AMD Instinct MI455X vs Intel Arc Pro B60 Comparison

Where Each One Wins

The AMD Instinct MI455X and Intel Arc Pro B60 occupy entirely different positions in the benchmark database, and the recorded data reflects that separation clearly. The MI455X has no benchmark entries, an average score of 0, and sits at the 50th percentile among all GPUs. In contrast, the Arc Pro B60 has eight recorded benchmark scores, an average of 3182, and sits at the 20th percentile. These are not competing products in any practical sense; they serve different workloads, and the database shows no head-to-head benchmark wins for either side (0 wins each).

Where the Arc Pro B60 wins is in measured, reproducible performance across standard graphics workloads. Its strongest result is in Passmark G3D with 14580 points, followed by Passmark GPU Compute with 7029 points. The 3DMark Steel Nomad DX12 test yields 2646 points. These numbers place the Arc Pro B60 in a specific competitive band: it is 0.6% ahead of the NVIDIA Quadro P1000 (avg score 3163), 3.5% ahead of the NVIDIA GeForce RTX 5080 SUPER (avg score 3075), and within 0.9% of the NVIDIA GeForce GT 640 (avg score 3210). The database also shows it trailing the NVIDIA GeForce 920M by 3.2% (avg score 3287). This is a mid-range professional card with modest but consistent scores.

The MI455X, by contrast, wins in the categories that matter for compute-density deployments: memory capacity, memory bandwidth, shading unit count, and raw FP32 throughput. The database records 432 GB of HBM4 memory, 23.3 TB/s of bandwidth, 32768 shading units, and 157.3 TFLOPS FP32 performance. These are not benchmark scores, but they define the hardware's capability envelope. The MI455X is a 2300 W EAM module with no display outputs and no API support, which means it is not designed to run the same tests as the Arc Pro B60. Its 50th percentile ranking despite zero benchmarks indicates the database treats it as a distinct class of device, not a direct competitor to consumer or prosumer graphics cards.

The practical split is clear: the Arc Pro B60 wins on every measurable benchmark where a standard graphics workload can run, while the MI455X wins on raw hardware specifications that no benchmark in this dataset can exercise. The Arc Pro B60 can render, output video through its 4x mini-DisplayPort 2.1 connectors, and run DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.4 applications. The MI455X cannot do any of those things. For anyone evaluating these two cards side by side, the decision is not about which performs better; it is about which workload category applies.

Architecture Differences

The two GPUs come from different architectural lineages with fundamentally different design goals. The AMD Instinct MI455X uses the CDNA 5.0 architecture, built on the MI450 256CU chip, fabricated by TSMC on a 2 nm process. The die measures 2990 mm² and contains 320,000 million transistors, yielding a transistor density of 107.0M per mm². This is a compute-optimized design with no rendering pipeline: pixel rate is 0 MPixel/s, texture rate is 2,457.6 GTexel/s, and there are no ROPs, RT cores, or tensor cores listed. The architecture is purely oriented toward massive parallel compute.

The Intel Arc Pro B60 uses the Xe2-HPG architecture, built on the BMG-G21 chip, also fabricated by TSMC but on a 5 nm process. The die is 272 mm² with 19,600 million transistors, giving a density of 72.1M per mm². This is a graphics-first design with a full rendering pipeline: 80 ROPs, 20 RT cores, 160 TMUs, and 2560 shading units. Its pixel rate is 192.0 GPixel/s and texture rate is 384.0 GTexel/s. The Xe2-HPG architecture supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4, which the CDNA 5.0 architecture does not support at all.

Memory architecture differs sharply. The MI455X uses HBM4 with a 24576-bit bus and 432 GB capacity, delivering 23.3 TB/s of bandwidth. The Arc Pro B60 uses GDDR6 with a 192-bit bus and 24 GB capacity, delivering 456.0 GB/s. The memory clock difference is notable: the MI455X runs at 1900 MHz (7.6 Gbps effective) while the Arc Pro B60 runs at 2375 MHz (19 Gbps effective). The HBM4 stack on the MI455X provides nearly 51 times the bandwidth of the GDDR6 on the Arc Pro B60, but the GDDR6 clock is 2.5 times higher in effective data rate.

Compute capabilities diverge as well. The MI455X has 32768 shading units and 1024 TMUs, with FP32 and FP16 both rated at 157.3 TFLOPS (1:1 ratio). The Arc Pro B60 has 2560 shading units and 160 TMUs, with FP32 at 12.29 TFLOPS and FP16 at 24.58 TFLOPS (2:1 ratio). The MI455X provides 12.8 times the FP32 throughput and 6.4 times the FP16 throughput. The power envelope reflects this: the MI455X is rated at 2300 W with a suggested PSU of 2700 W, while the Arc Pro B60 is rated at 200 W with a suggested PSU of 550 W. The MI455X uses no power connectors (it is an EAM module), while the Arc Pro B60 uses a single 8-pin connector.

FAQ

Q: Which GPU has higher memory bandwidth?

A: The AMD Instinct MI455X has 23.3 TB/s of bandwidth from its 432 GB HBM4 memory on a 24576-bit bus. The Intel Arc Pro B60 has 456.0 GB/s from 24 GB GDDR6 on a 192-bit bus.

Q: Can the AMD Instinct MI455X run DirectX or Vulkan applications?

A: No. The database lists DirectX, OpenGL, and Vulkan as N/A for the MI455X. The Intel Arc Pro B60 supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4.

Q: What is the FP32 performance difference between the two?

A: The MI455X delivers 157.3 TFLOPS FP32, while the Arc Pro B60 delivers 12.29 TFLOPS FP32. The MI455X provides 12.8 times the FP32 throughput.

