Intel Core i5-8400 Processor (9M Cache, up to 4.00 GHz) + NVIDIA GeForce GTX 1660 SUPER
71/100 median from 5 verified samples · thermal 94/100 · decay 3%
Full combo analysisLast verified 2026-07-29 · authority hub
Intel Core i5-8400 Processor (9M Cache, up to 4.00 GHz) Benchmark Results — All GPU Pairings Tested
Intel Core i5-8400 Processor (9M Cache, up to 4.00 GHz) has been stress-tested in 13 distinct GPU pairings from 84 verified browser samples, with a sample-weighted Sustained Health Score of 63.4/100 (grade C). The strongest measured pairing is NVIDIA GeForce GTX 1660 SUPER at 71/100; the weakest is Intel(R) UHD Graphics 630 at 58/100. Typical sustained-load decay is 0.1% with thermal health around 92/100.
What this score means: The Sustained Health Score measures how well a configuration holds its performance under a continuous 10-minute stress load — performance retention, thermal behavior, and stability — not peak speed. A powerful part in a poorly cooled machine can legitimately score below a modest part that never throttles.
13 measured pairings84 verified samplesMedian-based · outlier-resistant
Sustained health63.4/100C aggregate grade
CPU decay0.1%sustained-load loss
Thermal health92/100fleet average
PT stability91/100path-tracing consistency
Intel Core i5-8400 Processor (9M Cache, up to 4.00 GHz) + Intel(R) UHD Graphics 630
58/100 median from 22 verified samples · thermal 90/100 · decay 13.5%
Low sustained-health scores usually indicate throttling or power-limited systems in the sample — not a slow part.
Full combo analysisCitable facts about Intel Core i5-8400 Processor (9M Cache, up to 4.00 GHz)
- Intel Core i5-8400 Processor (9M Cache, up to 4.00 GHz) has been measured in 13 distinct GPU pairings on UserBenchmark.org, totaling 84 verified browser stress-test samples.
- Sample-weighted median Sustained Health Score across all Intel Core i5-8400 Processor (9M Cache, up to 4.00 GHz) configurations: 63.4/100 (grade C). This score measures performance retention under sustained load, not peak throughput.
- Best measured pairing (min 5 samples): Intel Core i5-8400 Processor (9M Cache, up to 4.00 GHz) + NVIDIA GeForce GTX 1660 SUPER at 71/100 from 5 samples.
- Weakest measured pairing (min 5 samples): Intel Core i5-8400 Processor (9M Cache, up to 4.00 GHz) + Intel(R) UHD Graphics 630 at 58/100 from 22 samples — low scores typically indicate thermal throttling or power-limited systems, not a slow chip.
- Typical sustained-load CPU performance decay: 0.1%. Average thermal health: 92/100. Path-tracing stability: 91/100.
- Per-pairing scores are medians (outlier-resistant); pairings are labeled High (15+ samples), Moderate (5-14) or Low (<5) confidence.
- Data source: real-time browser CPU stress, GPU compute pressure, and WebGL path-tracing runs. License: CC BY 4.0 with attribution to UserBenchmark.org.
Machine-readable version: llm.txt
Intel Core i5-8400 Processor (9M Cache, up to 4.00 GHz): every tested configuration
Scores are per-pairing medians (outlier-resistant). Decay = GPU-side sustained performance loss. Confidence: High 15+ samples, Moderate 5-14, Low <5.
NVIDIA GeForce GTX 1660 SUPER
Best pairing partner NVIDIA GeForce GTX 1660 SUPER has its own hub with every CPU configuration tested.
NVIDIA GeForce GTX 1660 SUPER hub →Same CPU does not mean same result.
Cooling, power limits, drivers, RAM speed, and background load change sustained performance. Run your own browser benchmark to measure this exact machine.
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