AMD Instinct MI355X vs Intel Arc Pro B50 Comparison

Where Each One Wins

The AMD Instinct MI355X and Intel Arc Pro B50 occupy completely different corners of the GPU performance spectrum. The database records no direct head-to-head benchmark submissions for these two accelerators, so any comparison must rely on the architectural specifications and the limited benchmark data available for the Intel part.

The Arc Pro B50 has a recorded benchmark suite consisting of eight tests. Its strongest result is the PassMark G3D score of 12,553, which places it in the 17th percentile of all GPUs in the database. Its average benchmark score across all recorded tests is 2,660. The nearest rivals in the database for the Arc Pro B50 are the NVIDIA GeForce GT 1030 with an average score of 2,662 (a delta of -0.1%), the NVIDIA Quadro K1100M at 2,664 (-0.2%), the NVIDIA GeForce GT 440 at 2,645 (+0.6%), and the NVIDIA GeForce RTX 5070 SUPER at 2,690 (-1.1%). These deltas indicate that the Arc Pro B50 sits in a narrow performance band, within roughly one percent of each of these four very different cards.

The Instinct MI355X has no recorded average benchmark score, no percentile ranking beyond the neutral 50th percentile placeholder, and no nearest rival entries. The database contains no synthetic test results for this accelerator. Its performance characteristics must be inferred from its raw specification sheet, which describes a compute-oriented device rather than a rendering-oriented one.

The use-case split is stark. The Arc Pro B50 is a professional graphics card with display outputs (four mini-DisplayPort 2.1 connections), a full DirectX 12 Ultimate feature set, OpenGL 4.6 support, and Vulkan 1.4 compatibility. It has a pixel rate of 41.60 GPixel/s and a texture rate of 332.8 GTexel/s. These figures indicate a device designed for rasterization workloads, CAD viewport work, and general GPU-accelerated applications that require a physical display connection.

The Instinct MI355X has no display outputs whatsoever. Its pixel rate is recorded as 0 MPixel/s. It has no DirectX, OpenGL, or Vulkan API support listed. This is a compute accelerator in the purest sense: it processes data without ever presenting frames to a screen. Its 78.64 TFLOPS of FP32 throughput and identical 78.64 TFLOPS of FP16 throughput (at a 1:1 ratio) point to dense matrix mathematics, AI inference, and scientific simulation workloads.

The Arc Pro B50 delivers 10.65 TFLOPS of FP32 compute and 21.30 TFLOPS of FP16 compute, but its FP16 rate is achieved at a 2:1 ratio, meaning it dedicates half the throughput to FP16 operations compared to FP32. The Instinct MI355X runs FP16 at the same rate as FP32, a design choice that favors mixed-precision training and inference loops.

The Verdict

The data shows two devices with no overlap in intended function. The Instinct MI355X is a 1400 W OAM module with 288 GB of HBM3e memory across an 8192-bit bus, delivering 8.19 TB/s of memory bandwidth. The Arc Pro B50 is a 70 W dual-slot card with 16 GB of GDDR6 on a 128-bit bus, delivering 224.0 GB/s. The power envelope difference alone, a factor of twenty, separates these into different procurement categories entirely.

For compute-density workloads such as large language model training, scientific simulation, or batch inference, the Instinct MI355X is the only viable choice between these two. Its 288 GB memory capacity exceeds the Arc Pro B50's 16 GB by a factor of eighteen. Its 8.19 TB/s bandwidth is roughly 36.6 times larger than the Arc Pro B50's 224.0 GB/s. Its 16384 shading units dwarf the Arc Pro B50's 2048.

For workstation graphics tasks that require a display, the Arc Pro B50 is the only option. The Instinct MI355X cannot output video at all. The Arc Pro B50 supports modern graphics APIs, has 16 ray tracing cores, and its 41.60 GPixel/s fill rate enables real-time visualization work. Its launch MSRP is 349 USD.