Q: How does the Arc Pro B60 compare to its nearest rivals in the database?

A: The Arc Pro B60 has an average benchmark score of 3182. It is 0.6% ahead of the NVIDIA Quadro P1000 (3163), 3.5% ahead of the NVIDIA GeForce RTX 5080 SUPER (3075), 0.9% behind the NVIDIA GeForce GT 640 (3210), and 3.2% behind the NVIDIA GeForce 920M (3287).

Q: What is the physical size difference?

A: The MI455X is an EAM module with no listed dimensions. The Arc Pro B60 is a dual-slot card measuring 167 mm in length, 69 mm in height, and 40 mm in width.

Q: What are the power requirements?

A: The MI455X has a TDP of 2300 W and a suggested PSU of 2700 W, with no power connectors. The Arc Pro B60 has a TDP of 200 W and a suggested PSU of 550 W, using a single 8-pin connector.

Specification Differences

| Specification | AMD Instinct MI455X | Intel Arc Pro B60 |

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

| Architecture | CDNA 5.0 | Xe2-HPG |

| Chip | MI450 256CU | BMG-G21 |

| Process node | 2 nm | 5 nm |

| Foundry | TSMC | TSMC |

| Transistors | 320,000 million | 19,600 million |

| Die size | 2990 mm² | 272 mm² |

| Transistor density | 107.0M / mm² | 72.1M / mm² |

| Base clock | 1000 MHz | 2000 MHz |

| Boost clock | 2400 MHz | 2400 MHz |

| Memory clock | 1900 MHz (7.6 Gbps effective) | 2375 MHz (19 Gbps effective) |

| Memory size | 432 GB | 24 GB |

| Memory type | HBM4 | GDDR6 |

| Memory bus width | 24576 bit | 192 bit |

| Memory bandwidth | 23.3 TB/s | 456.0 GB/s |

| Shading units | 32768 | 2560 |

| TMUs | 1024 | 160 |

| ROPs | 0 | 80 |

| RT cores | None listed | 20 |

| Pixel rate | 0 MPixel/s | 192.0 GPixel/s |

| Texture rate | 2,457.6 GTexel/s | 384.0 GTexel/s |

| FP32 | 157.3 TFLOPS | 12.29 TFLOPS |

| FP16 | 157.3 TFLOPS (1:1) | 24.58 TFLOPS (2:1) |

| TDP | 2300 W | 200 W |

| Slot width | EAM Module | Dual-slot |

| Power connectors | None | 1x 8-pin |

| Suggested PSU | 2700 W | 550 W |

| Bus interface | PCIe 6.0 x16 | PCIe 5.0 x8 |

| Display outputs | No outputs | 4x mini-DisplayPort 2.1 |

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

| OpenGL | N/A | 4.6 |

| Vulkan | N/A | 1.4 |

| Dimensions | Not listed | 167 mm x 69 mm x 40 mm |

| Release date | 2026-07-22 | 2025-09-04 |

| Production status | Not listed | Active |

| Launch MSRP | None listed | 499 USD |

Head-to-Head Benchmarks

The database contains no head-to-head benchmark entries for these two GPUs, and the MI455X has zero recorded benchmarks. The Arc Pro B60 therefore holds every measurable benchmark win by default, but the comparison is not meaningful without a common test workload. The MI455X cannot run the same tests because it has no API support and no display outputs.

The Arc Pro B60's benchmark scores provide the only numerical performance data in this comparison. Its highest score is 14580 in Passmark G3D, which is the aggregate graphics benchmark. The Passmark GPU Compute score of 7029 indicates compute workloads run at roughly half the G3D rate. The DirectX-specific scores are lower: Passmark DirectX 12 scores 76, DirectX 11 scores 122, and DirectX 10 scores 61. The DirectX 9 score is 179, which is the highest of the four DirectX tests. The Passmark G2D score of 763 reflects 2D graphics performance, and the 3DMark Steel Nomad DX12 score of 2646 is the only modern 3D test recorded.

Relative to its nearest rivals, the Arc Pro B60's performance is tightly clustered. Its average score of 3182 is within 3.5% of all four rivals listed in the database. The NVIDIA Quadro P1000 is the closest at 0.6% behind, and the NVIDIA GeForce 920M is the furthest at 3.2% ahead. The GeForce RTX 5080 SUPER sits 3.5% behind the Arc Pro B60, which is a surprising result given the naming hierarchy, but the database records the scores as-is.

For the MI455X, the only measurable data points are its specification-level capabilities. The FP32 throughput of 157.3 TFLOPS exceeds the Arc Pro B60's 12.29 TFLOPS by a factor of 12.8. The FP16 performance of 157.3 TFLOPS (1:1) on the MI455X doubles the Arc Pro B60's FP16 rate of 24.58 TFLOPS (2:1) by 6.4 times. Memory bandwidth of 23.3 TB/s on the MI455X is 51.1 times the Arc Pro B60's 456.0 GB/s. Texture rate on the MI455X is 2,457.6 GTexel/s versus 384.0 GTexel/s on the Arc Pro B60, a 6.4 times advantage. These are large margins, but they exist only in the specification sheet, not in any executed benchmark.

The percentile rankings summarize the situation. The MI455X sits at the 50th percentile among all GPUs with an average score of 0, which means the database has no performance evidence for it. The Arc Pro B60 sits at the 20th percentile with an average score of 3182, which places it in the lower-middle range of all recorded GPUs. Neither card is a top performer by percentile, but the Arc Pro B60 at least has verified results. The MI455X is a specification-heavy device whose actual performance remains unmeasured in this dataset.