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Windows 7 x86 vs x64

Most people are confused with the x86 & x64 thingy. Basically, the x86 is the 32bit version and x64 is the 64bit version. (Need more info? Click here for x86. Click here for x64)

Many also doesn’t know what is the difference between those two version. Well, as per my experience, below is the difference that I can see.


1) Minimum requirement for Hardware

Before installing Windows 7, u must know which version that u want to run with either 32bit or 64bit. If u have an old CPU such as Pentium 3 or lower & 512MB of RAM or lower, then u should just stick with windows XP. Why? Becoz ur hardware will surely cannot support windows 7. But, if u have the latest CPU & more than 1gb of RAM, then it shouldn’t be an issue running 32bit or 64bit. Just need to decide between each version.


2) RAM / Memory utilization

The obvious difference is the maximum amount of RAM that will be utilized by windows. If u are running a 32bit windows, the maximum amount is 3gb. Microsoft has announce this in their support website. (Click here to read article). As for the 64bit, windows can fully utilized the amount of RAM and this is ideal for gamers, multi-tasker, graphic designer, etc.


3) Type of software used / can run on 64 bit

Many would think that having a 64bit Windows will make application run faster. That is half true. Worst of all, 32bit application will run much slower on 64bit Windows. Currently not all applications is written & optimized for 64bit processing speed. Today’s software is still designed for 32bit era. Maybe in another 1 or 2 years, software will be written & optimized for 64bit 🙂 (maybe)


4) Device drivers

64bit Windows are using different device drivers and surely will not work with 32bit device drivers. Unfortunately, most drivers nowadays is for the 32bit. Currently most hardware company are updating their drivers database. Hopefully drivers problem can be resolve within this year 😉


Hope this little info could help 🙂

difference between x86 and x64, windows 7 x86, windows 7 x64, RAM utilization for windows 7 x86 and x64


6 Responses

  1. Brilliant blog about Windows 7 x86 vs x64 ≡aDi iMee≡. I read it twice.

  2. well, i have troubles installing windows7 on my PC. maybe i need a bios update or something ~~-

    • Sometimes flashing new BIOS can resolve this issue. Usually for old Motherboard. For newer model, flashing new BIOS is not necessary.

      Just a quick question:
      do u encounter any error when installing win7? if have, what is the error code?
      Another thing is, have u perform a diagnostic for ur HDD? Maybe ur HDD having bad sector or worst.

  3. sometimes windows7 won’t install if you install it on a pc with a previous installation of windows XP “”

    • I never encounter that kind of issue.
      But what i notice is, sometime we as a user forgot to change SATA setting from IDE/Compactibaltity to ACHI. When that happens, u will get a BSOD error with error code 0x0000007b.

      One more thing that i notice, u need to delete partition that contains previous OS before u can install win7.

  4. Sounds good..
    but I am not sure as a developer or may be what other reason x64 attracts me.!
    Intel Core2 Duo
    2Gig Kingston

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