AMD Instinct MI455X vs Intel Arc Graphics 48EU Mobile Comparison

FAQ

Q: What is the architectural generation of each product?

A: The AMD Instinct MI455X uses the CDNA 5.0 architecture on a 2 nm process from TSMC, while the Intel Arc Graphics 48EU Mobile uses the Xe-LPG architecture on a 10 nm process from Intel.

Q: How much memory does each product have?

A: The AMD Instinct MI455X has 432 GB of HBM4 memory on a 24576 bit bus with 23.3 TB/s bandwidth. The Intel Arc Graphics 48EU Mobile uses System Shared memory with System Dependent bandwidth.

Q: What are the power requirements?

A: The AMD Instinct MI455X has a TDP of 2300 W and a suggested PSU of 2700 W. The Intel Arc Graphics 48EU Mobile has a TDP of 28 W and has no suggested PSU listed.

Q: Which product supports DirectX?

A: Only the Intel Arc Graphics 48EU Mobile supports DirectX 12 (12_1), OpenGL 4.6, and Vulkan 1.4. The AMD Instinct MI455X lists N/A for all graphics APIs.

Q: What are the release dates?

A: The AMD Instinct MI455X has a release date of 2026-07-22, while the Intel Arc Graphics 48EU Mobile was released on 2023-12-13.

Q: What is the slot form factor for each?

A: The AMD Instinct MI455X uses an EAM Module slot width, whereas the Intel Arc Graphics 48EU Mobile is an IGP (integrated graphics processor).

Architecture Differences

The AMD Instinct MI455X and Intel Arc Graphics 48EU Mobile represent opposite ends of the GPU design spectrum. The MI455X is built on the CDNA 5.0 architecture, fabricated at TSMC on a 2 nm process. Its die measures 2990 mm² and contains 320,000 million transistors, yielding a transistor density of 107.0M per mm². The chip is designated MI450 256CU, reflecting a massive 256 compute unit configuration.

The Intel part uses the Xe-LPG architecture on Intel's 10 nm process. It is based on the Meteor Lake chip and belongs to the Arc Graphics-M generation. Intel does not list transistor count, die size, or transistor density for this part in the database, which limits direct comparison of physical scaling. The MI455X has 32768 shading units, 1024 TMUs, and 0 ROPs. The Intel Arc 48EU Mobile has 384 shading units, 24 TMUs, and 8 ROPs. These figures indicate a 85.3x difference in shading unit count and a 42.7x difference in TMU count.

Clock behavior differs sharply. The MI455X runs at a base clock of 1000 MHz with a boost of 2400 MHz, while the Intel part operates at 300 MHz base and 1800 MHz boost. The MI455X has dedicated memory at 1900 MHz (7.6 Gbps effective), whereas the Intel part relies entirely on system shared memory. The MI455X connects via PCIe 6.0 x16, while the Intel Arc 48EU Mobile uses a Ring Bus interface. The MI455X has no display outputs; the Intel part has display outputs described as Portable Device Dependent. The MI455X also lacks any graphics API support, while Intel lists DirectX 12 (12_1), OpenGL 4.6, and Vulkan 1.4.

Head-to-Head Benchmarks

The database records no benchmark scores or head-to-head benchmark results for either product. Both the AMD Instinct MI455X and the Intel Arc Graphics 48EU Mobile have zero benchmark entries, zero wins each, and an average benchmark score of zero. The percentile versus all GPUs is identical at 50 for both parts, which in the database indicates neither has recorded performance data to compare against the broader field.

Without recorded benchmark data, the comparison must rely on the architectural specifications and theoretical throughput figures present in the database. The MI455X delivers an FP32 throughput of 157.3 TFLOPS and FP16 of 157.3 TFLOPS at a 1:1 ratio. The Intel Arc 48EU Mobile delivers 1,382.4 GFLOPS FP32 and 2.765 TFLOPS FP16 at a 2:1 ratio. Converting the Intel FP32 figure to TFLOPS gives approximately 1.38 TFLOPS, which places the MI455X at roughly 113.8x the FP32 throughput of the Intel part. Texture rate follows a similar pattern: the MI455X achieves 2,457.6 GTexel/s versus 43.20 GTexel/s for the Intel part, a 56.9x difference.

Pixel rate is the one metric where the Intel part has a non-zero value: 14.40 GPixel/s, while the MI455X records 0 MPixel/s. This reflects the MI455X having zero ROPs and no display pipeline, a design choice consistent with a compute-oriented accelerator rather than a graphics rendering device. The Intel part, with 8 ROPs, retains a conventional rasterization output stage.

Memory bandwidth shows the largest relative gap. The MI455X provides 23.3 TB/s from 432 GB of HBM4, while the Intel part's bandwidth is System Dependent, meaning it shares the host memory subsystem. The MI455X memory bus width of 24576 bit is a dedicated high-bandwidth path, whereas the Intel part has no dedicated memory bus width listed.

