H100 CNX: specs and benchmarks

Summary

NVIDIA started H100 CNX sales 21 March 2023. This is a Hopper architecture desktop card based on 4 nm manufacturing process and primarily aimed at designers. 80 GB of HBM2e memory clocked at 1.59 GHz are supplied, and together with 5120 Bit memory interface this creates a bandwidth of 2,039 GB/s.

Compatibility-wise, this is a dual-slot graphics card attached via PCIe 5.0 x16 interface. Its manufacturer default version has a length of 267 mm. 8-pin EPS power connector is required, and power consumption is at 350 Watt.

Primary details

Some basic facts about H100 CNX: architecture, market segment, release date etc.

Place in the ranking	not rated
Place by popularity	not in top-100
Architecture	Hopper (2022−2023)
GPU code name	GH100
Market segment	Workstation
Release date	21 March 2023 (1 year ago)

Detailed specifications

H100 CNX's specs such as number of shaders, GPU base clock, manufacturing process, texturing and calculation speed. These parameters indirectly speak of H100 CNX's performance, but for precise assessment you have to consider its benchmark and gaming test results.

Pipelines / CUDA cores	14592	of 21760 (GeForce RTX 5090)
Core clock speed	690 MHz	of 2670 MHz (Arc B580)
Boost clock speed	1845 MHz	of 3599 MHz (Radeon RX 7990 XTX)
Number of transistors	80,000 million	of 208,000 million (B200 SXM 192 GB)
Manufacturing process technology	4 nm	of 3 nm (Arc Graphics 140V)
Power consumption (TDP)	350 Watt	of 2400 Watt (Data Center GPU Max Subsystem)
Texture fill rate	841.3	of 2,554 (Radeon Instinct MI300X)
Floating-point processing power	53.84 TFLOPS	of 109.7 (GeForce RTX 5090)
ROPs	24	of 192 (Radeon RX 7900 XTX)
TMUs	456	of 1280 (Data Center GPU Max NEXT)
Tensor Cores	456	of 1216 (Radeon Instinct MI300X)

Form factor & compatibility

This section provides details about the physical dimensions of H100 CNX and its compatibility with other computer components. This information is useful when selecting a computer configuration or upgrading an existing one. For desktop graphics cards, it includes details about the interface and bus (for motherboard compatibility) and additional power connectors (for power supply compatibility).

Interface	PCIe 5.0 x16
Length	267 mm
Width	2-slot
Supplementary power connectors	8-pin EPS

VRAM capacity and type

Parameters of memory installed on H100 CNX: its type, size, bus, clock and resulting bandwidth. Note that GPUs integrated into processors have no dedicated memory and use a shared part of system RAM instead.

Memory type	HBM2e
Maximum RAM amount	80 GB	of 294912 (Radeon Instinct MI325X)
Memory bus width	5120 Bit	of 8192 Bit (Radeon Instinct MI250X)
Memory clock speed	1593 MHz	of 20000 (RTX 5000 Ada Generation Mobile)
Memory bandwidth	2,039 GB/s	of 5,171 GB/s (Radeon Instinct MI300X)

Connectivity and outputs

Types and number of video connectors present on H100 CNX. As a rule, this section is relevant only for desktop reference graphics cards, since for notebook ones the availability of certain video outputs depends on the laptop model, while non-reference desktop models can (though not necessarily will) bear a different set of video ports.

Display Connectors

No outputs

API compatibility

APIs supported by H100 CNX, sometimes including their particular versions.

DirectX	N/A
Shader Model	N/A
OpenGL	N/A	of 4.6 (GeForce RTX 4090)
OpenCL	3.0
Vulkan	N/A
CUDA	9.0

Benchmark performance

Synthetic benchmark performance of H100 CNX. The combined score is measured on a 0-100 point scale.

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