Windows on ARM's Prism Emulation: Performance Tested Across 31 Apps

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A comprehensive evaluation of Windows on ARM's Prism emulation technology, tested on the Dell XPS 13 9315. The study examines the performance of 31 popular apps, shedding light on the capabilities and limitations of ARM-based Windows devices.

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Windows on ARM: A New Era of Emulation

Microsoft's Windows on ARM platform has taken a significant leap forward with its Prism emulation technology. This advancement allows ARM-based Windows devices to run x86 and x64 applications, potentially bridging the gap between ARM and traditional x86 architectures. A recent study conducted by PCMag has put this technology to the test, evaluating the performance of 31 popular apps on an ARM-based Windows device 1.

The Test Subject: Dell XPS 13 9315

The evaluation was performed on the Dell XPS 13 9315, a sleek and portable laptop powered by Qualcomm's Snapdragon 8cx Gen 2 processor. This device represents the current generation of Windows on ARM hardware, offering a balance of performance and energy efficiency 2.

Performance Across Various Categories

The study encompassed a wide range of applications, including productivity tools, creative software, and utilities. Here's a breakdown of the findings:

  1. Office and Productivity: Microsoft Office apps performed well, with Word and Excel running smoothly. However, some users reported occasional lags in PowerPoint.

  2. Creative Suite: Adobe's Creative Cloud apps showed mixed results. Photoshop and Lightroom ran adequately, but resource-intensive applications like Premiere Pro faced challenges.

  3. Web Browsers: Chrome and Firefox performed satisfactorily, though not as smoothly as their native ARM versions.

  4. Development Tools: Visual Studio Code ran without major issues, but some developer-specific tools faced compatibility challenges.

  5. Gaming: While not optimal for gaming, some less demanding titles were playable through emulation.

Emulation Efficiency and Limitations

The Prism emulation technology demonstrated impressive capabilities, allowing many x86 applications to run on ARM hardware. However, the study revealed that emulation comes with a performance cost. CPU-intensive tasks, in particular, showed noticeable slowdowns compared to native x86 systems.

Battery Life and Thermal Performance

One of the key advantages of ARM-based systems is their energy efficiency. The Dell XPS 13 9315 showcased excellent battery life, even when running emulated applications. This long-lasting performance, coupled with the device's fanless design, highlights the potential of ARM-based Windows devices for mobile productivity 2.

Future Outlook and Developer Support

While the current state of Windows on ARM shows promise, the study emphasizes the need for increased developer support. Native ARM versions of popular applications could significantly enhance performance and user experience on these devices.

As Microsoft continues to refine its emulation technology and more developers optimize their software for ARM architecture, the ecosystem is expected to grow stronger, potentially reshaping the landscape of portable computing.

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