RTX A4000H vs RTX A40

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Primary details

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

Place in the rankingnot ratednot rated
Place by popularitynot in top-100not in top-100
ArchitectureAmpere (2020−2024)Ampere (2020−2024)
GPU code nameGA102GA104
Market segmentWorkstationWorkstation
Release date5 October 2020 (4 years ago)12 April 2021 (3 years 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 cores107526144
Core clock speed1305 MHz735 MHz
Boost clock speed1755 MHz1560 MHz
Number of transistors28,300 million17,400 million
Manufacturing process technology8 nm8 nm
Power consumption (TDP)300 Watt140 Watt
Texture fill rate589.7299.5
Floating-point processing power37.74 TFLOPS19.17 TFLOPS
ROPs11296
TMUs336192
Tensor Cores336192
Ray Tracing Cores8448

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 4.0 x16
Length267 mm241 mm
Width2-slot1-slot
Supplementary power connectors8-pin EPS1x 6-pin

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 typeGDDR6GDDR6
Maximum RAM amount48 GB16 GB
Memory bus width384 Bit256 Bit
Memory clock speed1812 MHz1750 MHz
Memory bandwidth695.8 GB/s448.0 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 Connectors3x DisplayPort4x DisplayPort 1.4a

API compatibility

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

DirectX12 Ultimate (12_2)12 Ultimate (12_2)
Shader Model6.56.7
OpenGL4.64.6
OpenCL2.03.0
Vulkan1.21.3
CUDA8.68.6

Pros & cons summary


Recency 5 October 2020 12 April 2021
Maximum RAM amount 48 GB 16 GB
Power consumption (TDP) 300 Watt 140 Watt

RTX A40 has a 200% higher maximum VRAM amount.

RTX A4000H, on the other hand, has an age advantage of 6 months, and 114.3% lower power consumption.

We couldn't decide between RTX A40 and RTX A4000H. 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 A40
RTX A40
NVIDIA RTX A4000H
RTX A4000H

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Community ratings

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