AMD Instinct MI308X vs Intel Arc G3 Extreme Comparison

The Verdict

The database places both the AMD Instinct MI308X and the Intel Arc G3 Extreme at the 50th percentile among all recorded GPUs, with an average benchmark score of zero for each. This parity in aggregate ranking, however, masks two fundamentally different design targets. The AMD Instinct MI308X is a 750 W OAM module built for compute acceleration, while the Intel Arc G3 Extreme is an 80 W integrated graphics processor for portable devices. The data shows no head-to-head benchmark wins for either part, so the selection criterion rests entirely on workload type and platform constraints. The MI308X serves high-throughput data center tasks requiring massive memory bandwidth and raw FP32 throughput. The Arc G3 Extreme serves thin-and-light systems needing API compatibility and low power draw. Neither part can substitute for the other in their respective domains.

Architecture Differences

The AMD Instinct MI308X uses the Aqua Vanjaram chip built on CDNA 3.0 architecture, manufactured on a 5 nm process at TSMC. The die contains 153,000 million transistors across a 1017 mm² package, yielding a transistor density of 150.4 million per square millimeter. The Intel Arc G3 Extreme uses the Panther Lake chip built on Xe3-LPG architecture, manufactured on a 3 nm process at Intel. The database records no transistor count or die size for the Intel part, and no density figure is available.

The MI308X implements a CDNA 3.0 compute-oriented design with 19,456 shading units and 1,216 texture mapping units. It has zero ROPs, zero pixel rate, and no ray tracing cores. The Arc G3 Extreme has 1,536 shading units, 48 TMUs, 24 ROPs, and 12 ray tracing cores. The MI308X reports no DirectX, OpenGL, or Vulkan support, while the Arc G3 Extreme supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4.

Memory architecture diverges completely. The MI308X has 192 GB of HBM3 memory on an 8192-bit bus, delivering 5.32 TB/s of bandwidth. The Arc G3 Extreme uses system shared memory, with type, bus width, and bandwidth all listed as system dependent. The MI308X runs at a base clock of 1000 MHz and boost of 2100 MHz, with memory at 1300 MHz (5.2 Gbps effective). The Arc G3 Extreme has a base clock of 300 MHz and boost of 2500 MHz.

Head-to-Head Benchmarks

The database records zero head-to-head benchmark entries between these two parts, and neither item has any individual benchmark scores. WinsA and winsB are both zero. Without direct measurements, the comparison relies on the recorded raw specifications and feature sets.

The most decisive gap appears in compute throughput. The MI308X delivers 81.72 TFLOPS FP32 and 81.72 TFLOPS FP16 with a 1:1 ratio. The Arc G3 Extreme delivers 7.680 TFLOPS FP32 and 15.36 TFLOPS FP16 with a 2:1 ratio. The MI308X leads FP32 by a factor of approximately 10.6 times (81.72 divided by 7.680). In FP16, the MI308X leads by approximately 5.3 times (81.72 divided by 15.36). The Arc G3 Extreme's FP16 rate is exactly double its FP32 rate, indicating packed math support. The MI308X's 1:1 FP16 ratio means it does not gain a throughput advantage from reduced precision.

Texture rate favors the MI308X at 2,553.6 GTexel/s versus 120.0 GTexel/s for the Arc G3 Extreme, a ratio of roughly 21.3 times. Pixel rate runs in the opposite direction: the MI308X reports 0 MPixel/s (no ROPs), while the Arc G3 Extreme reports 60.00 GPixel/s. The Arc G3 Extreme has dedicated rasterization hardware, while the MI308X appears to omit pixel output entirely, consistent with a compute accelerator.

Memory bandwidth shows the largest absolute difference. The MI308X sustains 5.32 TB/s from its 8192-bit HBM3 interface. The Arc G3 Extreme's bandwidth is system dependent, with no fixed number recorded. The MI308X's 192 GB capacity vastly exceeds any integrated graphics allocation, and its 8192-bit bus is the widest recorded in the database for either part.

