AMD Navi 21

Navi 21

Navi 21 XL

Navi 21 XT

Navi 21 XTX

Navi 21 KXTX

CGI Die Shot

Block Diagram

AMD's Navi 21 GPU uses the RDNA 2.0 architecture and is made using a 7 nm production process at TSMC. With a die size of 520 mm² and a transistor count of 26,800 million it is a very big chip. Navi 21 supports DirectX 12 Ultimate (Feature Level 12_2). For GPU compute applications, OpenCL version 2.1 can be used. Additionally, the DirectX 12 Ultimate capability guarantees support for hardware-raytracing, variable-rate shading and more, in upcoming video games. It features 5120 shading units, 320 texture mapping units and 128 ROPs. The GPU also contains 80 raytracing acceleration cores.

Graphics Processor

Released: Oct 28th, 2020

GPU Name: Navi 21

Codename: Sienna Cichlid

Generation: Navi II

Architecture: RDNA 2.0

Foundry: TSMC

Process Size: 7 nm

Transistors: 26,800 million

Density: 51.5M / mm²

Die Size: 520 mm²

Package: BGA-2425

Graphics Features

DirectX: 12 Ultimate (12_2)

OpenGL: 4.6

OpenCL: 2.1

Vulkan: 1.3

Shader Model: 6.8

WDDM: 3.2

GC: 10.3.0

Shader ISA: GFX10.3 (gfx1030)

DCN: 3.0.0

VCN: 3.0.0

SDMA: 5.2.0

MP0 / MP1: 11.0.7

Render Config

Shading Units: 5120

TMUs: 320

ROPs: 128

Compute Units: 80

RT Cores: 80

L0 Cache: 32 KB per WGP

L1 Cache: 128 KB per Array

L2 Cache: 4096 KB

L3 Cache: 128 MB

Max. TDP: 400 W

All RDNA 2.0 GPUs

AMD GPU Architecture History

2024 RDNA 4.0
2024 RDNA 3.5
2023-2024 CDNA 3.0
2022-2024 RDNA 3.0
2021 CDNA 2.0
2020 CDNA 1.0
2020-2024 RDNA 2.0
2019-2020 RDNA 1.0
2018-2022 GCN 5.1
2017-2020 GCN 5.0
2016-2020 GCN 4.0
2014-2019 GCN 3.0
2013-2017 GCN 2.0
2011-2020 GCN 1.0
2010-2013 TeraScale 3
2009-2015 TeraScale 2
2005-2013 TeraScale
2005-2007 Ultra-Threaded SE

Graphics cards using the AMD Navi 21 GPU

Name	Chip	Memory	Shaders	TMUs	ROPs	Base Clock	Boost Clock	Memory Clock
AMD Radeon RX 6900 XT	Navi 21 XTX	16 GB	5120	320	128	1825 MHz	2250 MHz	2000 MHz
AMD Radeon RX 6800 XT	Navi 21 XT	16 GB	4608	288	128	1825 MHz	2250 MHz	2000 MHz
AMD Radeon RX 6800	Navi 21 XL	16 GB	3840	240	96	1700 MHz	2105 MHz	2000 MHz
AMD Radeon RX 6900 XTX	Navi 21 XTXH	16 GB	5120	320	128	2075 MHz	2435 MHz	2250 MHz
AMD Radeon PRO W6800	Navi 21 GL-XL	32 GB	3840	240	96	2075 MHz	2320 MHz	2000 MHz
AMD Radeon Pro W6800X Duo	Navi 21 Pro-XLA	32 GB	3840	240	96	1800 MHz	1967 MHz	2000 MHz
AMD Radeon Pro W6900X	Navi 21 Pro-XTA	32 GB	5120	320	128	1825 MHz	2171 MHz	2000 MHz
AMD Radeon Pro W6800X	Navi 21 Pro-XLA	32 GB	3840	240	96	1800 MHz	2087 MHz	2000 MHz
AMD Radeon PRO V620	Navi 21 XT	32 GB	4608	288	128	1825 MHz	2200 MHz	2000 MHz
AMD Radeon RX 6950 XT	Navi 21 KXTX	16 GB	5120	320	128	1860 MHz	2310 MHz	2250 MHz

Navi 21 GPU Notes

Generation: Navi II
Codename: Sienna Cichlid / Gaming
Ray Tracing Cores: 1st Gen
Infinity Cache: 1st Gen
Graphics/Compute: 10.3.0
Shader ISA: GFX10.3 (gfx1030)
Display Core Next: 3.0.0
Video Core Next: 3.0.0
System DMA: 5.2.0
Platform Security Processor: 11.0.7

Per SIMD32:
- 10 KB Scalar Register File

Per CU:
- 16 KB Vector Data Cache
- 64 KB Local Data Share (GCN-Mode)

Per WGP:
- 16 KB Scalar Data Cache / K Cache
- 32 KB Instruction Cache
- 128 KB Local Data Share

Latest Drivers:
Windows 7:
64-bit: AMD Software: Adrenalin Edition 22.6.1

Windows 10 / 11:
64-bit: AMD Software: Adrenalin Edition: Latest
64-bit: AMD Software: PRO Edition 22.Q4

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