NVIDIA H100 SXM5 64 GB vs NVIDIA H100 CNX

VS

AI GPUAI GPU We compared two GPUs: 64GB VRAM H100 SXM5 64 GB and 80GB VRAM H100 CNX to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA H100 SXM5 64 GB 's Advantages

Boost Clock has increased by 7% (1980MHz vs 1845MHz)

2304 additional rendering cores

NVIDIA H100 CNX 's Advantages

More VRAM (80GB vs 64GB)

Larger VRAM bandwidth (2039GB/s vs 1008GB/s)

Lower TDP (350W vs 700W)

Score

Benchmark

FP32 (float)

H100 SXM5 64 GB +24%

66.91 TFLOPS

H100 CNX

53.84 TFLOPS

H100 SXM5 64 GB

VS

H100 CNX

Graphics Card

Mar 2023

Release Date

Mar 2023

Tesla Hopper

Generation

Tesla Hopper

AI GPU

Type

AI GPU

PCIe 5.0 x16

Bus Interface

PCIe 5.0 x16

Clock Speeds

1665 MHz

Base Clock

690 MHz

1980 MHz

Boost Clock

1845 MHz

1313 MHz

Memory Clock

1593 MHz

Memory

64GB

Memory Size

80GB

HBM3

Memory Type

HBM2e

3072bit

Memory Bus

5120bit

1008GB/s

Bandwidth

2039GB/s

Render Config

132

SM Count

114

-

Compute Units

-

16896

Shading Units

14592

528

TMUs

456

24

ROPs

24

528

Tensor Cores

456

-

RT Cores

-

256 KB (per SM)

L1 Cache

256 KB (per SM)

50 MB

L2 Cache

50 MB

Theoretical Performance

47.52 GPixel/s

Pixel Rate

44.28 GPixel/s

1045 GTexel/s

Texture Rate

841.3 GTexel/s

267.6 TFLOPS

FP16 (half)

215.4 TFLOPS

66.91 TFLOPS

FP32 (float)

53.84 TFLOPS

33.45 TFLOPS

FP64 (double)

26.92 TFLOPS

Graphics Processor

GH100

GPU Name

GH100

-

GPU Variant

-

Hopper

Architecture

Hopper

TSMC

Foundry

TSMC

4 nm

Process Size

4 nm

80 billion

Transistors

80 billion

814 mm²

Die Size

814 mm²

Board Design

700W

TDP

350W

1100 W

Suggested PSU

750 W

No outputs

Outputs

No outputs

8-pin EPS

Power Connectors

8-pin EPS

Graphics Features

N/A

DirectX

N/A

OpenGL

N/A

3.0

OpenCL

3.0

N/A

Vulkan

N/A

9.0

CUDA

9.0

N/A

Shader Model

N/A

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