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| The Surface Laptop Ultra is said to feature an excellent keyboard. |
Hands-on report exposes thermal challenges and software limitations in Microsoft's upcoming powerhouse laptop
Almost two months have passed since Microsoft unveiled the Surface Laptop Ultra, sending shockwaves through the tech industry with promises of groundbreaking ARM-based performance. In the meantime, Microsoft has started shipping the cheaper Surface Laptop 8, which we reviewed a few days ago (curr. $1,399 on Amazon). While the company has not revealed more information yet, leaks have begun to fill in the gaps. For instance, an engineering sample appeared on Cinebench 2026 earlier this month.
Now, a hands-on report from Fouquin on TechPowerUp forums has expanded upon this prior leak with more information about Microsoft's unreleased laptop. Allegedly, Fouquin spent roughly a month with a Surface Laptop Ultra prototype labelled EV1.5. In short, the 'review' paints a picture of strong hardware that is currently restricted by immature software.
Hardware Foundation Shows Promise Despite Software Hurdles
The Surface Laptop Ultra represents Microsoft's most ambitious foray into high-performance ARM computing, featuring Qualcomm's Snapdragon X Elite processor paired with NVIDIA's mysterious "RTX Spark" graphics solution. This combination aims to challenge traditional x86 laptops while maintaining the power efficiency advantages of ARM architecture.
According to Fouquin's extensive testing, the hardware itself demonstrates impressive potential. The prototype unit booted with outdated Windows-on-ARM (WoA) graphics drivers dating to November 2025. According to Fouquin, these cause erratic GPU clock speeds, regular stuttering and repeated system crashes during certain GPU compute workloads and selected games. Reportedly, newer 616.00 preview drivers did not improve matters either, and even introduced a new screen-lockup bug during prolonged use.
For those seeking the complete details of Fouquin's month-long testing journey, the full TechPowerUp forum thread provides comprehensive insights into the prototype's behavior.
Display and Thermal Performance Under Scrutiny
Setting software aside, Fouquin added that the laptop's 15-inch Mini LED display exhibited uneven local dimming and disabled Nvidia G-Sync functionality. These display issues suggest that Microsoft's quality control for early prototypes may still need refinement, though final production units could potentially address these concerns.
Thermal performance emerged as another significant concern. The Surface Laptop Ultra could only sustain around 35 W-50 W CPU performance and 95 W-105 W GPU performance while hitting 98°C-100°C and 80°C–90°C, respectively. These temperature ranges indicate that Microsoft's cooling solution may struggle to maintain peak performance under sustained loads.
Gaming and AI Workloads Face Significant Obstacles
Drivers also hampered attempts to benchmark the RTX Spark's performance in AI workloads. Supposedly, CUDA-based tests failed to execute correctly, forcing Fouquin to fall back to slower CPU-based and Vulkan Compute paths. Similarly, running games like Helldivers 2 caused the system to crash after a few minutes.
These issues highlight the ongoing challenges facing Windows-on-ARM adoption, particularly for demanding applications and games that rely heavily on optimized graphics drivers.
Design and Build Quality Observations
The Surface Laptop Ultra has a modular bottom panel, but snap-on aluminium covers prevent accessing most components. This design choice reflects Microsoft's typical approach to laptop construction, prioritizing aesthetics and structural integrity over user-serviceability.
Industry observers have noted that the modular design could facilitate easier manufacturing and potential repair options, though the snap-on covers indicate that Microsoft intends to maintain control over internal access.
Pricing Speculation and Market Positioning
Fouquin speculates that the Surface Laptop Ultra could start at $2,799 with 24 GB RAM and 512 GB of storage, with 128 GB models breaching $4,499. Ultimately, this seems more like a prediction than anything at this stage.
These potential price points would position the Surface Laptop Ultra firmly in the premium laptop segment, competing directly with high-end workstations and gaming laptops from established players like Dell, Lenovo, and Razer.
Industry Reactions and Future Outlook
The leaks have generated considerable discussion within the tech community. Windows Central's Zac Bowden commented on the unfolding situation, noting that early prototype issues are not uncommon for ambitious hardware projects.
The Surface Laptop 8 review provides an interesting contrast, showing that Microsoft can deliver polished ARM experiences at more accessible price points.
What This Means for Prospective Buyers
For consumers eagerly anticipating the Surface Laptop Ultra, these leaks suggest that patience may be required. While the hardware foundation appears promising, the software ecosystem needs significant maturation before the device can deliver on its full potential.
Microsoft has historically used early prototype feedback to refine its products before final release. The company's track record with Surface devices suggests that many of the issues identified by Fouquin could be addressed through driver updates, firmware improvements, and manufacturing refinements before the official launch.
The ARM Laptop Landscape
The Surface Laptop Ultra represents a critical test for Windows-on-ARM adoption in the premium segment. While Apple has demonstrated the potential of ARM architecture with its M-series chips, Microsoft's partnership with Qualcomm and NVIDIA aims to replicate this success in the Windows ecosystem.
The performance and compatibility challenges highlighted in these leaks underscore the complexity of transitioning an established computing platform to new architecture while maintaining broad application support.
Conclusion
The Surface Laptop Ultra prototype leaks paint a complex picture of a device with significant potential hampered by early software limitations. While the hardware specifications and design suggest a capable machine, the driver issues, thermal constraints, and software compatibility problems indicate that Microsoft still has work to do before the device is ready for prime time.
As development continues and Microsoft works to address these issues, industry observers will be watching closely to see if the Surface Laptop Ultra can deliver on its ambitious promises. For now, prospective buyers should temper expectations and wait for official release and thorough reviews before making purchasing decisions.
The Surface Laptop Ultra is expected to launch later this year, with Microsoft yet to announce an official release date or final specifications.
Source : TechPowerUp, Zac Bowden
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| A close-up of Nvidia's RTX Spark chipset. |
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| The Surface Laptop Ultra has a modular bottom panel, but snap-on aluminium covers prevent accessing most components. |
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| The Surface Laptop Ultra has a small front-lip to help open its display. |
