AMD Radeon Instinct MI300 vs Intel Arc G3 Extreme Comparison

FAQ

Q: What are the two processors compared in this database entry?

A: The AMD Radeon Instinct MI300, a data center accelerator built on the CDNA 3.0 architecture, and the Intel Arc G3 Extreme, an integrated graphics processor based on the Xe3-LPG architecture.

Q: How do the manufacturing processes differ between the two?

A: The AMD Radeon Instinct MI300 is fabricated on a 5 nm process at TSMC, using a 1017 mm² die that contains 153,000 million transistors. The Intel Arc G3 Extreme uses a 3 nm process at Intel, with the die size and transistor count listed as unknown.

Q: What are the memory configurations for each product?

A: The AMD Radeon Instinct MI300 has 128 GB of HBM3 memory on an 8192-bit bus, delivering 6.55 TB/s of bandwidth. The Intel Arc G3 Extreme uses system shared memory, with its bandwidth described as system dependent.

Q: What is the power draw of each chip?

A: The AMD Radeon Instinct MI300 has a TDP of 600 W and requires two 8-pin power connectors, with a suggested PSU of 1000 W. The Intel Arc G3 Extreme has an 80 W TDP, uses no power connectors, and is an integrated graphics processor.

Q: When did each product launch?

A: The AMD Radeon Instinct MI300 was released on January 3, 2023. The Intel Arc G3 Extreme has a release date of May 31, 2026, and its production status is listed as active.

Q: What API support does the Intel Arc G3 Extreme offer?

A: It supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The AMD Radeon Instinct MI300 has no listed API support for DirectX, OpenGL, or Vulkan.

Where Each One Wins

The AMD Radeon Instinct MI300 is built for raw compute throughput in data center environments. Its 47.87 TFLOPS of FP32 performance and 383.0 TFLOPS of FP16 performance (at an 8:1 ratio) position it as a high-throughput accelerator. The 1,496.0 GTexel/s texture rate and 6.55 TB/s memory bandwidth indicate a design focused on massive parallel workloads. The 128 GB HBM3 pool with an 8192-bit bus width provides exceptional capacity and speed for large datasets.

The Intel Arc G3 Extreme, as an integrated processor, wins in efficiency and portability. Its 80 W TDP is dramatically lower than the 600 W requirement of the MI300. The 3 nm Intel process node, while the die size is unknown, suggests a modern manufacturing approach. The 12 ray tracing cores and DirectX 12 Ultimate support give it capabilities in graphics rendering that the MI300 lacks entirely, as the AMD part has no display outputs. The 60.00 GPixel/s pixel rate and 2,500 MHz boost clock make it suitable for graphics workloads on portable devices.

The data shows a clear split: the MI300 targets compute density and memory capacity, while the Arc G3 Extreme targets integrated graphics functionality with modern API support and ray tracing. Neither part has benchmark scores recorded, so the wins here are defined by architectural capabilities rather than measured performance.

Architecture Differences

The AMD Radeon Instinct MI300 uses the CDNA 3.0 architecture, a design lineage focused on compute acceleration. The chip is named Aqua Vanjaram and belongs to the Radeon Instinct generation. It is manufactured on a 5 nm process at TSMC, with a die size of 1017 mm² and 153,000 million transistors, giving a transistor density of 150.4M per mm².

The Intel Arc G3 Extreme uses the Xe3-LPG architecture, part of the Arc Graphics-M generation for Panther Lake. It is built on Intel's 3 nm process, with the transistor count and die size not recorded in the database. The architecture differences extend to the compute units: the MI300 has 14,080 shading units, 880 texture mapping units, and no ROPs, while the Arc G3 Extreme has 1,536 shading units, 48 TMUs, and 24 ROPs. The MI300 has no ray tracing cores, whereas the Arc G3 Extreme includes 12.

Memory architecture diverges sharply. The MI300 uses dedicated HBM3 memory with an 8192-bit bus, while the Arc G3 Extreme relies on system shared memory with no dedicated bus width. The MI300 memory clock is 1600 MHz with 6.4 Gbps effective speed, while the Arc memory speed is system dependent.

The FD32 compute ratios also differ: the MI300 delivers 383.0 TFLOPS of FP16 at an 8:1 ratio, while the Arc G3 Extreme delivers 15.36 TFLOPS at a 2:1 ratio. This indicates the MI300 is optimized for mixed-precision workloads, while the Arc part maintains a closer relationship between FP16 and FP32 throughput.

Specification Differences

The AMD Radeon Instinct MI300 and Intel Arc G3 Extreme differ across nearly every measurable specification. The MI300 has a base clock of 1000 MHz and a boost clock of 1700 MHz, while the Arc G3 Extreme has a base clock of 300 MHz and a boost clock of 2500 MHz. The MI300 has a higher base clock but a lower boost clock, reflecting different thermal and power envelopes.

