AMD Instinct MI300 vs Intel Arc G3 Extreme Comparison

Head-to-Head Benchmarks

The recorded data shows no direct head-to-head benchmark results between the AMD Instinct MI300 and the Intel Arc G3 Extreme. The database contains zero benchmark entries for both products, and the wins tally sits at 0 for each side. Without measured performance scores, the comparison must rely entirely on architectural specifications and computed throughput values.

The FP32 compute figures reveal a substantial gap. The AMD Instinct MI300 delivers 47.87 TFLOPS of single-precision performance, while the Intel Arc G3 Extreme provides 7.680 TFLOPS. This places the AMD part approximately 6.2 times higher in raw FP32 throughput. The FP16 comparison shifts slightly due to different ratio implementations: the MI300 achieves 47.87 TFLOPS at a 1:1 ratio with FP32, while the Arc G3 Extreme reaches 15.36 TFLOPS at a 2:1 ratio, which is roughly 3.1 times lower than the MI300's FP16 output.

Texture processing shows a similar pattern. The MI300 attains 1,496.0 GTexel/s, compared to 120.0 GTexel/s for the Arc G3 Extreme, a margin of roughly 12.5 times. Pixel throughput tells a different story, as the MI300 records 0 MPixel/s due to having no ROP units, while the Arc G3 Extreme achieves 60.00 GPixel/s from its 24 ROPs. This is the only throughput metric where the Intel part leads outright.

Architecture Differences

The two processors come from entirely different design philosophies. The AMD Instinct MI300 uses the CDNA 3.0 architecture on the Aqua Vanjaram chip, fabricated by TSMC at 5 nm. It belongs to the Instinct (MIx) generation, positioning it as a dedicated compute accelerator. The Intel Arc G3 Extreme employs the Xe3-LPG architecture on the Panther Lake chip, manufactured by Intel at 3 nm, and belongs to the Arc Graphics-M (Panther Lake) generation, indicating an integrated graphics solution for mobile platforms.

The transistor counts differ enormously. The MI300 integrates 153,000 million transistors on a 1017 mm² die, yielding a density of 150.4M per mm². The Arc G3 Extreme's transistor count and die size are listed as unknown, so no density comparison is possible. The process nodes do show a notable difference: 5 nm for AMD versus 3 nm for Intel, though the latter is an Intel foundry process while the former comes from TSMC.

Memory architecture separates these products fundamentally. The MI300 features 128 GB of HBM3 on an 8192-bit bus, delivering 5.32 TB/s of bandwidth. The Arc G3 Extreme uses System Shared memory, with the bus width and bandwidth also listed as System Shared and System Dependent respectively. This means the Intel part relies on the host system's memory subsystem, while the AMD accelerator carries dedicated high-bandwidth memory.

Clock behavior differs as well. The MI300 runs at a 1000 MHz base and 1700 MHz boost, with memory at 1300 MHz or 5.2 Gbps effective. The Arc G3 Extreme starts at 300 MHz base and reaches 2500 MHz boost. The much higher boost clock on the Intel part partially compensates for its smaller shader array, though the raw throughput gap remains substantial.

Shader resources show the scale difference. The MI300 contains 14,080 shading units and 880 TMUs, with zero ROPs. The Arc G3 Extreme has 1,536 shading units, 48 TMUs, and 24 ROPs, plus 12 dedicated ray tracing cores. The AMD part has no listed RT cores, while the Intel part includes them. The API support also diverges: the MI300 lists N/A for DirectX, OpenGL, and Vulkan, indicating no graphics API support, whereas the Arc G3 Extreme supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4.

Power requirements reflect their intended roles. The MI300 draws a 600 W TDP with 2x 8-pin power connectors and a suggested 1000 W PSU. The Arc G3 Extreme has an 80 W TDP, no power connectors, and no suggested PSU, as it is an IGP with the slot width listed as IGP and the bus interface as IGP. Physical dimensions exist only for the MI300 at 267 mm by 111 mm, while the Arc G3 Extreme lists no dimensions.

FAQ

Q: Which product has higher FP32 compute performance?

A: The AMD Instinct MI300 delivers 47.87 TFLOPS of FP32, which is approximately 6.2 times higher than the Intel Arc G3 Extreme's 7.680 TFLOPS.

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

A: Yes, the Arc G3 Extreme includes 12 ray tracing cores and supports DirectX 12 Ultimate (12_2). The AMD Instinct MI300 has no listed RT cores and no DirectX support.

Q: How much memory does each product use?

