AMD Instinct MI350X vs Intel Arc Pro B70 Comparison

The AMD Instinct MI350X and Intel Arc Pro B70 occupy entirely different corners of the GPU market, and the recorded data reflects that separation clearly. The MI350X is a massive accelerator built around a 3 nm process with a 2380 mm² die and 185,000 million transistors, while the Arc Pro B70 is a dual-slot workstation card on a 5 nm process with a 368 mm² die. Their performance profiles, memory systems, and intended use cases diverge so sharply that a direct comparison is less about which is faster and more about which workload each was designed to serve. The MI350X delivers 72.09 TFLOPS of FP32 compute and 8.19 TB/s of memory bandwidth, whereas the Arc Pro B70 offers 22.94 TFLOPS of FP32 compute and 608.0 GB/s of bandwidth. The data indicates a clear hierarchy in raw compute, but the Intel card counters with features the AMD part lacks entirely, including display outputs, a full DirectX 12 Ultimate API, and ray tracing hardware.

Where Each One Wins

The AMD Instinct MI350X wins decisively in every metric tied to raw compute throughput and memory capacity. Its FP32 performance of 72.09 TFLOPS is more than triple the 22.94 TFLOPS of the Arc Pro B70, and its FP16 output of 72.09 TFLOPS (1:1) dwarfs the Intel card’s 45.88 TFLOPS (2:1). The MI350X also holds a massive advantage in texture processing, with a texture rate of 2,252.8 GTexel/s compared to 716.8 GTexel/s for the Arc Pro B70. Memory capacity is another landslide: 288 GB of HBM3e versus 32 GB of GDDR6, with bandwidth of 8.19 TB/s versus 608.0 GB/s. The MI350X uses an 8192-bit memory bus, while the Arc Pro B70 uses a 256-bit bus. For any workload that demands enormous datasets, high-bandwidth access, or sustained FP32/FP16 arithmetic, the MI350X is the only option between these two.

The Intel Arc Pro B70 wins in areas the MI350X simply does not address. The MI350X has no display outputs, while the Arc Pro B70 provides 1x HDMI 2.1a and 3x DisplayPort 2.1, making it a functional graphics card for visual output. The Arc Pro B70 also supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4, whereas the MI350X has N/A for all three APIs. The Intel card includes 32 ray tracing cores and 128 ROPs, while the MI350X has no listed RT cores and a pixel rate of 0 MPixel/s. The Arc Pro B70’s pixel rate of 358.4 GPixel/s confirms its ability to handle rasterization and rendering, tasks the MI350X cannot perform. Additionally, the Arc Pro B70 uses a 230 W TDP and a single 8-pin power connector, making it far easier to integrate into a standard workstation, while the MI350X requires a 1000 W TDP and 1400 W suggested PSU with no power connectors listed, as it is an OAM module.

The Verdict

The data points to an unambiguous conclusion: the AMD Instinct MI350X is a server-grade compute accelerator, not a graphics card, and the Intel Arc Pro B70 is a professional graphics card, not a compute beast. The MI350X should be chosen by anyone running large-scale AI inference, scientific simulation, or data-center workloads that require massive memory capacity and extreme FP32/FP16 throughput. Its 288 GB memory pool and 8.19 TB/s bandwidth are unmatched in this comparison, and its 72.09 TFLOPS FP32 output is the highest recorded figure between the two. The lack of display outputs and graphics APIs means it is not suitable for any task involving visual output, gaming, or traditional rendering.

The Intel Arc Pro B70 is the correct pick for workstation users who need a physical GPU with display connectivity, ray tracing, and standard API support. Its 32 GB GDDR6 memory, 358.4 GPixel/s pixel rate, and 32 RT cores make it a functional choice for 3D modeling, video editing, or CAD work, where the MI350X would be useless due to its lack of outputs and API support. The Arc Pro B70 also carries a launch MSRP of 949 USD, which establishes it as a professional-tier product, but the MI350X has no launch MSRP listed, reflecting its different distribution model. In short, the MI350X wins on computation, the Arc Pro B70 wins on functionality, and no user should confuse the two.

