Radeon Instinct MI300X vs ATI Mobility X1800 XT

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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
ArchitectureR500 (2005−2007)CDNA 3.0 (2023−2024)
GPU code nameM58Aqua Vanjaram
Market segmentLaptopWorkstation
Release date1 March 2006 (18 years ago)6 December 2023 (less than a 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 coresno data19456
Core clock speed550 MHz1000 MHz
Boost clock speedno data2100 MHz
Number of transistors321 million153,000 million
Manufacturing process technology90 nm5 nm
Power consumption (TDP)no data750 Watt
Texture fill rate8.8002,554
Floating-point processing powerno data81.72 TFLOPS
ROPs16no data
TMUs161216
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).

InterfacePCIe 1.0 x16PCIe 5.0 x16
Widthno dataOAM 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 typeGDDR3HBM3
Maximum RAM amount256 MB192 GB
Memory bus width256 Bit8192 Bit
Memory clock speed650 MHz2525 MHz
Memory bandwidth41.6 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.

DirectX9.0c (9_3)N/A
Shader Model3.0N/A
OpenGL2.0N/A
OpenCLN/A3.0
VulkanN/AN/A

Pros & cons summary


Recency 1 March 2006 6 December 2023
Maximum RAM amount 256 MB 192 GB
Chip lithography 90 nm 5 nm

Instinct MI300X has an age advantage of 17 years, a 76700% higher maximum VRAM amount, and a 1700% more advanced lithography process.

We couldn't decide between Mobility Radeon X1800 XT and Radeon Instinct MI300X. We've got no test results to judge.

Be aware that Mobility Radeon X1800 XT is a notebook 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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ATI Mobility Radeon X1800 XT
Mobility Radeon X1800 XT
AMD Radeon Instinct MI300X
Radeon Instinct MI300X

Comparisons with similar GPUs

We selected several comparisons of graphics cards with performance close to those reviewed, providing you with more options to consider.

Community ratings

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


1.8 5 votes

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3.4 56 votes

Rate Radeon Instinct MI300X on a scale of 1 to 5:

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Questions & comments

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