AMD Radeon Instinct MI308X vs Intel Arc Pro B65 Comparison

Where Each One Wins

The recorded data presents a unique comparison, as neither product has benchmark entries in the database, and both hold a percentile rank of 50 against all GPUs. The AMD Radeon Instinct MI308X is positioned as a data center compute accelerator with no display outputs, while the Intel Arc Pro B65 is an active production workstation card with four DisplayPort 2.1 outputs. The use-case split is therefore defined by their physical and architectural characteristics rather than measured frame rates or compute scores.

The AMD part wins in scenarios demanding massive memory capacity and raw compute throughput. It carries 192 GB of HBM3 across an 8192-bit bus, delivering 10.3 TB/s of bandwidth. Its FP32 throughput is 81.72 TFLOPS, and its FP16 throughput reaches 653.7 TFLOPS at an 8:1 ratio. These figures indicate a device built for large-scale matrix operations, high-performance computing workloads, and memory-bound tasks where capacity and bandwidth are the primary constraints. The absence of display outputs confirms it is not intended for interactive graphics.

The Intel Arc Pro B65 wins in client-side professional graphics and workstation deployment. It provides 32 GB of GDDR6 on a 256-bit bus with 608.0 GB/s of bandwidth, which is a far smaller memory subsystem but paired with a 192.0 GPixel/s pixel rate and 80 ROPs. It supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4, making it a functional graphics device. Its 2400 MHz base and boost clocks are identical, indicating a stable operating point. With 2560 shading units and 20 ray tracing cores, it covers rendering, ray-traced workloads, and conventional GPU-accelerated applications in a dual-slot, 200 W package.

The data indicates the AMD MI308X is the choice for non-visual, throughput-oriented acceleration, while the Intel Arc Pro B65 is the choice for visual computing and professional graphics tasks that require display output and API support.

FAQ

Q: Which GPU has more memory bandwidth?

A: The AMD Radeon Instinct MI308X has 10.3 TB/s of bandwidth from 192 GB of HBM3 on an 8192-bit bus, versus 608.0 GB/s from 32 GB of GDDR6 on a 256-bit bus for the Intel Arc Pro B65.

Q: Can the AMD Radeon Instinct MI308X drive a display?

A: No. The MI308X lists "No outputs" as its display outputs, whereas the Intel Arc Pro B65 has 4x DisplayPort 2.1.

Q: What is the power consumption of each card?

A: The AMD MI308X has a TDP of 750 W with a suggested PSU of 1150 W and no power connectors (OAM Module). The Intel Arc Pro B65 has a TDP of 200 W, uses a single 8-pin connector, and requires a suggested PSU of 550 W.

Q: Which card has ray tracing hardware?

A: The Intel Arc Pro B65 includes 20 ray tracing cores. The AMD MI308X lists no ray tracing core count.

Q: What API support does each card offer?

A: The Intel Arc Pro B65 supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The AMD MI308X has no API support data recorded.

Q: How do their FP32 compute figures compare?

A: The AMD MI308X achieves 81.72 TFLOPS FP32, while the Intel Arc Pro B65 achieves 12.29 TFLOPS FP32, a difference of roughly 6.6 times in favor of the AMD part.

Head-to-Head Benchmarks

The database contains no head-to-head benchmark entries or wins for either product, so the comparison relies on specification-derived performance indicators. The most decisive gap is in memory bandwidth. The MI308X delivers 10.3 TB/s, which is 16.9 times the 608.0 GB/s of the Arc Pro B65. This is the defining advantage for the AMD accelerator: workloads that stream large datasets will see the MI308X sustain higher throughput regardless of compute capabilities.

Compute throughput similarly favors the MI308X. Its FP32 output of 81.72 TFLOPS is 6.6 times the 12.29 TFLOPS of the Intel card. In FP16, the MI308X reaches 653.7 TFLOPS at an 8:1 ratio, compared to 24.58 TFLOPS at a 2:1 ratio for the Arc Pro B65. The magnitude of the FP16 advantage is substantial, but the ratio difference matters: the MI308X uses an 8:1 FP16 to FP32 ratio, indicating specialized matrix hardware, while the Arc Pro B65 uses a 2:1 ratio, typical of graphics-oriented shader execution.

Texture and pixel rates tell a different story. The MI308X has a texture rate of 2,553.6 GTexel/s with 1216 TMUs, but a pixel rate of 0 MPixel/s and no ROPs. The Arc Pro B65 has a texture rate of 384.0 GTexel/s and a pixel rate of 192.0 GPixel/s with 80 ROPs. The MI308X cannot rasterize at all, while the Intel card has a full graphics pipeline. This is the clearest functional divergence: the AMD part is compute-only, the Intel part is a complete graphics processor.

