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PCBenchmark/Results/Intel Core i5-8257U + Intel Iris Plus Graphics 645 Mobile browser benchmark
PC SCORE24OUT OF 100
SYSTEM GRADEE
Good quality run 4 September 2026 · 15:02 EEST

Intel Core i5-8257U+Intel Iris Plus Graphics 645 Mobile

A completed baseline run. Review quality and raw metrics before comparing it.

SUITEFULL SYSTEM MODESTANDARD GPU APIWebGPU ENGINE1.2.1 SCORE SCALEPROVISIONAL R4 DURATION00:56
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01 / WORKLOAD BREAKDOWN

Performance by workload.

CPU and GPU use the current adaptive scale for the same workload, mode and graphics backend. When a faster validated device becomes the reference, older comparable scores are projected onto the new scale without changing their raw measurements. VRAM remains a pass/fail diagnostic.

CPU25

Processor throughput

Single thread
299.94 Mops/s
Multi thread
1,454.69 Mops/s
Compression proxy
451.3 MB/s
GPU2

Graphics throughput

Estimated shader work
210.8 G shader ops/s
Render throughput
29.0 FPS
Frame time p95
33.50 ms
MEMORY71

System memory

Effective bandwidth
24.67 GB/s
Latency proxy
28.8 ns
Browser RAM class
16 GB class
VRAMPASS

GPU-memory diagnostic

Transfer bandwidth
1.68 GB/s
Tested allocation
384 MB
Validation errors
0 errors
02 / RELATIVE PERFORMANCE

What sits above and below this hardware.

Each ladder uses one consistent source. Validated PCBenchmark medians take priority when the matching workload cohort has enough approved runs; until then, the report shows a clearly marked catalog estimate.

CPU POSITION

Intel Core i5-8257U comparison ladder

ESTIMATE

Specification-based estimateApproximate browser CPU capacity derived from official core, thread and clock specifications for Coffee Lake desktop processors. It is not a measured benchmark.

  1. Intel Core i9-8950HKCoffee Lake · 6 cores / 12 threads · 2018
    +78.3%higher estimate
  2. Intel Xeon E-2176MCoffee Lake · 6 cores / 12 threads · 2018
    +64.4%higher estimate
  3. Intel Core i7-8557UCoffee Lake · 4 cores / 8 threads · 2019
    +17.8%higher estimate
  4. Intel Core i5-8257UCoffee Lake · 4 cores / 8 threads · 2019
    BASECATALOG REFERENCE
  5. Intel Core i3-8109UCoffee Lake · 2 cores / 4 threads · 2018
    −2.0%lower estimate
GPU POSITION

Intel Iris Plus Graphics 645 Mobile comparison ladder

ESTIMATE

Theoretical FP32 estimatePercentages compare theoretical FP32 compute within the desktop GPU catalog; they are not measured PCBenchmark or gaming performance.

  1. Intel Arc A310Alchemist(Arc 3) · 4 GB VRAM · 2022
    +232.1%higher estimate
  2. Intel Xe DG1Xe Graphics · 4 GB VRAM · 2020
    +144.4%higher estimate
  3. Intel H3C XG310H3C Graphics · 8 GB VRAM · 2020
    +108.6%higher estimate
  4. Intel Iris Plus Graphics 645 MobileHD Graphics-M(Coffee Lake) · 2019
    BASECATALOG REFERENCE

No slower peer is available in this comparison set.

03 / STABILITY48.3%

Sustained-load signal

This signal summarizes frame delivery during the timed graphics phase. It can reveal an inconsistent run, but it is not a temperature sensor.

COMPLETEDYES SAMPLE WINDOW56 SEC DROPPED FRAMES51.72%
04 / ENVIRONMENTRUN CONTEXT

What the browser disclosed

Selected suite
Full system
Platform family
Windows
Logical processors
8
Browser RAM class
16 GB · rounded/capped
Graphics API
WebGPU
Run quality
Good · 75/100
Score fingerprint
adaptive-v2.0 / 1.2.1
Current adaptive scale
Provisional revision 4 / 28 August 2026
i
BROWSER BENCHMARK, NOT HARDWARE ATTESTATION

Read this result in its proper context.

It measures this browser’s execution path under the conditions of this run. Cooling, power mode, drivers, background processes and browser updates can change the outcome. CPU/GPU names may be supplied manually or matched to the catalog from a browser hint. Compare only matching suite, mode, engine version and graphics backend. NOT RUN categories were not measured and are not zero-performance results.

Read methodology & limitations ↗
05 / RAW RESULT DATAInspect JSON + 
{
    "test_suite": "all",
    "test_mode": "standard",
    "duration_ms": 56491,
    "system": {
        "cpu_name": "Intel Core i5-8257U",
        "gpu_name": "Intel Iris Plus Graphics 645 Mobile",
        "logical_cores": 8,
        "memory_gb": 16,
        "platform": "windows",
        "gpu_api": "webgpu",
        "processor_id": 1629,
        "graphics_card_id": 2434
    },
    "metrics": {
        "stability": {
            "duration_seconds": 56,
            "completed": true,
            "dropped_frames_percent": 51.715
        },
        "cpu": {
            "single_core_ops_per_second": 299936183.546,
            "multi_core_ops_per_second": 1454685956.537,
            "compression_mb_per_second": 451.281
        },
        "memory": {
            "bandwidth_gbps": 24.674,
            "latency_ns": 28.765
        },
        "gpu": {
            "frames_per_second": 28.956,
            "compute_gflops": 210.773,
            "frame_time_p95_ms": 33.5
        },
        "vram": {
            "tested_mb": 384,
            "bandwidth_gbps": 1.684,
            "errors": 0
        }
    },
    "raw_points": {
        "cpu": 11.20679426,
        "gpu": 0.17564417
    },
    "original_scores": {
        "cpu": 25,
        "gpu": 2,
        "memory": 71,
        "vram": 0,
        "overall": 24,
        "grade": "E"
    },
    "current_scores": {
        "cpu": 25,
        "gpu": 2,
        "memory": 71,
        "vram": 0,
        "overall": 24,
        "grade": "E",
        "snapshot_revision": 4
    },
    "runner_version": "1.2.1",
    "workload_signature": "browser-1.2",
    "scoring_version": "adaptive-v2.0"
}
SAME SUITE, FRESH CONDITIONS

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