There are free, professional and self booting editions of MemTest86 available. The pricing and feature differences can be found below.
Platform / Architecture Support
| Feature | MemTest86 v10.4 Free Edition | MemTest86 v10.4 Pro Edition | MemTest86 v10.4 Site Edition |
| Older BIOS support (pre UEFI)(1) |  |
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| Bootable from floppy disc(1) | |
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| Bootable from CD(1) |  |
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| Bootable from USB | |
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| Bootable from Network (PXE) | |
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| UEFI BIOS Support | |
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| Native 64-bit code | |
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| ARM64 Support | |
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| Secure Boot trusted binaries(2) | |
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| Native USB keyboard support (3) | |
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| Graphical interface w/ mouse support | |
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| Piezo speaker audio support | |
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| RAM SMBIOS reporting | |
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| Basic RAM SPD reporting | |
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| DDR5/DDR4/EPP/XMP SPD reporting | |
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| ECC capability reporting | |
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| DDR5/DDR4 DIMM Decoding(4) | |
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| DDR5/DDR4 Chip Decoding(4) | |
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Test Algorithms / Fault Detection
| Feature | MemTest86 v10.4 Free Edition | MemTest86 v10.4 Pro Edition | MemTest86 v10.4 Site Edition |
| New 64-bit/SIMD tests (5) | |
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| New Row Hammer test | |
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| Multi-core testing (6) | |
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| ECC error reporting (7) | |
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| ECC error injection (8) | |
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| CPU/RAM temperature monitoring (9) | |
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| RAM benchmarking | |
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| SPD data validation | |
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| Comprehensive logging to disk | |
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| Save HTML reports to disk | |
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| Customizable HTML Reports | |
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| Save results to disk in binary format | |
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| Enable/disable memory caching | |
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| Save settings (via config file) (10) | |
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| Full test automation (via config file) | |
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| Custom Tests (via config file) | |
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Integration (Platform / Third-Party)
| Feature | MemTest86 v10.4 Free Edition | MemTest86 v10.4 Pro Edition | MemTest86 v10.4 Site Edition |
| Management Console integration & reporting | |
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| Command-line scripting | |
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Linux BADRAM memory blacklisting
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Windows badmemorylist memory blacklisting
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| Network (PXE) Real-time clock (RTC) synchronization | |
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| Logic Analyzer error triggering (11) | |
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| Intelligent Memory Surveillance (iMS) failure prevention (12) | |
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Support / Pricing
| Feature | MemTest86 v10.4 Free Edition | MemTest86 v10.4 Pro Edition | MemTest86 v10.4 Site Edition |
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Multi-language support (French / German / Czech / Polish / Russian / Spanish / Portuguese / Italian / Catalan / Japanese / Chinese) |
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| Support & Maintenance | Free Public Forum | Phone, E-mail, Forum Support, plus free upgrades for 12 months after purchase. | Phone, E-mail, Forum Support, plus free upgrades for 12 months after purchase. |
| Download Price | Free |
US$44.10 (10% off) $49.00 (13) |
US$4800.00 (14) |
| USB Price | N/A | US$59.00 + shipping (13) | N/A |
1. If you are looking for old BIOS, floppy disk or CD support, we recommend using MemTest86 V4 which is still available for download under 'Older Versions'. While booting from a CD is still technically possible, the CD/DVD ISO Image remains available for download. However, is not recommended or supported as USB boot is preferable.^
2. Secure Boot is a feature in UEFI that only allows drivers and applications that are signed with an acceptable signature to run on the system. Most systems implement Microsoft Secure Boot, which only allows applications/drivers signed with a Microsoft signature to load properly.^
3. The keyboard now works on systems that fail to emulate IO Port 64/60 correctly. So Mac USB keyboards are now supported.^
4. DIMM and Chip decoding allows the a memory address with an error to be decoded to a physical hardware location (memory slot and silicon chip). Currently only available for selected hardware configurations. More details
5. Test #11 and Test #12 in the software. These are tests using the CPU's SSE/Neon instructions to read and write 64bit and 128bits of data at a time from the RAM.^
6. MemTest86 support up to 16 cores in the Free version and 512 for the Pro version. Note: The Free version will still work on higher core count CPUs, but will only use the first 16 cores.^
7. ECC is not supported for ARM systems due to chipset limitations^
8. ECC error injection is a feature that simulates ECC errors in order to test the system's error handling mechanism. The following chipsets may support this feature but may be disabled (depending on your BIOS configurations):^
- AMD Bulldozer (15h)
- AMD Steamroller (15h)
- AMD Jaguar (16h)
- AMD Ryzen (17h-19h) [Note: Injection is disabled in most AMD retail CPUs. To enable, please consult the Processor Programming Reference document]
- AMD Steppe Eagle SoC
- AMD Merlin Falcon SoC
- Intel Nehalem
- Intel Lynnfield
- Intel Westmere
- Intel Xeon E3 family (Sandy Bridge)
- Intel Xeon E3 v2 family (Ivy Bridge)
- Intel Xeon E3 v3 family (Haswell)
- Intel Xeon E3 v4 family (Broadwell)
- Intel Xeon E3 v5 family (Skylake)
- Intel Xeon E3 v6 family (Kaby Lake)
- Intel 8th/9th Gen Core/Xeon E-2100 family (Coffee Lake)
- Intel 10th Gen Core/Xeon W-1200 family (Comet Lake)
- Intel 11th Gen Core/Xeon W-1300/Xeon E-2300 family (Rocket Lake)
- Intel 11th Gen Core mobile family (Tiger Lake-H)
- Intel 3rd Gen Xeon Scalable family (Alder Lake)
- Intel Atom C2000 SoC (Silvermont)
- Intel Broadwell-H SoC
- Intel Atom E3900/Celeron N3350/Pentium N4200 SoC (Apollo Lake)
9. Where supported by the hardware:^
10. Configuration file allows memory test settings to be pre-defined without the need for keyboard input. This can help with automation.^
11. Support for memory error triggering and logging for logic analyzers such as Logic Analyzer Keysight U4164A. Memory errors trigger a write to a pre-defined memory address, allowing a more comprehensive hardware-based tracing and memory analysis.^
12. Support for KingTiger's iMS functionality, which will allow bad RAM addresses to be localized and removed from service, possibly fixing memory errors caused by defective RAM sticks.^
13. You need to purchase 1 license per machine that is running the software. Please see the licensing page to determine how many licenses are required.^
14. Site Edition covers an unlimited number of users within a single organization in a single country.^
