Radeon Instinct MI300X vs ATI FireGL X3-256

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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
ArchitectureR400 (2004−2008)CDNA 3.0 (2023−2024)
GPU code nameR420Aqua Vanjaram
Market segmentWorkstationDesktop
Release date3 August 2004 (20 years ago)6 December 2023 (less than a year ago)
Launch price (MSRP)$1,099 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 coresno data19456
Core clock speed491 MHzno data
Boost clock speedno data2100 MHz
Number of transistors160 million153,000 million
Manufacturing process technology130 nm5 nm
Power consumption (TDP)57 Watt750 Watt
Texture fill rate5.8922,554
ROPs12no data
TMUs121216

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).

InterfaceAGP 8xPCIe 5.0 x16
Width1-slotOAM Module
Supplementary power connectors1x MolexNone

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 speed908 MHz5 GB/s
Memory bandwidth29.06 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 Connectors2x DVI, 1x S-VideoNo outputs

API compatibility

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

DirectX9.0b (9_2)N/A
Shader Modelno dataN/A
OpenGL2.0N/A
OpenCLN/A3.0
VulkanN/AN/A

Pros & cons summary


Recency 3 August 2004 6 December 2023
Maximum RAM amount 256 MB 192 GB
Chip lithography 130 nm 5 nm
Power consumption (TDP) 57 Watt 750 Watt

ATI FireGL X3-256 has 1215.8% lower power consumption.

Instinct MI300X, on the other hand, has an age advantage of 19 years, a 76700% higher maximum VRAM amount, and a 2500% more advanced lithography process.

We couldn't decide between FireGL X3-256 and Radeon Instinct MI300X. We've got no test results to judge.

Be aware that FireGL X3-256 is a workstation graphics card while Radeon Instinct MI300X is a desktop one.


Should you still have questions concerning choice between the reviewed GPUs, ask them in Comments section, and we shall answer.

Vote for your favorite

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ATI FireGL X3-256
FireGL X3-256
AMD Radeon Instinct MI300X
Radeon Instinct MI300X

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.


5 1 vote

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3.4 54 votes

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

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Questions & comments

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