MemTest64
techpowerup.com
What it is
MemTest64 is a free, standalone Windows utility for checking system memory for hardware-level problems. It runs inside Windows with a graphical interface, loading physical memory with test patterns and applying detection algorithms that identify errors automatically. You choose how much memory to test, which can limit the effect on other work. The utility runs without a reboot or DOS mode, does not require administrator privileges, needs no installation, and makes no registry changes. Listed processor support includes modern Intel Core and AMD Ryzen systems. Supported systems are 64-bit Windows XP, Vista, 7, 8, 10, and 11. TechPowerUp describes it as useful to overclockers adjusting memory timings and DRAM speeds. The utilities listing identifies version 1.0, dated April 20, 2017, and the product page links to a support forum.
Spec sheet
- Purpose
- MemTest64 checks system memory for hardware-level problems.Read 7 Oct 2026 · techpowerup.com
- Intended users
- The maker says it can help overclockers maximize memory performance by adjusting timings and DRAM speeds.Read 7 Oct 2026 · techpowerup.com
- Support
- The product page links to a MemTest64 support forum.Read 7 Oct 2026 · techpowerup.com
- Download version
- TechPowerUp's utilities listing identifies MemTest64 version 1.0, dated April 20, 2017.Read 7 Oct 2026 · techpowerup.com
- Error detection
- Errors are detected automatically.Read 7 Oct 2026 · techpowerup.com
- Installation
- It requires no installation and makes no registry modifications.Read 7 Oct 2026 · techpowerup.com
- Interface
- It is a lightweight, standalone utility with a graphical interface that runs from within Windows.Read 7 Oct 2026 · techpowerup.com
- Memory allocation
- The user can control how much memory to test to reduce operational impact.Read 7 Oct 2026 · techpowerup.com
- Memory testing
- It loads physical memory with test patterns and uses various detection algorithms to test memory.Read 7 Oct 2026 · techpowerup.com
- No reboot
- It runs without requiring a reboot or DOS mode.Read 7 Oct 2026 · techpowerup.com
- Permissions
- It does not require administrator privileges.Read 7 Oct 2026 · techpowerup.com
- Processors
- The software supports modern processors, including Intel Core and AMD Ryzen.Read 7 Oct 2026 · techpowerup.com
- Supported systems
- The listed supported systems are Windows XP, Vista, 7, 8, 10, and 11, all 64-bit only.Read 7 Oct 2026 · techpowerup.com
Plans and prices
MemTest64 Free Free utility · 64-bit Windows only Read 7 Oct 2026 · techpowerup.com
Strong points and limits
Strong points
- Free utility with automatic error detection
- Runs without reboot or DOS mode
- No installation or registry changes
- Adjustable memory allocation
- Supports Intel Core and AMD Ryzen
Limits
- 64-bit Windows only
- Listed version dates to April 20, 2017
- No macOS or Linux platform listed
Who it suits
It suits Windows users who need an in-system memory check, including overclockers adjusting memory settings. It is limited to 64-bit Windows editions.
Verdict
MemTest64 offers a simple, non-installing way to test memory from Windows and lets users control the tested amount. Its practical scope is restricted to 64-bit Windows systems and an older listed release.
Where Specifiction places it
- Hardware Diagnostic Software#17 of 267.3
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