CNET’s computer testing process is a blend of rigorous lab benchmarks and real-world usage. For years, the core principle has remained consistent: deliver thorough, data-backed reviews. This involves evaluating devices—laptops, desktops, tablets, and hybrids—through controlled performance tests in CNET Labs, combined with practical experience from expert reviewers. The final assessment considers both objective data and subjective impressions.
Setting Up for Accuracy
When a computer arrives for testing, CNET configures it as a typical user would. A key step is disabling invasive privacy and data collection features. This is critical because pre-installed software often impacts performance, and users should know how clean a device runs after removing unnecessary bloatware. Next, the operating system (OS), graphics drivers, BIOS, and manufacturer utilities are updated to ensure consistent results. Tools like Sandra, CPU-Z, and GPU-Z are used to verify the system’s specifications.
Benchmarking: Core and Specialized Tests
CNET employs a layered benchmarking approach. A core set of tests is run on every compatible system, while an extended set caters to specific use cases like gaming or content creation. The software suite adapts over time as technology evolves, but current essential tests include:
CPU Performance: Geekbench and Cinebench
- Geekbench 6: Measures both single-core and multi-core CPU performance, plus GPU capability (Vulkan on Windows, Metal on macOS). On Android, Apple devices, and Chromebooks, CPU and compute tests are run.
- Cinebench 2024 and 2026: Assesses pure CPU processing power for 3D rendering in Windows and macOS environments.
Real-World Simulation: PCMark 10 and 3DMark
- PCMark 10: Though being phased out, still simulates common tasks like web browsing, video conferencing, and editing.
- 3DMark (Fire Strike Ultra, Time Spy, Steel Nomad): Evaluates DirectX 11 and 12 graphics performance, vital for gaming computers. Storage performance is also tested with 3DMark Storage.
Gaming Tests: Tomb Raider, Guardians of the Galaxy, Rift Breaker, and New Titles
- Shadow of the Tomb Raider: A balanced test that stresses both CPU and GPU.
- Guardians of the Galaxy: Pure GPU performance test.
- Rift Breaker: Combines action and simulation, stressing both CPU and GPU.
- Assassin’s Creed Shadows and F1 24: The latest additions, providing benchmarks for modern gaming workloads.
These games are run at 1,920×1,080 resolution with varying quality settings to provide a comprehensive performance profile.
Battery Life: Real-World Streaming Test
To assess battery life, computers are set to prevent sleep mode, notifications are disabled, and screen brightness/volume are set to 50%. A looped YouTube video is streamed over Wi-Fi in Chrome, and Windows’ built-in battery report is used to measure run time.
Browser Performance: JetStream 2, MotionMark, WebXPRT 3
These browser-based tests evaluate Chromebook performance and are occasionally run on Windows systems for comparison.
Beyond the Benchmarks
Additional testing includes running benchmarks on battery power to measure performance impact, stability loops to assess thermal throttling, and discretionary tests such as DLSS, FidelityFX Super Resolution, and XeSS technologies. When testing is updated, CNET double-tests both old and new versions to maintain a reliable comparison database.
CNET’s meticulous approach ensures reviews are based on measurable data, giving consumers clear insights into performance.
The result is a detailed comparison chart that puts each device’s scores in context alongside similar products, allowing for informed purchasing decisions.
