![]() ![]() although it is in decimal but I am telling this analogy for simplicity).but what you are saying is address space that is the maximum directly interfaceable size of memory (RAM). They just show how large the operand can be.(for analogy you can think of a 10-digit calculator can calculate results upto 10 cannot give us 11 digits or any other bigger results. So weather a processor 32 bit or 64 bit DOESN'T signify the maximum amount of memory can be installed. ![]() To say a processor 32 bit or 64 bit doesn't signify it should have 32 bit address bus or 64 bit address bus respectively!.I repeat it DOESN'T!!ģ2 bit processor means it has 32 bit ALU (Arithmetic and Logic Unit).that means it can operate on 32 bit binary operand (or simply saying a binary number having 32 digits) and similarly 64 bit processor can operate on 64 bit binary operand. But I am promising to you if you read this carefully, after reading this all your misconceptions will be cleart. I have never encountered a 64-bit program that will not install if you have less than 4 GB of RAM.Many people have this misconception. Running 64-bit Calibre (on a 64-bit OS) doesn't gain you any speed, but it does gain you the capability to convert larger books, and convert more books at the same time, if you have enough processor cores. ![]() 32-bit Calibre, on Windows 32-bit or Windows 64-bit won't be able to convert the book at all, because it'll hit the max of 2GB of memory per process. ![]() It'll be horribly slow, but it will work. 32-bit programs under Windows (32 or 64-bit, doesn't matter) cannot use more than 2GB within one process.Įven if you only have 2GB of RAM, you could run a 64-bit version of Windows, and 64-bit Calibre, and convert a book that requires 8GB of RAM. 32-bit Windows can't address more than 3.2 GB of RAM (except if you have a version that has PAE: Physical Address Extension, but this is VERY slow). Chickens and eggs, Catch22, two to tango and all thatĮven with less than 4GB, a 64-bit program can do things a 32-bit one can't at least, it can on Windows. True, you have to have the 'more addressable memory' - memory above 3.?GB is not accessible by 32bit programs, and 64bit programs wont install unless there's at least 4GB. ![]()
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