A: The AMD Instinct MI300 has 128 GB of HBM3 on an 8192-bit bus with 5.32 TB/s bandwidth. The Intel Arc G3 Extreme uses System Shared memory with System Dependent bandwidth.

Q: What is the power draw for each product?

A: The AMD Instinct MI300 has a 600 W TDP with 2x 8-pin connectors. The Intel Arc G3 Extreme has an 80 W TDP with no power connectors.

Q: Which process node does each chip use?

A: The AMD Instinct MI300 uses TSMC's 5 nm process. The Intel Arc G3 Extreme uses Intel's 3 nm process.

Q: Are these products comparable in terms of graphics output?

A: No. The AMD Instinct MI300 has no display outputs and no graphics API support. The Intel Arc G3 Extreme has Portable Device Dependent display outputs and supports DirectX, OpenGL, and Vulkan.

The Verdict

The data indicates these are not competing products in the same market segment. The AMD Instinct MI300 is a compute accelerator with no graphics outputs, no ROPs, and no graphics API support, designed for server or workstation compute workloads. Its 128 GB of HBM3 and 5.32 TB/s bandwidth, combined with 47.87 TFLOPS FP32, position it for memory-intensive and compute-heavy tasks.

The Intel Arc G3 Extreme is an integrated graphics processor for portable devices, as indicated by its IGP slot width, IGP bus interface, and Portable Device Dependent display outputs. Its 80 W TDP, 12 RT cores, and DirectX 12 Ultimate support make it suitable for graphics rendering in mobile systems, though its 7.680 TFLOPS FP32 and System Shared memory place it far below the MI300 in raw compute throughput.

The MI300 wins on every compute throughput metric except pixel rate, where it has no capability. Its texture rate of 1,496.0 GTexel/s is 12.5 times higher than the Arc G3 Extreme's 120.0 GTexel/s. The MI300 also leads in memory capacity and bandwidth by orders of magnitude, though the Arc G3 Extreme's system-shared approach is appropriate for integrated graphics.

The Intel part offers features the AMD accelerator lacks entirely: ray tracing cores, graphics API support, and display outputs. The MI300's API fields are all N/A, confirming it is not intended for any graphics workload. The Arc G3 Extreme's 60.00 GPixel/s pixel rate, despite being far lower than any discrete GPU, represents functionality the MI300 simply does not have.

The choice depends strictly on workload. Compute acceleration with massive memory bandwidth points to the MI300. Graphics rendering in a portable device points to the Arc G3 Extreme. The MI300's 600 W TDP and 1000 W suggested PSU require substantial power infrastructure, while the Arc G3 Extreme's 80 W TDP and no connectors fit mobile constraints. The MI300 released on 2023-01-03, while the Arc G3 Extreme's release date is 2026-05-31, indicating different product lifecycles as well.

Specification Differences

| Specification | AMD Instinct MI300 | Intel Arc G3 Extreme |

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

| Chip | Aqua Vanjaram | Panther Lake |

| Architecture | CDNA 3.0 | Xe3-LPG |

| Generation | Instinct (MIx) | Arc Graphics-M (Panther Lake) |

| Process Node | 5 nm | 3 nm |

| Foundry | TSMC | Intel |

| Transistors | 153,000 million | unknown |

| Die Size | 1017 mm² | unknown |

| Transistor Density | 150.4M / mm² | null |

| Base Clock | 1000 MHz | 300 MHz |

| Boost Clock | 1700 MHz | 2500 MHz |

| Memory Clock | 1300 MHz 5.2 Gbps effective | System Shared |

| Memory Size | 128 GB | System Shared |

| Memory Type | HBM3 | System Shared |

| Memory Bus Width | 8192 bit | System Shared |

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

| Shading Units | 14080 | 1536 |

| TMUs | 880 | 48 |

| ROPs | 0 | 24 |

| RT Cores | null | 12 |

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

| Texture Rate | 1,496.0 GTexel/s | 120.0 GTexel/s |

| FP32 | 47.87 TFLOPS | 7.680 TFLOPS |

| FP16 | 47.87 TFLOPS (1:1) | 15.36 TFLOPS (2:1) |

| TDP | 600 W | 80 W |

| Power Connectors | 2x 8-pin | None |

| Suggested PSU | 1000 W | null |

| 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 |

| Length | 267 mm 10.5 inches | null |

| Height | 111 mm 4.4 inches | null |

| Production Status | null | Active |

| Release Date | 2023-01-03 | 2026-05-31 |