H800 SXM5 vs RTX A4000

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Primary details

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

Place in the ranking58not rated
Place by popularitynot in top-100not in top-100
Power efficiency24.73no data
ArchitectureAmpere (2020−2024)Hopper (2022−2023)
GPU code nameGA104GH100
Market segmentWorkstationWorkstation
Release date12 April 2021 (3 years ago)21 March 2023 (1 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 cores614416896
Core clock speed735 MHz1095 MHz
Boost clock speed1560 MHz1755 MHz
Number of transistors17,400 million80,000 million
Manufacturing process technology8 nm4 nm
Power consumption (TDP)140 Watt700 Watt
Texture fill rate299.5926.6
Floating-point processing power19.17 TFLOPS59.3 TFLOPS
ROPs9624
TMUs192528
Tensor Cores192528
Ray Tracing Cores48no data

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 4.0 x16PCIe 5.0 x16
Length241 mmno data
Width1-slotSXM Module
Supplementary power connectors1x 6-pin8-pin EPS

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 typeGDDR6HBM3
Maximum RAM amount16 GB80 GB
Memory bus width256 Bit5120 Bit
Memory clock speed1750 MHz1313 MHz
Memory bandwidth448.0 GB/s1,681 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 Connectors4x DisplayPort 1.4aNo outputs

API compatibility

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

DirectX12 Ultimate (12_2)N/A
Shader Model6.7N/A
OpenGL4.6N/A
OpenCL3.03.0
Vulkan1.3N/A
CUDA8.69.0

Pros & cons summary


Recency 12 April 2021 21 March 2023
Maximum RAM amount 16 GB 80 GB
Chip lithography 8 nm 4 nm
Power consumption (TDP) 140 Watt 700 Watt

RTX A4000 has 400% lower power consumption.

H800 SXM5, on the other hand, has an age advantage of 1 year, a 400% higher maximum VRAM amount, and a 100% more advanced lithography process.

We couldn't decide between RTX A4000 and H800 SXM5. 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 RTX A4000
RTX A4000
NVIDIA H800 SXM5
H800 SXM5

Comparisons with similar GPUs

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Community ratings

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4 636 votes

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4.3 6 votes

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Questions & comments

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