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NVRAM related queries

+1 vote

I have below queries about NVRAM, Can someone please help in understanding this?

  1. Is NVRAM part of RAM or a separate hardware?
  2. Set value in NVRAM key can be changed by outside source?
  3. Considering NVRAM as part of RAM then buying new RAM is lot more cheaper than purchasing license for the product, If customer wants then they can change RAM and use product infinitely, Still most of the company/products depended on NVRAM, Why?
posted Dec 4 by anonymous

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+2 votes

I am confused with all 32/64 bit architecture for Hardware/OS/Binary, Can someone please help in clarifying this queries?

  1. Of'course 64 bit hardware is faster than 32 bit, still there are people who prefer 32 bit over 64 bit hardware, Why so?
  2. If I have 32 bit Hardware then On that can I run 64 bit OS? (and vice versa)
  3. If I have a 64 bit Hardware and 32 bit OS then what will be the speed of my OS, as per 32 bit or as per 64 bit? (and vice versa)
  4. If I have 32 bit OS then can I run binary of 64 bit on that? (and vice versa)
  5. Is it necessary to compile binary with 32/64 bit both or we can compile with any and use it in both?
  6. Is the speed of the process also depends on type of binary that I have? For example, If I have 64 bit hardware and 64 bit OS but I have a binary which is compiled with 32 bit compiler then what will be the speed difference?

P.S. I know its basic and silly queries but lets clear now before it gets too late. :)

0 votes

As far as I know , to check for the amount of installed RAM on my centos server I checked it as:

#more /proc/meminfo

Can you please let me know how can I check for the instantaneous occupied amount of my RAM the similar way the task manager shows it on my Win server?

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