#computer-architecture

How-to: On x86 architecture, why are there fewer bits for virtual address space than physical? #answer #programming #fix

On x86 architecture, why are there fewer bits for virtual address space than physical?

I was reading this article on 64 bit computing, and it mentions:

For example, the AMD64 architecture as of 2011 allowed 52 bits for physical memory and 48 bits for virtual memory

I would think that it would make more sense to allow for more virtual memory than physical memory, so why is it actually the other…

How to: Why are there so many pins on a sata power connector? #answer #it #computers

Why are there so many pins on a sata power connector?

I was just looking at the power connector for a SATA optical drive, and noticed that it had fifteen pins!

I then marveled at the data connector next to it, which has a measly seven pins.

I know that there are only physically three pins needed for the power connection:

+12v DC

+5v DC

Ground

Why did they decide to use a fifteen-pin power…

How-to: Why have CPU manufacturers stopped increasing the clock speeds of their processors? #it #fix #solution

Why have CPU manufacturers stopped increasing the clock speeds of their processors?

I have read that manufacturers stopped concentrating on higher clock speeds and are now working on other things to improve performance.

With

an old Desktop machine with Intel® Xeon® Processor E3110 with clock speed of 3.0GHz

and a new server with AMD Opteron(TM) Processor 6272 with clock speed of 2.1GHz

when…

Answer: How does a CPU 'know' what commands and instructions actually mean? #answer #dev #solution

How does a CPU ‘know’ what commands and instructions actually mean?

How does a processor ‘know’ what the different commands mean?

I’m thinking of assembly level commands like MOV, PUSH, CALL, etc…

Answer [by Breakthrough]: How does a CPU ‘know’ what commands and instructions actually mean?

When a computer interprets assemblylevel instructions, these instructions are turned into their binary…

Fix: Where exactly L1, L2 and L3 Caches located in computer? #programming #answer #computers

Where exactly L1, L2 and L3 Caches located in computer?

Where exactly L1, L2 and L3 Caches Located in computer ?

I know, we use Cache to increase performance by picking DATA and INSTRUCTIONS from Cache rather than Main Memory.

Following are my questions

Where exactly L1 Cache located ? . is on the CPU chip ?

Where exactly L2 Cache Located ?

Where exactly L3 Cache Located ? is on the Mother Board…

Fixed: Is a higher core count or higher clock speed more beneficial to a computer's performance? #computers #solution #dev

Is a higher core count or higher clock speed more beneficial to a computer’s performance?

With lowering silicon costs and rising consumer needs, manufacturers seem to be pushing one of two things: clock speed and/or core count. With the way things are going, it doesn’t seem that clock speed of processors is rising anymore, but the number of processor cores.

I remember only a few years back, I…