Radeon Instinct MI300X vs Atari VCS 400 GPU

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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
ArchitectureGCN 5.0 (2017−2020)CDNA 3.0 (2023−2024)
GPU code nameBanded KestrelAqua Vanjaram
Market segmentDesktopWorkstation
Release date14 December 2020 (3 years ago)6 December 2023 (less than a year ago)
Launch price (MSRP)$249 no data

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 cores19219456
Core clock speed300 MHz1000 MHz
Boost clock speed1201 MHz2100 MHz
Number of transistors4,940 million153,000 million
Manufacturing process technology14 nm5 nm
Power consumption (TDP)15 Watt750 Watt
Texture fill rate14.412,554
Floating-point processing power0.4612 TFLOPS81.72 TFLOPS
ROPs4no data
TMUs121216
Tensor Coresno data1216

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).

InterfaceIGPPCIe 5.0 x16
Length295 mmno data
WidthIGPOAM Module
Supplementary power connectorsNoneNone

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 typeDDR4HBM3
Maximum RAM amount4 GB192 GB
Memory bus width128 Bit8192 Bit
Memory clock speed1200 MHz2525 MHz
Memory bandwidth38.4 GB/s5,171 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 ConnectorsNo outputsNo outputs

API compatibility

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

DirectX12 (12_1)N/A
Shader Model6.4N/A
OpenGL4.6N/A
OpenCL2.13.0
Vulkan1.2N/A

Pros & cons summary


Recency 14 December 2020 6 December 2023
Maximum RAM amount 4 GB 192 GB
Chip lithography 14 nm 5 nm
Power consumption (TDP) 15 Watt 750 Watt

Atari VCS 400 GPU has 4900% lower power consumption.

Instinct MI300X, on the other hand, has an age advantage of 2 years, a 4700% higher maximum VRAM amount, and a 180% more advanced lithography process.

We couldn't decide between Atari VCS 400 GPU and Radeon Instinct MI300X. We've got no test results to judge.

Be aware that Atari VCS 400 GPU is a desktop card while Radeon Instinct MI300X is a workstation 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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AMD Atari VCS 400 GPU
Atari VCS 400 GPU
AMD Radeon Instinct MI300X
Radeon Instinct MI300X

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Community ratings

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