AMD Radeon Instinct MI300X vs Intel Arc G3 Extreme Comparison

AMD Radeon Instinct MI300X and Intel Arc G3 Extreme occupy opposite ends of the graphics hardware spectrum. The MI300X is a massive data center accelerator built for heavy compute workloads, while the Arc G3 Extreme is a compact integrated processor intended for mobile and low-power systems. Benchmark results in the database show both cards hold the same 50th percentile ranking among all GPUs, but their recorded specifications reveal fundamentally different design goals and application targets.

Where Each One Wins

The AMD Radeon Instinct MI300X is clearly designed for massive parallel compute. Its 19,456 shading units and 1,216 texture mapping units provide an enormous foundation for FP32 and FP16 workloads. The recorded FP32 throughput of 81.72 TFLOPS places it in a performance class that only dedicated data center accelerators can reach. The FP16 figure of 653.7 TFLOPS, achieved through an 8:1 ratio, indicates a focus on AI inference and training tasks where reduced precision is common. Texture rate of 2,553.6 GTexel/s further confirms its strength in memory-bandwidth-heavy operations.

The Intel Arc G3 Extreme wins in the integrated graphics category, where its 1,536 shading units and 12 ray tracing cores provide a complete feature set for a mobile processor. Its FP32 output of 7.680 TFLOPS, while far lower than the MI300X, is substantial for an IGP. The FP16 rate of 15.36 TFLOPS at a 2:1 ratio shows a balanced approach to compute, suitable for graphics rendering and lightweight AI tasks. The Arc G3 Extreme also supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4, which means modern gaming APIs are fully covered.

The MI300X reports no display outputs and a pixel rate of 0 MPixel/s, which makes clear it is not intended for rendering to a screen. The Arc G3 Extreme, by contrast, has a pixel rate of 60.00 GPixel/s and display outputs described as portable device dependent, confirming its role as a visual output solution for laptops and handhelds. The database shows a clean split: the MI300X targets raw compute throughput, while the Arc G3 Extreme targets integrated graphics capability within a power-constrained environment.

Architecture Differences

The two processors are built on different manufacturing processes and architectures. The AMD Radeon Instinct MI300X uses a 5 nm process at TSMC and implements the CDNA 3.0 architecture on a chip called Aqua Vanjaram. The die size is 1017 mm² and contains 153,000 million transistors, yielding a transistor density of 150.4 million per square millimeter. This is a dedicated accelerator chip, packaged as an OAM Module, with no power connectors listed and a suggested power supply of 1150 W. Its bus interface is PCIe 5.0 x16, and it has no display outputs.

The Intel Arc G3 Extreme uses a 3 nm process at Intel and implements the Xe3-LPG architecture on a chip called Panther Lake. Transistor count and die size are listed as unknown, and the transistor density field is null. This is an integrated graphics processor, or IGP, meaning it shares the system memory. Its bus interface is listed as IGP, and its power connectors are none. The TDP is 80 W, a small fraction of the MI300X's 750 W. The display outputs are portable device dependent, which fits its mobile positioning.

Memory architecture differs completely. The MI300X has 192 GB of HBM3 memory on an 8192-bit bus, with memory clock of 2525 MHz and 10.1 Gbps effective. Bandwidth is 10.3 TB/s. The Arc G3 Extreme uses system shared memory, with type, bus width, and bandwidth all listed as system dependent. The MI300X's dedicated high-bandwidth memory is critical for data center workloads, while the Arc G3 Extreme's reliance on shared system memory is typical for integrated graphics. The rendering pipelines also diverge: the MI300X has no ROPs and no ray tracing cores, while the Arc G3 Extreme has 24 ROPs and 12 ray tracing cores. The MI300X is not built for rasterization or ray tracing; its pixel rate of 0 MPixel/s confirms this. The Arc G3 Extreme, with 60.00 GPixel/s pixel rate, is designed to render frames.

