Radeon E8870 MXM vs GeForce RTX 4090 Mobile

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Primary details

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

Place in performance ranking39not rated
Place by popularitynot in top-100not in top-100
ArchitectureAda LovelaceGCN 2.0 (2013−2017)
GPU code nameGN21-X11Saturn
Market segmentLaptopDesktop
Release date3 January 2023 (1 year ago)29 September 2015 (8 years ago)

Detailed specifications

General performance parameters such as number of shaders, GPU core base clock and boost clock speeds, manufacturing process, texturing and calculation speed. These parameters indirectly speak of performance, but for precise assessment you have to consider their benchmark and gaming test results. Note that power consumption of some graphics cards can well exceed their nominal TDP, especially when overclocked.

Pipelines / CUDA cores9728768
Core clock speedno data1000 MHz
Boost clock speed2040 MHzno data
Number of transistors45,900 million2,080 million
Manufacturing process technology5 nm28 nm
Power consumption (TDP)150 Watt (80 - 150 Watt TGP)75 Watt
Texture fill rate515.348.00

Form factor & compatibility

Information on GeForce RTX 4090 Mobile and Radeon E8870 MXM compatibility with other computer components. Useful when choosing a future computer configuration or upgrading an existing one. For desktop video cards it's interface and bus (motherboard compatibility), additional power connectors (power supply compatibility). For notebook video cards it's notebook size, connection slot and bus, if the video card is inserted into a slot instead of being soldered to the notebook motherboard.

Laptop sizelargeno data
InterfacePCIe 4.0 x16MXM-B (3.0)
Widthno dataMXM Module
Supplementary power connectorsno dataNone

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 typeGDDR6GDDR5
Maximum RAM amount16 GB4 GB
Memory bus width256 Bit128 Bit
Memory clock speed20000 MHz6 GB/s
Memory bandwidth576.0 GB/s96 GB/s
Shared memory-no data

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 ConnectorsPortable Device DependentPortable Device Dependent

API compatibility

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

DirectX12 Ultimate (12_2)12 (12_0)
Shader Model6.76.5 (6.0)
OpenGL4.64.6
OpenCL3.02.1
Vulkan1.31.2.170
CUDA8.9no data

Pros & cons summary


Recency 3 January 2023 29 September 2015
Maximum RAM amount 16 GB 4 GB
Chip lithography 5 nm 28 nm
Power consumption (TDP) 150 Watt 75 Watt

We couldn't decide between GeForce RTX 4090 Mobile and Radeon E8870 MXM. We've got no test results to judge.

Be aware that GeForce RTX 4090 Mobile is a notebook card while Radeon E8870 MXM is a desktop one.


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 GeForce RTX 4090 Mobile
GeForce RTX 4090 Mobile
AMD Radeon E8870 MXM
Radeon E8870 MXM

Comparisons with similar GPUs

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Community ratings

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