AMD Radeon RX 6900 XT vs NVIDIA A40 PCIe

VS

AMD Radeon RX 6900 XT

NVIDIA A40 PCIe

We compared two Desktop platform GPUs: 16GB VRAM Radeon RX 6900 XT and 48GB VRAM A40 PCIe to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon RX 6900 XT 's Advantages

Boost Clock has increased by 29% (2250MHz vs 1740MHz)

NVIDIA A40 PCIe 's Advantages

More VRAM (48GB vs 16GB)

Larger VRAM bandwidth (695.8GB/s vs 512.0GB/s)

5632 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon RX 6900 XT

23.04 TFLOPS

A40 PCIe +62%

37.42 TFLOPS

Blender

Radeon RX 6900 XT

2948

A40 PCIe +41%

4170

Radeon RX 6900 XT

VS

A40 PCIe

Graphics Card

Oct 2020

Release Date

Oct 2020

Navi II

Generation

Tesla

Desktop

Type

Desktop

PCIe 4.0 x16

Bus Interface

PCIe 4.0 x16

Clock Speeds

1825 MHz

Base Clock

1305 MHz

2250 MHz

Boost Clock

1740 MHz

2000 MHz

Memory Clock

1812 MHz

Memory

16GB

Memory Size

48GB

GDDR6

Memory Type

GDDR6

256bit

Memory Bus

384bit

512.0GB/s

Bandwidth

695.8GB/s

Render Config

80

Compute Units

-

SM Count

84

5120

Shading Units

10752

320

TMUs

336

128

ROPs

112

-

Tensor Cores

336

80

RT Cores

84

128 KB per Array

L1 Cache

128 KB (per SM)

4 MB

L2 Cache

6 MB

128 MB

L3 Cache

-

Theoretical Performance

288.0 GPixel/s

Pixel Rate

194.9 GPixel/s

720.0 GTexel/s

Texture Rate

584.6 GTexel/s

46.08 TFLOPS

FP16 (half)

37.42 TFLOPS

23.04 TFLOPS

FP32 (float)

37.42 TFLOPS

1440 GFLOPS

FP64 (double)

584.6 GFLOPS

Board Design

300W

TDP

300W

700 W

Suggested PSU

700 W

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

Outputs

3x DisplayPort 1.4a

2x 8-pin

Power Connectors

8-pin EPS

Graphics Processor

Navi 21

GPU Name

GA102

Navi 21 XTX (215-121000167)

GPU Variant

-

RDNA 2.0

Architecture

Ampere

TSMC

Foundry

Samsung

7 nm

Process Size

8 nm

26.8 billion

Transistors

28.3 billion

520 mm²

Die Size

628 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

6.6

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