NVIDIA H800 SXM5 vs NVIDIA A800 SXM4 80 GB

VS

NVIDIA H800 SXM5

NVIDIA A800 SXM4 80 GB

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

Main Differences

NVIDIA H800 SXM5 's Advantages

Released 7 months late

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

9984 additional rendering cores

NVIDIA A800 SXM4 80 GB 's Advantages

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

Lower TDP (400W vs 700W)

Score

Benchmark

FP32 (float)

H800 SXM5 +204%

59.3 TFLOPS

A800 SXM4 80 GB

19.49 TFLOPS

H800 SXM5

VS

A800 SXM4 80 GB

Graphics Card

Mar 2023

Release Date

Aug 2022

Tesla Hopper

Generation

Ampere

AI GPU

Type

AI GPU

PCIe 5.0 x16

Bus Interface

PCIe 4.0 x16

Clock Speeds

1095 MHz

Base Clock

1155 MHz

1755 MHz

Boost Clock

1410 MHz

1313 MHz

Memory Clock

1593 MHz

Memory

80GB

Memory Size

80GB

HBM3

Memory Type

HBM2e

5120bit

Memory Bus

5120bit

1681GB/s

Bandwidth

2039GB/s

Render Config

-

132

SM Count

108

16896

Shading Units

6912

528

TMUs

432

24

ROPs

160

528

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

926.6 GTexel/s

Texture Rate

609.1 GTexel/s

237.2 TFLOPS

FP16 (half)

77.97 TFLOPS

59.30 TFLOPS

FP32 (float)

19.49 TFLOPS

29.65 TFLOPS

FP64 (double)

9.746 TFLOPS

Board Design

700W

TDP

400W

1100 W

Suggested PSU

800 W

No outputs

Outputs

No outputs

8-pin EPS

Power Connectors

None

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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