Microsoft Surface Laptop Ultra Review: NVIDIA RTX Spark's High-End Performance

NVIDIA has finally entered the premium Windows laptop market with its long-awaited entry, and Microsoft’s Surface Laptop Ultra is among the first laptops powered by NVIDIA RTX Spark. This new Arm-based platform features a N1X processor that combines a Grace CPU, Blackwell RTX graphics, and up to 128GB of unified memory.

The Surface Laptop Ultra promises something that conventional Windows laptops struggle to offer, particularly for developers running large AI models locally. However, it’s entering an already competitive market dominated by Apple Silicon, AMD, Intel, and NVIDIA’s own GeForce RTX-powered laptops.

With prices starting at $2,599.99 and reaching nearly $6,000, the biggest question is whether its specialized capabilities justify the cost. Microsoft Surface Laptop Ultra Price and Configurations reveal that RTX Spark is NVIDIA’s platform branding, while N1X identifies the system-on-chip powering the laptop.

The N1X comes in 18-core and 20-core CPU configurations, paired with 5,120 and 6,144 CUDA cores, respectively. The initial US retail prices are as follows: $2,599.99 for a base model with 24GB of RAM, $3,299.99 for the same configuration but with Windows 11 Pro instead of Home.

Prices may vary depending on availability and promotions. It’s worth noting that models with 32GB or more feature Windows 11 Pro, while those with less than 32GB come with Windows 11 Home. The Surface Laptop Ultra Specifications reveal a range of features including three USB-C ports, USB-A, HDMI, a full-size SD card reader, and removable SSD storage.

Independent benchmarks show that RTX Spark’s greatest strength is its combination of NVIDIA CUDA acceleration and large unified memory capacity. In local AI testing, the N1X handled large language models that exceeded the dedicated VRAM of conventional gaming laptops.

When an AI model no longer fits entirely inside a GeForce RTX 5070 Laptop GPU’s 8GB VRAM, RTX Spark can deliver substantially faster inference by keeping the model within its shared memory pool. However, having more memory doesn’t automatically mean faster AI performance.

Apple’s M5 Pro and M5 Max remained competitive or faster in several tests, particularly with optimized inference frameworks. Outside AI workloads, results are mixed: the 20-core N1X performed approximately 18% faster than Apple’s M5 Pro in Blender OptiX GPU rendering.

The Surface Laptop Ultra also struggles to deliver the efficiency expected from a premium Arm-based laptop. Independent battery tests returned approximately nine to eleven hours of runtime, depending on the workload. These figures are respectable but generally shorter than those achieved by Apple’s latest MacBook Pro models.

Performance can also decline when unplugged: published tests recorded reductions of approximately 26% in a CPU workload and up to 40% in Photoshop. Combined with stronger CPU performance and more mature application support, Apple’s MacBook Pro remains the more compelling option for many productivity and creative workloads.

The Surface Laptop Ultra itself has received considerable praise for its aluminum construction, responsive haptic trackpad, keyboard, and exceptionally bright mini-LED touchscreen. Its 15-inch display supports a 120Hz refresh rate, with independent testing exceeding 1,000 nits in SDR.

Microsoft’s redesigned cooling system keeps fan noise relatively low under sustained workloads, although some reviewers reported noticeable coil whine. The laptop is equipped with three USB-C ports, USB-A, HDMI, a full-size SD card reader, and removable SSD storage.