AMD Instinct MI350X vs AMD Radeon PRO W7900 Comparison

Where Each One Wins

The recorded data presents an unusual comparison: the AMD Instinct MI350X has no benchmark entries in the database, while the AMD Radeon PRO W7900 holds two recorded scores. This means the MI350X cannot claim any measured wins, and the W7900 wins by default in every category where numbers exist. The MI350X occupies the 50th percentile among all GPUs, a neutral position reflecting its lack of recorded benchmark data. The W7900 sits at the 94th percentile, indicating it outperforms the vast majority of GPUs in the database based on actual measurements.

The use-case split follows the hardware design. The MI350X is an OAM Module with no display outputs, built for compute environments where visual output is irrelevant. The W7900 is a triple-slot PCIe card with three DisplayPort 2.1 outputs and one mini-DisplayPort 2.1, making it suitable for workstation tasks that require driving multiple monitors. The MI350X targets dense compute workloads, while the W7900 serves interactive professional workflows. Neither card is a general-purpose consumer product, but their intended environments diverge sharply. The MI350X draws its power from the OAM slot with no power connectors listed, suggesting integration into server chassis with dedicated power delivery. The W7900 uses two 8-pin connectors and a 600 W suggested PSU, fitting conventional workstation power supplies.

The architectural split is clear: the MI350X is a CDNA 4.0 compute accelerator with 16,384 shading units and no raster operations pipelines, while the W7900 is an RDNA 3.0 graphics card with 6,144 shading units, 192 ROPs, and 96 ray tracing cores. The MI350X delivers 72.09 TFLOPS FP32 and the same FP16 figure at a 1:1 ratio. The W7900 delivers 61.32 TFLOPS FP32 and 61.32 TFLOPS FP16, also at 1:1. The MI350X leads in raw throughput, but the W7900 carries the graphics feature set: DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.4 support. The MI350X lists N/A for all graphics APIs, confirming its lack of rasterization or ray tracing capabilities.

Architecture Differences

The process nodes separate these designs by two generations of manufacturing technology. The MI350X uses a 3 nm process at TSMC with 185,000 million transistors on a 2,380 mm² die. The W7900 uses a 5 nm process at TSMC with 57,700 million transistors on a 529 mm² die. Transistor density tells a different story: the W7900 packs 109.1 million transistors per square millimeter, while the MI350X reaches 77.7 million per square millimeter. The MI350X achieves higher absolute transistor count through an enormous die, but the W7900 is denser per area.

Memory configurations diverge completely. The MI350X carries 288 GB of HBM3e on an 8,192-bit bus with 8.19 TB/s bandwidth. The W7900 carries 48 GB of GDDR6 on a 384-bit bus with 864.0 GB/s bandwidth. The MI350X memory bus is 21 times wider, and its bandwidth is roughly 9.5 times higher. Memory clocks differ: the MI350X runs at 2000 MHz with 8 Gbps effective, while the W7900 runs at 2250 MHz with 18 Gbps effective. The W7900 uses faster memory modules, but the MI350X compensates with vastly more parallel channels.

The clock behavior reflects their roles. The MI350X has a 1000 MHz base clock and 2200 MHz boost. The W7900 has a 1760 MHz base and 2495 MHz boost. The W7900 runs at higher frequencies, consistent with a graphics card tuned for latency-sensitive interactive workloads. The MI350X uses lower clocks but more compute units. Texture rate favors the MI350X at 2,252.8 GTexel/s versus 958.1 GTexel/s for the W7900. Pixel rate favors the W7900 at 479.0 GPixel/s versus 0 MPixel/s for the MI350X, which has no ROPs at all.

The bus interfaces differ by one generation. The MI350X uses PCIe 5.0 x16, while the W7900 uses PCIe 4.0 x16. The MI350X is physically small at 102 mm length and 165 mm width, an OAM module. The W7900 is 280 mm long, 110 mm tall, and 51 mm wide. The MI350X has no display outputs. The W7900 has four. The power envelopes are extreme: the MI350X lists a 1000 W TDP with a 1400 W suggested PSU, while the W7900 lists a 295 W TDP with a 600 W suggested PSU.

Head-to-Head Benchmarks

The head-to-head benchmark list is empty. The MI350X has no scores in the database, so comparisons rely on the W7900's recorded results and its nearest rival context. The W7900 scores 84,379 in Geekbench OpenCL and 137,070 in Geekbench Vulkan. Its average benchmark score is 110,725. The nearest rivals bracket this number: the AMD Radeon Pro Vega II averages 109,617, which is 1% behind the W7900. The AMD Radeon Pro W6600X averages 107,342, 3.2% behind. On the other side, the NVIDIA RTX A5500 Mobile averages 113,944, which is 2.8% ahead of the W7900. The NVIDIA Tesla V100 SXM2 16 GB averages 114,395, 3.2% ahead.

These deltas are small. The W7900 sits within a narrow performance band around 108,000 to 114,000 average score. The data indicates the W7900 is competitive with, but not dominant over, its immediate peers. The 1% gap to the Radeon Pro Vega II is within measurement noise. The 3.2% gap to the Radeon Pro W6600X is modest. The 2.8% and 3.2% gaps to the NVIDIA parts show the W7900 trailing slightly in average benchmark terms.