Head-to-Head Benchmarks

The database does not list any direct head-to-head benchmark results between these two processors, and neither has recorded benchmark scores. The wins counter shows zero for each side. This absence of measured data means the comparison must rely entirely on the recorded specification fields. Still, the specification gaps are so wide that the functional differences are unambiguous.

In FP32 compute, the MI300X delivers 81.72 TFLOPS against the Arc G3 Extreme's 7.680 TFLOPS. This is a factor of roughly 10.6, meaning the AMD part provides more than ten times the single-precision throughput. In FP16, the MI300X reaches 653.7 TFLOPS, compared to 15.36 TFLOPS for the Intel part. That is a ratio of about 42.6, driven by the MI300X's 8:1 FP16 ratio versus the Arc G3 Extreme's 2:1 ratio. The FP16 advantage is even larger than the FP32 advantage, which suggests the MI300X is particularly optimized for mixed-precision workloads.

Texture rate shows a similar pattern. The MI300X records 2,553.6 GTexel/s, while the Arc G3 Extreme records 120.0 GTexel/s. The AMD part leads by a factor of over 21. Pixel rate is the one metric where the Arc G3 Extreme has a nonzero value: 60.00 GPixel/s versus 0 MPixel/s for the MI300X. This is the only recorded specification where the Intel part is not simply a smaller version of the AMD part, it is the only one with any rasterization output capability at all. Memory bandwidth also tells a stark story: 10.3 TB/s for the MI300X versus system dependent for the Arc G3 Extreme. The MI300X has 192 GB of memory, while the Arc G3 Extreme has no dedicated memory of its own.

Clock behavior differs in a way that reflects their design contexts. The MI300X has a base clock of 1000 MHz and a boost clock of 2100 MHz. The Arc G3 Extreme has a base clock of 300 MHz and a boost clock of 2500 MHz. The Intel part has a higher boost clock, but its much smaller execution resources mean the raw throughput remains far lower. The MI300X's higher base clock suggests a sustained-load design, whereas the Arc G3 Extreme's low base and high boost clocks are common in mobile parts that spend most of their time in low-power states.

FAQ

Q: Which GPU has more shading units?

A: The AMD Radeon Instinct MI300X has 19,456 shading units, while the Intel Arc G3 Extreme has 1,536 shading units.

Q: What is the FP16 performance of each card?

A: The MI300X records 653.7 TFLOPS FP16 at an 8:1 ratio. The Arc G3 Extreme records 15.36 TFLOPS FP16 at a 2:1 ratio.

Q: Does the AMD Radeon Instinct MI300X support ray tracing?

A: No. The MI300X has no ray tracing cores listed, while the Intel Arc G3 Extreme has 12 ray tracing cores.

Q: What memory configuration does each card use?

A: The MI300X uses 192 GB of HBM3 on an 8192-bit bus with 10.3 TB/s bandwidth. The Arc G3 Extreme uses system shared memory, with its bandwidth listed as system dependent.

Q: Which card has a higher boost clock?

A: The Intel Arc G3 Extreme has a boost clock of 2500 MHz, which is higher than the MI300X's boost clock of 2100 MHz.

Q: What is the power consumption of each card?

A: The MI300X has a TDP of 750 W and a suggested power supply of 1150 W. The Arc G3 Extreme has a TDP of 80 W and no suggested power supply listed.

The Verdict

The recorded data points to two entirely different products. The AMD Radeon Instinct MI300X is a data center accelerator with 192 GB of HBM3, 19,456 shading units, and 10.3 TB/s of memory bandwidth. It has no display outputs, no ROPs, and no ray tracing cores. Every specification except pixel rate favors it for compute-heavy tasks. The 81.72 TFLOPS FP32 and 653.7 TFLOPS FP16 figures place it in a class meant for AI training, scientific simulation, and large-scale parallel processing.

The Intel Arc G3 Extreme is an integrated GPU with 1,536 shading units, 12 ray tracing cores, and 24 ROPs. Its 7.680 TFLOPS FP32 and 15.36 TFLOPS FP16 are modest in absolute terms but respectable for an IGP. It supports DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.4, making it suitable for modern gaming and general graphics output. Its 80 W TDP and system shared memory confirm its role in battery-powered portable devices.

