AMD Instinct MI355X vs Intel Arc A380E x2 Comparison

The AMD Instinct MI355X and Intel Arc A380E x2 occupy entirely different segments of the GPU market, and the recorded specifications confirm this. The MI355X is a data-center accelerator built for massive parallel compute, while the A380E x2 is a compact, display-oriented card with end-of-life status. Benchmark results are absent from the database, so the analysis relies on the documented architectural and specification differences. The MI355X is the clear choice for high-throughput AI and scientific workloads, whereas the A380E x2 serves multi-display embedded or edge applications. The data shows no overlap in intended use cases, and the specification gaps are so wide that any direct comparison is a study in extremes rather than competition.

The Verdict

The AMD Instinct MI355X is the dominant product for compute-heavy tasks. Its 16384 shading units, 288 GB of HBM3e memory, and 8.19 TB/s bandwidth place it in a class that the Intel Arc A380E x2 cannot approach. The MI355X delivers 78.64 TFLOPS of FP32 performance, which is 19.2 times the A380E x2's 4.096 TFLOPS. For any workload involving large datasets, matrix operations, or high-resolution simulation, the MI355X is the only viable option between the two.

The Intel Arc A380E x2, by contrast, is suited for environments requiring multiple display outputs. It offers 8x mini-DisplayPort 2.0 connections, whereas the MI355X has no display outputs at all. The A380E x2 also supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4, while the MI355X lists no graphics API support. For embedded systems, digital signage, or industrial visualization that need many monitors, the A380E x2 is the functional choice.

Neither product competes for the same buyer. The MI355X demands a 1400 W TDP and an 1800 W suggested PSU, while the A380E x2 requires only 130 W and a 300 W PSU. The MI355X uses an OAM module slot with no power connectors, whereas the A380E x2 is a single-slot card with one 6-pin connector. The verdict is straightforward: pick the MI355X for raw compute, pick the A380E x2 for display-centric, low-power deployments.

Architecture Differences

The two GPUs are built on fundamentally different architectures. The MI355X uses CDNA 4.0, a compute-optimized design, while the A380E x2 uses Xe-HPG, Intel's gaming and graphics architecture. The MI355X is fabricated on a 3 nm process at TSMC, compared to the 6 nm process for the A380E x2. This process advantage contributes to the MI355X's transistor count of 185,000 million, versus 7,200 million for the A380E x2. The die size reflects this gap: 2380 mm² for the MI355X against 157 mm² for the A380E x2. Transistor density also differs, with the MI355X at 77.7M per mm² and the A380E x2 at 45.9M per mm².

The MI355X chip is listed as the MI350 256CU, indicating 256 compute units. Its shading unit count is 16384, with 1024 texture mapping units and 0 ROPs. The pixel rate is recorded as 0 MPixel/s, and the texture rate is 2,457.6 GTexel/s. The A380E x2 uses the DG2-128 chip and has 1024 shading units, 64 TMUs, and 32 ROPs. Its pixel rate is 64.00 GPixel/s, and its texture rate is 128.0 GTexel/s. The A380E x2 also includes 8 ray tracing cores, while the MI355X lists no RT cores.

Memory architecture separates them further. The MI355X uses 288 GB of HBM3e with an 8192-bit bus, achieving 8.19 TB/s bandwidth. The A380E x2 has 6 GB of GDDR6 on a 96-bit bus, delivering 186.0 GB/s. The MI355X memory clock is 2000 MHz (8 Gbps effective), while the A380E x2 runs at 1937 MHz (15.5 Gbps effective). The MI355X supports FP16 at 78.64 TFLOPS with a 1:1 ratio to FP32, whereas the A380E x2 offers 8.192 TFLOPS FP16 with a 2:1 ratio.

The production status also differs: the A380E x2 is marked as end-of-life, with a successor listed as Battlemage. The MI355X has no production status, but its release date is 2025-06-11, and its predecessor is Radeon Instinct. The A380E x2 was released on 2024-03-31 and has Xe Graphics as its predecessor.

Head-to-Head Benchmarks

No benchmark scores exist in the database for either GPU, so head-to-head results are not available. Instead, the specification comparison provides the measurable differences. The FP32 compute performance is the most striking: the MI355X delivers 78.64 TFLOPS, which is 19.2 times the A380E x2's 4.096 TFLOPS. This means the MI355X can process a workload in roughly 5% of the time the A380E x2 would take, assuming linear scaling.

