AMD Radeon Instinct MI300A vs Intel Arc Pro B65 Comparison

Head-to-Head Benchmarks

The recorded data for these two accelerators contains no shared benchmark results, so a direct performance comparison cannot be quantified. The database shows an average benchmark score of zero for both the AMD Radeon Instinct MI300A and the Intel Arc Pro B65, placing each at the 50th percentile among all GPUs in the database. Without head-to-head test scores, the performance relationship between the two is defined entirely by their architectural specifications and feature sets.

The AMD part delivers 81.72 TFLOPS of FP32 compute and 653.7 TFLOPS of FP16 with an 8:1 ratio. The Intel part provides 12.29 TFLOPS of FP32 and 24.58 TFLOPS of FP16 at a 2:1 ratio. In raw compute throughput, the AMD accelerator is roughly 6.6 times higher in FP32 and approximately 26.6 times higher in FP16. Texture rate follows a similar pattern: the AMD unit reaches 2,553.6 GTexel/s, while the Intel unit reaches 384.0 GTexel/s, a factor of about 6.65. Pixel rate is the one area where Intel leads, as the Arc Pro B65 delivers 192.0 GPixel/s, while the MI300A reports 0 MPixel/s due to its lack of raster output units.

Memory bandwidth heavily favors AMD, with 10.3 TB/s from HBM3 across an 8192-bit bus, versus 608.0 GB/s from GDDR6 on a 256-bit bus for Intel. That is a bandwidth advantage of roughly 17 times for the AMD part. Capacity also differs substantially: 192 GB versus 32 GB. The Intel card has 80 ROPs and 20 ray tracing cores, while the AMD card lists zero ROPs and no ray tracing cores, indicating a pure compute-oriented design rather than a graphics-oriented one.

Architecture Differences

The AMD Radeon Instinct MI300A uses the CDNA 3.0 architecture implemented on the Aqua Vanjaram chip, manufactured on a 5 nm process at TSMC. The Intel Arc Pro B65 uses the Xe2-HPG architecture on the BMG-G21 chip, also fabricated on a 5 nm process at TSMC. Both share the same process node and foundry, but the transistor counts diverge sharply. The AMD chip integrates 153,000 million transistors on a 1017 mm² die, yielding a density of 150.4 million transistors per square millimeter. The Intel chip contains 19,600 million transistors on a 272 mm² die, with a density of 72.1 million per square millimeter. The AMD die is about 3.7 times larger in area and holds roughly 7.8 times more transistors.

The MI300A belongs to the Radeon Instinct (MIx) generation and lists its predecessor as FirePro Data Center. The Arc Pro B65 belongs to the Battlemage (Pro Series) generation and has no recorded predecessor. The Intel part is marked as Active in production status, while the AMD part has no recorded production status. Release dates differ by over two years: the MI300A launched on December 5, 2023, and the Arc Pro B65 is dated March 31, 2026.

Shading unit counts reflect the different design goals. The AMD accelerator carries 19,456 shading units and 1,216 texture mapping units. The Intel accelerator carries 2,560 shading units and 160 texture mapping units. The AMD part has no raster output units, while the Intel part has 80. The AMD part reports no ray tracing cores, while the Intel part includes 20. Neither part lists a dedicated tensor core count in the database.

Clock behavior also differs. The MI300A has a base clock of 1000 MHz and a boost clock of 2100 MHz. The Arc Pro B65 runs at a fixed 2400 MHz for both base and boost. Memory clocks are similar in frequency but different in effective speed: the AMD memory runs at 2525 MHz with 10.1 Gbps effective, while the Intel memory runs at 2375 MHz with 19 Gbps effective. The GDDR6 implementation on Intel achieves double the effective data rate per pin, but the massive bus width on AMD overwhelms that advantage.

FAQ

Q: Which accelerator has higher FP32 compute performance?

A: The AMD Radeon Instinct MI300A delivers 81.72 TFLOPS of FP32, which is approximately 6.6 times the 12.29 TFLOPS provided by the Intel Arc Pro B65.

Q: How do the memory subsystems compare?

A: The AMD part uses 192 GB of HBM3 on an 8192-bit bus, achieving 10.3 TB/s of bandwidth. The Intel part uses 32 GB of GDDR6 on a 256-bit bus, achieving 608.0 GB/s. AMD has roughly 17 times the bandwidth and 6 times the capacity.

Q: Does either card support ray tracing?

A: The Intel Arc Pro B65 lists 20 ray tracing cores. The AMD Radeon Instinct MI300A lists no ray tracing cores, showing that it is not designed for real-time ray-traced graphics.

Q: What are the power requirements for each card?

A: The AMD MI300A has a TDP of 750 W and a suggested PSU rating of 1150 W, with no power connectors on the OAM module. The Intel Arc Pro B65 has a TDP of 200 W, a suggested PSU rating of 550 W, and uses a single 8-pin connector.

Q: Which card has display outputs?

A: The Intel Arc Pro B65 provides 4x DisplayPort 2.1 outputs. The AMD MI300A has no display outputs, indicating it is intended for compute workloads rather than direct display output.

