AMD Radeon Instinct MI300A vs Intel Arc G3 Extreme Comparison

Where Each One Wins

The AMD Radeon Instinct MI300A is a data center accelerator built around the CDNA 3.0 architecture. Its entire design targets compute throughput in dense, high-bandwidth environments. The Intel Arc G3 Extreme, by contrast, is an integrated graphics processor (IGP) based on Xe3-LPG architecture, meant to serve as the graphics core inside a Panther Lake mobile processor. These two parts do not compete in the same market segment, and their recorded specifications reflect completely different design priorities.

The MI300A wins decisively in raw compute throughput. Its FP32 rating of 81.72 TFLOPS dwarfs the Arc G3 Extreme’s 7.680 TFLOPS, a factor of roughly 10.6 times higher. In FP16, the MI300A reaches 653.7 TFLOPS (8:1), while the Arc G3 Extreme delivers 15.36 TFLOPS (2:1). The MI300A also holds a massive advantage in memory resources: 192 GB of HBM3 on a 8192-bit bus with 10.3 TB/s of bandwidth, compared to the Arc G3 Extreme’s System Shared memory, which offers System Dependent bandwidth. Texture rate favors the MI300A at 2,553.6 GTexel/s versus 120.0 GTexel/s for the Arc G3 Extreme.

The Arc G3 Extreme wins in areas that matter for an integrated part. It has a pixel rate of 60.00 GPixel/s, whereas the MI300A records 0 MPixel/s, as it has no display outputs and no ROPs. The Arc G3 Extreme supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4, while the MI300A lists no API support for any of those. The Arc G3 Extreme also carries 12 ray tracing cores, which the MI300A does not feature. Power consumption favors the Arc G3 Extreme dramatically: its 80 W TDP is far below the MI300A’s 750 W, and it requires no power connectors or suggested PSU rating, while the MI300A lists a suggested PSU of 1150 W.

The Verdict

The data indicates that the AMD Radeon Instinct MI300A is engineered for server-side compute acceleration. Its 19456 shading units, 1216 TMUs, and 153,000 million transistors on a 1017 mm² die are all tailored toward large-scale floating-point workloads. The Arc G3 Extreme, with 1536 shading units, 48 TMUs, and 24 ROPs, is built for integrated graphics duties within a mobile processor. Neither part is a substitute for the other.

For workloads that require massive memory capacity, extreme bandwidth, and high FP32 or FP16 throughput, the MI300A is the clear choice. Its 10.3 TB/s memory bandwidth is over 1000 times the System Dependent figure of the Arc G3 Extreme, which depends entirely on the host system’s shared memory configuration. The MI300A’s HBM3 memory on a 8192-bit bus provides deterministic, high-speed access that an IGP cannot match.

For systems that need display output, modern graphics API support, and ray tracing, the Arc G3 Extreme is the only option among these two. The MI300A offers no display outputs and no rasterization pipeline, as evidenced by its 0 MPixel/s pixel rate and null API entries. The Arc G3 Extreme’s 12 ray tracing cores and DirectX 12 Ultimate support make it suitable for graphics rendering in portable devices.

The production status also separates them: the Arc G3 Extreme is listed as Active, while the MI300A has no recorded production status. The MI300A’s release date of 2023-12-05 and the Arc G3 Extreme’s release date of 2026-05-31 place them in different eras of the database’s coverage.

Head-to-Head Benchmarks

The head-to-head benchmark dataset for this pair is empty, so the comparison relies on specification-level measurements recorded in the database. The largest win for the MI300A is in FP32 compute: 81.72 TFLOPS versus 7.680 TFLOPS. That represents a 10.6-fold advantage, which translates to roughly 964% higher throughput. In FP16, the MI300A’s 653.7 TFLOPS is about 42.5 times the Arc G3 Extreme’s 15.36 TFLOPS.

Memory bandwidth is another decisive category. The MI300A’s 10.3 TB/s is a fixed, hardware-defined figure, while the Arc G3 Extreme’s bandwidth is System Dependent, meaning it varies with the host platform. The MI300A’s 192 GB capacity and 8192-bit bus width are fixed specifications, whereas the Arc G3 Extreme shares system memory with no dedicated allocation.

Texture rate favors the MI300A by a factor of 21.3: 2,553.6 GTexel/s versus 120.0 GTexel/s. This is consistent with the MI300A’s 1216 TMUs compared to the Arc G3 Extreme’s 48 TMUs. The MI300A’s shading unit count is 19456 versus 1536, a 12.7-fold difference that directly impacts FP32 throughput.

