NVIDIA GeForce RTX 4090 vs NVIDIA A40 PCIe

VS

We compared two Desktop platform GPUs: 24GB VRAM GeForce RTX 4090 and 48GB VRAM A40 PCIe to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

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

NVIDIA A40 PCIe 's Advantages

More VRAM (48GB vs 24GB)

Lower TDP (300W vs 450W)

Score

Benchmark

FP32 (float)

GeForce RTX 4090 +120%

82.58 TFLOPS

A40 PCIe

37.42 TFLOPS

Blender

GeForce RTX 4090 +209%

12921

A40 PCIe

4170

GeForce RTX 4090

VS

A40 PCIe

Graphics Card

Sep 2022

Release Date

Oct 2020

GeForce 40

Generation

Tesla

Desktop

Type

Desktop

PCIe 4.0 x16

Bus Interface

PCIe 4.0 x16

Clock Speeds

2235 MHz

Base Clock

1305 MHz

2520 MHz

Boost Clock

1740 MHz

1313 MHz

Memory Clock

1812 MHz

Memory

24GB

Memory Size

48GB

GDDR6X

Memory Type

GDDR6

384bit

Memory Bus

384bit

1008GB/s

Bandwidth

695.8GB/s

Render Config

128

SM Count

84

-

Compute Units

-

16384

Shading Units

10752

512

TMUs

336

176

ROPs

112

512

Tensor Cores

336

128

RT Cores

84

128 KB (per SM)

L1 Cache

128 KB (per SM)

72 MB

L2 Cache

6 MB

Theoretical Performance

443.5 GPixel/s

Pixel Rate

194.9 GPixel/s

1290 GTexel/s

Texture Rate

584.6 GTexel/s

82.58 TFLOPS

FP16 (half)

37.42 TFLOPS

82.58 TFLOPS

FP32 (float)

37.42 TFLOPS

1290 GFLOPS

FP64 (double)

584.6 GFLOPS

Graphics Processor

AD102

GPU Name

GA102

AD102-300-A1

GPU Variant

-

Ada Lovelace

Architecture

Ampere

TSMC

Foundry

Samsung

5 nm

Process Size

8 nm

76.3 billion

Transistors

28.3 billion

609 mm²

Die Size

628 mm²

Board Design

450W

TDP

300W

850 W

Suggested PSU

700 W

1x HDMI 2.1 3x DisplayPort 1.4a

Outputs

3x DisplayPort 1.4a

1x 16-pin

Power Connectors

8-pin EPS

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

8.9

CUDA

8.6

6.7

Shader Model

6.6

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