Computer 64-bit and 32-bit systems What is the difference
with a computer so long friends, know what is 64-bit and 32-bit operating system? Do you know the difference between 64-bit and 32-bit? If you don't know, let's take a look at the introduction of computer experts and let your knowledge increase.
simply represents the x86 32-bit operating system on behalf of 64-bit x64 operating system. If your CPU is dual-core or above, it definitely supports 64-bit operating systems. If your computer's memory is larger than 4G, then you should use a 64-bit system, because 32-bit Windows7 is good, Vista is also good, and the maximum is only 3.25G memory. The 64-bit Windows 7 will support up to 128G of memory.
64bit calculation has two main advantages: a wider range can be the integer arithmetic; can support more memory.
not because of changes in the numbers, but simply that the performance 64bit processor is twice 32bit processor performance. In fact, in 32-bit applications, the performance of 32-bit processors will be even stronger. Even 64-bit processors are currently more powerful in 32-bit applications. So be aware of the advantages of 64bit processors, but not superb 64bit.
system memory 64 which is the most significant advantage that it can use more than 4GB of RAM. Most new desktops and laptops have at least 4GB of memory. The problem is that 32-bit versions like Vista and Win7 can only use about 3GB of memory. In contrast, 64-bit Windows can not only use up to 192GB of memory, but also use the memory map to replace the BiOS feature, so that the operating system really uses the full 4GB. Therefore, if you install Win7x64, you will not waste 1GB of memory on machines with 4GB of RAM.
think, 3GB is not enough for everyday applications is only a matter of time. An example is the Win7 XP mode feature, which allows you to run an old application on a virtual machine in Windows XP. This feature can be used for a variety of purposes, such as running Office2007 and Office 2003 on the same computer at the same time, or IE (useful for web development). But WinXP mode requires at least 512MB ~ 1GB of memory to run properly, so XP mode is very memory. So if you deploy Windows 732 now, you might want to move to 64 bit soon, just because you have to upgrade your machine with new memory. My own laptop has 8GB of memory, because the programs I develop can run in every virtual machine environment. I don't want to waste every byte in memory.
64-bit True provide better performance yet?
I guess a lot of people think 64-bit processor is faster than 32-bit processors. Because of the fact that the transition from 8-bit to 16-bit, the transition from 16-bit to 32-bit does bring some performance gains. For the above reasons, can you think that a 64-bit processor can be faster?
there is such an example, many 32-bit processor instruction set supports S ***, but most programmers will not use them, because that would interfere with the computer does not support these instruction sets to run their compilation The program (egSSE2 can make Zip compression faster, but the most commonly used 3 compression software does not use it).
Therefore, only the 64-bit applications optimized for 64-bit programs will have a performance boost. Unfortunately most Windows applications don't do this optimization.
But the past year, freshmen a lot of 64-bit applications, but do not mistakenly believe that they are faster than the 32-bit version. Because usually, this 64-bit version is produced only because the 32-bit version does not work properly on 64-bit Windows operating systems. But some 64-bit performance-dependent programs, such as mathematics (egMathlab) and various video processing software, or software developers explicitly support 64-bit (eg7zip), then the speed may be significantly different than the 32-bit version .
On the other hand, win64 will not slow down your computer's performance. Although programs like the CLR (.Net underlying) perform some calculations to enable 32-bit programs to run on 64-bit systems, it takes a lot of time logically. However, in practice you will not know the difference. Almost all performance tests can prove that in most cases you don't care about the performance difference between 64-bit and 32-bit.
the above explanation, we know the computer's 64-bit and 32-bit mean, but also to understand the differences between them, so when buying a computer, you can follow their own needs to choose 64 Still 32-bit, it’s best to know that it’s right for you.