AMD Radeon RX 7900 XT Graphics Card (20GB GDDR6) XFX Speedster MERC310

Product Overview

The AMD Radeon RX 7900 XT delivers high-end 1440p and entry-level 4K rasterisation performance built on the RDNA 3 architecture. With 5,376 stream processors across 84 compute units and a generous 20 GB GDDR6 frame buffer on a 320-bit bus, this card targets enthusiasts who want ample VRAM for modern titles, texture-heavy workloads, and light compute tasks without stepping up to the flagship XTX model. The chiplet-based Navi 31 GPU uses a 5 nm graphics compute die paired with 6 nm memory cache dies, yielding 58 billion transistors and 80 MB of second-generation Infinity Cache that effectively boosts memory bandwidth to 2.9 TB/s. A typical board power of 300 W means a quality 750 W power supply is recommended, fed by dual 8-pin PCIe connectors.

In gaming scenarios the RX 7900 XT excels at 1440p ultra settings and remains playable at 4K with moderate ray-tracing or FSR 3 upscaling. The 20 GB VRAM allocation future-proofs against rising texture budgets and benefits content creators working in Blender, DaVinci Resolve, or AI inference workloads that demand large model weights. Dual media engines provide hardware AV1 encode and decode alongside HEVC and H.264, making it a capable streaming and video-editing companion. Display outputs comprise two DisplayPort 2.1 ports, one DisplayPort 1.4a, and one HDMI 2.1a, supporting up to 8K 165 Hz or 4K 480 Hz panels.

Key Features & Hardware Capabilities

• Architecture & Execution Units: RDNA 3 chiplet design with 5,376 stream processors (84 compute units), 84 second-generation ray accelerators, 84 AI accelerators, 336 texture mapping units, and 192 render output units. The 5 nm GCD and 6 nm MCDs deliver 58 billion transistors.
• Memory Subsystem: 20 GB GDDR6 running at 20 Gbps across a 320-bit interface, providing 800 GB/s raw bandwidth. Second-generation Infinity Cache of 80 MB reduces VRAM pressure and lifts effective bandwidth to approximately 2.9 TB/s.
• Clock Speeds & Power: Base clock up to 1,775 MHz, game clock up to 2,175 MHz, boost clock up to 2,535 MHz. Total board power rated at 300 W; dual 8-pin PCIe power connectors required. Recommended system PSU: 750 W or higher.
• Modern Feature Support: DirectX 12 Ultimate, Vulkan 1.3, OpenGL 4.6, OpenCL 2.1. Second-generation ray tracing, FSR 3 frame generation, Radeon Super Resolution, AV1 hardware encode/decode, DisplayPort 2.1 UHBR13.5, HDMI 2.1a VRR and ALLM.

Technical Specifications (Generic RX 7900 XT — 20GB)