View the number of operating system digits

Sometimes some of the software we download will be accompanied by the number of digits (x64...) information for us to choose as needed, then we need to know the number of processor and operating system in the end.

View processor count: Right-click my computer to Display CPU information, or you can view it in a CPU-Z (not tried ).

View the number of bits in the operating system (WINXP has not been tested): 1. Start --> run:Winmsd.exe. 2. Find "processor" in the right pane under "project ".

If the value of the "processor" starts with "x86", the computer is running a 32-bit version of the Windows operating system.
If the value of the "processor" starts with "IA64", the computer is running a 64-bit version of the Windows operating system.

64-bit technology is relative to 32-bit. This number of digits indicates that the data width of general-purpose registers (general-purpose register) is 64-bit,A 64-bit instruction set is a command that runs 64-bit data,That is to say, the processor can run 64 bit data at a time.To implement 64-bit computing in the real sense, a 64-bit processor alone cannot,There must also be a 64-bit operating system and 64-bit application software,The three are indispensable, and none of them can achieve 64-bit computing.

X86 is short for Intel processor-based systems. X has nothing to do with the processor. It is a simple wildcard definition for all * 86 systems. It is an Intel general computer series number and also identifies a set of general computer commands, since Intel's CPU numbers were all numbers such as 8086, 80286 in the early days, since the entire series of CPUs were compatible with commands, x86 was used to identify the current Pentium, P2, the P4 and sai Yang series support x86 command systems, so they all belong to the x86 family,Currently, the 64-bit CPU technology mainly includes amd amd64-bit technology, Intel em64t technology, and Intel IA-64 technology. Among them, IA-64 is independently developed by Intel, not compatible with the current traditional 32-bit computer, only for itanium (anteng) and subsequent products itanium 2.

 Amd64-Bit Technology

Amd64 bit technology is added to the original 32-bit x86 Instruction Set Based on the X86-64 extended 64-bit x86 instruction set, so that the chip is compatible with the original 32-bit x86 software in hardware, it also supports 64-bit X86-64 extension, making this chip a real 64-bit x86 chip. This is a true 64-bit standard with a X86-64 capable of 64-bit addressing.

Em64t Technology

Intel officially defines em64t as follows: em64t stands for extended memory 64 technology, that is, extended 64 bit memory technology. Em64t is an extension of the Intel IA-32 architecture, namely, IA-32e (Intel Architectur-32 extension ). With the em64t technology attached, the IA-32 processor allows software to take advantage of more memory address space while being compatible with IA-32 software, and allows the software to write 32 bit linear addresses. Em64t especially emphasizes the compatibility between 32 bit and 64 bit. Intel added 8 64-bit GPRS (R8-R15) for the new core, and expanded all the original GRPS to 64-bit, as described above, which can improve the integer computing capability. 8 128bit SSE registers (XMM8-XMM15) were added to enhance multimedia performance, including support for SSE, sse2, and sse3.