AMD Radeon RX 7900 XTX vs AMD Radeon RX 6800 XT

VS

AMD Radeon RX 7900 XTX

AMD Radeon RX 6800 XT

We compared two Desktop platform GPUs: 24GB VRAM Radeon RX 7900 XTX and 16GB VRAM Radeon RX 6800 XT to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon RX 7900 XTX 's Advantages

Released 2 years and 1 months late

Boost Clock has increased by 11% (2498MHz vs 2250MHz)

More VRAM (24GB vs 16GB)

Larger VRAM bandwidth (960.0GB/s vs 512.0GB/s)

1536 additional rendering cores

AMD Radeon RX 6800 XT 's Advantages

Lower TDP (300W vs 355W)

Score

Benchmark

FP32 (float)

Radeon RX 7900 XTX +195%

61.39 TFLOPS

Radeon RX 6800 XT

20.74 TFLOPS

3DMark Time Spy

Radeon RX 7900 XTX +57%

30621

Radeon RX 6800 XT

19441

Blender

Radeon RX 7900 XTX +76%

4680

Radeon RX 6800 XT

2650

Shadow of the Tomb Raider 2160p

Radeon RX 7900 XTX +76%

127

Radeon RX 6800 XT

72

Shadow of the Tomb Raider 1440p

Radeon RX 7900 XTX +70%

228

Radeon RX 6800 XT

134

Shadow of the Tomb Raider 1080p

Radeon RX 7900 XTX +64%

310

Radeon RX 6800 XT

188

Cyberpunk 2077 2160p

Radeon RX 7900 XTX

60

Radeon RX 6800 XT

60

Cyberpunk 2077 1440p

Radeon RX 7900 XTX +56%

108

Radeon RX 6800 XT

69

Cyberpunk 2077 1080p

Radeon RX 7900 XTX +72%

176

Radeon RX 6800 XT

102

GTA 5 2160p

Radeon RX 7900 XTX +57%

175

Radeon RX 6800 XT

111

GTA 5 1440p

Radeon RX 7900 XTX +26%

175

Radeon RX 6800 XT

138

GTA 5 1080p

Radeon RX 7900 XTX +6%

190

Radeon RX 6800 XT

178

Horizon Forbidden West 1080p

Radeon RX 7900 XTX +34%

144

Radeon RX 6800 XT

107

Horizon Forbidden West 1440p

Radeon RX 7900 XTX +132%

121

Radeon RX 6800 XT

52

Radeon RX 7900 XTX

VS

Radeon RX 6800 XT

Graphics Card

Nov 2022

Release Date

Oct 2020

Navi III

Generation

Navi II

Desktop

Type

Desktop

PCIe 4.0 x16

Bus Interface

PCIe 4.0 x16

Clock Speeds

1929 MHz

Base Clock

1825 MHz

2498 MHz

Boost Clock

2250 MHz

2500 MHz

Memory Clock

2000 MHz

Memory

24GB

Memory Size

16GB

GDDR6

Memory Type

GDDR6

384bit

Memory Bus

256bit

960.0GB/s

Bandwidth

512.0GB/s

Render Config

96

Compute Units

72

-

6144

Shading Units

4608

384

TMUs

288

192

ROPs

128

-

96

RT Cores

72

256 KB per Array

L1 Cache

128 KB per Array

6 MB

L2 Cache

4 MB

96 MB

L3 Cache

128 MB

Theoretical Performance

479.6 GPixel/s

Pixel Rate

288.0 GPixel/s

959.2 GTexel/s

Texture Rate

648.0 GTexel/s

122.8 TFLOPS

FP16 (half)

41.47 TFLOPS

61.39 TFLOPS

FP32 (float)

20.74 TFLOPS

1.918 TFLOPS

FP64 (double)

1296 GFLOPS

Board Design

355W

TDP

300W

750 W

Suggested PSU

700 W

1x HDMI 2.1a 2x DisplayPort 2.1 1x USB Type-C

Outputs

1x HDMI 2.1 2x DisplayPort 1.4a 1x USB Type-C

2x 8-pin

Power Connectors

2x 8-pin

Graphics Processor

Navi 31

GPU Name

Navi 21

Navi 31 XTX (215-145000146)

GPU Variant

Navi 21 XT (215-121000177)

RDNA 3.0

Architecture

RDNA 2.0

TSMC

Foundry

TSMC

5 nm

Process Size

7 nm

57.7 billion

Transistors

26.8 billion

529 mm²

Die Size

520 mm²

Graphics Features

12 Ultimate (12_2)

DirectX

12 Ultimate (12_2)

4.6

OpenGL

4.6

2.2

OpenCL

2.1

1.3

Vulkan

1.3

-

6.7

Shader Model

6.5

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