NVIDIA A40 PCIe vs NVIDIA GeForce RTX 4090

VS

We compared two Desktop platform GPUs: 48GB VRAM A40 PCIe and 24GB VRAM GeForce RTX 4090 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 24GB)

Lower TDP (300W vs 450W)

NVIDIA GeForce RTX 4090 's Advantages

Released 1 years and 11 months late

Boost Clock has increased by 45% (2520MHz vs 1740MHz)

Larger VRAM bandwidth (1008GB/s vs 695.8GB/s)

5632 additional rendering cores

Score

Benchmark

FP32 (float)

A40 PCIe

37.42 TFLOPS

GeForce RTX 4090 +120%

82.58 TFLOPS

Blender

A40 PCIe

4170

GeForce RTX 4090 +209%

12921

A40 PCIe

VS

GeForce RTX 4090

Graphics Card

Oct 2020

Release Date

Sep 2022

Tesla

Generation

GeForce 40

Desktop

Type

Desktop

PCIe 4.0 x16

Bus Interface

PCIe 4.0 x16

Clock Speeds

1305 MHz

Base Clock

2235 MHz

1740 MHz

Boost Clock

2520 MHz

1812 MHz

Memory Clock

1313 MHz

Memory

48GB

Memory Size

24GB

GDDR6

Memory Type

GDDR6X

384bit

Memory Bus

384bit

695.8GB/s

Bandwidth

1008GB/s

Render Config

84

SM Count

128

-

Compute Units

-

10752

Shading Units

16384

336

TMUs

512

112

ROPs

176

336

Tensor Cores

512

84

RT Cores

128

128 KB (per SM)

L1 Cache

128 KB (per SM)

6 MB

L2 Cache

72 MB

Theoretical Performance

194.9 GPixel/s

Pixel Rate

443.5 GPixel/s

584.6 GTexel/s

Texture Rate

1290 GTexel/s

37.42 TFLOPS

FP16 (half)

82.58 TFLOPS

37.42 TFLOPS

FP32 (float)

82.58 TFLOPS

584.6 GFLOPS

FP64 (double)

1290 GFLOPS

Graphics Processor

GA102

GPU Name

AD102

-

GPU Variant

AD102-300-A1

Ampere

Architecture

Ada Lovelace

Samsung

Foundry

TSMC

8 nm

Process Size

5 nm

28.3 billion

Transistors

76.3 billion

628 mm²

Die Size

609 mm²

Board Design

300W

TDP

450W

700 W

Suggested PSU

850 W

3x DisplayPort 1.4a

Outputs

1x HDMI 2.1 3x DisplayPort 1.4a

8-pin EPS

Power Connectors

1x 16-pin

Graphics Features

12 Ultimate (12_2)

DirectX

12 Ultimate (12_2)

4.6

OpenGL

4.6

3.0

OpenCL

3.0

1.3

Vulkan

1.3

8.6

CUDA

8.9

6.6

Shader Model

6.7

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