AMD RDNA3 GPU Architecture Deep-Dive: 7900 XTX Drivers, Rasterization, & Ray Tracing

Sponsor: Crucial DDR5 Memory https://geni.us/XKQaQ
This video will cover AMD’s RX 7900 XTX and 7900 XT GPUs as they approach their release date of December 13, 2022, and will go over the company’s architectural high points as it positions to compete with NVIDIA and the RTX 4080. The RX 7900 XTX is a chiplet-based (MCM) GPU with GCDs and MCDs — one GCD (the die containing the graphics logic itself) and multiple MCDs (memory cache dies) forming the GPU. We’ll talk about ray tracing on RDNA3 / 7900 GPUs, geometry culling, ray culling, compute unit design updates, cooler and thermal design, and more.

Watch our video about the cooler design of the 7900 XTX and its unique feature: https://www.youtube.com/watch?v=8eSzDVavC-U

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TIMESTAMPS

00:00 – AMD RDNA3 GPUs (RX 7900 XTX & RX 7900 XT)
00:57 – Architecture Video Overview & Goals
01:38 – Terminology, Layout, & Chiplets
05:41 – AMD Primitive Geometry Improvements
10:10 – Compute Unit Design
11:50 – AMD RDNA3 Cache System
15:12 – Ray Tracing on AMD RDNA3
15:52 – Chiplet Design Benefits & Latency
18:40 – Cost & Engineering Limitations
21:58 – RX 7900 XTX PCB Layout Basics
25:30 – Cooler Design, Thermal Interface, & Vapor Chambers
26:16 – AMD’s Improved Drivers & Software Updates
31:42 – Trying to get Partners to Build Quality

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Steve Burke: Host, Writing
Jeremy Clayton: Writing
Vitalii Makhnovets: Editing
Mike Gaglione: Editing