MemTest86 vs Quick CPU

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.

Quick CPU is a Windows utility for monitoring, tuning, and stability-testing Intel and AMD processors. Real-time views show temperature, power, voltage, frequency, core usage, and power management. Its stability tests apply controlled loads to selected cores or threads using multiple test types. Tuning includes core parking, Intel Turbo Boost and AMD Precision Boost policies, performance hints, and power modes; Speed Shift and FIVR controls are available for Intel CPUs. Users can create, activate, clone, export, and restore Windows power plans. System-tray monitoring also displays CPU, memory, and GPU activity. Light and dark modes, customizable graphs, and dashboard elements adjust the interface. The installer targets.NET Framework 4.7.2 and is listed as tested on Windows 10 and 11 x64. A free plan is available; Pro costs $27 a year and Pro-Extended costs $49 a year.