What is the exact ratio of speed between hard disk and RAM?

What is the exact ratio of speed between hard disk and RAM?

I’m not sure what’s the relevance of this since both devices’ speed is calculated differently. Like for instance, the RAM or particularly the SDRAM, the speed of this type of device is measured in terms of megahertz or MHz. Often, the last digit of a memory part number will represent the speed such as -6 = 60ns [nanoseconds].

In a hard drive, the speed or the device seek time is measured by Revolutions Per Minute or RPM. Modern hard drives today that can usually be bought on computer stores have 7200 RPM. Older hard drives have lesser RPM which means a much slower performance. The hard drive’s performance is hardly noticeable when transferring or copying smaller files. You can only distinguish how fast it is when you are copying big file sizes like in GBs.

What is the exact ratio of speed between hard disk and RAM?

Dear GAShahid,

As far I now there is no exact ratio between RAM and hard disk of computer. RAM is essential to run the computer smoothly if RAM size is high then the performance of a computer will be high and hard disk is used for storage data. For normal work I think 2 GB RAM and 320 GB hard disk enough. One things if you use 4GB or more ram you must use 64 bit operating system otherwise the ram remain unusable.

Thanks and Regards

Louis