Q: What API support does each card offer?

A: The Intel card supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The AMD card lists no DirectX, OpenGL, or Vulkan support in the database, consistent with its compute-focused role.

Specification Differences

| Specification | AMD Radeon Instinct MI300A | Intel Arc Pro B65 |

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

| Architecture | CDNA 3.0 | Xe2-HPG |

| Process Node | 5 nm | 5 nm |

| Transistors | 153,000 million | 19,600 million |

| Die Size | 1017 mm² | 272 mm² |

| Transistor Density | 150.4M / mm² | 72.1M / mm² |

| Base Clock | 1000 MHz | 2400 MHz |

| Boost Clock | 2100 MHz | 2400 MHz |

| Memory Size | 192 GB | 32 GB |

| Memory Type | HBM3 | GDDR6 |

| Memory Bus Width | 8192 bit | 256 bit |

| Memory Bandwidth | 10.3 TB/s | 608.0 GB/s |

| Shading Units | 19,456 | 2,560 |

| TMUs | 1,216 | 160 |

| ROPs | 0 | 80 |

| Ray Tracing Cores | None | 20 |

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

| Texture Rate | 2,553.6 GTexel/s | 384.0 GTexel/s |

| FP32 | 81.72 TFLOPS | 12.29 TFLOPS |

| FP16 | 653.7 TFLOPS (8:1) | 24.58 TFLOPS (2:1) |

| TDP | 750 W | 200 W |

| Slot Width | OAM Module | Dual-slot |

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

| Suggested PSU | 1150 W | 550 W |

| Display Outputs | No outputs | 4x DisplayPort 2.1 |

| DirectX Support | None | 12 Ultimate (12_2) |

| OpenGL Support | None | 4.6 |

| Vulkan Support | None | 1.4 |

| Release Date | 2023-12-05 | 2026-03-31 |

| Production Status | Not recorded | Active |

The Verdict

The data indicates two entirely different device classes. The AMD Radeon Instinct MI300A is a massive compute accelerator with 81.72 TFLOPS FP32, 653.7 TFLOPS FP16, and 10.3 TB/s of memory bandwidth. Its 750 W TDP and OAM form factor with no display outputs place it firmly in data center compute territory. The Intel Arc Pro B65 is a conventional graphics card with 12.29 TFLOPS FP32, 24.58 TFLOPS FP16, 192.0 GPixel/s pixel throughput, ray tracing support, and four DisplayPort 2.1 outputs, all within a 200 W dual-slot design.

The benchmark database records no head-to-head results for these two products, so the verdict rests on architecture and specification. For workloads that demand maximum FP32 or FP16 throughput, the MI300A is overwhelmingly superior. For tasks that require rasterization, ray tracing, display output, or lower power consumption, the Arc Pro B65 is the only viable option. The 5 nm process node is shared, but the AMD chip uses a die over 3.7 times larger to integrate nearly 8 times the transistor count.

The Intel card is the more flexible device in terms of interface, supporting modern graphics APIs and display connections. The AMD card is the more specialized device, trading all graphics features for pure compute density. Users selecting a GPU for machine learning or scientific simulation would look at the MI300A. Users selecting a GPU for workstation graphics, CAD, or media applications would look at the Arc Pro B65.

Where Each One Wins

The AMD Radeon Instinct MI300A wins decisively in compute throughput. Its FP32 result of 81.72 TFLOPS dwarfs the 12.29 TFLOPS of the Intel part, and its FP16 result of 653.7 TFLOPS is more than 26 times the Intel figure. Texture rate of 2,553.6 GTexel/s versus 384.0 GTexel/s reinforces this dominance. Memory bandwidth of 10.3 TB/s versus 608.0 GB/s gives the AMD part a massive advantage in bandwidth-bound kernels. The 192 GB capacity versus 32 GB allows far larger datasets to reside on the accelerator. The 8192-bit memory bus provides a path to sustained throughput that the 256-bit Intel bus cannot match.

The Intel Arc Pro B65 wins in graphics-oriented features and efficiency. It delivers 192.0 GPixel/s of pixel fill rate, while the AMD part delivers none. The 20 ray tracing cores enable hardware-accelerated ray tracing, which the AMD part lacks entirely. Display outputs on the Intel card support direct monitor connection, while the AMD card has none. The Intel card also supports DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.4, while the AMD card lists no API support. Power consumption favors Intel as well: 200 W TDP versus 750 W, with a suggested PSU of 550 W versus 1150 W. The Intel card fits in a standard dual-slot configuration with a single 8-pin power connector, whereas the AMD card uses an OAM module with no standard power connectors.

The production status of the Intel card is recorded as Active, while the AMD card has no recorded production status, suggesting availability differences that may factor into procurement decisions. Release timing also matters: the AMD part launched in December 2023, while the Intel part is dated March 2026. Both cards use TSMC 5 nm, but the AMD chip's transistor density of 150.4M per mm² versus Intel's 72.1M per mm² indicates a fundamentally different design philosophy, one optimized for raw compute scale and the other for balanced functionality.