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MemTest64

MemTest64 is a free Windows utility for checking system memory for hardware-level problems.

Place
#19 of 26
Score
5.8
MemTest64's website

What MemTest64 is

MemTest64 is a free Windows utility for checking system memory for hardware-level problems. It loads physical memory with test patterns and uses detection algorithms to find errors automatically. Users can control how much memory to test to reduce the effect on other work. The standalone graphical tool runs inside Windows and does not require a reboot, DOS mode, administrator privileges, installation, or registry changes. It supports modern processors including Intel Core and AMD Ryzen. Listed operating systems are 64-bit editions of Windows XP, Vista, 7, 8, 10, and 11. The maker says it can also help overclockers adjust memory timings and DRAM speeds to maximize memory performance. The utilities listing identifies version 1.0, dated April 20, 2017, and the product page links to a support forum. Its listed plan costs nothing. The main limitation is platform compatibility: MemTest64 is for 64-bit Windows only.

Good

  • Detects memory errors automatically
  • Lets users control how much memory is tested
  • Runs in Windows without rebooting
  • Requires no installation or administrator privileges
  • Supports listed 64-bit Windows versions

Watch out

  • Limited to 64-bit Windows
  • Listed as version 1.0 dated April 20, 2017

Who it suits

It suits Windows users who want to check system memory for hardware-level problems without rebooting. The maker also identifies overclockers adjusting memory timings and DRAM speeds as potential users.

Verdict

MemTest64 is a lightweight option for memory checks from within Windows, with controls for limiting the amount tested. Its age and 64-bit Windows-only support are worth noting.

Plans and prices

From MemTest64's own pricing page, checked 7 Oct 2026.

All about pricing
PlanPriceWhat it gives you
MemTest64FreeFree utility · 64-bit Windows only

The facts

Each one read from MemTest64's own pages, with the date it was checked.

What it does

Download version
TechPowerUp's utilities listing identifies MemTest64 version 1.0, dated April 20, 2017.checked 7 Oct 2026
Error detection
Errors are detected automatically.checked 7 Oct 2026
Installation
It requires no installation and makes no registry modifications.checked 7 Oct 2026
Intended users
The maker says it can help overclockers maximize memory performance by adjusting timings and DRAM speeds.checked 7 Oct 2026
Interface
It is a lightweight, standalone utility with a graphical interface that runs from within Windows.checked 7 Oct 2026
Memory allocation
The user can control how much memory to test to reduce operational impact.checked 7 Oct 2026
Memory testing
It loads physical memory with test patterns and uses various detection algorithms to test memory.checked 7 Oct 2026
No reboot
It runs without requiring a reboot or DOS mode.checked 7 Oct 2026
Permissions
It does not require administrator privileges.checked 7 Oct 2026
Processors
The software supports modern processors, including Intel Core and AMD Ryzen.checked 7 Oct 2026
Purpose
MemTest64 checks system memory for hardware-level problems.checked 7 Oct 2026
Support
The product page links to a MemTest64 support forum.checked 7 Oct 2026
Supported systems
The listed supported systems are Windows XP, Vista, 7, 8, 10, and 11, all 64-bit only.checked 7 Oct 2026

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