NVIDIA A40 PCIe vs NVIDIA A800 PCIe 80 GB

VS

AI GPU We compared a Desktop platform GPU: 48GB VRAM A40 PCIe and a GPU: 80GB VRAM A800 PCIe 80 GB to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA A40 PCIe 's Advantages

Boost Clock has increased by 23% (1740MHz vs 1410MHz)

3840 additional rendering cores

NVIDIA A800 PCIe 80 GB 's Advantages

Released 2 years and 1 months late

More VRAM (80GB vs 48GB)

Larger VRAM bandwidth (2039GB/s vs 695.8GB/s)

Lower TDP (250W vs 300W)

Score

Benchmark

FP32 (float)

A40 PCIe +91%

37.42 TFLOPS

A800 PCIe 80 GB

19.49 TFLOPS

A40 PCIe

VS

A800 PCIe 80 GB

Graphics Card

Oct 2020

Release Date

Nov 2022

Tesla

Generation

Ampere

Desktop

Type

AI GPU

PCIe 4.0 x16

Bus Interface

PCIe 4.0 x16

Clock Speeds

1305 MHz

Base Clock

1065 MHz

1740 MHz

Boost Clock

1410 MHz

1812 MHz

Memory Clock

1593 MHz

Memory

48GB

Memory Size

80GB

GDDR6

Memory Type

HBM2e

384bit

Memory Bus

5120bit

695.8GB/s

Bandwidth

2039GB/s

Render Config

84

SM Count

108

-

Compute Units

-

10752

Shading Units

6912

336

TMUs

432

112

ROPs

160

336

Tensor Cores

432

84

RT Cores

-

128 KB (per SM)

L1 Cache

192 KB (per SM)

6 MB

L2 Cache

80 MB

Theoretical Performance

194.9 GPixel/s

Pixel Rate

225.6 GPixel/s

584.6 GTexel/s

Texture Rate

609.1 GTexel/s

37.42 TFLOPS

FP16 (half)

77.97 TFLOPS

37.42 TFLOPS

FP32 (float)

19.49 TFLOPS

584.6 GFLOPS

FP64 (double)

9.746 TFLOPS

Graphics Processor

GA102

GPU Name

GA100

-

GPU Variant

-

Ampere

Architecture

Ampere

Samsung

Foundry

TSMC

8 nm

Process Size

7 nm

28.3 billion

Transistors

54.2 billion

628 mm²

Die Size

826 mm²

Board Design

300W

TDP

250W

700 W

Suggested PSU

600 W

3x DisplayPort 1.4a

Outputs

No outputs

8-pin EPS

Power Connectors

8-pin EPS

Graphics Features

12 Ultimate (12_2)

DirectX

N/A

4.6

OpenGL

N/A

3.0

OpenCL

3.0

1.3

Vulkan

N/A

8.6

CUDA

8.0

6.6

Shader Model

N/A

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