RTX A400 vs H100 CNX

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Primary details

GPU architecture, market segment, value for money and other general parameters compared.

Place in the rankingnot rated423
Place by popularitynot in top-100not in top-100
Power efficiencyno data14.94
ArchitectureHopper (2022−2023)Ampere (2020−2024)
GPU code nameGH100GA107
Market segmentWorkstationWorkstation
Release date21 March 2023 (1 year ago)16 April 2024 (less than a year ago)

Detailed specifications

General parameters such as number of shaders, GPU core base clock and boost clock speeds, manufacturing process, texturing and calculation speed. Note that power consumption of some graphics cards can well exceed their nominal TDP, especially when overclocked.

Pipelines / CUDA cores14592768
Core clock speed690 MHz727 MHz
Boost clock speed1845 MHz1762 MHz
Number of transistors80,000 million8,700 million
Manufacturing process technology4 nm8 nm
Power consumption (TDP)350 Watt50 Watt
Texture fill rate841.342.29
Floating-point processing power53.84 TFLOPS2.706 TFLOPS
ROPs2416
TMUs45624
Tensor Cores45624
Ray Tracing Coresno data6

Form factor & compatibility

Information on compatibility with other computer components. Useful when choosing a future computer configuration or upgrading an existing one. For desktop graphics cards it's interface and bus (motherboard compatibility), additional power connectors (power supply compatibility).

InterfacePCIe 5.0 x16PCIe 4.0 x8
Length267 mm163 mm
Width2-slot1-slot
Supplementary power connectors8-pin EPSNone

VRAM capacity and type

Parameters of VRAM installed: its type, size, bus, clock and resulting bandwidth. Integrated GPUs have no dedicated video RAM and use a shared part of system RAM.

Memory typeHBM2eGDDR6
Maximum RAM amount80 GB4 GB
Memory bus width5120 Bit64 Bit
Memory clock speed1593 MHz1500 MHz
Memory bandwidth2,039 GB/s96 GB/s

Connectivity and outputs

Types and number of video connectors present on the reviewed GPUs. As a rule, data in this section is precise only for desktop reference ones (so-called Founders Edition for NVIDIA chips). OEM manufacturers may change the number and type of output ports, while for notebook cards availability of certain video outputs ports depends on the laptop model rather than on the card itself.

Display ConnectorsNo outputs4x mini-DisplayPort 1.4a

API compatibility

List of supported 3D and general-purpose computing APIs, including their specific versions.

DirectXN/A12 Ultimate (12_2)
Shader ModelN/A6.7
OpenGLN/A4.6
OpenCL3.03.0
VulkanN/A1.3
CUDA9.08.6

Pros & cons summary


Recency 21 March 2023 16 April 2024
Maximum RAM amount 80 GB 4 GB
Chip lithography 4 nm 8 nm
Power consumption (TDP) 350 Watt 50 Watt

H100 CNX has a 1900% higher maximum VRAM amount, and a 100% more advanced lithography process.

RTX A400, on the other hand, has an age advantage of 1 year, and 600% lower power consumption.

We couldn't decide between H100 CNX and RTX A400. We've got no test results to judge.


Should you still have questions concerning choice between the reviewed GPUs, ask them in Comments section, and we shall answer.

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NVIDIA H100 CNX
H100 CNX
NVIDIA RTX A400
RTX A400

Comparisons with similar GPUs

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Community ratings

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4 1 vote

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3.3 11 votes

Rate RTX A400 on a scale of 1 to 5:

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Questions & comments

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