GeForce GTX 1080 (Pascal GPU) Tested in 3DMark Port Royal (DirectX Raytracing)

3DMark Port Royal DirectX Raytracing Benchmark

Last week, NVIDIA added DirectX Ray Tracing (DXR) support to GeForce GTX series, from the GTX 1060 6GB up to recent GTX 1660 (this DXR support is available in GeForce 425.31). Following this news, 3DMark Port Royal has been updated to support GeForce GTX.

3DMark Port Royal is the world’s first dedicated real-time ray tracing benchmark for gamers. I tested Port Royal (January 2019) with a RTX 2080 and a RTX 2070. Compared to GeForce GTX, GeForce RTX GPUs embark some RT cores, which are dedicated hardware to accelerate ray tracing operations. GeForce GTX, in the other hand, do not have such specific hardware and must use general-purpose shader cores to perform ray tracing operations.

Let’s see how a GeForce GTX 1080 handles the Port Royal benchmark. I also re-tested the RTX 2080 (DLSS not enabled).

Test System
CPU Intel Core i7-8700K @ 3.7GHz
Motherboard GIGABYTE Z390 Gaming X
Memory 16GB DDR4 Corsair Vengeance LED @ 3000MHz
PSU Corsair AX860i
Storage Samsung 840 Pro 256GB SSD
OS Windows 10 v1809 64-bit
6106 (graphics: 28.27 FPS)
ASUS ROG Strix GeForce RTX 2080 OC 8GB – driver: 425.31
1592 (graphics: 7.37 FPS)
ASUS ROG Strix GeForce GTX 1080 8GB – driver: 425.31

Ouch! In regular graphics benchmarks, the RTX 2080 is more or less 30% faster than a GTX 1080. But here, the difference is abyssal. According to this test, real time raytracing on GTX series is rather… pointless!

Related links:

3DMark Port Royal DirectX Raytracing Benchmark - GeForce GTX 1080 score