MemTest86 vs Universal x86 Tuning Utility

MemTest86 is a bootable utility that checks computer RAM for faults using memory test algorithms and patterns. It runs from a USB drive without an installed operating system, although Windows, Linux, or an Intel-based Mac can be used to create that drive. Version 11.7 requires UEFI firmware and x86 or ARM64 hardware, and does not support Apple Silicon M-series Macs. Its listed coverage includes 14 algorithms, such as SIMD, Row Hammer, and DMA tests, and support for DDR2, DDR3, LPDDR4, LPDDR5(x), ECC, CDIMM, and CAMM2 memory. It can create customizable HTML reports and, on supported configurations, decode an error address to identify a failed DIMM or chip. The Free Edition supports up to 16 CPU cores; Pro supports up to 512 and adds automation and custom tests. Site Edition adds PXE-based LAN deployment and Management Console integration. The Free Edition costs nothing; Pro Download costs $116, paid once.

Universal x86 Tuning Utility (UXTU) is a free Windows utility for adjusting processor and GPU settings on x86 laptops and computers. It works best with Zen-based CPUs or APUs and Intel CPUs from the fourth generation onward. Users can select premade presets, save custom ones, or choose Adaptive Mode, which monitors processor temperatures as it adjusts power limits. The app also has Game Library, System Info, and Automations sections. AutoOC monitors CPU and memory instability signals and changes Curve Optimiser offsets for Zen-based CPUs and APUs. Version 26.3.0 added an in-game overlay, preset backup and import, tray shortcuts, Windows power-plan options, Intel presets, and experimental Zen6 support; games with anti-cheat may not always work with the overlay. Windows installer and portable downloads are available. The latest stable release requires .NET 10 64-bit, PawnIO Driver, and Microsoft Visual C++ Redistributable. UXTU is free under GPL-3.0. The project describes itself as a work in progress and warns that misuse may cause instability or malfunction.