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64-bit: More than just the RAM

I don't understand whether I have 64 or 32 bit. Probably 64 but I don't know. What's the difference between them?
 

My Computer

System One

  • Manufacturer/Model
    Dell Inspiron 530
    Monitor(s) Displays
    Acer
    Screen Resolution
    1920x1080
    Mouse
    Dell USB Mouse, Logitech Wireless Mouse or Windows Optical
    Keyboard
    Dell/Logitech
    Other Info
    Thank you for everything you've done for me in the past years. I'm sorry that games require much more than you're capable of, but you'll never be forgotten as my first personal computer <3

MilesAhead

Eclectician
Vista Guru
Gold Member
Posts
2,442
Also you can just do this at a command prompt:

dir %windir%\SysWow64

If the SysWow64 folder is there, you're on 64 bit Windows.
 

My Computer

System One

  • Manufacturer/Model
    HP Pavilion m9515y
    CPU
    Phenom X4 9850
    Memory
    8 GB
    Graphics Card(s)
    Some Radeon Cheapie with 512 MB Ram
    Monitor(s) Displays
    CRT
    Screen Resolution
    1280x1024
    Hard Drives
    750 GB SATA 3G
    2 SIIG Superspeed docks w/WD Caviar Black Sata II or III
Posts
7
Vista Ultimate 64 bit seems very stable and no finding driver problems here either. Waiting to up my computer to 8 gig's shortly. Then I hope it will really fly.
It really is a great operating system. The more ram installed for a 64 bit system, the faster it appears. My computer has mounted 12 gigabyte's though I'll probably optimize to 24 in the future.
 

My Computer

System One

  • Manufacturer/Model
    Custom Build