AMD Instinct MI355X vs Intel Arc G3 Comparison

Head-to-Head Benchmarks

The recorded data shows no benchmark entries in the database for either the AMD Instinct MI355X or the Intel Arc G3. Both parts have an average benchmark score of zero, and both sit at the 50th percentile among all GPUs tracked by the database. This makes direct performance comparison impossible from the measurements currently available. The Instinct MI355X and the Arc G3 occupy completely different performance tiers, as a look at their raw specifications confirms, but without recorded benchmark runs, a head-to-head score comparison cannot be constructed.

What the data does indicate is a massive compute gap between the two. The Instinct MI355X delivers 78.64 TFLOPS of FP32 performance, while the Arc G3 delivers 6.144 TFLOPS. That puts the AMD part at roughly 12.8 times the FP32 throughput of the Intel part, a calculation derived directly from the figures in the database. In FP16, the MI355X again shows 78.64 TFLOPS at a 1:1 ratio, whereas the Arc G3 reaches 12.29 TFLOPS at a 2:1 ratio. The AMD accelerator is ahead by a factor of about 6.4 in FP16. Texture rate tells a similar story: the MI355X manages 2,457.6 GTexel/s, while the Arc G3 manages 96.00 GTexel/s, a difference of roughly 25.6 times. Pixel rate is the one area where the Intel part has a defined figure, 48.00 GPixel/s; the AMD part lists 0 MPixel/s, as it has no ROPs and no display output capability.

FAQ

Q: Which GPU has the higher FP32 compute rating?

A: The AMD Instinct MI355X is rated at 78.64 TFLOPS FP32, compared to 6.144 TFLOPS for the Intel Arc G3. The AMD accelerator is roughly 12.8 times higher in this metric.

Q: Do both GPUs use the same manufacturing process?

A: Both are built on a 3 nm process, but they use different foundries. The Instinct MI355X is fabricated by TSMC, while the Arc G3 is fabricated by Intel.

Q: What memory configurations do the two parts use?

A: The Instinct MI355X has 288 GB of HBM3e memory on an 8192 bit bus, with 8.19 TB/s of bandwidth. The Arc G3 uses System Shared memory, with System Shared type, bus width, and System Dependent bandwidth.

Q: Which GPU has a higher boost clock?

A: Both parts list a boost clock of 2400 MHz. Their base clocks differ: the MI355X runs at 1000 MHz, while the Arc G3 runs at 300 MHz.

Q: Do either of these GPUs support DirectX, OpenGL, or Vulkan?

A: The Intel Arc G3 supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The AMD Instinct MI355X lists N/A for DirectX, OpenGL, and Vulkan, reflecting its lack of display outputs and consumer graphics API support.

Q: What are the power requirements for each card?

A: The Instinct MI355X has a TDP of 1400 W and a suggested PSU of 1800 W. The Arc G3 has a TDP of 25 W and no suggested PSU listed.

Architecture Differences

The AMD Instinct MI355X uses the CDNA 4.0 architecture, built around a chip labeled MI350 256CU. It contains 185,000 million transistors on a 2380 mm² die, giving a transistor density of 77.7M per mm². The chip has 16,384 shading units, 1,024 TMUs, and zero ROPs. It provides no ray tracing cores and no tensor core count is listed. Its memory subsystem uses 288 GB of HBM3e across an 8192 bit bus, with memory clocked at 2000 MHz and 8 Gbps effective. The FP16 rate is 78.64 TFLOPS at a 1:1 ratio with FP32, indicating no FP16 acceleration beyond the FP32 rate. The card uses an OAM Module slot width, has no power connectors, and requires a suggested PSU of 1800 W. It has no display outputs, and its API support is listed as N/A for DirectX, OpenGL, and Vulkan. The bus interface is PCIe 5.0 x16. Its dimensions are 102 mm in length and 165 mm in width. The release date is 2025-06-11, and its predecessor is listed as Radeon Instinct.

The Intel Arc G3 uses the Xe3-LPG architecture, based on the Panther Lake chip. It has 1,280 shading units, 40 TMUs, and 20 ROPs, along with 10 ray tracing cores. No tensor core count is listed. Memory is System Shared, meaning size, type, and bus width all depend on the host system, and bandwidth is System Dependent. The FP16 rate is 12.29 TFLOPS at a 2:1 ratio, which indicates that FP16 throughput is double the FP32 rate. The Arc G3 is an IGP, integrated into a Panther Lake processor, with a 25 W TDP and no power connectors. It supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. Its display outputs are listed as Portable Device Dependent. The bus interface is also IGP. The production status is Active, and its release date is 2026-05-31.

