You’re ready to install new software, but the site gives you a choice:
“Download 32-bit” or “Download 64-bit” — which one should you choose?
More importantly, how do you tell what kind of file you already downloaded?
Let’s break it down.
✅ 1. Understand the difference
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32-bit apps are made for older systems (and CPUs)
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64-bit apps can access more memory, run faster, and are made for modern systems
Today, most PCs are 64-bit — but you still need the right file to match.
✅ 2. How to check your system (Windows)
Before checking the file, confirm your system type:
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Press
Windows + I→ System → About -
Under System type, look for:
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“64-bit operating system” or
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“32-bit operating system”
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Now, match your installer to that architecture.
✅ 3. How to identify file architecture (before install)
Option 1 – Look at the file name
Many developers include “x64” or “x86” in the file name:
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setup_app_x64.exe→ 64-bit -
appname_x86.msi→ 32-bit
Option 2 – Use 7-Zip (right-click method)
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Right-click the installer → Open with 7-Zip
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Inside, look for folder names like
/x64or/x86
✅ Not always reliable, but gives hints.
Option 3 – Use PE Explorer or EXE properties tools
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Tools like PEStudio, Exeinfo PE, or CFF Explorer
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Load the file → Look for architecture info (
PE32,PE32+= 64-bit)
✅ 4. After install: check the app in Task Manager
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Open the app
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Press
Ctrl + Shift + Esc→ Details tab -
On 64-bit systems, 32-bit apps will show
appname.exe *32 -
No mark = 64-bit
✅ Good for checking installed programs when you’re unsure.
✅ 5. Why it matters
Installing the wrong version can lead to:
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Slower performance (32-bit apps on 64-bit OS)
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Compatibility issues
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App refusing to run (64-bit on 32-bit system)
Always choose 64-bit if your system supports it — it’s faster and more future-proof.
Key points to remember
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Check your system type first before downloading
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Use file names, Task Manager, or tools to identify architecture
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Avoid guessing — install the version that matches your OS
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Prefer 64-bit when possible, unless app only supports 32-bit
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A wrong install might not crash — but it will limit performance