GeForce RTX 4080 and H800 PCIe 80 GB - video card comparison

GeForce RTX 4080

H800 PCIe 80 GB

Architecture

Ada Lovelace

Hopper (2022)

GPU code name

AD103-300-A1

GH100

Market segment

Desktop

Release date

September 2022

March 2023

Interface

PCIe 4.0 x16

PCIe 5.0 x16

Supplementary power connectors

1x 16-pin

Boost clock speed

2505 MHz

1755 MHz

Core clock speed

2205 MHz

Manufacturing process technology

5 nm

4 nm

Number of transistors

45,900 million

80,000 million

Pipelines / CUDA cores

9728

14592

Power consumption (TDP)

320 Watt

350 Watt

Texture fill rate

761.5

800.3

Memory type

GDDR6X

HBM2e

Maximum RAM amount

16 GB

80 GB

Memory bus width

256 Bit

5120 Bit

Memory clock speed

22400 MHz

3.2 GB/s

Memory bandwidth

716.8 GB/s

2,039 GB/s

Shared memory

Display Connectors

1x HDMI 2.1, 3x DisplayPort 1.4a

No outputs

HDMI

DirectX

12 Ultimate (12_2)

N/A

CUDA

8.9

9.0

OpenCL

3.0

OpenGL

4.6

N/A

Shader Model

6.6

N/A

Vulkan

1.3

N/A