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DPC Latency Ranking - Which notebooks and Windows tablets offer the lowest latency

Latencies measured on a MacBook Air (Early 2020) under Windows (Bootcamp)
Latencies measured on a MacBook Air (Early 2020) under Windows (Bootcamp)

We use the software LatencyMon to find the maximum DPC (Deferred Procedure Call) latencies in a given demanding workload. Large values mean that the buffers can run empty and that audio and video files can be interrupted. Low DPC latencies are important to avoid stuttering and interruptions in the playback of video (e.g. for video cutters) and audio applications (e.g. DJ software, audio creation, etc.).

Our test consists of the following tasks:

  1. Use balanced power plan and start LatencyMon and the Task Manager.
  2. Open the default browser (Edge on Windows) and open notebookcheck.com. Open five additional tabs of recent articles (including at least one review). When loaded, open the tab with the review and scroll all the way to the bottom of the page.
  3. Then close all tabs and open YouTube with our 4k60 test video: www.youtube.com/watch Pause the playback and set the quality to 2160p60 (4k) and enable sound. Enable "Stats for nerds" and rewind the video. Wait for it to be buffered and open the task manager to see CPU and GPU load. Create a screenshot during the benchmark. Note the average CPU load, GPU load, and the total dropped frames.
  4. When the video finishes, close the browser and start Prime95. Start the In-place large FFTs test and let it run for 10 seconds. Stop the Prime95 load and exit Prime95.
  5. Stop the recording in LatencyMon and save the result: Highest measured interrupt to process latency (in microseconds - μs).

The results are given in µs, which means smaller values are better!

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PosModelScreen ResolutionScreen TypeDPC Latencies / LatencyMon interrupt to process latency (max), Web, Youtube, Prime95(-)
Dell XPS 13 9300 4K UHD3840x2400IPS
3905.7
Dell XPS 15 9500 Core i7 4K UHD3840x2400IPS
9855.5
Dell XPS 17 9700 Core i7 RTX 2060 Max-Q3840x2400IPS
651.5
Dell Precision 5550 P91F3840x2400IPS
305
Dell Precision 5000 5750 P92F3840x2400IPS
596.9
Dell XPS 13 9310 Core i7 4K3840x2400IPS
1271.96
Asus ROG Flow X13 GV301QH3840x2400IPS
3927.1
Lenovo ThinkPad X1 Carbon G9-20XWCTO1WW3840x2400IPS LED
459.2
Acer ConceptD 9 Pro3840x2160IPS
849.6
Lenovo ThinkPad X1 Carbon G7 20R1-000YUS3840x2160IPS
5639.9
Gigabyte Aero 17 HDR XB3840x2160IPS
1933.4
Gigabyte Aero 15 OLED XB-8DE51B0SP3840x2160OLED
1877.3
Razer Blade 15 RZ09-03283840x2160AMOLED
905.1
Chuwi AeroBook Plus3840x2160IPS
703
Razer Blade Stealth Core i7 GTX 1650 Ti Max-Q 4K3840x2160IPS
4572
HP Envy 17t-cg0003840x2160IPS
3071
MSI Creator 17 A10SGS3840x2160Mini-LED IPS-Level
972.6
Dell Latitude 74103840x2160IPS
791.4
Lenovo ThinkPad T15 Gen1-20S7S02U003840x2160IPS LED
1809.5
PosModelScreen ResolutionScreen TypeDPC Latencies / LatencyMon interrupt to process latency (max), Web, Youtube, Prime95(-)
Asus ROG Zephyrus Duo 15 GX550LXS3840x2160IPS
3374.7
Razer Blade 15 Studio Edition 20203840x2160OLED
715.7
HP Envy 15-ep0098nr3840x2160AMOLED
5214.4
Dell Precision 75503840x2160IPS
10043.1
Asus Zephyrus M15 GU502L3840x2160IPS
1481.1
Asus ZenBook Flip S UX3713840x2160OLED
373
MSI GT76 Titan DT 10SGS3840x2160IPS
10615.5
HP ZBook Firefly 15 G73840x2160IPS LED
3860.9
Schenker XMG Ultra 17 Comet Lake3840x2160IPS
141.6
MSI Creator 153840x2160IPS
249.6
Asus ProArt StudioBook Pro 15 W500G5T3840x2160IPS
1938.1
Schenker Compact 173840x2160IPS
595.7
Asus ZenBook UX535-M014403840x2160IPS
773.2
HP Pavilion 13-bb0015cl3840x2160IPS
2333.87