Head-to-Head Benchmarks

The recorded benchmark data shows no direct head-to-head test results, but the specification-level comparisons provide clear winners in every measurable category. The largest gap is in memory bandwidth: the MI350X delivers 8.19 TB/s, which is 13.47 times the 608.0 GB/s of the Arc Pro B70. This is not a marginal difference; it is an order-of-magnitude separation that dictates entirely different workload classes. The MI350X also leads in FP32 compute with 72.09 TFLOPS versus 22.94 TFLOPS, a 3.14x advantage. In FP16, the MI350X’s 72.09 TFLOPS (1:1) beats the Arc Pro B70’s 45.88 TFLOPS (2:1) by 1.57x, though the Intel card’s 2:1 ratio means it can double its FP16 rate relative to FP32, a feature the MI350X does not need because it already matches FP32.

Texture rate follows the same pattern: 2,252.8 GTexel/s for the MI350X versus 716.8 GTexel/s for the Arc Pro B70, a 3.14x lead. The MI350X has 16,384 shading units compared to 4,096 for the Intel card, and 1,024 TMUs versus 256, both exactly 4x differences. However, the Arc Pro B70 wins in pixel rate, 358.4 GPixel/s versus 0 MPixel/s, because the MI350X has no ROPs listed. The Intel card’s 128 ROPs give it actual rasterization capability, while the MI350X cannot output pixels at all. Clock speeds also differ: the MI350X runs at a 1000 MHz base and 2200 MHz boost, while the Arc Pro B70 runs at 2280 MHz base and 2800 MHz boost, meaning the Intel card operates at higher frequencies but with far fewer cores.

Memory type and capacity reinforce the divide. The MI350X uses 288 GB of HBM3e across an 8192-bit bus, while the Arc Pro B70 uses 32 GB of GDDR6 across a 256-bit bus. The MI350X’s memory clock is 2000 MHz with 8 Gbps effective, whereas the Arc Pro B70’s memory runs at 2375 MHz with 19 Gbps effective. Despite the Intel card’s higher memory clock, the MI350X’s enormous bus width yields far greater total bandwidth. The MI350X also has a much larger die at 2380 mm² versus 368 mm², and a higher transistor count at 185,000 million versus unknown for the Intel part. Transistor density for the MI350X is 77.7M per mm², while the Arc Pro B70 has no recorded density figure.

FAQ

Q: Which GPU has higher FP32 compute performance?

A: The AMD Instinct MI350X delivers 72.09 TFLOPS of FP32, which is 3.14 times the 22.94 TFLOPS of the Intel Arc Pro B70.

Q: Can the AMD Instinct MI350X output video to a display?

A: No. The MI350X has no display outputs listed, while the Intel Arc Pro B70 provides 1x HDMI 2.1a and 3x DisplayPort 2.1.

Q: What is the memory capacity difference between the two?

A: The MI350X has 288 GB of HBM3e memory, while the Arc Pro B70 has 32 GB of GDDR6. The MI350X also uses an 8192-bit bus versus a 256-bit bus, resulting in 8.19 TB/s bandwidth compared to 608.0 GB/s.

Q: Does the Intel Arc Pro B70 support ray tracing?

A: Yes, the Arc Pro B70 includes 32 ray tracing cores and supports DirectX 12 Ultimate (12_2). The MI350X has no RT cores listed and shows N/A for DirectX, OpenGL, and Vulkan support.

Q: What are the power requirements for each card?

A: The MI350X has a 1000 W TDP and a suggested PSU of 1400 W, with no power connectors listed because it is an OAM module. The Arc Pro B70 has a 230 W TDP, uses a single 8-pin power connector, and has a suggested PSU of 550 W.

Q: Which card is physically larger?

