AMD Radeon RX 6900 XT vs NVIDIA GeForce RTX 4090 D

VS

AMD Radeon RX 6900 XT NVIDIA GeForce RTX 4090 D

We compared two Desktop platform GPUs: 16GB VRAM Radeon RX 6900 XT and 24GB VRAM GeForce RTX 4090 D to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon RX 6900 XT 's Advantages

Lower TDP (300W vs 425W)

NVIDIA GeForce RTX 4090 D 's Advantages

Released 3 years and 2 months late

Boost Clock has increased by 12% (2520MHz vs 2250MHz)

More VRAM (24GB vs 16GB)

Larger VRAM bandwidth (1008GB/s vs 512.0GB/s)

9472 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon RX 6900 XT

23.04 TFLOPS

GeForce RTX 4090 D +219%

73.54 TFLOPS

3DMark Time Spy

Radeon RX 6900 XT

20915

GeForce RTX 4090 D +63%

34288

Radeon RX 6900 XT

VS

GeForce RTX 4090 D

Graphics Card

Oct 2020

Release Date

Dec 2023

Navi II

Generation

GeForce 40

Desktop

Type

Desktop

PCIe 4.0 x16

Bus Interface

PCIe 4.0 x16

Clock Speeds

1825 MHz

Base Clock

2280 MHz

2250 MHz

Boost Clock

2520 MHz

2000 MHz

Memory Clock

1313 MHz

Memory

16GB

Memory Size

24GB

GDDR6

Memory Type

GDDR6X

256bit

Memory Bus

384bit

512.0GB/s

Bandwidth

1008GB/s

Render Config

-

SM Count

114

80

Compute Units

-

5120

Shading Units

14592

320

TMUs

456

128

ROPs

176

-

Tensor Cores

456

80

RT Cores

114

128 KB per Array

L1 Cache

128 KB (per SM)

4 MB

L2 Cache

72 MB

Theoretical Performance

288.0 GPixel/s

Pixel Rate

443.5 GPixel/s

720.0 GTexel/s

Texture Rate

1149 GTexel/s

46.08 TFLOPS

FP16 (half)

73.54 TFLOPS

23.04 TFLOPS

FP32 (float)

73.54 TFLOPS

1440 GFLOPS

FP64 (double)

1149 GFLOPS

Graphics Processor

Navi 21

GPU Name

AD102

Navi 21 XTX (215-121000167)

GPU Variant

AD102-250-A1

RDNA 2.0

Architecture

Ada Lovelace

TSMC

Foundry

TSMC

7 nm

Process Size

5 nm

26.8 billion

Transistors

76.3 billion

520 mm²

Die Size

609 mm²

Board Design

300W

TDP

425W

700 W

Suggested PSU

800 W

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

Outputs

1x HDMI 2.1 3x DisplayPort 1.4a

2x 8-pin

Power Connectors

1x 16-pin

Graphics Features

12 Ultimate (12_2)

DirectX

12 Ultimate (12_2)

4.6

OpenGL

4.6

2.1

OpenCL

3.0

1.3

Vulkan

1.3

-

CUDA

8.9

6.5

Shader Model

6.7

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