Clock behavior also differs. The MI308X runs at a 1000 MHz base and 2100 MHz boost, a 2.1 times boost range. The Arc Pro B65 runs at a flat 2400 MHz base and boost, indicating no dynamic boost headroom. Higher clocks on the Intel part help its graphics throughput per unit of compute hardware, but they cannot compensate for the MI308X's larger transistor budget and memory system.

Specification Differences

The two cards differ across nearly every measured field. The AMD MI308X uses an OAM Module slot width with no power connectors, while the Intel Arc Pro B65 is a dual-slot card with one 8-pin power connector. The MI308X has a TDP of 750 W and a suggested PSU of 1150 W; the Arc Pro B65 has a TDP of 200 W and a suggested PSU of 550 W.

Memory configurations are entirely different: 192 GB HBM3 with an 8192-bit bus and 10.3 TB/s bandwidth for AMD, versus 32 GB GDDR6 with a 256-bit bus and 608.0 GB/s for Intel. The MI308X has 19,456 shading units, 1,216 TMUs, and no ROPs. The Arc Pro B65 has 2,560 shading units, 160 TMUs, and 80 ROPs. The AMD card has no ray tracing cores recorded; the Intel card has 20.

The MI308X has no display outputs. The Arc Pro B65 has 4x DisplayPort 2.1. The AMD card lacks DirectX, OpenGL, and Vulkan support data; the Intel card supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The MI308X has a base clock of 1000 MHz and boost of 2100 MHz with memory at 2525 MHz (10.1 Gbps effective). The Arc Pro B65 has a base and boost of 2400 MHz with memory at 2375 MHz (19 Gbps effective).

Release dates differ: the MI308X released on 2023-12-05, while the Arc Pro B65 releases on 2026-03-31. The MI308X has a predecessor listed as "FirePro Data Center"; the Arc Pro B65 has none. The Arc Pro B65 has a production status of "Active"; the MI308X has none recorded. Neither product has a launch MSRP in the database.

Architecture Differences

The AMD Radeon Instinct MI308X uses the CDNA 3.0 architecture with the Aqua Vanjaram chip, belonging to the Radeon Instinct (MIx) generation. It is built on a 5 nm TSMC process with 153,000 million transistors on a 1017 mm² die, yielding a transistor density of 150.4M per mm². This is a massive, compute-optimized design with no graphics features: no ROPs, no pixel rate, no display pipeline, and no API support data.

The Intel Arc Pro B65 uses the Xe2-HPG architecture with the BMG-G21 chip, belonging to the Battlemage (Pro Series) generation. It is also built on a 5 nm TSMC process but with 19,600 million transistors on a 272 mm² die, for a transistor density of 72.1M per mm². The Intel chip integrates a full graphics stack: 80 ROPs, 20 ray tracing cores, pixel rate of 192.0 GPixel/s, and support for modern graphics APIs.

The transistor counts reveal the scale difference. The MI308X has 7.8 times more transistors than the Arc Pro B65, and its die is 3.7 times larger. The transistor density is also higher on the AMD chip (150.4M vs 72.1M per mm²), indicating a denser, more specialized layout. The MI308X uses HBM3 memory with 8 stacks implied by the 8192-bit bus, while the Arc Pro B65 uses GDDR6 on a 256-bit bus.

The MI308X has no display outputs and no power connectors, as it is designed for OAM module integration in server chassis. The Arc Pro B65 has display outputs and a standard power connector, reflecting its workstation-oriented design. The FP16 ratio difference (8:1 for AMD, 2:1 for Intel) points to different compute philosophies: the MI308X prioritizes matrix math with reduced precision, while the Arc Pro B65 maintains a graphics-friendly balance between FP16 and FP32.

The Verdict

The data supports a clear division of roles. The AMD Radeon Instinct MI308X is for compute environments that need extreme memory capacity (192 GB), extreme bandwidth (10.3 TB/s), and extreme FP32/FP16 throughput (81.72 and 653.7 TFLOPS). Its lack of display outputs, ROPs, and API support makes it unsuitable for any interactive or graphics role. The 750 W TDP and OAM form factor place it in server racks with dedicated power delivery, not desktop workstations.

The Intel Arc Pro B65 is for professional graphics workstations. It provides 32 GB of GDDR6, 192.0 GPixel/s rasterization, 20 ray tracing cores, and four DisplayPort 2.1 outputs. Its 200 W TDP and single 8-pin connector fit standard workstation power budgets. Its 12.29 TFLOPS FP32 and 24.58 TFLOPS FP16 are modest next to the MI308X, but it can render, output video, and accelerate graphics APIs, which the MI308X cannot do at all.

Neither card has benchmark scores or nearest rivals in the database, so the verdict rests on specification analysis. The MI308X wins every compute and memory metric; the Arc Pro B65 wins every graphics and connectivity metric. A buyer needing server-side inference or HPC acceleration should select the MI308X. A buyer needing a professional GPU with display output, ray tracing, and standard API support should select the Arc Pro B65. The two products do not compete in the same workload space; the data indicates complementary rather than overlapping roles.