The percentile data reinforces the divide. The Arc Pro B50's 17th percentile ranking places it below most GPUs in the database. The Instinct MI355X's 50th percentile is a neutral placeholder, not a measured result, so no comparative statement about its standing relative to other accelerators can be made from recorded data.

Head-to-Head Benchmarks

The database contains no head-to-head benchmark entries for this pair, with zero wins recorded for either side. The Arc Pro B50's individual benchmark results provide the only measured performance data in this comparison.

In 3DMark Steel Nomad (DX12), the Arc Pro B50 scores 1,604. The PassMark suite shows a G3D score of 12,553, a GPU compute score of 6,037, a G2D score of 717, a DirectX 9 score of 144, a DirectX 11 score of 100, a DirectX 12 score of 64, and a DirectX 10 score of 58. The DirectX 11 result is the highest among the DirectX subtests, while the DirectX 10 result is the lowest.

The nearest rival data for the Arc Pro B50 provides context for these numbers. The GeForce GT 1030 averages 2,662, which is effectively identical to the Arc Pro B50's 2,660 average. The RTX 5070 SUPER, despite being a much newer and higher-tier product, records an average of 2,690, only 1.1% above the Arc Pro B50. This clustering suggests that the database's average benchmark score metric compresses a wide range of real-world capability into a narrow band for these particular entries.

For the Instinct MI355X, no comparable numbers exist. Its FP32 throughput of 78.64 TFLOPS is 7.4 times the Arc Pro B50's 10.65 TFLOPS. Its texture rate of 2,457.6 GTexel/s is 7.4 times the Arc Pro B50's 332.8 GTexel/s. Its memory bandwidth of 8.19 TB/s is approximately 36.6 times the Arc Pro B50's 224.0 GB/s. These ratios come directly from the specification fields and represent the largest measured deltas between the two parts.

FAQ

Q: Which GPU has more memory bandwidth?

A: The AMD Instinct MI355X delivers 8.19 TB/s from HBM3e memory across an 8192-bit bus. The Intel Arc Pro B50 delivers 224.0 GB/s from GDDR6 on a 128-bit bus. The Instinct's bandwidth is approximately 36.6 times larger.

Q: Can the AMD Instinct MI355X output video to a display?

A: No. The Instinct MI355X lists no display outputs and a pixel rate of 0 MPixel/s. The Intel Arc Pro B50 has four mini-DisplayPort 2.1 outputs and a pixel rate of 41.60 GPixel/s.

Q: What is the power consumption difference?

A: The Instinct MI355X has a TDP of 1400 W with a suggested PSU of 1800 W. The Arc Pro B50 has a TDP of 70 W with a suggested PSU of 250 W. The Instinct consumes twenty times the power of the Arc Pro B50.

Q: How does the Arc Pro B50 compare to its nearest rivals in the database?

A: The Arc Pro B50 has an average benchmark score of 2,660. Its nearest rivals are the NVIDIA GeForce GT 1030 at 2,662 (-0.1%), the NVIDIA Quadro K1100M at 2,664 (-0.2%), the NVIDIA GeForce GT 440 at 2,645 (+0.6%), and the NVIDIA GeForce RTX 5070 SUPER at 2,690 (-1.1%). All five cards fall within a 1.7% range of each other.

Q: Which GPU supports modern graphics APIs?

A: The Intel Arc Pro B50 supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The AMD Instinct MI355X lists N/A for DirectX, OpenGL, and Vulkan support.

Q: What is the FP16 compute ratio difference?

A: The Instinct MI355X delivers 78.64 TFLOPS FP16 at a 1:1 ratio with its FP32 throughput. The Arc Pro B50 delivers 21.30 TFLOPS FP16 at a 2:1 ratio, meaning its FP16 rate is double its 10.65 TFLOPS FP32 rate.

Architecture Differences

The Instinct MI355X uses the MI350 256CU chip on the CDNA 4.0 architecture, manufactured on a 3 nm process at TSMC. The transistor count is 185,000 million across a die size of 2380 mm², yielding a transistor density of 77.7 million transistors per square millimeter. This is a massive compute die with 16,384 shading units and 1,024 texture mapping units, but zero ROPs and zero ray tracing cores.

