MemTest86+
The reliable, open-source memory testing tool for x86 computer systems.
Best for
PC builders and technicians diagnosing RAM hardware faults.
Skip if
You need an OS-based tool with a graphical interface.
What is MemTest86+?
MemTest86+ is a standalone memory testing software designed to thoroughly diagnose and stress-test computer RAM for hardware faults and stability issues. Operating independently of any operating system, it boots directly from removable media to execute rigorous algorithmic patterns against physical memory addresses. Widely trusted by PC builders, system administrators, and hardware technicians, it helps isolate faulty RAM sticks, unstable overclocks, and subtle memory degradation before they cause data corruption or system crashes.
SpecificationsAI-estimated
Key Features of MemTest86+
Use Cases for MemTest86+
PC System Assembly
Verify the stability of newly installed RAM modules before deploying a custom-built computer.
Hardware Troubleshooting
Diagnose mysterious blue screens, random reboots, and application crashes caused by failing memory.
Overclocking Stability
Test custom RAM frequency, voltage, and timing adjustments to ensure long-term system reliability.
Enterprise Maintenance
Perform routine hardware diagnostics on server and workstation fleets to prevent unexpected downtime.
Pros & Cons of MemTest86+
Pros
- Completely free and open source
- Runs independently of the operating system
- Supports both UEFI and legacy BIOS
- Deep diagnostic algorithms detect subtle hardware faults
Cons
- Requires creating a bootable USB drive to run
- Lacks a graphical desktop interface during testing
- Cannot test RAM while the primary operating system is running
Frequently Asked Questions
How do I install MemTest86+?
You can download the installer from the official website and write the bootable image directly to a USB flash drive.
Do I need an operating system to run MemTest86+?
No, MemTest86+ is a standalone program that runs on bare metal by booting directly from your system's BIOS or UEFI.
How long does a memory test take?
A complete test cycle depends on the total capacity and speed of your RAM, typically taking anywhere from 30 minutes to several hours.
Is MemTest86+ free for commercial use?
Yes, the software is free and open source under the terms of the GNU General Public License.
Pricing Overview
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