD speed measured?
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10. How fast can HDD write?

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