AMD Instinct MI300X vs Intel Arc Pro B65 Comparison

Head-to-Head Benchmarks

The database contains a single recorded benchmark for the AMD Instinct MI300X, the Geekbench OpenCL test, where it scores 317,994 points. This result places the Instinct MI300X at the 100th percentile among all GPUs in the database, indicating it outperforms every other recorded device in this workload. The Intel Arc Pro B65 has no recorded benchmark scores in the database, so no direct head-to-head comparison can be made from measured data. The Arc Pro B65 sits at the 50th percentile, but this is a default placement given the absence of any test results, not a reflection of measured performance.

The Instinct MI300X’s score of 317,994 can be contextualized against its nearest rivals in the database. The NVIDIA H200 NVL leads with an average score of 334,891, which is 5% ahead of the Instinct MI300X. The NVIDIA B200 posts 345,482, an 8% advantage. Conversely, the Instinct MI300X sits ahead of the NVIDIA L40S, which scores 295,763, by 7.5%, and ahead of the NVIDIA RTX 6000 Ada Generation, which scores 287,237, by 10.7%. These deltas show a tightly clustered group at the top of the database, where the Instinct MI300X is competitive but not the absolute leader.

Because the Arc Pro B65 has no benchmarks, there are zero wins recorded for either product in the head-to-head comparison table. The data cannot establish a performance hierarchy between these two specific products. What can be stated is that the Instinct MI300X is a top-tier compute device by the one recorded metric, while the Arc Pro B65 remains unmeasured.

Where Each One Wins

The absence of benchmark data for the Intel Arc Pro B65 means it cannot claim a win in any recorded test. Its capabilities must be inferred from its architectural specifications rather than measured outcomes. The AMD Instinct MI300X wins the only recorded benchmark by default, as it is the sole product with a score.

For use-case analysis, the hardware specifications in the database dictate the likely strengths of each product. The Instinct MI300X offers 192 GB of HBM3 memory with a 8192-bit bus and 5.32 TB/s bandwidth. This configuration is suited for large memory-resident workloads, such as training or inference on massive models, where capacity and bandwidth are critical. The Arc Pro B65 provides 32 GB of GDDR6 memory on a 256-bit bus with 608.0 GB/s bandwidth, which is a more conventional workstation configuration.

The compute resources differ substantially. The Instinct MI300X has 19,456 shading units, 1,216 texture mapping units, and no raster operations pipelines (0 ROPs), with a texture rate of 2,553.6 GTexel/s and FP32 throughput of 81.72 TFLOPS. The Arc Pro B65 has 2,560 shading units, 160 TMUs, and 80 ROPs, with a texture rate of 384.0 GTexel/s and FP32 performance of 12.29 TFLOPS. The Instinct MI300X also delivers FP16 at 81.72 TFLOPS with a 1:1 ratio, while the Arc Pro B65 provides 24.58 TFLOPS FP16 with a 2:1 ratio, indicating a different throughput balance.

The Arc Pro B65 includes 20 ray tracing cores, a feature absent from the Instinct MI300X’s specification list. It also supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4, whereas the Instinct MI300X lists N/A for all three APIs. The Arc Pro B65 has display outputs (4x DisplayPort 2.1) and a pixel rate of 192.0 GPixel/s, while the Instinct MI300X has no display outputs and a 0 MPixel/s pixel rate. These specifications indicate the Arc Pro B65 is designed for graphical workloads, including rendering and interactive applications, while the Instinct MI300X is a compute-only accelerator.

Architecture Differences

The two products represent divergent architectural philosophies. The AMD Instinct MI300X uses the CDNA 3.0 architecture on the Aqua Vanjaram chip, built on a 5 nm process at TSMC. It integrates 153,000 million transistors on a 1017 mm² die, yielding a transistor density of 150.4 million per mm². The Intel Arc Pro B65 uses the Xe2-HPG architecture on the BMG-G21 chip, also on a 5 nm TSMC process, but with 19,600 million transistors on a 272 mm² die, for a density of 72.1 million per mm². The Instinct MI300X therefore packs over seven times the transistor count into a die nearly four times larger, with more than double the transistor density.

Clock behavior differs. The Instinct MI300X runs at a base clock of 1000 MHz with a boost of 2100 MHz. The Arc Pro B65 operates at a fixed 2400 MHz for both base and boost, which is a higher sustained frequency but on a much smaller compute array. Memory clocks also differ: the Instinct MI300X uses 1300 MHz with 5.2 Gbps effective data rate, while the Arc Pro B65 runs at 2375 MHz with 19 Gbps effective.