The Verdict

The data indicates two products with fundamentally different purposes. The AMD Instinct MI455X is a compute accelerator with a 2300 W TDP, no display outputs, no graphics API support, and zero ROPs. It is designed for raw computational throughput: 157.3 TFLOPS FP32, 432 GB of HBM4, and 23.3 TB/s of memory bandwidth. Its 2 nm process, 320,000 million transistors, and 2990 mm² die size confirm a data center-class part.

The Intel Arc Graphics 48EU Mobile is an integrated GPU with a 28 W TDP, display outputs, full graphics API support including DirectX 12 (12_1) and Vulkan 1.4, and a conventional rasterization pipeline with 8 ROPs. Its 384 shading units and 24 TMUs target light graphics workloads in mobile systems. Its FP32 performance of 1,382.4 GFLOPS is sufficient for basic rendering tasks but orders of magnitude below the MI455X.

The benchmark data does not settle any performance comparison because no benchmarks exist in the database. However, the specification data makes the intended use cases clear. The MI455X is for compute workloads that need massive parallel throughput and memory capacity. The Intel Arc 48EU Mobile is for graphics output in portable devices. A user selecting between them would choose based on whether they need display output and API support or raw compute density. The MI455X cannot drive a display, and the Intel part cannot approach the MI455X's compute or memory bandwidth. The recorded data offers no scenario where these two products compete directly.

Specification Differences

| Field | AMD Instinct MI455X | Intel Arc Graphics 48EU Mobile |

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

| Architecture | CDNA 5.0 | Xe-LPG |

| Process Node | 2 nm | 10 nm |

| Foundry | TSMC | Intel |

| Transistors | 320,000 million | Not listed |

| Die Size | 2990 mm² | Not listed |

| Transistor Density | 107.0M / mm² | Not listed |

| Base Clock | 1000 MHz | 300 MHz |

| Boost Clock | 2400 MHz | 1800 MHz |

| Memory Size | 432 GB | System Shared |

| Memory Type | HBM4 | System Shared |

| Memory Bus Width | 24576 bit | System Shared |

| Memory Bandwidth | 23.3 TB/s | System Dependent |

| Shading Units | 32768 | 384 |

| TMUs | 1024 | 24 |

| ROPs | 0 | 8 |

| Pixel Rate | 0 MPixel/s | 14.40 GPixel/s |

| Texture Rate | 2,457.6 GTexel/s | 43.20 GTexel/s |

| FP32 | 157.3 TFLOPS | 1,382.4 GFLOPS |

| FP16 | 157.3 TFLOPS (1:1) | 2.765 TFLOPS (2:1) |

| TDP | 2300 W | 28 W |

| Slot Width | EAM Module | IGP |

| Bus Interface | PCIe 6.0 x16 | Ring Bus |

| Display Outputs | No outputs | Portable Device Dependent |

| DirectX | N/A | 12 (12_1) |

| OpenGL | N/A | 4.6 |

| Vulkan | N/A | 1.4 |

| Production Status | Not listed | Active |

| Release Date | 2026-07-22 | 2023-12-13 |

| Predecessor | Radeon Instinct | HD Graphics-M |

Where Each One Wins

The AMD Instinct MI455X wins on every compute-oriented metric in the database. Its FP32 throughput of 157.3 TFLOPS exceeds the Intel part by approximately 113.8x. Its FP16 output of 157.3 TFLOPS at 1:1 ratio compares to the Intel part's 2.765 TFLOPS at 2:1 ratio, a 56.9x advantage. Texture rate of 2,457.6 GTexel/s beats 43.20 GTexel/s by 56.9x. Memory capacity of 432 GB versus System Shared, bandwidth of 23.3 TB/s versus System Dependent, and bus width of 24576 bit versus System Shared all favor the MI455X. The MI455X also has a higher boost clock of 2400 MHz versus 1800 MHz, and a newer release date of 2026-07-22 versus 2023-12-13.

The Intel Arc Graphics 48EU Mobile wins on graphics and integration metrics. It has 8 ROPs versus 0, giving it a pixel rate of 14.40 GPixel/s compared to 0 MPixel/s. It supports DirectX 12 (12_1), OpenGL 4.6, and Vulkan 1.4, while the MI455X lists N/A for all three. The Intel part has display outputs, described as Portable Device Dependent, while the MI455X has no outputs. Its TDP of 28 W versus 2300 W makes it suitable for mobile integration without external power connectors. The Intel part uses a Ring Bus interface and an IGP form factor, and its production status is Active. The MI455X has no production status listed. The Intel part also has a lower base clock of 300 MHz, which contributes to its low power envelope.

The database records no benchmark wins for either product, so the use-case split derives entirely from the specification deltas. The MI455X is the choice for compute-heavy tasks that require massive FP32 or FP16 throughput, large memory pools, and extreme bandwidth. The Intel Arc 48EU Mobile is the choice for systems that need display output, graphics API compatibility, and low power consumption in a compact integrated form factor.