Whether microprocessor or ram has higher response time? | Sololearn: Learn to code for FREE!

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Whether microprocessor or ram has higher response time?

5/11/2017 7:58:24 PM

Naveed

5 Answers

New Answer

+5

I want to give an answer but I might be complicating this, so from this page: "Latency Numbers Every Programmer Should Know" https://gist.github.com/jboner/2841832 There's this chart, which includes the average time to execute 1 CPU instruction (not all instructions are equal) against cache, memory and other operations for an "average system" of the time: http://norvig.com/21-days.html#answers Notes: RAM clocks and CPU clocks are intimately related. On-die CPU cache is insanely fast. DMA disconnects the CPU from memory involvement (skips it; you handle the memory controller) Bus width (for double/triple/etc data rate) operation changes the rules a little. RAM is stamped with CAS latency numbers (how many "clock cycles" needed to do things). I still want to say "response to what" - but don't let that stop you; hopefully the linked data helps.

+4

Could you clarify this question, include what type of operation you're asking about? Otherwise, I could add all sorts of useless information trying to guess what you're comparing (DMA, cache, instructions, clocks, buses, etc)

+2

depends what microprocessor and what ram

+1

Thanks for your reply, really appreciate it.

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it is a question from past exam paper " Whether response time of a microprocessor is greater or less than that of RAM?" This is all