NVIDIA A40 PCIe vs AMD Radeon RX 6600 XT

VS

NVIDIA A40 PCIe

AMD Radeon RX 6600 XT

We compared two Desktop platform GPUs: 48GB VRAM A40 PCIe and 8GB VRAM Radeon RX 6600 XT to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA A40 PCIe 's Advantages

More VRAM (48GB vs 8GB)

Larger VRAM bandwidth (695.8GB/s vs 256.0GB/s)

8704 additional rendering cores

AMD Radeon RX 6600 XT 's Advantages

Released 9 months late

Boost Clock has increased by 49% (2589MHz vs 1740MHz)

Lower TDP (160W vs 300W)

Score

Benchmark

FP32 (float)

A40 PCIe +253%

37.42 TFLOPS

Radeon RX 6600 XT

10.6 TFLOPS

Blender

A40 PCIe +248%

4170

Radeon RX 6600 XT

1196

A40 PCIe

VS

Radeon RX 6600 XT

Graphics Card

Oct 2020

Release Date

Jul 2021

Tesla

Generation

Navi II

Desktop

Type

Desktop

PCIe 4.0 x16

Bus Interface

PCIe 4.0 x8

Clock Speeds

1305 MHz

Base Clock

1968 MHz

1740 MHz

Boost Clock

2589 MHz

1812 MHz

Memory Clock

2000 MHz

Memory

48GB

Memory Size

8GB

GDDR6

Memory Type

GDDR6

384bit

Memory Bus

128bit

695.8GB/s

Bandwidth

256.0GB/s

Render Config

-

Compute Units

32

84

SM Count

-

10752

Shading Units

2048

336

TMUs

128

112

ROPs

64

336

Tensor Cores

-

84

RT Cores

32

128 KB (per SM)

L1 Cache

128 KB per Array

6 MB

L2 Cache

2 MB

-

L3 Cache

32 MB

Theoretical Performance

194.9 GPixel/s

Pixel Rate

165.7 GPixel/s

584.6 GTexel/s

Texture Rate

331.4 GTexel/s

37.42 TFLOPS

FP16 (half)

21.21 TFLOPS

37.42 TFLOPS

FP32 (float)

10.60 TFLOPS

584.6 GFLOPS

FP64 (double)

662.8 GFLOPS

Board Design

300W

TDP

160W

700 W

Suggested PSU

450 W

3x DisplayPort 1.4a

Outputs

1x HDMI 2.1 3x DisplayPort 1.4a

8-pin EPS

Power Connectors

1x 8-pin

Graphics Processor

GA102

GPU Name

Navi 23

-

GPU Variant

Navi 23 XT (215-130000006)

Ampere

Architecture

RDNA 2.0

Samsung

Foundry

TSMC

8 nm

Process Size

7 nm

28.3 billion

Transistors

11.06 billion

628 mm²

Die Size

237 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

8.6

CUDA

-

6.6

Shader Model

6.7

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