#computer-architecture

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

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…

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

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…

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

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…

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

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…

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

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…

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

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…

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Answer: How to find the architecture of OS installed? #fix #computers #dev

Answer: How to find the architecture of OS installed? #fix #computers #dev

How to find the architecture of OS installed?

I’m using Core 2 Duo. So, from Intel website I found that it is 64-bit architecture CPU.

Long back I’ve installed Ubuntu OS on this machine. But I’m not sure if I installed x86-32 or x86-64 version of Linux. I want to know which version of Linux I’m using. How to know that?

How to find the same on windows?

Answer [by rhohr]: How to find the…

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Fix: Can some software physically damage hardware? #programming #solution #answer

Fix: Can some software physically damage hardware? #programming #solution #answer

Can some software physically damage hardware?

I know a question similar to this one has been asked before however it was about installing a 32bit OS on a 64bit laptop. My question is more about damaging the hardware.

I was wondering if there was a way of interfacing with hardware from the OS or Terminal layer in a way to damage it beyond repair (actual physical damage, not just faulty hardware).

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