AMD Radeon RX 6600 vs NVIDIA RTX A400

VS

AMD Radeon RX 6600

NVIDIA RTX A400

We compared two Desktop platform GPUs: 8GB VRAM Radeon RX 6600 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 6600 's Advantages

Boost Clock has increased by 41% (2491MHz vs 1762MHz)

More VRAM (8GB vs 4GB)

Larger VRAM bandwidth (224.0GB/s vs 96.00GB/s)

1024 additional rendering cores

NVIDIA RTX A400 's Advantages

Released 2 years and 6 months late

Lower TDP (50W vs 132W)

Score

Benchmark

FP32 (float)

Radeon RX 6600 +229%

8.928 TFLOPS

RTX A400

2.706 TFLOPS

Radeon RX 6600

VS

RTX A400

Graphics Card

Oct 2021

Release Date

Apr 2024

Navi II

Generation

Quadro Ampere(Ax000)

Desktop

Type

Desktop

PCIe 4.0 x8

Bus Interface

PCIe 4.0 x8

Clock Speeds

1626 MHz

Base Clock

1417 MHz

2491 MHz

Boost Clock

1762 MHz

1750 MHz

Memory Clock

1500 MHz

Memory

8GB

Memory Size

4GB

GDDR6

Memory Type

GDDR6

128bit

Memory Bus

64bit

224.0GB/s

Bandwidth

96.00GB/s

Render Config

28

Compute Units

-

SM Count

6

1792

Shading Units

768

112

TMUs

24

64

ROPs

16

-

Tensor Cores

24

28

RT Cores

6

128 KB per Array

L1 Cache

128 KB (per SM)

2 MB

L2 Cache

2 MB

32 MB

L3 Cache

-

Theoretical Performance

159.4 GPixel/s

Pixel Rate

28.19 GPixel/s

279.0 GTexel/s

Texture Rate

42.29 GTexel/s

17.86 TFLOPS

FP16 (half)

2.706 TFLOPS

8.928 TFLOPS

FP32 (float)

2.706 TFLOPS

558.0 GFLOPS

FP64 (double)

42.29 GFLOPS

Board Design

132W

TDP

50W

300 W

Suggested PSU

250 W

1x HDMI 2.1 3x DisplayPort 1.4a

Outputs

4x mini-DisplayPort 1.4a

1x 8-pin

Power Connectors

None

Graphics Processor

Navi 23

GPU Name

GA107

Navi 23 XL (215-130000016)

GPU Variant

-

RDNA 2.0

Architecture

Ampere

TSMC

Foundry

Samsung

7 nm

Process Size

8 nm

11.06 billion

Transistors

8.7 billion

237 mm²

Die Size

200 mm²

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

6.8

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