Users seeking a graphics solution for a laptop or portable device should select the Intel Arc G3 Extreme. It is the only one of the two with display outputs, rasterization hardware, and ray tracing support. Users working on data center compute, machine learning, or high-performance scientific workloads should select the AMD Radeon Instinct MI300X, as its massive memory capacity, memory bandwidth, and compute throughput are unmatched in this comparison. The database shows no direct benchmark results between the two, but the specification deltas in FP32, FP16, texture rate, and memory bandwidth are so large that the intended use cases are clear.

Specification Differences

The following fields differ between the AMD Radeon Instinct MI300X and the Intel Arc G3 Extreme.

• Architecture: CDNA 3.0 (MI300X) versus Xe3-LPG (Arc G3 Extreme)
• Process Node: 5 nm (MI300X) versus 3 nm (Arc G3 Extreme)
• Foundry: TSMC (MI300X) versus Intel (Arc G3 Extreme)
• Transistors: 153,000 million (MI300X) versus unknown (Arc G3 Extreme)
• Die Size: 1017 mm² (MI300X) versus unknown (Arc G3 Extreme)
• Transistor Density: 150.4M per mm² (MI300X) versus null (Arc G3 Extreme)
• Base Clock: 1000 MHz (MI300X) versus 300 MHz (Arc G3 Extreme)
• Boost Clock: 2100 MHz (MI300X) versus 2500 MHz (Arc G3 Extreme)
• Memory Clock: 2525 MHz, 10.1 Gbps effective (MI300X) versus system shared (Arc G3 Extreme)
• Memory Size: 192 GB HBM3 (MI300X) versus system shared (Arc G3 Extreme)
• Memory Type: HBM3 (MI300X) versus system shared (Arc G3 Extreme)
• Memory Bus Width: 8192 bit (MI300X) versus system shared (Arc G3 Extreme)
• Memory Bandwidth: 10.3 TB/s (MI300X) versus system dependent (Arc G3 Extreme)
• Shading Units: 19,456 (MI300X) versus 1,536 (Arc G3 Extreme)
• TMUs: 1,216 (MI300X) versus 48 (Arc G3 Extreme)
• ROPs: 0 (MI300X) versus 24 (Arc G3 Extreme)
• Ray Tracing Cores: null (MI300X) versus 12 (Arc G3 Extreme)
• Pixel Rate: 0 MPixel/s (MI300X) versus 60.00 GPixel/s (Arc G3 Extreme)
• Texture Rate: 2,553.6 GTexel/s (MI300X) versus 120.0 GTexel/s (Arc G3 Extreme)
• FP32: 81.72 TFLOPS (MI300X) versus 7.680 TFLOPS (Arc G3 Extreme)
• FP16: 653.7 TFLOPS at 8:1 (MI300X) versus 15.36 TFLOPS at 2:1 (Arc G3 Extreme)
• TDP: 750 W (MI300X) versus 80 W (Arc G3 Extreme)
• Slot Width: OAM Module (MI300X) versus IGP (Arc G3 Extreme)
• Suggested PSU: 1150 W (MI300X) versus null (Arc G3 Extreme)
• Bus Interface: PCIe 5.0 x16 (MI300X) versus IGP (Arc G3 Extreme)
• Display Outputs: No outputs (MI300X) versus portable device dependent (Arc G3 Extreme)
• DirectX Support: null (MI300X) versus 12 Ultimate (12_2) (Arc G3 Extreme)
• OpenGL Support: null (MI300X) versus 4.6 (Arc G3 Extreme)
• Vulkan Support: null (MI300X) versus 1.4 (Arc G3 Extreme)
• Production Status: null (MI300X) versus active (Arc G3 Extreme)
• Release Date: 2023-12-05 (MI300X) versus 2026-05-31 (Arc G3 Extreme)
• Predecessor: FirePro Data Center (MI300X) versus null (Arc G3 Extreme)