The architectural split is clear. The MI355X is a discrete accelerator with no graphics API support, designed for pure compute workloads with a massive memory pool. The Arc G3 is an integrated graphics processor with full consumer API support, built for portable devices with dependent display outputs. The MI355X uses a 2380 mm² die with 185,000 million transistors; the Arc G3 has unknown transistor count and die size. Both parts share a 3 nm process node, but the foundry differs. The MI355X's texture rate of 2,457.6 GTexel/s versus the Arc G3's 96.00 GTexel/s reflects the huge difference in TMU count: 1,024 versus 40.

The Verdict

The data points to two completely different products with no overlap in use case. The AMD Instinct MI355X is an accelerator with 288 GB of HBM3e memory, 8.19 TB/s of bandwidth, and 78.64 TFLOPS FP32. It has no display outputs, no graphics API support, and a 1400 W TDP. The Intel Arc G3 is an integrated GPU with 25 W TDP, System Shared memory, and full DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.4 support. It has 10 ray tracing cores, which the MI355X lacks entirely. Anyone needing raw compute throughput, large memory capacity, or extreme memory bandwidth should choose the MI355X. Anyone needing a low-power integrated graphics solution with modern API support and ray tracing for a portable device should choose the Arc G3. The benchmark data is empty for both, so the decision rests entirely on the specification differences documented in the database.

Specification Differences

| Specification | AMD Instinct MI355X | Intel Arc G3 |

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

| Architecture | CDNA 4.0 | Xe3-LPG |

| Chip | MI350 256CU | Panther Lake |

| Foundry | TSMC | Intel |

| Process Node | 3 nm | 3 nm |

| Transistors | 185,000 million | unknown |

| Die Size | 2380 mm² | unknown |

| Transistor Density | 77.7M / mm² | null |

| Base Clock | 1000 MHz | 300 MHz |

| Boost Clock | 2400 MHz | 2400 MHz |

| Memory Size | 288 GB | System Shared |

| Memory Type | HBM3e | System Shared |

| Memory Bus Width | 8192 bit | System Shared |

| Memory Bandwidth | 8.19 TB/s | System Dependent |

| Shading Units | 16,384 | 1,280 |

| TMUs | 1,024 | 40 |

| ROPs | 0 | 20 |

| Ray Tracing Cores | null | 10 |

| Pixel Rate | 0 MPixel/s | 48.00 GPixel/s |

| Texture Rate | 2,457.6 GTexel/s | 96.00 GTexel/s |

| FP32 | 78.64 TFLOPS | 6.144 TFLOPS |

| FP16 | 78.64 TFLOPS (1:1) | 12.29 TFLOPS (2:1) |

| TDP | 1400 W | 25 W |

| Slot Width | OAM Module | IGP |

| Power Connectors | None | None |

| Suggested PSU | 1800 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 |

| Release Date | 2025-06-11 | 2026-05-31 |

| Production Status | null | Active |

| Predecessor | Radeon Instinct | null |

Where Each One Wins

The AMD Instinct MI355X wins in every raw compute category. It has more shading units (16,384 versus 1,280), more TMUs (1,024 versus 40), and a much higher texture rate (2,457.6 GTexel/s versus 96.00 GTexel/s). Its FP32 rating of 78.64 TFLOPS is about 12.8 times that of the Arc G3. Its FP16 rating of 78.64 TFLOPS is about 6.4 times the Arc G3's 12.29 TFLOPS. It has 288 GB of dedicated HBM3e memory with 8.19 TB/s bandwidth, compared to the Arc G3's System Shared memory with System Dependent bandwidth. It runs on a PCIe 5.0 x16 interface, whereas the Arc G3 is an IGP. Its base clock is higher at 1000 MHz versus 300 MHz, and both parts boost to 2400 MHz. The MI355X also has a larger die at 2380 mm² with 185,000 million transistors, though the Arc G3's die size and transistor count are unknown.

The Intel Arc G3 wins in graphics and integration features. It has 20 ROPs and a pixel rate of 48.00 GPixel/s; the MI355X has zero ROPs and a pixel rate of 0 MPixel/s. The Arc G3 has 10 ray tracing cores; the MI355X has none listed. The Arc G3 supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4; the MI355X lists N/A for all three. The Arc G3 has display outputs (Portable Device Dependent), while the MI355X has no outputs. The Arc G3's TDP is 25 W, which is 56 times lower than the MI355X's 1400 W, and it requires no suggested PSU. Both use the same 3 nm process, and both have no power connectors.

For use-case splits, the data supports the following: the MI355X is suited for compute-heavy workloads that need massive memory capacity and bandwidth, high FP32 and FP16 throughput, and no display or graphics API support. The Arc G3 is suited for portable devices where low power, integrated graphics, ray tracing, and full consumer API compatibility are required. The Arc G3 is the only one of the two with a production status listed as Active, and it is the only one with a defined graphics pipeline. The MI355X has no benchmark scores recorded, and the Arc G3 has no benchmark scores recorded, so neither part can claim a measured performance win from the database. The specification data alone establishes the separation.