PowerColor Hellhound Radeon RX 7900 XTX Spectral White Review

We tested all of the graphics cards represented in this article on a Gigabyte X570 Pro Wi-Fi motherboard, equipped with a Ryzen 7 5800X3D CPU and 16GB of G.SKILL DDR4 RAM clocked at 3,200MHz. The first thing we did when configuring the test system was enter the UEFI and set all values to their "high performance" defaults, then we disabled any integrated peripherals that wouldn't be put to use and enabled Resizable BAR support. The memory clock was dialed-in to its optimal performance settings using its XMP profile and the solid-state drive was then formatted and Windows 11 Professional installed and fully updated. When the Windows installation was complete, we installed all of the drivers, applications and benchmark tools necessary to complete our tests.

Our Test System Configuration:

LuxMark v4.0 Benchmarks

LuxMark is a cross-platform, OpenCL-accelerated 3D rendering benchmark. It's a tool based on the open source LuxRender physically-based spectral rendering engine, which accurately models the transportation of light and supports high dynamic range. LuxRender features a number of material types to allow rendering of photo-realistic and artistic scenes. LuxRender is free software, licensed under the GPL, that offers plugins for packages like Blender, Maya, Cinema 4D and 3DS Max.

The PowerColor Hellhound RX 7900 XTX ended up trailing the AMD reference card by a few percentage points here, which resulted in it falling behind the RTX 3090 Ti -- in one test at least. The Hellhound was faster than the 3090 Ti in the mode taxing Food scene but trailed in the Hall Bench scene.

IndigoBench Rendering Benchmarks