AMD Instinct MI300A vs Intel Arc Pro B65 Comparison

Head-to-Head Benchmarks

The database contains no recorded benchmark scores for either the AMD Instinct MI300A or the Intel Arc Pro B65. Both entries show an average benchmark score of 0, and the head-to-head benchmark table is empty. Consequently, there are no measured wins, losses, or performance deltas to compare directly between these two accelerators. The winsA and winsB counters are both at zero, confirming that no comparative testing data has been logged for this pairing.

What the recorded specifications do allow is a projection of theoretical compute throughput. The AMD Instinct MI300A delivers 61.29 TFLOPS of FP32 performance, while the Intel Arc Pro B65 delivers 12.29 TFLOPS. That is a 49.0 TFLOPS gap in favor of the AMD part, indicating roughly 5x the raw single-precision throughput. In FP16, the Intel Arc Pro B65 reaches 24.58 TFLOPS with a 2:1 ratio, but no FP16 figure is recorded for the AMD accelerator, so a direct comparison there is not possible from the data.

Memory bandwidth shows a similar disparity. The MI300A provides 5.32 TB/s of bandwidth across an 8192-bit HBM3 interface, versus 608.0 GB/s on the Arc Pro B65's 256-bit GDDR6 bus. The AMD part also carries 128 GB of memory, four times the 32 GB found on the Intel card. The MI300A's texture rate is 1,915.2 GTexel/s, while the Arc Pro B65 produces 384.0 GTexel/s. Pixel rate is an outlier: the MI300A records 0 MPixel/s because it has zero ROPs, whereas the Arc Pro B65 delivers 192.0 GPixel/s from its 80 ROPs.

Clock behavior differs substantially. The Intel Arc Pro B65 runs at a flat 2400 MHz for both base and boost, with memory at 2375 MHz (19 Gbps effective). The AMD Instinct MI300A has a 1000 MHz base clock and a 2100 MHz boost clock, with memory at 1300 MHz (5.2 Gbps effective). The AMD part's boost clock is 300 MHz lower than the Intel card's sustained clock, but the massive difference in shading units (14592 versus 2560) and TMUs (912 versus 160) more than compensates in aggregate throughput calculations.

The Verdict

The data points to two entirely different use cases. The AMD Instinct MI300A is a compute-first accelerator with 14592 shading units, 128 GB of HBM3 memory, 5.32 TB/s of bandwidth, and 61.29 TFLOPS of FP32. It has no display outputs, no ROPs, and no graphics API support (DirectX, OpenGL, and Vulkan all read N/A). This is a pure compute device for workloads that scale with massive parallelism and memory capacity.

The Intel Arc Pro B65 is a workstation graphics card with 2560 shading units, 32 GB of GDDR6, 608.0 GB/s of bandwidth, and 12.29 TFLOPS of FP32. It supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4, and it has four DisplayPort 2.1 outputs. With 20 ray tracing cores and 80 ROPs, it is built for rendering, visualization, and graphics-accelerated workflows.

For a system that needs to render frames, drive displays, or run graphics APIs, the Intel Arc Pro B65 is the only option between the two, as the MI300A cannot output video at all. For high-throughput compute, scientific simulation, or large-model inference where memory bandwidth and FP32 density dominate, the MI300A holds every relevant specification advantage. The 750 W TDP of the AMD part versus 200 W for the Intel card also indicates different power delivery requirements, with suggested PSU ratings of 1150 W and 550 W respectively.

Architecture Differences

The AMD Instinct MI300A uses the CDNA 3.0 architecture on the Aqua Vanjaram chip. It is manufactured on a 5 nm process at TSMC, with 153,000 million transistors on a 1017 mm² die. The transistor density calculates to 150.4M per mm². This architecture is part of the Instinct (MIx) generation, succeeding Radeon Instinct. There are no ray tracing cores listed, no tensor cores listed, and no RT or tensor specifications are recorded. The design prioritizes raw compute throughput and memory bandwidth over graphics features.

The Intel Arc Pro B65 uses the Xe2-HPG architecture on the BMG-G21 chip. It is also fabricated on a 5 nm TSMC process, but with 19,600 million transistors on a 272 mm² die, yielding a transistor density of 72.1M per mm². This belongs to the Battlemage (Pro Series) generation. Unlike the AMD part, the Intel architecture includes 20 ray tracing cores, 80 ROPs, and full graphics API support. The production status is recorded as Active, while the AMD part's production status is not specified.

The architectural philosophies diverge sharply. CDNA 3.0 is a compute-focused design with no display pipeline, no graphics API compatibility, and no pixel output capability. Xe2-HPG is a graphics-first architecture with ray tracing hardware, rasterization units, and modern API support including DirectX 12 Ultimate and Vulkan 1.4. The MI300A's 8192-bit memory bus is characteristic of HBM3 integration for bandwidth-bound compute, while the Arc Pro B65's 256-bit GDDR6 bus suits conventional workstation graphics.

Specification Differences

The two accelerators differ in nearly every measurable specification. The AMD Instinct MI300A has 14592 shading units, 912 TMUs, and 0 ROPs. The Intel Arc Pro B65 has 2560 shading units, 160 TMUs, and 80 ROPs. The MI300A has no ray tracing cores; the Arc Pro B65 has 20. The MI300A's FP32 output is 61.29 TFLOPS versus 12.29 TFLOPS for the Intel card. The MI300A's texture rate is 1,915.2 GTexel/s versus 384.0 GTexel/s. Pixel rate is 0 MPixel/s for the AMD part and 192.0 GPixel/s for the Intel part.

