AMD Radeon RX 6800 vs NVIDIA RTX A400

VS

We compared two Desktop platform GPUs: 16GB VRAM Radeon RX 6800 and 4GB VRAM RTX A400 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon RX 6800 's Advantages

Boost Clock has increased by 19% (2105MHz vs 1762MHz)

More VRAM (16GB vs 4GB)

Larger VRAM bandwidth (512.0GB/s vs 96.00GB/s)

3072 additional rendering cores

NVIDIA RTX A400 's Advantages

Released 3 years and 6 months late

Lower TDP (50W vs 250W)

Score

Benchmark

FP32 (float)

Radeon RX 6800 +497%

16.17 TFLOPS

RTX A400

2.706 TFLOPS

Radeon RX 6800

VS

RTX A400

Graphics Card

Oct 2020

Release Date

Apr 2024

Navi II

Generation

Quadro Ampere

Desktop

Type

Desktop

PCIe 4.0 x16

Bus Interface

PCIe 4.0 x8

Clock Speeds

1700 MHz

Base Clock

727 MHz

2105 MHz

Boost Clock

1762 MHz

2000 MHz

Memory Clock

1500 MHz

Memory

16GB

Memory Size

4GB

GDDR6

Memory Type

GDDR6

256bit

Memory Bus

64bit

512.0GB/s

Bandwidth

96.00GB/s

Render Config

-

SM Count

6

60

Compute Units

-

3840

Shading Units

768

240

TMUs

24

96

ROPs

16

-

Tensor Cores

24

60

RT Cores

6

128 KB per Array

L1 Cache

128 KB (per SM)

4 MB

L2 Cache

2 MB

Theoretical Performance

202.1 GPixel/s

Pixel Rate

28.19 GPixel/s

505.2 GTexel/s

Texture Rate

42.29 GTexel/s

32.33 TFLOPS

FP16 (half)

2.706 TFLOPS

16.17 TFLOPS

FP32 (float)

2.706 TFLOPS

1010 GFLOPS

FP64 (double)

42.29 GFLOPS

Graphics Processor

Navi 21

GPU Name

GA107

Navi 21 XL (215-121000187)

GPU Variant

-

RDNA 2.0

Architecture

Ampere

TSMC

Foundry

Samsung

7 nm

Process Size

8 nm

26.8 billion

Transistors

8.7 billion

520 mm²

Die Size

200 mm²

Board Design

250W

TDP

50W

600 W

Suggested PSU

250 W

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

Outputs

4x mini-DisplayPort 1.4a

2x 8-pin

Power Connectors

None

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

8.6

6.5

Shader Model

6.7

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