AMD Instinct MI355X vs AMD Radeon PRO W7500 Comparison

AMD Instinct MI355X and AMD Radeon PRO W7500 occupy opposite ends of the AMD professional GPU spectrum. The MI355X is a massive OAM module designed for compute-focused data center installations, while the W7500 is a compact, active single-slot workstation card with display outputs. The database shows a clear divergence: the MI355X holds no recorded benchmark scores, while the W7500 has a full suite of results, placing it at the 59th percentile of all GPUs. This analysis separates the two based on their complete, factually documented profiles.

Where Each One Wins

The AMD Instinct MI355X wins exclusively in raw compute capacity and memory scale. Its specifications point to a device built for workloads that saturate massive parallel arrays. The card uses 16,384 shading units, 1,024 texture mapping units, and delivers 78.64 TFLOPS of FP32 performance. Its memory subsystem is equally imposing: 288 GB of HBM3e on an 8192-bit bus, generating 8.19 TB/s of bandwidth. The MI355X also leads in process technology, built on a 3 nm node at TSMC with 185,000 million transistors on a 2380 mm² die. For any application that needs to hold enormous datasets in local memory or process dense matrix operations, the MI355X is the only option between the two.

The AMD Radeon PRO W7500 wins in every practical workstation scenario that requires a physical output. It is the only one of the pair with display outputs, offering 4x DisplayPort 2.1. It also has a complete API stack, including DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4, whereas the MI355X lists N/A for all three. The W7500 has a real pixel rate of 108.8 GPixel/s and 64 raster operation units, while the MI355X records 0 MPixel/s and 0 ROPs, meaning the MI355X cannot render to a screen. The W7500 also wins on physical integration: it is a single-slot card with a 70 W TDP, no power connectors, and a suggested PSU of 250 W, versus the MI355X's 1400 W TDP and 1800 W suggested PSU.

FAQ

Q: Which GPU has better software and API support?

A: The Radeon PRO W7500 supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The Instinct MI355X lists N/A for DirectX, OpenGL, and Vulkan, indicating no support for these consumer graphics APIs.

Q: Can the Instinct MI355X be used for standard desktop graphics?

A: No. The MI355X has no display outputs, a pixel rate of 0 MPixel/s, and 0 ROPs. It is an OAM module with no video connectors, whereas the W7500 provides 4x DisplayPort 2.1.

Q: How do the memory capacities compare?

A: The MI355X has 288 GB of HBM3e memory on a 8192-bit bus with 8.19 TB/s bandwidth. The W7500 has 8 GB of GDDR6 on a 128-bit bus with 256.0 GB/s bandwidth. The MI355X provides 36 times the capacity and 32 times the bandwidth.

Q: What is the performance percentile of each card in the database?

A: The Radeon PRO W7500 sits at the 59th percentile of all GPUs with an average benchmark score of 16,415. The Instinct MI355X has no recorded benchmark scores and sits at the 50th percentile with an average score of 0.

Q: Which card has a higher FP32 throughput?

A: The MI355X delivers 78.64 TFLOPS of FP32 performance. The W7500 delivers 12.19 TFLOPS. The MI355X has roughly 6.5 times the raw FP32 compute.

Q: What are the power requirements for each?

A: The MI355X has a 1400 W TDP and a suggested PSU of 1800 W. The W7500 has a 70 W TDP and a suggested PSU of 250 W. The W7500 uses no power connectors, and the MI355X also lists no power connectors, relying on its OAM slot.

Head-to-Head Benchmarks

The database contains no direct head-to-head benchmark results between these two cards. The MI355X has an empty benchmark array, and the head-to-head comparison table is also empty. Therefore, the only numerical comparison available comes from the W7500's standalone scores and the MI355X's specification-derived capabilities.

The Radeon PRO W7500 achieves a Geekbench OpenCL score of 58,213 and a Geekbench Vulkan score of 68,634. In Passmark tests, it scores 13,368 in G3D, 5,910 in GPU Compute, 1,174 in G2D, 200 in DirectX 9, 125 in DirectX 11, 65 in DirectX 10, and 46 in DirectX 12. Its average benchmark score is 16,415, which places it nearly even with the NVIDIA RTX PRO 6000 Blackwell at 16,408 (0% delta), and slightly ahead of the AMD Radeon RX 5700 XT at 16,361 (0.3% delta) and the AMD Radeon Pro 5600M at 16,351 (0.4% delta). It trails the NVIDIA GeForce RTX 5090 D V2 at 16,504 by 0.5%. These results indicate the W7500 performs at a mainstream level, competitive with older gaming and workstation parts.

The MI355X has no benchmark scores to compare. Its advantage can only be inferred from its specification sheet: 78.64 TFLOPS FP32 versus 12.19 TFLOPS for the W7500, 8.19 TB/s memory bandwidth versus 256.0 GB/s, and 288 GB of memory versus 8 GB. The MI355X also has a texture rate of 2,457.6 GTexel/s versus 190.4 GTexel/s for the W7500. These gaps are extreme, but without recorded benchmark runs, the database cannot quantify the MI355X's actual performance in standard tests.