Memory bandwidth shows an even larger gap. The MI355X's 8.19 TB/s is 44.0 times the A380E x2's 186.0 GB/s. This bandwidth advantage is critical for data-intensive operations such as large language model inference or scientific computing. The MI355X's 288 GB memory capacity is 48 times the A380E x2's 6 GB, which directly impacts the size of datasets that can reside on the GPU.

Texture rate also favors the MI355X, with 2,457.6 GTexel/s versus 128.0 GTexel/s, a 19.2 times difference. The A380E x2 counters in pixel rate, offering 64.00 GPixel/s versus 0 MPixel/s for the MI355X. This is because the MI355X has no ROPs and no display output path, while the A380E x2 is designed for rendering to screens.

Clock speeds show a different pattern. The A380E x2 operates at a base clock of 2000 MHz and a boost clock of 2000 MHz, while the MI355X has a base of 1000 MHz and a boost of 2400 MHz. The A380E x2 runs at a higher base frequency, but the MI355X's boost clock is 400 MHz higher. Power efficiency favors the A380E x2 in absolute terms: 4.096 TFLOPS at 130 W yields 31.5 GFLOPS per watt, while the MI355X at 1400 W gives 56.2 GFLOPS per watt. The MI355X is more efficient per watt, but the A380E x2 requires far less total power.

FAQ

Q: Which GPU has more memory bandwidth?

A: The AMD Instinct MI355X has 8.19 TB/s bandwidth from HBM3e memory, while the Intel Arc A380E x2 has 186.0 GB/s from GDDR6. The MI355X provides 44.0 times the bandwidth.

Q: Can the MI355X output to displays?

A: No. The MI355X lists no display outputs and has 0 ROPs, with a pixel rate of 0 MPixel/s. The A380E x2 has 8x mini-DisplayPort 2.0 outputs and a pixel rate of 64.00 GPixel/s.

Q: What is the TDP difference between these GPUs?

A: The MI355X has a TDP of 1400 W with a suggested PSU of 1800 W, while the A380E x2 has a TDP of 130 W with a suggested PSU of 300 W. The MI355X consumes 10.8 times the power.

Q: Which GPU supports newer PCIe generations?

A: The MI355X uses PCIe 5.0 x16, while the A380E x2 uses PCIe 4.0 x8. The MI355X offers a newer and wider interface.

Q: Does the A380E x2 support ray tracing?

A: Yes, the A380E x2 has 8 ray tracing cores. The MI355X lists no ray tracing cores, consistent with its compute-focused design.

Q: What is the process node for each GPU?

A: The MI355X is built on a 3 nm process at TSMC, and the A380E x2 uses a 6 nm process at TSMC. The MI355X also has a smaller transistor size advantage, with 185,000 million transistors versus 7,200 million.

Where Each One Wins

The AMD Instinct MI355X wins decisively in all compute-oriented metrics. Its FP32 throughput of 78.64 TFLOPS is unmatched by the A380E x2's 4.096 TFLOPS. The 288 GB memory capacity and 8.19 TB/s bandwidth make it suitable for large-scale AI training, scientific simulations, and data analytics. The 8192-bit bus width and HBM3e type provide the memory subsystem needed for high-concurrency workloads. The MI355X also leads in texture rate at 2,457.6 GTexel/s, which benefits compute shaders and texture-heavy algorithms. With 16384 shading units and 1024 TMUs, the MI355X is built for parallel processing at scale.

The MI355X also wins on process technology and transistor integration. The 3 nm node and 77.7M transistors per mm² density indicate a more advanced manufacturing approach. Its PCIe 5.0 x16 interface doubles the bandwidth potential of the A380E x2's PCIe 4.0 x8. The MI355X has no display outputs, but for server and accelerator roles this is irrelevant. The 2400 MHz boost clock is 400 MHz higher than the A380E x2's 2000 MHz, contributing to its peak performance.

The Intel Arc A380E x2 wins in every display and graphics API category. It has 8x mini-DisplayPort 2.0 outputs, allowing connection to multiple monitors or displays. The MI355X has no outputs, so the A380E x2 is the only option for visual output. The A380E x2 supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4, while the MI355X reports no API support. This makes the A380E x2 compatible with standard graphics software stacks.