The Arc Pro B50 uses the BMG-G21 chip on the Xe2-HPG architecture, manufactured on a 5 nm process at TSMC. It contains 19,600 million transistors on a 272 mm² die, for a density of 72.1 million transistors per square millimeter. It has 2,048 shading units, 128 texture mapping units, 16 ROPs, and 16 ray tracing cores.

The architectural philosophies diverge sharply. CDNA 4.0 is a compute-focused design that eliminates graphics-specific hardware entirely. The zero ROP count and zero ray tracing cores confirm this. Xe2-HPG is a hybrid architecture that retains full graphics capability while adding compute features. The presence of 16 ray tracing cores and 16 ROPs indicates a device that must rasterize and trace rays for professional visualization workloads.

The memory architectures also differ fundamentally. The Instinct MI355X uses HBM3e stacked memory with a 8192-bit interface, achieving 8.19 TB/s. The Arc Pro B50 uses discrete GDDR6 on a 128-bit bus, achieving 224.0 GB/s. The memory clock rates reflect this: the Instinct runs at 2000 MHz with 8 Gbps effective, while the Arc Pro B50 runs at 1750 MHz with 14 Gbps effective. The higher effective data rate of the GDDR6 does not compensate for the vastly wider HBM3e interface.

Both devices use PCIe 5.0, but with different lane counts. The Instinct MI355X uses x16, while the Arc Pro B50 uses x8. Both are manufactured by TSMC, but on different process nodes (3 nm versus 5 nm).

Specification Differences

The process node differs: the Instinct MI355X uses 3 nm, the Arc Pro B50 uses 5 nm. Transistor counts differ by an order of magnitude: 185,000 million versus 19,600 million. Die size differs similarly: 2380 mm² versus 272 mm². Transistor density is close, at 77.7M per mm² versus 72.1M per mm².

Clock speeds differ. The Instinct MI355X has a base clock of 1000 MHz and a boost clock of 2400 MHz. The Arc Pro B50 has a base clock of 1700 MHz and a boost clock of 2600 MHz. The Arc Pro B50 runs at higher clocks, but the Instinct's massive shading unit count produces far higher aggregate throughput.

Memory specifications diverge completely. The Instinct has 288 GB of HBM3e with an 8192-bit bus and 8.19 TB/s bandwidth. The Arc Pro B50 has 16 GB of GDDR6 with a 128-bit bus and 224.0 GB/s bandwidth.

Shading units: 16,384 versus 2,048. Texture mapping units: 1,024 versus 128. ROPs: 0 versus 16. Ray tracing cores: none listed versus 16. Pixel rate: 0 MPixel/s versus 41.60 GPixel/s. Texture rate: 2,457.6 GTexel/s versus 332.8 GTexel/s.

FP32 throughput: 78.64 TFLOPS versus 10.65 TFLOPS. FP16 throughput: 78.64 TFLOPS (1:1) versus 21.30 TFLOPS (2:1).

TDP: 1400 W versus 70 W. Suggested PSU: 1800 W versus 250 W. Slot width: OAM Module versus dual-slot. Power connectors: none listed for either, though the OAM form factor supplies power through the module interface.

Bus interface: PCIe 5.0 x16 versus PCIe 5.0 x8. Display outputs: none versus four mini-DisplayPort 2.1 connections. API support: N/A for all three APIs on the Instinct, versus DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4 on the Arc Pro B50.

Dimensions: the Instinct is 102 mm long and 165 mm wide. The Arc Pro B50 is 167 mm long, 69 mm high, and 40 mm wide.

Release dates differ: the Instinct MI355X launched on 2025-06-11, the Arc Pro B50 on 2025-09-04. The Arc Pro B50 is the only one with an explicitly listed production status of "Active" and the only one with a launch MSRP of 349 USD.