-1
votes
3answers
108 views

Defining 32-bit or 64-bit processor requirements [duplicate]

My knowledge of computer hardware is fairly extensive, however it is apparent that this is not the case when considering types of operating systems. I've gone by the rule of thumb for years that if a ...
14
votes
2answers
263 views

Are 64-bit processors “faster” than 32-bit ones, simply because they are 64-bits? [duplicate]

I have pondered that some say "32-bit is old news" because you are limited in RAM without cutting around, such as with PAE. Assuming first that the following factors weigh in on the processor's speed ...
0
votes
1answer
99 views

Requirements to change a 32-bit CPU with a 64-bit CPU [closed]

I want change my 32-bit Athlon with a 64-bit Phenom. Do I need to change my OS (32-bit Windows 7) as well?
1
vote
1answer
517 views

Understanding the nop byte(s)

Ok, so I was reading through the AMD64 manuels and knowing that nop is really an xchg eax, eax, I looked at the xchg and found something interesting, that it seems a byte can be encoded into the ...
2
votes
1answer
316 views

“nop; jmp short” vs. “jmp short; nop”

Ok, first let me get this straight: This is not about micro optimization. But, I know in bootloaders on the partition, a lot use the jmp short; nop coding. But it is to my understanding that the less ...
5
votes
2answers
5k views

What`s the difference between Intel 64 and AMD64?

Can someone explain if there is any difference between the intel64 and amd64 architectures?
2
votes
0answers
222 views

How to tell if an EXE is 32-bit or 64-bit? [duplicate]

Possible Duplicate: Quick way to tell if an installed application is 64-bit or 32-bit What's the easiest way to know if a Windows EXE is 32-bit or 64-bit?
141
votes
19answers
24k views

32-bit vs. 64-bit systems

What are the differences between 32-bit and 64-bit systems? If you have used both of them, what kind of sharp differences have you experienced? Would it be a problem to use 32-bit programs on ...