Specification Differences

| Field | AMD Instinct MI308X | Intel Arc G3 Extreme |

|---|---|---|

| Architecture | CDNA 3.0 | Xe3-LPG |

| Process Node | 5 nm (TSMC) | 3 nm (Intel) |

| Transistors | 153,000 million | unknown |

| Die Size | 1017 mm² | unknown |

| Base Clock | 1000 MHz | 300 MHz |

| Boost Clock | 2100 MHz | 2500 MHz |

| Memory Size | 192 GB HBM3 | System Shared |

| Memory Bus | 8192 bit | System Shared |

| Memory Bandwidth | 5.32 TB/s | System Dependent |

| Shading Units | 19,456 | 1,536 |

| TMUs | 1,216 | 48 |

| ROPs | 0 | 24 |

| RT Cores | None | 12 |

| Pixel Rate | 0 MPixel/s | 60.00 GPixel/s |

| Texture Rate | 2,553.6 GTexel/s | 120.0 GTexel/s |

| FP32 | 81.72 TFLOPS | 7.680 TFLOPS |

| FP16 | 81.72 TFLOPS (1:1) | 15.36 TFLOPS (2:1) |

| TDP | 750 W | 80 W |

| Slot Width | OAM Module | IGP |

| Bus Interface | PCIe 5.0 x16 | IGP |

| Display Outputs | No outputs | Portable Device Dependent |

| DirectX | N/A | 12 Ultimate (12_2) |

| OpenGL | N/A | 4.6 |

| Vulkan | N/A | 1.4 |

| Suggested PSU | 1150 W | None |

| Release Date | 2023-12-05 | 2026-05-31 |

| Production Status | Not recorded | Active |

| Predecessor | Radeon Instinct | None |

FAQ

Q: Which GPU has higher FP32 compute throughput?

A: The AMD Instinct MI308X records 81.72 TFLOPS FP32, while the Intel Arc G3 Extreme records 7.680 TFLOPS FP32. The MI308X 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 Instinct MI308X lists no ray tracing cores and reports zero pixel rate, indicating no rasterization pipeline.

Q: What memory does each GPU use?

A: The MI308X uses 192 GB of HBM3 on an 8192-bit bus with 5.32 TB/s bandwidth. The Arc G3 Extreme uses system shared memory, with type, bus width, and bandwidth all dependent on the host system.

Q: Which GPU has a higher boost clock?

A: The Intel Arc G3 Extreme boosts to 2500 MHz, which is higher than the MI308X's 2100 MHz boost. The MI308X has a higher base clock at 1000 MHz versus 300 MHz for the Arc G3 Extreme.

Q: What is the power consumption difference?

A: The MI308X 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 lists no suggested PSU, consistent with an integrated processor.

Q: Which GPU supports modern graphics APIs?

A: The Arc G3 Extreme supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The MI308X records N/A for all three APIs, reflecting its compute-only design without display outputs.

Where Each One Wins

The AMD Instinct MI308X wins on every raw compute metric recorded in the database. Its FP32 throughput of 81.72 TFLOPS is an order of magnitude above the Arc G3 Extreme. Its FP16 throughput of 81.72 TFLOPS is 5.3 times higher. Texture rate stands at 2,553.6 GTexel/s versus 120.0 GTexel/s. Memory bandwidth reaches 5.32 TB/s from a 192 GB HBM3 pool, a configuration designed for large model weights and high-bandwidth data movement. The 8192-bit bus width is the defining feature for memory-bound workloads. The MI308X's 750 W TDP and OAM module form factor place it in server racks with PCIe 5.0 x16 connectivity and no display outputs. Its 5 nm process and 153,000 million transistor count indicate a chip built purely for arithmetic density.

The Intel Arc G3 Extreme wins on integration and feature completeness. It operates at 80 W TDP with an IGP slot width and bus interface, making it suitable for portable devices where the display output is portable device dependent. Its 2500 MHz boost clock exceeds the MI308X's 2100 MHz boost. It delivers 60.00 GPixel/s pixel rate and 24 ROPs, enabling rasterization that the MI308X cannot perform. Twelve ray tracing cores provide hardware acceleration for ray-traced effects. API support covers DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.4, allowing it to run standard graphics workloads. Its FP16 rate of 15.36 TFLOPS is double its FP32 rate, indicating efficient packed math execution. The 3 nm process node at Intel represents a newer manufacturing generation than the MI308X's 5 nm TSMC node.

The release dates place the MI308X in December 2023 and the Arc G3 Extreme in May 2026. The Arc G3 Extreme is marked as active in production, while the MI308X's production status is not recorded. The MI308X lists Radeon Instinct as its predecessor, while the Arc G3 Extreme has no recorded predecessor.

For selection, the data supports a clear split. Any workload requiring large memory capacity, extreme bandwidth, or FP32 compute should target the MI308X. Any workload requiring graphics rendering, API compatibility, or low power draw should target the Arc G3 Extreme. The two parts do not compete on any recorded metric where one does not categorically dominate.