The A380E x2 also wins on physical size and power requirements. It is a single-slot card measuring 265 mm in length, 127 mm in height, and 20 mm in width. The MI355X is an OAM module with dimensions of 102 mm length and 165 mm width, but no height listed. The A380E x2 uses a single 6-pin power connector, while the MI355X has no power connectors, relying on the OAM slot. The A380E x2's 130 W TDP is far lower than the MI355X's 1400 W, making it suitable for systems with limited power budgets.

The A380E x2 has a higher base clock of 2000 MHz versus 1000 MHz for the MI355X, which means it runs at full speed without boost. It also has 32 ROPs and a pixel rate of 64.00 GPixel/s, enabling rasterization tasks. The 8 ray tracing cores provide hardware acceleration for ray-traced graphics, a feature absent from the MI355X. For embedded or edge applications that need rendering and multiple displays, the A380E x2 is the functional winner.

Specification Differences

The following table summarizes the fields where the two GPUs differ. Both share the same foundry (TSMC) and both have no tensor cores listed, but all other major specifications show divergence.

| Specification | AMD Instinct MI355X | Intel Arc A380E x2 |

|---------------|---------------------|--------------------|

| Architecture | CDNA 4.0 | Xe-HPG |

| Generation | Instinct (MIx) | Alchemist (Arc 3) |

| Process Node | 3 nm | 6 nm |

| Transistors | 185,000 million | 7,200 million |

| Die Size | 2380 mm² | 157 mm² |

| Transistor Density | 77.7M / mm² | 45.9M / mm² |

| Base Clock | 1000 MHz | 2000 MHz |

| Boost Clock | 2400 MHz | 2000 MHz |

| Memory Clock | 2000 MHz 8 Gbps effective | 1937 MHz 15.5 Gbps effective |

| Memory Size | 288 GB | 6 GB |

| Memory Type | HBM3e | GDDR6 |

| Memory Bus Width | 8192 bit | 96 bit |

| Memory Bandwidth | 8.19 TB/s | 186.0 GB/s |

| Shading Units | 16384 | 1024 |

| TMUs | 1024 | 64 |

| ROPs | 0 | 32 |

| RT Cores | None | 8 |

| Pixel Rate | 0 MPixel/s | 64.00 GPixel/s |

| Texture Rate | 2,457.6 GTexel/s | 128.0 GTexel/s |

| FP32 | 78.64 TFLOPS | 4.096 TFLOPS |

| FP16 | 78.64 TFLOPS (1:1) | 8.192 TFLOPS (2:1) |

| TDP | 1400 W | 130 W |

| Slot Width | OAM Module | Single-slot |

| Power Connectors | None | 1x 6-pin |

| Suggested PSU | 1800 W | 300 W |

| Bus Interface | PCIe 5.0 x16 | PCIe 4.0 x8 |

| Display Outputs | No outputs | 8x mini-DisplayPort 2.0 |

| DirectX | N/A | 12 Ultimate (12_2) |

| OpenGL | N/A | 4.6 |

| Vulkan | N/A | 1.4 |

| Length | 102 mm 4 inches | 265 mm 10.4 inches |

| Height | Not listed | 127 mm 5 inches |

| Width | 165 mm 6.5 inches | 20 mm 0.8 inches |

| Production Status | Not listed | End-of-life |

| Release Date | 2025-06-11 | 2024-03-31 |

| Predecessor | Radeon Instinct | Xe Graphics |

| Successor | Not listed | Battlemage |

The MI355X has no launch MSRP listed, and the A380E x2 also has no launch MSRP listed. Both GPUs have a percentile ranking of 50 against all GPUs, but no benchmark scores are available to support that ranking. The MI355X has no ROPs, which explains the zero pixel rate and lack of display support. The A380E x2 has 8 ray tracing cores, which the MI355X does not include. The memory clock difference is notable: the MI355X runs at 2000 MHz with 8 Gbps effective, while the A380E x2 runs at 1937 MHz with 15.5 Gbps effective, reflecting the different memory types.

The physical dimensions show the MI355X is a compact module at 102 mm by 165 mm, while the A380E x2 is a long card at 265 mm by 127 mm by 20 mm. The MI355X has a higher transistor density despite the larger die, indicating a denser packing of compute resources. The A380E x2's end-of-life status and successor Battlemage contrast with the MI355X, which has no successor listed and was released later. These specification differences confirm that the two GPUs are not alternatives but rather solutions for different problems.