Memory architecture is a central differentiator. The Instinct MI300X uses HBM3 with 192 GB capacity, an 8192-bit bus, and 5.32 TB/s bandwidth. The Arc Pro B65 uses GDDR6 with 32 GB capacity, a 256-bit bus, and 608.0 GB/s bandwidth. The bandwidth difference is roughly an order of magnitude, which directly affects memory-bound workloads.

The compute pipelines are organized differently. The Instinct MI300X has 19,456 shading units and 1,216 TMUs, with no ROPs, suggesting a pure compute design where rasterization is not a concern. The Arc Pro B65 has 2,560 shading units, 160 TMUs, and 80 ROPs, which is a traditional graphics pipeline configuration. The Instinct MI300X’s FP32 and FP16 throughput are identical at 81.72 TFLOPS, indicating a 1:1 ratio, while the Arc Pro B65’s FP16 (24.58 TFLOPS) is exactly double its FP32 (12.29 TFLOPS), a 2:1 ratio.

Power and physical specifications differ markedly. The Instinct MI300X has a TDP of 750 W, uses an OAM Module slot width, has no power connectors (implying board-level power delivery), and suggests a 1150 W PSU. The Arc Pro B65 has a 200 W TDP, a dual-slot form factor, a single 8-pin power connector, and suggests a 550 W PSU. Both use PCIe 5.0 x16 interfaces.

The Instinct MI300X was released on 2023-12-05, while the Arc Pro B65 has a release date of 2026-03-31, indicating a later market introduction. The Instinct MI300X lists Radeon Instinct as its predecessor, while the Arc Pro B65 has no predecessor listed.

FAQ

Q: What is the sole recorded benchmark score for the AMD Instinct MI300X?

A: The Instinct MI300X scores 317,994 in Geekbench OpenCL, placing it at the 100th percentile in the database.

Q: Does the Intel Arc Pro B65 have any benchmark scores in the database?

A: No. The Arc Pro B65 has an empty benchmark list and an average score of 0, with a 50th percentile placement that reflects the absence of data.

Q: How does the Instinct MI300X compare to its nearest rivals in the database?

A: It trails the NVIDIA H200 NVL (334,891, 5% ahead) and NVIDIA B200 (345,482, 8% ahead), but leads the NVIDIA L40S (295,763, 7.5% behind) and NVIDIA RTX 6000 Ada Generation (287,237, 10.7% behind).

Q: What memory configurations do the two products use?

A: The Instinct MI300X uses 192 GB of HBM3 on an 8192-bit bus with 5.32 TB/s bandwidth. The Arc Pro B65 uses 32 GB of GDDR6 on a 256-bit bus with 608.0 GB/s bandwidth.

Q: Does the Arc Pro B65 support graphics APIs?

A: Yes. It supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The Instinct MI300X lists N/A for all three APIs.

Q: What are the TDP and power requirements for each product?

A: The Instinct MI300X has a 750 W TDP with a suggested 1150 W PSU. The Arc Pro B65 has a 200 W TDP with a suggested 550 W PSU and a single 8-pin power connector.

The Verdict

The recorded data supports a clear but limited conclusion. The AMD Instinct MI300X is a high-performance compute accelerator, evidenced by its 317,994 Geekbench OpenCL score and 100th percentile placement. Its 192 GB HBM3 memory and 5.32 TB/s bandwidth, combined with 81.72 TFLOPS FP32 and FP16 throughput, make it suitable for large-scale compute tasks where memory capacity and bandwidth are decisive. The absence of display outputs and graphics API support confirms a compute-only role.

The Intel Arc Pro B65 has no measured performance data, so its position in the database is unverified. Its specifications indicate a different purpose: 32 GB GDDR6 memory, 80 ROPs, 20 ray tracing cores, display outputs, and full graphics API support point to a workstation graphics card rather than a pure compute device. Its 200 W TDP and dual-slot form factor are consistent with a conventional add-in card.

For a user selecting between these two products based strictly on database records, the choice depends on the workload type. The Instinct MI300X is the only one with a benchmark score, and that score indicates top-tier compute capability. The Arc Pro B65 cannot be benchmarked from available data, so any performance claim for it would be speculative. The data shows the Instinct MI300X as the measured performer, while the Arc Pro B65 remains an unquantified graphics-oriented alternative.