GeForce RTX 4090 Mobile vs Radeon RX Vega 56 Mobile

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Primary details

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

Place in the rankingnot rated18
Place by popularitynot in top-100not in top-100
Power efficiencyno data41.68
ArchitectureGCN 5.0 (2017−2020)Ada Lovelace (2022−2024)
GPU code nameVega 10AD103
Market segmentLaptopLaptop
Release date1 June 2018 (6 years ago)3 January 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 cores35849728
Core clock speed1138 MHz1335 MHz
Boost clock speed1301 MHz1695 MHz
Number of transistors12,500 million45,900 million
Manufacturing process technology14 nm4 nm
Power consumption (TDP)120 Watt120 Watt
Texture fill rate291.4515.3
Floating-point processing power9.326 TFLOPS32.98 TFLOPS
ROPs64112
TMUs224304
Tensor Coresno data304
Ray Tracing Coresno data76

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).

Laptop sizeno datalarge
InterfacePCIe 3.0 x16PCIe 4.0 x16

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 typeHBM2GDDR6
Maximum RAM amount8 GB16 GB
Memory bus width2048 Bit256 Bit
Memory clock speed800 MHz2250 MHz
Memory bandwidth409.6 GB/s576.0 GB/s
Shared memory--

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 Connectors1x HDMI, 3x DisplayPortPortable Device Dependent
HDMI+-

API compatibility

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

DirectX12 (12_1)12 Ultimate (12_2)
Shader Model6.46.7
OpenGL4.64.6
OpenCL2.03.0
Vulkan1.1.1251.3
CUDA-8.9

Pros & cons summary


Recency 1 June 2018 3 January 2023
Maximum RAM amount 8 GB 16 GB
Chip lithography 14 nm 4 nm

RTX 4090 Mobile has an age advantage of 4 years, a 100% higher maximum VRAM amount, and a 250% more advanced lithography process.

We couldn't decide between Radeon RX Vega 56 Mobile and GeForce RTX 4090 Mobile. 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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AMD Radeon RX Vega 56 Mobile
Radeon RX Vega 56 Mobile
NVIDIA GeForce RTX 4090 Mobile
GeForce RTX 4090 Mobile

Comparisons with similar GPUs

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Community ratings

Here you can see the user ratings of the compared graphics cards, as well as rate them yourself.


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3.6 638 votes

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Questions & comments

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