AMD Radeon RX 7900 XT vs AMD Radeon RX 7800 XT

VS

AMD Radeon RX 7900 XT AMD Radeon RX 7800 XT

We compared two Desktop platform GPUs: 20GB VRAM Radeon RX 7900 XT and 16GB VRAM Radeon RX 7800 XT to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon RX 7900 XT 's Advantages

More VRAM (20GB vs 16GB)

Larger VRAM bandwidth (800.0GB/s vs 624.1GB/s)

1536 additional rendering cores

AMD Radeon RX 7800 XT 's Advantages

Released 9 months late

Boost Clock has increased by 2% (2430MHz vs 2394MHz)

Lower TDP (263W vs 300W)

Score

Benchmark

FP32 (float)

Radeon RX 7900 XT +37%

51.48 TFLOPS

Radeon RX 7800 XT

37.32 TFLOPS

3DMark Time Spy

Radeon RX 7900 XT +33%

26739

Radeon RX 7800 XT

20023

Blender

Radeon RX 7900 XT +57%

4310

Radeon RX 7800 XT

2742

Shadow of the Tomb Raider 2160p

Radeon RX 7900 XT +21%

102

Radeon RX 7800 XT

84

Shadow of the Tomb Raider 1440p

Radeon RX 7900 XT +28%

205

Radeon RX 7800 XT

160

Shadow of the Tomb Raider 1080p

Radeon RX 7900 XT +20%

299

Radeon RX 7800 XT

248

Cyberpunk 2077 2160p

Radeon RX 7900 XT +44%

62

Radeon RX 7800 XT

43

Cyberpunk 2077 1440p

Radeon RX 7900 XT

91

Radeon RX 7800 XT +24%

113

Cyberpunk 2077 1080p

Radeon RX 7900 XT

149

Radeon RX 7800 XT +12%

167

GTA 5 2160p

Radeon RX 7900 XT +21%

170

Radeon RX 7800 XT

140

GTA 5 1440p

Radeon RX 7900 XT +21%

170

Radeon RX 7800 XT

140

GTA 5 1080p

Radeon RX 7900 XT

190

Radeon RX 7800 XT

190

Horizon Forbidden West 1080p

Radeon RX 7900 XT +33%

131

Radeon RX 7800 XT

98

Horizon Forbidden West 1440p

Radeon RX 7900 XT +29%

105

Radeon RX 7800 XT

81

Horizon Forbidden West 2160p

Radeon RX 7900 XT +30%

68

Radeon RX 7800 XT

52

Radeon RX 7900 XT

VS

Radeon RX 7800 XT

Graphics Card

Nov 2022

Release Date

Aug 2023

Navi III

Generation

Navi III

Desktop

Type

Desktop

PCIe 4.0 x16

Bus Interface

PCIe 4.0 x16

Clock Speeds

1387 MHz

Base Clock

1295 MHz

2394 MHz

Boost Clock

2430 MHz

2500 MHz

Memory Clock

2438 MHz

Memory

20GB

Memory Size

16GB

GDDR6

Memory Type

GDDR6

320bit

Memory Bus

256bit

800.0GB/s

Bandwidth

624.1GB/s

Render Config

-

SM Count

-

84

Compute Units

60

5376

Shading Units

3840

336

TMUs

240

192

ROPs

96

-

Tensor Cores

-

84

RT Cores

60

256 KB per Array

L1 Cache

128 KB per Array

6 MB

L2 Cache

4 MB

Theoretical Performance

459.6 GPixel/s

Pixel Rate

233.3 GPixel/s

804.4 GTexel/s

Texture Rate

583.2 GTexel/s

103.0 TFLOPS

FP16 (half)

74.65 TFLOPS

51.48 TFLOPS

FP32 (float)

37.32 TFLOPS

1.609 TFLOPS

FP64 (double)

1166 GFLOPS

Graphics Processor

Navi 31

GPU Name

Navi 32

Navi 31 XT (215-145000156)

GPU Variant

Navi 32 XT (215-180000006)

RDNA 3.0

Architecture

RDNA 3.0

TSMC

Foundry

TSMC

5 nm

Process Size

5 nm

57.7 billion

Transistors

28.1 billion

529 mm²

Die Size

346 mm²

Board Design

300W

TDP

263W

700 W

Suggested PSU

600 W

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

Outputs

1x HDMI 2.1a 3x DisplayPort 2.1

2x 8-pin

Power Connectors

2x 8-pin

Graphics Features

12 Ultimate (12_2)

DirectX

12 Ultimate (12_2)

4.6

OpenGL

4.6

2.2

OpenCL

2.2

1.3

Vulkan

1.3

-

CUDA

-

6.7

Shader Model

6.7

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