The Arc G3 Extreme wins in pixel rate, 60.00 GPixel/s versus 0 MPixel/s. This reflects the MI300A’s complete lack of ROPs, while the Arc G3 Extreme has 24 ROPs. The Arc G3 Extreme also surpasses the MI300A in clock boost speed: 2500 MHz versus 2100 MHz. Its base clock of 300 MHz is far lower than the MI300A’s 1000 MHz, but the boost behavior differs by design.

Process node favors the Arc G3 Extreme: 3 nm versus 5 nm. The foundries also differ, with Intel fabricating the Arc G3 Extreme and TSMC fabricating the MI300A. Transistor count is known only for the MI300A at 153,000 million, while the Arc G3 Extreme’s transistor count is listed as unknown.

FAQ

Q: Which GPU has higher FP32 performance?

A: The AMD Radeon Instinct MI300A delivers 81.72 TFLOPS FP32, while the Intel Arc G3 Extreme delivers 7.680 TFLOPS. The MI300A is approximately 10.6 times faster in this metric.

Q: Does the Intel Arc G3 Extreme support ray tracing?

A: Yes. The Arc G3 Extreme includes 12 ray tracing cores. The AMD Radeon Instinct MI300A lists no ray tracing cores in the database.

Q: What memory configuration does each GPU use?

A: The MI300A uses 192 GB of HBM3 memory on a 8192-bit bus with 10.3 TB/s bandwidth. The Arc G3 Extreme uses System Shared memory with System Dependent bandwidth and bus width.

Q: Which GPU has display outputs?

A: The Arc G3 Extreme has display outputs listed as Portable Device Dependent. The MI300A has no outputs.

Q: What is the TDP difference between the two?

A: The MI300A has a TDP of 750 W and requires a suggested PSU of 1150 W. The Arc G3 Extreme has a TDP of 80 W and does not list a suggested PSU.

Q: Which GPU supports DirectX 12 Ultimate?

A: The Arc G3 Extreme supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The MI300A lists no API support for DirectX, OpenGL, or Vulkan.

Architecture Differences

The AMD Radeon Instinct MI300A uses the CDNA 3.0 architecture, implemented on the Aqua Vanjaram chip. It is fabricated on a 5 nm process at TSMC, with a die size of 1017 mm² and 153,000 million transistors. The transistor density works out to 150.4 million per square millimeter. The Intel Arc G3 Extreme uses the Xe3-LPG architecture, built on the Panther Lake chip. It is fabricated on a 3 nm process at Intel, with unknown transistor count and die size.

The MI300A is a discrete accelerator in the Radeon Instinct (MIx) generation, packaged as an OAM Module with a PCIe 5.0 x16 bus interface. It has no power connectors and no display outputs. The Arc G3 Extreme is an integrated graphics processor in the Arc Graphics-M (Panther Lake) generation. Its slot width is IGP, its bus interface is IGP, and its display outputs are Portable Device Dependent.

The MI300A’s memory subsystem is a fixed 192 GB of HBM3 on an 8192-bit bus, providing 10.3 TB/s of bandwidth. The memory clock is 2525 MHz, which translates to 10.1 Gbps effective. The Arc G3 Extreme uses System Shared memory, meaning its capacity, bus width, and bandwidth are all determined by the host system. Its memory clock is listed as System Shared.

Compute resources differ substantially. The MI300A has 19456 shading units, 1216 TMUs, and 0 ROPs. The Arc G3 Extreme has 1536 shading units, 48 TMUs, and 24 ROPs. The MI300A’s texture rate is 2,553.6 GTexel/s, and its pixel rate is 0 MPixel/s. The Arc G3 Extreme’s texture rate is 120.0 GTexel/s, and its pixel rate is 60.00 GPixel/s.

Clock behavior also diverges. The MI300A runs at 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 MI300A’s power envelope is 750 W, while the Arc G3 Extreme consumes 80 W.

API support separates the two clearly. The Arc G3 Extreme lists DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The MI300A has null entries for DirectX, OpenGL, and Vulkan, indicating it is not a graphics rendering part in the traditional sense. Its zero ROP count and lack of display outputs reinforce this, positioning it purely as a compute accelerator.

The release timeline also differs. The MI300A launched on 2023-12-05, with the FirePro Data Center as its predecessor. The Arc G3 Extreme is scheduled for 2026-05-31 and has no listed predecessor. The Arc G3 Extreme’s production status is Active, while the MI300A has no production status recorded. Both parts sit at the 50th percentile among all GPUs in the database, with an average benchmark score of 0, which reflects the absence of recorded benchmark runs rather than performance equivalence.