32 Bit vs 64 Bit Explained - GoTechTalk

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Sunday, July 15, 2018

32 Bit vs 64 Bit Explained


A quick search on our hype evaluation machine also known as the Google reveals just shy of 9 million hits about sixty-four-bit vs. 32-bit processors.

I know some of this hype was started by the PC crowd back when AMD launched their first desktop PC 64-bit CPU back in 2003, but since the launch of the iPhone 5s the first smartphone with a 64-bit CPU it's become a hot topic again but what does it actually means??

Let's start with what a bit is very briefly here one bit is a single character in binary either 1 or 0 so it can only express up to two values with two bits we can express up to four values and with three bits that goes up to eight every bit we add increases the number of different values we can represent in binary exponentially, now you'll hear about bits in relation to all kinds of computer things from data storage to data transmission to data processing, so that brings us back to CPUs in the context of a processor the number of bits generally refers to the amount of memory it can address so while a 32-bit processor is without PAE magic tricks limited to about four gigs of memory or ram a 64-bit processor can handle up to 16 billion gigabytes of RAM, alright that sounds interesting more RAM is good for performance but more RAM is only beneficial if you need it to store data that are applicable to the task your processor is working on at a given time adding more RAM.

So move to more bits 4 processors it's not something to be undertaken for no reason aside from the hardware re-engineering and instruction set architecture extension or redesign it involves a complete rewrite of fundamental parts of the operating system be it windows OS 10 Linux Android iOS or whatever it requires specific  driver software for all hardware components that will be used and finally application developers we'll need to at least recompile and debug their code just to achieve basic compatibility without taking advantage of any performance improvements.

May be the entire hardware and software industries will cooperate for a fast migration for the first time ever so we can have huge performance gains right anyone?? I wouldn't hold your breath here we are over ten years after the release of the Athlon 64 and in addition to most of the applications on my 64-bit pc anyway running in 32-bit mode Microsoft is still supporting entirely 32-bit versions of even their windows 8.1 OS and furthermore if you think a 64-bit processor is faster then I'm afraid you bought into the hype my friends for certain workloads and nothing you're doing on your phone at the moment there will be a benefit but in most cases what you're actually benefiting from is that a 64-bit CPU will tend to have a newer more robust design overall with more registers functional units memory bandwidth and all that other stuff so until we need more than 4 gigs of RAM for our phone applications.

The 64-bitness is just a necessary transition being packaged up for the general consumer as a selling point speaking of selling points.



Alright, guys, that's the end of the blog, thanks for reading the whole way through if you enjoyed this blog please share it with someone who would be interested and leave a comment, Thanks for reading guys.

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