NVIDIA H800 PCIe 80 GB vs NVIDIA A100 PCIe

VS

NVIDIA H800 PCIe 80 GB

NVIDIA A100 PCIe

AI GPUAI GPU We compared two GPUs: 80GB VRAM H800 PCIe 80 GB and 40GB VRAM A100 PCIe to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA H800 PCIe 80 GB 's Advantages

Released 2 years and 9 months late

Boost Clock has increased by 24% (1755MHz vs 1410MHz)

More VRAM (80GB vs 40GB)

Larger VRAM bandwidth (2039GB/s vs 1555GB/s)

7680 additional rendering cores

NVIDIA A100 PCIe 's Advantages

Lower TDP (250W vs 350W)

Score

Benchmark

FP32 (float)

H800 PCIe 80 GB +162%

51.22 TFLOPS

A100 PCIe

19.49 TFLOPS

H800 PCIe 80 GB

VS

A100 PCIe

Graphics Card

Mar 2023

Release Date

Jun 2020

Tesla Hopper

Generation

Tesla

AI GPU

Type

AI GPU

PCIe 5.0 x16

Bus Interface

PCIe 4.0 x16

Clock Speeds

1095 MHz

Base Clock

765 MHz

1755 MHz

Boost Clock

1410 MHz

1593 MHz

Memory Clock

1215 MHz

Memory

80GB

Memory Size

40GB

HBM2e

Memory Type

HBM2e

5120bit

Memory Bus

5120bit

2039GB/s

Bandwidth

1555GB/s

Render Config

-

114

SM Count

108

14592

Shading Units

6912

456

TMUs

432

24

ROPs

160

456

Tensor Cores

432

-

256 KB (per SM)

L1 Cache

192 KB (per SM)

50 MB

L2 Cache

40 MB

-

Theoretical Performance

42.12 GPixel/s

Pixel Rate

225.6 GPixel/s

800.3 GTexel/s

Texture Rate

609.1 GTexel/s

204.9 TFLOPS

FP16 (half)

77.97 TFLOPS

51.22 TFLOPS

FP32 (float)

19.49 TFLOPS

25.61 TFLOPS

FP64 (double)

9.746 TFLOPS

Board Design

350W

TDP

250W

750 W

Suggested PSU

600 W

No outputs

Outputs

No outputs

1x 16-pin

Power Connectors

8-pin EPS

Graphics Processor

GH100

GPU Name

GA100

-

Hopper

Architecture

Ampere

TSMC

Foundry

TSMC

4 nm

Process Size

7 nm

80 billion

Transistors

54.2 billion

814 mm²

Die Size

826 mm²

Graphics Features

N/A

DirectX

N/A

OpenGL

N/A

3.0

OpenCL

3.0

N/A

Vulkan

N/A

9.0

CUDA

8.0

N/A

Shader Model

N/A

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