A: The MI350X measures 102 mm in length and 165 mm in width, while the Arc Pro B70 measures 267 mm in length, 110 mm in height, and 39 mm in width. The MI350X is an OAM module, whereas the Arc Pro B70 is a dual-slot card.

Architecture Differences

The architectural split between the two GPUs is fundamental. The MI350X uses AMD’s CDNA 4.0 architecture, built on a 3 nm process at TSMC, with a chip labeled “MI350 256CU” and a die size of 2380 mm². It packs 185,000 million transistors, resulting in a transistor density of 77.7M per mm². The architecture is compute-optimized, with 16,384 shading units, 1,024 TMUs, and no ROPs, no RT cores, and no tensor cores listed. Its FP16 output matches FP32 at 72.09 TFLOPS (1:1), indicating a design focused on parallel arithmetic rather than graphics pipeline tasks. The memory subsystem uses HBM3e across an 8192-bit bus, and the card has no display outputs, no graphics APIs, and no pixel rate. It is classified as an OAM module with a 1000 W TDP and no power connectors, meaning it is designed for server chassis with dedicated power delivery.

The Intel Arc Pro B70 uses the Xe2-HPG architecture, specifically the BMG-G31 chip, on a 5 nm process at TSMC. Its die size is 368 mm², and its transistor count is listed as unknown. The architecture is graphics-oriented, featuring 4,096 shading units, 256 TMUs, 128 ROPs, and 32 RT cores. It supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4, and has a pixel rate of 358.4 GPixel/s. Its FP16 output is 45.88 TFLOPS (2:1), which means it can achieve double the FP32 rate in FP16 workloads. The memory system uses GDDR6 across a 256-bit bus, and the card provides display outputs via HDMI 2.1a and DisplayPort 2.1. It is a dual-slot card with a 230 W TDP and a single 8-pin power connector, designed for standard workstation power supplies.

Specification Differences

The specification differences between the two GPUs are extensive and define their separate roles. The MI350X uses a 3 nm process node, while the Arc Pro B70 uses 5 nm. The MI350X has a die size of 2380 mm², compared to 368 mm² for the Arc Pro B70. Transistor counts are 185,000 million for the MI350X and unknown for the Intel card. The MI350X has a base clock of 1000 MHz and boost clock of 2200 MHz, while the Arc Pro B70 runs at 2280 MHz base and 2800 MHz boost. Memory clocks are 2000 MHz with 8 Gbps effective for the MI350X, versus 2375 MHz with 19 Gbps effective for the Arc Pro B70.

Memory capacity is 288 GB for the MI350X versus 32 GB for the Arc Pro B70. Memory type is HBM3e for the AMD card and GDDR6 for the Intel card. Bus width is 8192 bits versus 256 bits. Bandwidth is 8.19 TB/s versus 608.0 GB/s. Shading units are 16,384 versus 4,096. TMUs are 1,024 versus 256. ROPs are 0 versus 128. RT cores are not listed for the MI350X, while the Arc Pro B70 has 32. Pixel rate is 0 MPixel/s versus 358.4 GPixel/s. Texture rate is 2,252.8 GTexel/s versus 716.8 GTexel/s. FP32 is 72.09 TFLOPS versus 22.94 TFLOPS. FP16 is 72.09 TFLOPS (1:1) versus 45.88 TFLOPS (2:1). TDP is 1000 W versus 230 W. Slot width is OAM Module versus Dual-slot. Power connectors are None versus 1x 8-pin. Suggested PSU is 1400 W versus 550 W. Bus interface is PCIe 5.0 x16 for both. Display outputs are No outputs versus 1x HDMI 2.1a and 3x DisplayPort 2.1. The MI350X has no API support listed, while the Arc Pro B70 supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The MI350X measures 102 mm by 165 mm, while the Arc Pro B70 measures 267 mm by 110 mm by 39 mm. The MI350X’s release date is 2025-06-11, and the Arc Pro B70’s is 2026-03-25. The Arc Pro B70 has a launch MSRP of 949 USD, while the MI350X has none listed.