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PowerColor Red Devil RX 6950 XT

AXRX 6950 XT 16GBD6-3DHE/OC

Graphics Processor: Navi 21
Cores: 5120
TMUs: 320
ROPs: 128
Memory Size: 16 GB
Memory Type: GDDR6
Bus Width: 256 bit

GPU

I/O

Rear

Box

Graphics Processor

GPU Name: Navi 21

GPU Variant: Navi 21 KXTX
(215-121000289)

Architecture: RDNA 2.0

Foundry: TSMC

Process Size: 7 nm

Transistors: 26,800 million

Density: 51.5M / mm²

Die Size: 520 mm²

Chip Package: BGA-2425

Graphics Card

Release Date: May 10th, 2022

Generation: Navi II
(RX 6000)

Predecessor: Navi

Successor: Navi III

Production: Active

Bus Interface: PCIe 4.0 x16

Clock Speeds

Base Clock: 1860 MHz

Game Clock: ~~2100 MHz~~
2226 MHz (+6%)

Boost Clock: ~~2310 MHz~~
2435 MHz (+5%)

Memory Clock: 2250 MHz
18 Gbps effective

Memory

Memory Size: 16 GB

Memory Type: GDDR6

Memory Bus: 256 bit

Bandwidth: 576.0 GB/s

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: 4 MB

L3 Cache: 128 MB

Theoretical Performance

Pixel Rate: ~~295.7 GPixel/s~~
311.7 GPixel/s

Texture Rate: ~~739.2 GTexel/s~~
779.2 GTexel/s

FP16 (half): ~~47.31 TFLOPS~~
49.87 TFLOPS (2:1)

FP32 (float): ~~23.65 TFLOPS~~
24.93 TFLOPS

FP64 (double): ~~1,478 GFLOPS~~
1.558 TFLOPS (1:16)

Board Design

Slot Width: Triple-slot

Length: ~~267 mm~~
320 mm
~~10.5 inches~~
12.6 inches

Width: ~~120 mm~~
135 mm
~~4.7 inches~~
5.3 inches

Height: ~~50 mm~~
62 mm
~~2 inches~~
2.4 inches

TDP: 335 W

Suggested PSU: 700 W

Outputs: 1x HDMI 2.1
2x DisplayPort 1.4a

Power Connectors: ~~2x 8-pin~~
3x 8-pin

Board Number: D412

Graphics Features

DirectX: 12 Ultimate (12_2)

OpenGL: 4.6

OpenCL: 2.1

Vulkan: 1.3

Shader Model: 6.7

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

Other retail boards based on this design (16)

Name	GPU Clock	Boost Clock	Memory Clock	Other Changes
AMD Radeon RX 6950 XT	1860 MHz	2310 MHz	2250 MHz
ASRock RX 6950 XT OC Formula	2143 MHz	2495 MHz	2250 MHz	332 mm/13.1 inches
ASUS TUF RX 6950 XT GAMING OC	1860 MHz	2324 MHz	2250 MHz	320 mm/12.6 inches
ASUS ROG STRIX LC RX 6950 XT GAMING OC	2210 MHz	2565 MHz	2250 MHz	277 mm/10.9 inches, Dual-slot, 1x HDMI 2x DisplayPort 1x USB Type-C
GIGABYTE AORUS RX 6950 XT XTREME WATERFORCE WB	2210 MHz	2565 MHz	2250 MHz	282 mm/11.1 inches, Dual-slot, 2x HDMI 2x DisplayPort
GIGABYTE RX 6950 XT GAMING OC	1860 MHz	2324 MHz	2250 MHz	332 mm/13.1 inches, 2x HDMI 2x DisplayPort
MSI RX 6950 XT GAMING TRIO	1860 MHz	2324 MHz	2250 MHz	325 mm/12.8 inches
MSI RX 6950 XT GAMING X TRIO	1860 MHz	2454 MHz	2250 MHz	325 mm/12.8 inches
PowerColor Liquid Devil RX 6950 XT	1860 MHz	2513 MHz	2250 MHz	266 mm/10.5 inches, Dual-slot
PowerColor Red Devil RX 6950 XT	1860 MHz	2435 MHz	2250 MHz	320 mm/12.6 inches
Sapphire NITRO+ RX 6950 XT	1860 MHz	2324 MHz	2250 MHz	320 mm/12.6 inches
Sapphire NITRO+ RX 6950 XT PURE	2009 MHz	2368 MHz	2250 MHz	320 mm/12.6 inches, Quad-slot
Sapphire TOXIC RX 6950 XT Limited Edition	1860 MHz	2532 MHz	2250 MHz	270 mm/10.6 inches, Dual-slot
VASTARMOR RX 6950 XT ALLOY	2093 MHz	2448 MHz	2250 MHz	345 mm/13.6 inches, 1x HDMI 3x DisplayPort
XFX Speedster MERC 319 RX 6950 XT Black	2009 MHz	2368 MHz	2250 MHz	340 mm/13.4 inches, 1x HDMI 2x DisplayPort 1x USB Type-C
XFX Speedster ZERO WB RX 6950 XT Limited Edition	2210 MHz	2565 MHz	2250 MHz	300 mm/11.8 inches, Dual-slot, 1x HDMI 2x DisplayPort 1x USB Type-C