fio vs FurMark

fio is a free storage I/O workload simulator for performance testing and reproducing bugs. Its job files can define multiple threads, processes and files, with sequential, random or mixed reads and writes using buffered, direct or raw I/O. Tune block and I/O size, I/O engine, queue depth, target files or devices, and job count. Documented engines include Linux io_uring and libaio, POSIX asynchronous I/O, and synchronous read/write options. Separate engines support HTTP GET and PUT requests to WebDAV or S3 endpoints and access to Ceph RADOS and RBD. Verification options can check written data after a workload, including repeated burn-in tests. Results are available in normal text, terse, JSON and JSON+ formats, plus bandwidth and latency logs; terse output is intended for scripts, tables or graphs. fio supports Linux, Solaris, AIX, HP-UX, macOS, NetBSD, OpenBSD, Windows, FreeBSD and DragonFly. The HTTP engine supports direct I/O only at depth 1, with scaling through multiple jobs.

FurMark is a free Windows application for GPU stress testing and graphics benchmarking. It applies a sustained 3D workload to examine thermals, cooling headroom, power limits, and overclock stability. OpenGL and Vulkan rendering paths are available where supported. Benchmark choices include 1080p, 1440p, and 4K presets, along with timed passes. Artifact-oriented checks help identify visual problems such as sparkling or corrupted textures, which may point to heat, memory strain, or unstable tuning. For sensor context, FurMark recommends pairing runs with vendor tools or overlays, including GPU-Z and HWiNFO. Downloads come as an installer or a portable edition that runs from a folder or USB stick without installation. It is aimed at overclockers, PC gamers and builders, reviewers, benchmarkers, and support technicians. The FAQ points to a forum for troubleshooting. Tests should be supervised, temperatures watched, and unsafe runs stopped. The listed plan costs nothing for personal testing on Windows 10/11.