Game developers are building native Arm ports and Prism-optimised updates for Nvidia RTX Spark

Nvidia has revealed ahead of Computex that it's seeing "massive engagement" from game developers on the RTX Spark platform — and that engagement covers a wide spectrum of approaches. Some studios are simply optimising existing titles for the Prism emulation layer, others are building proper native Arm ports, and some are developing new games from scratch for Windows on Arm.

Mark Aevermann, Nvidia's marketing lead for RTX Spark, explained that the Prism emulation layer — required to run x86 games on the Arm-based hardware — won't necessarily tank performance across the board. The RTX Spark's top-end chip carries RTX 5070-level GPU performance, and Aevermann argues that GPU-bound games will largely sidestep emulation overhead: "Depending on the exact example, [RTX Spark] can be faster than an RTX 5070, slower than or equal to a 5070... For compute-heavy portions of applications, or games that are GPU bound, you wouldn't expect much effect to be there." Nvidia hasn't published any hard numbers comparing Prism-emulated performance against native x86 devices yet.

Nvidia has been working with Microsoft on this ecosystem for years, and Aevermann says the RTX Spark hardware was architected with full knowledge of how Prism operates — meaning the chip and the emulation layer were designed in tandem rather than bolted together after the fact. "At the end of the day we just want to ensure all the top games run and run great on RTX Spark," Aevermann said. "So we're going up each and every developers' software stack to make that vision come true."

No specific game titles or studios were named as part of the native Arm push, so the proof will come when RTX Spark hardware actually ships. If developer momentum holds, Windows on Arm gaming could be in a meaningfully better place than it's ever been — at least within Nvidia's corner of the market.