NVIDIA GeForce RTX 4090D vs AMD Radeon RX 6800 XT

VS

NVIDIA GeForce RTX 4090D

AMD Radeon RX 6800 XT

We compared two Desktop platform GPUs: 24GB VRAM GeForce RTX 4090D and 16GB VRAM Radeon RX 6800 XT to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce RTX 4090D '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)

9984 additional rendering cores

AMD Radeon RX 6800 XT 's Advantages

Lower TDP (300W vs 425W)

Score

Benchmark

FP32 (float)

GeForce RTX 4090D +254%

73.54 TFLOPS

Radeon RX 6800 XT

20.74 TFLOPS

GeForce RTX 4090D

VS

Radeon RX 6800 XT

Graphics Card

Dec 2023

Release Date

Oct 2020

GeForce 40

Generation

Navi II

Desktop

Type

Desktop

PCIe 4.0 x16

Bus Interface

PCIe 4.0 x16

Clock Speeds

2280 MHz

Base Clock

1825 MHz

2520 MHz

Boost Clock

2250 MHz

1313 MHz

Memory Clock

2000 MHz

Memory

24GB

Memory Size

16GB

GDDR6X

Memory Type

GDDR6

384bit

Memory Bus

256bit

1008GB/s

Bandwidth

512.0GB/s

Render Config

-

Compute Units

72

114

SM Count

-

14592

Shading Units

4608

456

TMUs

288

176

ROPs

128

456

Tensor Cores

-

114

RT Cores

72

128 KB (per SM)

L1 Cache

128 KB per Array

72 MB

L2 Cache

4 MB

-

L3 Cache

128 MB

Theoretical Performance

443.5 GPixel/s

Pixel Rate

288.0 GPixel/s

1149 GTexel/s

Texture Rate

648.0 GTexel/s

73.54 TFLOPS

FP16 (half)

41.47 TFLOPS

73.54 TFLOPS

FP32 (float)

20.74 TFLOPS

1149 GFLOPS

FP64 (double)

1296 GFLOPS

Board Design

425W

TDP

300W

800 W

Suggested PSU

700 W

1x HDMI 2.1 3x DisplayPort 1.4a

Outputs

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

1x 16-pin

Power Connectors

2x 8-pin

Graphics Processor

AD102

GPU Name

Navi 21

AD102-250-A1

GPU Variant

Navi 21 XT (215-121000177)

Ada Lovelace

Architecture

RDNA 2.0

TSMC

Foundry

TSMC

5 nm

Process Size

7 nm

76.3 billion

Transistors

26.8 billion

609 mm²

Die Size

520 mm²

Graphics Features

12 Ultimate (12_2)

DirectX

12 Ultimate (12_2)

4.6

OpenGL

4.6

3.0

OpenCL

2.1

1.3

Vulkan

1.3

8.9

CUDA

-

6.7

Shader Model

6.5

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