Memory capacity is 128 GB on the MI300 versus system shared on the Arc. The bus width is 8192 bit versus system shared, and bandwidth is 6.55 TB/s versus system dependent. The MI300 uses HBM3 memory, while the Arc uses system memory.

The shading unit count is 14,080 on the MI300 versus 1,536 on the Arc, a difference of roughly 9.2 times. TMUs number 880 versus 48, and ROPs are 0 versus 24. The pixel rate is 0 MPixel/s on the MI300 versus 60.00 GPixel/s on the Arc, because the MI300 has no ROPs. The texture rate is 1,496.0 GTexel/s versus 120.0 GTexel/s.

FP32 performance is 47.87 TFLOPS on the MI300 versus 7.680 TFLOPS on the Arc. FP16 performance is 383.0 TFLOPS versus 15.36 TFLOPS. The TDP is 600 W versus 80 W. The MI300 uses two 8-pin power connectors, while the Arc uses none. The bus interface is PCIe 5.0 x16 on the MI300 versus IGP on the Arc. Display outputs are absent on the MI300 and portable device dependent on the Arc. The MI300 has a length of 267 mm and height of 111 mm, while the Arc has no recorded dimensions.

Head-to-Head Benchmarks

The database contains no recorded head-to-head benchmark results for these two products. Both have an avgBenchmarkScore of 0 and no entries in their benchmark arrays. The percentileVsAllGpus is 50 for both, placing them at the median of all GPUs in the database, though this is based on the absence of benchmark data rather than measured performance.

The largest compute advantage for the AMD Radeon Instinct MI300 comes in FP16 throughput, where it delivers 383.0 TFLOPS compared to 15.36 TFLOPS for the Intel Arc G3 Extreme, a 24.9 times difference. In FP32, the MI300 delivers 47.87 TFLOPS versus 7.680 TFLOPS, a 6.2 times advantage. The texture rate difference is 12.5 times in favor of the MI300 (1,496.0 GTexel/s versus 120.0 GTexel/s).

The Intel Arc G3 Extreme wins in pixel throughput, delivering 60.00 GPixel/s versus 0 MPixel/s for the MI300, since the AMD part has no ROPs. The Arc also has a higher boost clock at 2500 MHz versus 1700 MHz, and it includes 12 ray tracing cores that the MI300 does not have.

The memory bandwidth gap is substantial: 6.55 TB/s on the MI300 versus system dependent on the Arc. With 128 GB of dedicated HBM3 memory, the MI300 provides a capacity that the Arc cannot match through shared system memory. The power efficiency comparison cannot be computed directly from the data, but the 80 W TDP of the Arc versus 600 W for the MI300 shows a 7.5 times difference in power draw.

The Verdict

The AMD Radeon Instinct MI300 is the appropriate choice for workloads requiring massive compute throughput and dedicated memory capacity. Its 128 GB of HBM3 memory, 6.55 TB/s bandwidth, and 47.87 TFLOPS of FP32 performance place it firmly in the data center accelerator category. The 14,080 shading units and 880 TMUs provide the parallel processing resources needed for large-scale compute tasks. The absence of display outputs and ROPs confirms its role as a compute-only processor.

The Intel Arc G3 Extreme suits systems needing integrated graphics with modern API support. Its 12 ray tracing cores, DirectX 12 Ultimate support, and 60.00 GPixel/s pixel rate give it graphics capabilities that the MI300 does not offer. The 80 W TDP and lack of power connectors make it suitable for portable devices, as indicated by its display outputs being portable device dependent. The 2,500 MHz boost clock shows a design optimized for burst performance rather than sustained compute.

The data indicates these products serve entirely different markets. The MI300's 153,000 million transistors on a 1017 mm² die represent a massive investment in compute density, while the Arc G3 Extreme's 3 nm process and 1,536 shading units represent an efficiency-focused integrated solution. The FP16 ratio difference (8:1 on the MI300 versus 2:1 on the Arc) suggests the MI300 is tuned for AI and machine learning workloads, while the Arc maintains more balanced precision performance for graphics.

Neither product has benchmark scores in the database, so direct performance comparisons rely on specification analysis. The MI300's 6.2 times FP32 advantage and 24.9 times FP16 advantage over the Arc are the most significant measured gaps. The Arc's pixel rate advantage and ray tracing support are its defining features. Users should select based on the specific requirements of their workload: compute density and memory capacity point to the MI300, while integrated graphics capability and low power draw point to the Arc G3 Extreme.