NVIDIA A800 SXM4 80 GB vs NVIDIA H800 SXM5

VS

NVIDIA A800 SXM4 80 GB

NVIDIA H800 SXM5

AI GPUAI GPU We compared two GPUs: 80GB VRAM A800 SXM4 80 GB and 80GB VRAM H800 SXM5 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA A800 SXM4 80 GB 's Advantages

Larger VRAM bandwidth (2039GB/s vs 1681GB/s)

Lower TDP (400W vs 700W)

NVIDIA H800 SXM5 's Advantages

Released 7 months late

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

9984 additional rendering cores

Score

Benchmark

FP32 (float)

A800 SXM4 80 GB

19.49 TFLOPS

H800 SXM5 +204%

59.3 TFLOPS

A800 SXM4 80 GB

VS

H800 SXM5

Graphics Card

Aug 2022

Release Date

Mar 2023

Ampere

Generation

Tesla Hopper

AI GPU

Type

AI GPU

PCIe 4.0 x16

Bus Interface

PCIe 5.0 x16

Clock Speeds

1155 MHz

Base Clock

1095 MHz

1410 MHz

Boost Clock

1755 MHz

1593 MHz

Memory Clock

1313 MHz

Memory

80GB

Memory Size

80GB

HBM2e

Memory Type

HBM3

5120bit

Memory Bus

5120bit

2039GB/s

Bandwidth

1681GB/s

Render Config

-

108

SM Count

132

6912

Shading Units

16896

432

TMUs

528

160

ROPs

24

432

Tensor Cores

528

-

192 KB (per SM)

L1 Cache

256 KB (per SM)

40 MB

L2 Cache

50 MB

-

Theoretical Performance

225.6 GPixel/s

Pixel Rate

42.12 GPixel/s

609.1 GTexel/s

Texture Rate

926.6 GTexel/s

77.97 TFLOPS

FP16 (half)

237.2 TFLOPS

19.49 TFLOPS

FP32 (float)

59.30 TFLOPS

9.746 TFLOPS

FP64 (double)

29.65 TFLOPS

Board Design

400W

TDP

700W

800 W

Suggested PSU

1100 W

No outputs

Outputs

No outputs

None

Power Connectors

8-pin EPS

Graphics Processor

GA100

GPU Name

GH100

-

Ampere

Architecture

Hopper

TSMC

Foundry

TSMC

7 nm

Process Size

4 nm

54.2 billion

Transistors

80 billion

826 mm²

Die Size

814 mm²

Graphics Features

N/A

DirectX

N/A

OpenGL

N/A

3.0

OpenCL

3.0

N/A

Vulkan

N/A

8.0

CUDA

9.0

N/A

Shader Model

N/A

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