AMD Radeon RX 6600 vs NVIDIA RTX A4000H

VS

We compared two Desktop platform GPUs: 8GB VRAM Radeon RX 6600 and 16GB VRAM RTX A4000H to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon RX 6600 's Advantages

Released 6 months late

Boost Clock has increased by 60% (2491MHz vs 1560MHz)

Lower TDP (132W vs 140W)

NVIDIA RTX A4000H 's Advantages

More VRAM (16GB vs 8GB)

Larger VRAM bandwidth (448.0GB/s vs 224.0GB/s)

4352 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon RX 6600

8.928 TFLOPS

RTX A4000H +114%

19.17 TFLOPS

Radeon RX 6600

VS

RTX A4000H

Graphics Card

Oct 2021

Release Date

Apr 2021

Navi II

Generation

Quadro Ampere

Desktop

Type

Desktop

PCIe 4.0 x8

Bus Interface

PCIe 4.0 x16

Clock Speeds

1626 MHz

Base Clock

735 MHz

2491 MHz

Boost Clock

1560 MHz

1750 MHz

Memory Clock

1750 MHz

Memory

8GB

Memory Size

16GB

GDDR6

Memory Type

GDDR6

128bit

Memory Bus

256bit

224.0GB/s

Bandwidth

448.0GB/s

Render Config

-

SM Count

48

28

Compute Units

-

1792

Shading Units

6144

112

TMUs

192

64

ROPs

96

-

Tensor Cores

192

28

RT Cores

48

128 KB per Array

L1 Cache

128 KB (per SM)

2 MB

L2 Cache

4 MB

Theoretical Performance

159.4 GPixel/s

Pixel Rate

149.8 GPixel/s

279.0 GTexel/s

Texture Rate

299.5 GTexel/s

17.86 TFLOPS

FP16 (half)

19.17 TFLOPS

8.928 TFLOPS

FP32 (float)

19.17 TFLOPS

558.0 GFLOPS

FP64 (double)

299.5 GFLOPS

Graphics Processor

Navi 23

GPU Name

GA104

Navi 23 XL (215-130000016)

GPU Variant

GA104-???-A1

RDNA 2.0

Architecture

Ampere

TSMC

Foundry

Samsung

7 nm

Process Size

8 nm

11.06 billion

Transistors

17.4 billion

237 mm²

Die Size

392 mm²

Board Design

132W

TDP

140W

300 W

Suggested PSU

300 W

1x HDMI 2.1 3x DisplayPort 1.4a

Outputs

4x DisplayPort 1.4a

1x 8-pin

Power Connectors

1x 6-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

8.6

6.5

Shader Model

6.7

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