NVIDIA Releases RTX Path Tracing Update 1.9.0

The latest software update significantly boosts rendering performance and expands support for light and geometry counts.

Updated on Oct. 25, 2026 in Quantum Computing

Bold vector editorial illustration featuring an intricate, geometric metallic lattice structure, representing advanced real-time rendering data and high-performance computational geometry. — NVIDIA has released RTX Path Tracing 1.9.0, an open-source update that improves real-time rendering performance by 20% and introduces new GPU-accelerated component integrations. AI Illustration. Upload story photo >

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NVIDIA has launched version 1.9.0 of its open-source RTX Path Tracing project, bringing a 20% performance increase over the previous release. The update introduces expanded capacity for lights and geometry while adding support for Windows on ARM64.

Why it matters

The software update improves real-time rendering capabilities by moving key processes to the GPU and optimizing how lights and objects are handled within the system. These advancements allow developers to manage more complex scenes with greater efficiency.

The update supports up to 2 million lights and 262,144 resident geometries, a significant increase from previous limits of 512,000 lights and 65,536 geometries. Additionally, the system now features optional sub-sampling modes of 25%, 50%, and 75%.

The players

NVIDIA

NVIDIA is a multinational technology company that designs graphics processing units and system-on-a-chip units for the gaming, professional visualization, and data center markets.

The details

The renderer now offloads top-level acceleration structure generation to the GPU and enables Spatially Hashed Radiance Cache by default in real-time mode. New component integrations include Streamline 2.14.16, RTXDI 3.0, and the DirectX Agility SDK 1.619.6.

October 25, 2026: NVIDIA released RTXPT version 1.9.0.

The Tech Race

This release continues the evolution of NVIDIA's RTX Path Tracing project as it seeks to replace legacy rasterization techniques with more advanced light simulation. It positions the company against competitors by setting new benchmarks for real-time ray tracing complexity and GPU utilization.

Users and developers can expect improved workflow efficiency when rendering highly detailed scenes due to the increased light and geometry overhead. Additionally, the new support for Windows on ARM64 broadens the range of hardware capable of utilizing the latest rendering tools.

The takeaway

Developers should update to version 1.9.0 to take advantage of GPU-accelerated structure generation and improved object limits. Implementing these new settings can help maintain high frame rates while increasing the visual complexity of projects.