Memory specifications show the AMD part with 128 GB of HBM3 on an 8192-bit bus, delivering 5.32 TB/s. The Intel card has 32 GB of GDDR6 on a 256-bit bus, delivering 608.0 GB/s. The MI300A's memory clock is 1300 MHz (5.2 Gbps effective), while the Arc Pro B65's is 2375 MHz (19 Gbps effective). The AMD accelerator's base clock is 1000 MHz and boost is 2100 MHz; the Intel card runs both base and boost at 2400 MHz.

Power and physical specifications differ as well. The MI300A has a 750 W TDP, uses an OAM Module slot width, has no power connectors listed, and requires a suggested PSU of 1150 W. The Arc Pro B65 has a 200 W TDP, uses a Dual-slot form factor, has a single 8-pin power connector, and requires a suggested PSU of 550 W. Both use PCIe 5.0 x16 interfaces. The MI300A has no display outputs; the Arc Pro B65 has four DisplayPort 2.1 outputs.

API support is mutually exclusive. The AMD part lists DirectX, OpenGL, and Vulkan as N/A. The Intel card supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. Release dates are recorded as December 5, 2023 for the MI300A and March 31, 2026 for the Arc Pro B65. Neither device has a recorded launch MSRP, so no pricing information is available from the database.

FAQ

Q: Which accelerator has higher FP32 compute throughput?

A: The AMD Instinct MI300A records 61.29 TFLOPS of FP32 performance, which is 49.0 TFLOPS higher than the Intel Arc Pro B65's 12.29 TFLOPS.

Q: Can the AMD Instinct MI300A drive displays?

A: No. The MI300A has no display outputs and lists DirectX, OpenGL, and Vulkan as N/A. The Intel Arc Pro B65 has four DisplayPort 2.1 outputs and supports all three graphics APIs.

Q: How do the memory capacities compare?

A: The AMD Instinct MI300A has 128 GB of HBM3 memory on an 8192-bit bus with 5.32 TB/s of bandwidth. The Intel Arc Pro B65 has 32 GB of GDDR6 on a 256-bit bus with 608.0 GB/s of bandwidth.

Q: What is the power requirement difference?

A: The MI300A has a 750 W TDP and a suggested PSU of 1150 W. The Arc Pro B65 has a 200 W TDP and a suggested PSU of 550 W. The MI300A uses an OAM Module slot width with no power connectors, while the Arc Pro B65 is Dual-slot with one 8-pin connector.

Q: Does the Intel Arc Pro B65 support ray tracing?

A: Yes, it has 20 ray tracing cores. The AMD Instinct MI300A has no ray tracing cores listed in the database.

Q: Which device has more shading units?

A: The AMD Instinct MI300A has 14592 shading units, compared to 2560 on the Intel Arc Pro B65. The MI300A also has 912 TMUs versus 160 on the Intel card.

Where Each One Wins

The AMD Instinct MI300A wins on raw compute density. It holds advantages in shading units (14592 versus 2560), TMUs (912 versus 160), FP32 throughput (61.29 TFLOPS versus 12.29 TFLOPS), texture rate (1,915.2 GTexel/s versus 384.0 GTexel/s), memory capacity (128 GB versus 32 GB), memory bandwidth (5.32 TB/s versus 608.0 GB/s), and memory bus width (8192 bit versus 256 bit). These specifications point to workloads that are bandwidth-saturated and compute-bound, such as large-scale matrix operations, scientific computing, and AI inference where model weights exceed 32 GB.

The Intel Arc Pro B65 wins on every graphics-oriented specification. It has 80 ROPs and produces 192.0 GPixel/s, while the MI300A produces 0 MPixel/s due to having no ROPs. The Intel card has 20 ray tracing cores; the AMD accelerator has none. The Arc Pro B65 supports DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.4, while the MI300A reports N/A for all three. The four DisplayPort 2.1 outputs enable multi-monitor setups, which the MI300A cannot support at all.

Power efficiency also favors the Intel part from the recorded data. The Arc Pro B65 delivers 12.29 TFLOPS at 200 W, while the MI300A delivers 61.29 TFLOPS at 750 W. The Intel card also requires a 550 W suggested PSU versus 1150 W for the AMD device, making it more practical for standard workstation builds.

For rendering, CAD visualization, video editing, or any workflow that requires a visible output, the Intel Arc Pro B65 is the only functional choice between the two. For headless compute clusters, simulation nodes, or large-memory acceleration, the AMD Instinct MI300A provides the higher throughput and memory capacity. The MI300A's 128 GB of HBM3 is particularly suited to datasets that exceed the 32 GB GDDR6 capacity of the Intel card. The 5.32 TB/s bandwidth of the AMD part is nearly nine times the 608.0 GB/s of the Intel card, which matters for memory-bound kernels.

The physical form factors also dictate different integration paths. The MI300A's OAM Module slot width and lack of power connectors suit proprietary server platforms, while the Arc Pro B65's Dual-slot design with a standard 8-pin connector fits conventional PC workstations. The MI300A's 1017 mm² die and 153,000 million transistors indicate a much larger, more complex chip than the 272 mm², 19,600 million transistor Intel part, consistent with their different market positions.