Shopping Blog
Shopping guides, product comparisons, and buying checklists
5 expert guides
Check a restored backup ZIP: damage that file counts miss
Test eight synthetic files with relative paths and SHA256 hashes. Reproduce missing and changed files, read the CSV results and understand what this restore test cannot prove.
2026-09-28
Choosing an AI laptop: app compatibility, memory and 3-year costs
Check actual app and peripheral compatibility, memory, battery and warranty instead of NPU numbers. Learn how to collect prices and cost inputs for a three-year comparison, including a scenario with zero resale proceeds.
2026-07-26
External SSDs: USB 10 Gbps versus Thunderbolt 4
Separate link bandwidth from sustained file transfers, calculate 100 GB copy times and evaluate source, cable, thermal, capacity and backup constraints.
2026-06-08
Choose a programming keyboard: layout, noise and connection tests
Use repeatable shortcut, typing, noise, wake and keymap tests, plus a weighted example and repair checklist, to compare keyboards for your own work.
2026-06-07
How to choose air purifier capacity using room area and specifications
Choose an air purifier using measurable criteria: room area, certified coverage, CADR, noise, power consumption, replacement filters and safety information.
2026-03-27