RTX Spark vs the Fastest MacBook Pro (M5 Pro / M5 Max)

Summary

Hardware Canucks reviews the Surface Laptop Ultra with Nvidia’s RTX Spark/N1X chip, comparing it with Apple’s M5, M5 Pro, and M5 Max MacBook Pros, an AMD Strix Halo laptop, and an Intel gaming laptop with an RTX 5070. The review examines CPU and GPU performance, creator applications, local AI models, gaming, battery life, and the laptop’s hardware.

Platform, configurations, and price

RTX Spark is Nvidia’s system-on-chip platform, pairing Grace CPU cores—Cortex X925 performance cores and A725 efficiency cores—with a Blackwell GPU and shared unified memory. The reviewer notes that the CPU architectures are more than two years old.

The N1X is offered in different configurations, from an 18-core CPU and 5,120 CUDA cores to a 20-core CPU with more than 6,000 CUDA cores. Memory options range from 24GB to 128GB. The tested 128GB Surface Laptop Ultra costs close to $6,000. The review considers that expensive, especially since the 64GB configuration can include a 2TB SSD while the 128GB version has only 1TB.

For comparison, the reviewer cites a roughly $3,700 M5 Pro MacBook Pro with 64GB, a nearly $7,000 M5 Max with 128GB, and an AMD Strix Halo ZBook with 120GB that was on sale for under $4,500. The conclusion is that the N1X’s value depends heavily on whether its large shared-memory pool and Nvidia software support are useful to the buyer.

Performance findings

• CPU: The N1X generally trails Apple’s M5 chips, particularly in single-core performance. In sustained multicore tests, it is about 17% behind the M5 Pro, though it beats the tested Strix Halo processor in some CPU benchmarks. The reviewer sees the M5 Pro—not the M5 Max—as its more natural CPU competitor.
• GPU rendering: In Blender with OptiX ray tracing, the N1X renders about 18% faster than the M5 Pro and comes close to the RTX 5070 laptop GPU despite a lower power budget. HandBrake’s Nvidia encoder test did not work, and an attempted alternative preset also failed.
• Creator applications: Results are mixed or poor. The N1X finishes a Blender render more slowly than the M5 Pro and performs badly in the tested Photoshop and Lightroom workflows. Premiere Pro exports take roughly 20% longer than on the M5 Pro, while the M5 Max takes less than half as long. DaVinci Resolve narrows the gap to around 5% behind the M5 Pro, but the M5 Max remains much faster.
• Software support caveat: The reviewer emphasizes that Windows on ARM compatibility is a major limitation for creative work. The tested Premiere version lacks several hardware-accelerated and professional-format features. Lightroom Classic runs through Microsoft’s Prism translation layer. The reviewer argues that users should not buy the system based on promised software improvements when established alternatives already offer working support.

Local AI and unified memory

The reviewer tests six local models in LM Studio, from 12 billion to 70 billion parameters. Some Mac results use Apple’s MLX framework, while others use GGUF on both platforms, so the comparisons are not entirely like-for-like.

The N1X is not the fastest overall: the M5 Max leads many tests, and the N1X usually trails the M5 Pro on smaller or higher-quality models. However, the N1X beats the tested Strix Halo laptop in every model run and substantially outpaces the RTX 5070 when models exceed its 8GB of VRAM and spill into system memory. A 70-billion-parameter model also fits on the N1X, as well as on the 64GB M5 Pro, but not on the tested gaming laptop.

The review identifies the N1X’s main advantage as its large shared-memory pool combined with CUDA in a thin Windows laptop. It calls the platform a compelling option for some local-AI developers, but not enough to outperform the MacBook Pros across the board.

Gaming

Windows games on the N1X generally run through Microsoft’s Prism emulator; the CPU is emulated while the GPU runs natively. Nvidia and Microsoft have improved frame pacing and shader delivery, but compatibility remains uneven. The Mac comparisons also involve translation for several games.

In the tested games, the N1X often beats the M5 Pro, including in Cyberpunk 2077 and Baldur’s Gate 3. It performs well against the M5 Pro in some other titles and comes close to the RTX 5070 in Black Myth: Wukong. However, CPU-heavy Counter-Strike 2 favors the dedicated gaming laptop, and Marvel Rivals suffers from poor 1% lows and stuttering.

Three of the ten tested games did not work on the N1X: Battlefield 6, Rainbow Six Siege (anti-cheat incompatibility), and Doom Eternal. The overall conclusion is that it is more game-compatible than the tested Macs, but it is not a substitute for a dedicated gaming laptop.

Battery and unplugged performance

Battery life is a major weakness. In web browsing, the Surface lasts less than the M5 Pro and substantially less than the 16-inch M5 Max. In 4K YouTube playback, its runtime falls sharply: it lasts about 60% less than the M5 Pro and under a third as long as the base M5. It still beats the tested x86 laptops, but the reviewer says it falls short of expectations for an ARM-based platform.

The N1X also fails Nvidia’s claim that it retains roughly 95% performance on battery. In the reviewer’s tests, performance drops by about 26% overall, with HandBrake taking 27% longer and Photoshop performance falling 40%. The MacBooks show essentially no performance loss in the same unplugged testing.

Surface Laptop Ultra hardware

Despite the platform criticisms, the reviewer praises the laptop’s design and features:

• CNC-machined aluminum chassis, about 18mm thick and 2kg.
• 15-inch 3.2K touchscreen with variable refresh rate up to 120Hz.
• Display exceeds 1,000 nits in SDR, making it brighter than the compared MacBook Pros. Color coverage is similar, with slightly better measured accuracy.
• Haptic trackpad supports feedback in apps such as Premiere, Resolve, Photoshop, and Microsoft Office.
• Three USB4 Type-C ports, HDMI 2.1, USB-A, UHS-II card reader, and headphone jack.
• Magnetic USB-C charging connector, though it works with only one port; the supplied power cable is notably short.
• Replaceable SSD, unlike the integrated storage in the compared MacBooks. Its Gen 5 SSD benchmarks faster than the tested M5 Pro and M5 Max drives.
• The reviewer likes the keyboard and loud speakers, but finds vocals somewhat muffled compared with the MacBook Pro’s speakers.

Overall assessment

The review regards RTX Spark as an interesting first-generation platform, but one with substantial trade-offs in CPU performance, creator-software support, gaming compatibility, battery life, and unplugged performance. The reviewer’s recommended audience is narrow: AI developers who specifically need a large unified-memory pool and CUDA on Windows. They question the value of lower-memory configurations, arguing that an AI-focused laptop with less than 40GB of memory is difficult to justify.

Main speaker and disclosures

The main speaker is a Hardware Canucks reviewer presenting benchmark results and hands-on impressions. The review states that Microsoft loaned the laptop and that Nvidia covered travel and lodging for a briefing. The video was not sponsored, and the reviewer says no review direction was provided.