Microsoft’s most expensive Surface Laptop Ultra has reportedly sold out in some markets, despite a price calculated to frighten the procurement department.
According to DDay, the RTX Spark configuration with 128GB of unified memory and a 1TB SSD costs $5,899.99 in Microsoft’s US store. DDay reports that the 128GB version sold out within hours of pre-orders opening in France and Germany.
Microsoft has not published sales volumes or initial inventory figures, leaving the balance between strong demand and limited supply unresolved. An unavailable configuration provides precious little evidence of a stampede when nobody knows how many machines were offered.
The strongest argument for these laptops is Nvidia’s software ecosystem, particularly for professionals whose existing workloads already depend on CUDA.
RTX Spark supports CUDA and TensorRT, offering developers a familiar platform for local AI work alongside Nvidia’s graphics tools. Avoiding a lengthy software migration can make expensive hardware easier to justify, even when the invoice requires a stiff drink.
Its unified memory architecture lets the CPU and GPU share a large pool dynamically, giving demanding workloads access to substantially more memory. The 128GB headline describes shared system capacity, so Windows and other applications consume part of that allowance.
AMD’s Ryzen AI Max 400 series offers a larger pool of up to 192GB, with up to 160GB dedicated to GPU workloads. Memory capacity alone doesn’t tell the whole story when buyers need specific libraries and applications to run with minimal disruption.
Nvidia claims RTX Spark can run models containing up to 120 billion parameters with context windows reaching one million tokens. Those are vendor claims, with practical performance depending on the model and the configuration used to run it.
Running suitable models locally could appeal to researchers and businesses handling sensitive information, while reducing their dependence on recurring cloud inference charges.
Memory bandwidth remains a separate consideration, since fitting a large model into RAM does not guarantee fast inference. The Fruity Cargo Cult Apple specifies up to 614GB/s for its M5 Max, which supports up to 128GB of unified memory.
Microsoft’s top Surface configuration pairs a 20-core Grace CPU with a Blackwell GPU with 6,144 cores and runs Windows 11 Pro. The cheaper US entry model costs $2,599.99 and includes 24GB of unified memory alongside a 512GB SSD.
