The "Cache & Memory Benchmark" remains famous. It measures read/write/copy speeds and latency for L1, L2, L3 caches and system RAM. Results can be compared online (though the original comparison server is long gone).

Portable “Engineer” versions from unverified sources typically:

Before recycling a pallet of PCs, you run Everest via USB on each one, generate HTML reports, and extract serial numbers of RAM/CPU/GPU to identify resale value. The CSV export feature makes this batch-processable.