Specification Differences

The two cards differ in nearly every measurable specification. The MI355X uses a 3 nm process node from TSMC, while the W7500 uses a 6 nm node from the same foundry. Transistor counts differ dramatically: 185,000 million for the MI355X versus 13,300 million for the W7500. Die size is 2380 mm² versus 204 mm². Transistor density is 77.7M per mm² for the MI355X and 65.2M per mm² for the W7500.

Clock speeds also diverge. The MI355X has a base clock of 1000 MHz and a boost clock of 2400 MHz. The W7500 has a base clock of 1500 MHz and a boost clock of 1700 MHz. Memory clocks are listed as 2000 MHz with 8 Gbps effective for the MI355X, and 2000 MHz with 16 Gbps effective for the W7500.

The memory subsystem is incomparable: 288 GB HBM3e on an 8192-bit bus for the MI355X, versus 8 GB GDDR6 on a 128-bit bus for the W7500. Shading units are 16,384 versus 1,792. TMUs are 1,024 versus 112. ROPs are 0 versus 64. The W7500 has 28 ray tracing cores; the MI355X lists null for RT cores. Pixel rate is 0 MPixel/s for the MI355X and 108.8 GPixel/s for the W7500. Texture rate is 2,457.6 GTexel/s versus 190.4 GTexel/s.

FP16 performance also differs: the MI355X delivers 78.64 TFLOPS with a 1:1 ratio, while the W7500 delivers 24.37 TFLOPS with a 2:1 ratio. The MI355X has a 1400 W TDP and is an OAM Module, while the W7500 has a 70 W TDP and is single-slot. The bus interface is PCIe 5.0 x16 for the MI355X and PCIe 4.0 x8 for the W7500. The MI355X has no display outputs; the W7500 has 4x DisplayPort 2.1. Dimensions differ: the MI355X is 102 mm long and 165 mm wide, while the W7500 is 216 mm long, 115 mm high, and 20 mm wide.

Architecture Differences

The architecture split is fundamental. The MI355X uses CDNA 4.0, a compute-optimized design with the chip labeled "MI350 256CU." The W7500 uses RDNA 3.0, a graphics-optimized design with the chip labeled "Navi 33" and the codename "Hotpink Bonefish." The MI355X belongs to the Instinct (MIx) generation, while the W7500 belongs to the Radeon Pro Navi (Navi III Series) generation.

The MI355X has no ray tracing cores listed, no ROPs, and no display outputs, confirming a pure compute architecture. The W7500 integrates 28 ray tracing cores, 64 ROPs, and full display support, indicating a graphics-first pipeline. The MI355X uses HBM3e memory, which is stacked and high-bandwidth, while the W7500 uses GDDR6, a more conventional discrete memory type.

The MI355X has a transistor density of 77.7M per mm² on a 3 nm node, versus 65.2M per mm² on a 6 nm node for the W7500. This reflects the newer manufacturing process for the compute card. The MI355X also has a different memory clock formulation: 2000 MHz with 8 Gbps effective, versus 2000 MHz with 16 Gbps effective for the W7500, despite the W7500 having a lower overall bandwidth due to its narrower bus.

The release dates are separated by nearly two years: the MI355X was released on 2025-06-11, while the W7500 was released on 2023-08-02. The predecessor names differ as well: the MI355X follows "Radeon Instinct," and the W7500 follows "Radeon Pro Vega." Both have no listed successor.

The Verdict

The data supports a clear separation of roles. The AMD Instinct MI355X is for compute-dense environments that prioritize memory capacity and raw FP32 throughput. Its 288 GB of HBM3e, 8.19 TB/s bandwidth, and 78.64 TFLOPS FP32 are unmatched by the W7500. However, it has no display outputs, no graphics APIs, and no recorded benchmark scores. It is also a 1400 W OAM module, requiring a server chassis with 1800 W of PSU headroom. The MI355X is not a graphics card in any conventional sense.

The AMD Radeon PRO W7500 is the only one of the two that can function as a workstation GPU. It has 4x DisplayPort 2.1, supports DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.4, and produces a real pixel rate of 108.8 GPixel/s. Its 8 GB of GDDR6 and 12.19 TFLOPS FP32 are modest, but its 70 W TDP and single-slot design allow it to fit into standard workstations with a 250 W PSU. Its benchmark scores confirm it performs at a level comparable to the NVIDIA RTX PRO 6000 Blackwell and the AMD Radeon RX 5700 XT, all within a 0.5% delta.

The database shows the MI355X with zero wins in benchmark comparisons and the W7500 with zero wins as well, because no head-to-head results exist. The choice comes down to workload. For server-side compute with massive memory needs, the MI355X is the only viable part. For any task requiring a monitor output, software rendering APIs, or a low-power desktop footprint, the W7500 is the sole option. The MI355X is a compute accelerator, and the W7500 is a workstation graphics card. Neither can substitute for the other in its intended environment. The W7500 has a launch MSRP of 429 USD, a fact that provides context for its market position, though the MI355X has no listed launch MSRP.