AMD Radeon RX 7900 XT vs AMD Radeon RX 6900 XTX

VS

AMD Radeon RX 7900 XT AMD Radeon RX 6900 XTX

We compared two Desktop platform GPUs: 20GB VRAM Radeon RX 7900 XT and 16GB VRAM Radeon RX 6900 XTX 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 576.0GB/s)

256 additional rendering cores

Lower TDP (300W vs 330W)

AMD Radeon RX 6900 XTX 's Advantages

Boost Clock has increased by 2% (2435MHz vs 2394MHz)

Score

Benchmark

FP32 (float)

Radeon RX 7900 XT +106%

51.48 TFLOPS

Radeon RX 6900 XTX

24.93 TFLOPS

Radeon RX 7900 XT

VS

Radeon RX 6900 XTX

Graphics Card

Nov 2022

Release Date

Unknown

Navi III

Generation

Navi II

Desktop

Type

Desktop

PCIe 4.0 x16

Bus Interface

PCIe 4.0 x16

Clock Speeds

1387 MHz

Base Clock

2075 MHz

2394 MHz

Boost Clock

2435 MHz

2500 MHz

Memory Clock

2250 MHz

Memory

20GB

Memory Size

16GB

GDDR6

Memory Type

GDDR6

320bit

Memory Bus

256bit

800.0GB/s

Bandwidth

576.0GB/s

Render Config

-

SM Count

-

84

Compute Units

80

5376

Shading Units

5120

336

TMUs

320

192

ROPs

128

-

Tensor Cores

-

84

RT Cores

80

256 KB per Array

L1 Cache

128 KB per Array

6 MB

L2 Cache

4 MB

Theoretical Performance

459.6 GPixel/s

Pixel Rate

311.7 GPixel/s

804.4 GTexel/s

Texture Rate

779.2 GTexel/s

103.0 TFLOPS

FP16 (half)

49.87 TFLOPS

51.48 TFLOPS

FP32 (float)

24.93 TFLOPS

1.609 TFLOPS

FP64 (double)

1.558 TFLOPS

Graphics Processor

Navi 31

GPU Name

Navi 21

Navi 31 XT (215-145000156)

GPU Variant

Navi 21 XTXH (215-121000247)

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

Board Design

300W

TDP

330W

700 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 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

-

CUDA

-

6.7

Shader Model

6.5

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