The MI350X cannot be placed in this band. Its 50th percentile ranking with zero average score suggests the database has not yet recorded compute workloads for it. The MI350X's FP32 throughput of 72.09 TFLOPS exceeds the W7900's 61.32 TFLOPS by roughly 17.6%. Its texture rate of 2,252.8 GTexel/s is 135% higher than the W7900's 958.1 GTexel/s. Its memory bandwidth of 8.19 TB/s is 848% higher than the W7900's 864.0 GB/s. These figures imply the MI350X would dominate in bandwidth-bound compute tasks, but no benchmark confirms this.

The Vulkan score of 137,070 for the W7900 is notably higher than its OpenCL score of 84,379. The Vulkan API path favors the RDNA 3.0 architecture. The MI350X has no Vulkan support listed, so this comparison is moot. The OpenCL score of 84,379 is the only cross-API compute result available, and the MI350X has no equivalent.

The percentile difference is stark: 50th versus 94th. This does not reflect intrinsic capability. It reflects data availability. The W7900 has been measured and ranked; the MI350X has not. The 50th percentile for the MI350X is a placeholder, not a performance verdict. The 94th percentile for the W7900 is a genuine measurement against the database's full GPU population.

FAQ

Q: How much memory does each card have?

A: The AMD Instinct MI350X has 288 GB of HBM3e memory. The AMD Radeon PRO W7900 has 48 GB of GDDR6 memory.

Q: Which card has higher FP32 compute throughput?

A: The MI350X delivers 72.09 TFLOPS FP32, while the W7900 delivers 61.32 TFLOPS FP32. The MI350X leads by roughly 17.6%.

Q: Does either card support graphics APIs?

A: The W7900 supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The MI350X lists N/A for DirectX, OpenGL, and Vulkan, indicating no graphics API support.

Q: What are the power requirements?

A: The MI350X has a 1000 W TDP and a suggested PSU of 1400 W, with no power connectors listed. The W7900 has a 295 W TDP and a suggested PSU of 600 W, using two 8-pin connectors.

Q: What is the W7900's average benchmark score and percentile?

A: The W7900 has an average benchmark score of 110,725 and sits at the 94th percentile among all GPUs. Its nearest rival, the NVIDIA Tesla V100 SXM2 16 GB, averages 114,395, which is 3.2% higher.

Q: What display outputs does each card provide?

A: The W7900 provides three DisplayPort 2.1 outputs and one mini-DisplayPort 2.1. The MI350X has no display outputs.

The Verdict

The data supports a clear division of roles. The MI350X is a compute accelerator with massive memory capacity, extreme bandwidth, and high FP32 throughput. Its 288 GB HBM3e and 8.19 TB/s bandwidth target workloads that move enormous datasets. Its 1000 W TDP and OAM form factor confirm server integration. The W7900 is a professional graphics card with display outputs, graphics API support, and ray tracing cores. Its 48 GB GDDR6 is sufficient for workstation tasks like rendering and video processing, but it cannot approach the MI350X's memory footprint.

For compute-centric users, the MI350X offers 4x the memory capacity of the W7900 and roughly 9.5x the bandwidth. Its FP32 output is 17.6% higher. Its lack of graphics APIs and display outputs is irrelevant in a server context. The W7900 wins for any workload requiring visual output, graphics API compatibility, or ray tracing. Its 479.0 GPixel/s pixel rate and 96 ray tracing cores provide functionality the MI350X lacks entirely.

The benchmark data does not directly compare the two. The W7900's 94th percentile and 110,725 average score are measured. The MI350X's 50th percentile and zero average score are placeholders. Users choosing between these cards should base decisions on workload requirements: the MI350X for dense compute and large memory pools, the W7900 for interactive professional graphics.

The release dates separate them by roughly two years. The W7900 launched in May 2023. The MI350X launched in June 2025. The MI350X uses a newer process node and newer memory technology. The W7900 uses a proven graphics architecture with broad software support. The MI350X has no recorded benchmarks, which means its performance in real workloads remains unverified in this database. The W7900 has verified scores that place it among the top 6% of GPUs.

The choice depends on whether the workload needs pixels or petabytes. The MI350X is the only option for GPU memory capacity approaching 288 GB. The W7900 is the only option for a PCIe card with four display outputs and full graphics API support.

Specification Differences

| Field | AMD Instinct MI350X | AMD Radeon PRO W7900 |

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

| Architecture | CDNA 4.0 | RDNA 3.0 |

| Process Node | 3 nm | 5 nm |

| Transistors | 185,000 million | 57,700 million |

| Die Size | 2380 mm² | 529 mm² |

| Transistor Density | 77.7M / mm² | 109.1M / mm² |

| Base Clock | 1000 MHz | 1760 MHz |

| Boost Clock | 2200 MHz | 2495 MHz |

| Memory Size | 288 GB | 48 GB |

| Memory Type | HBM3e | GDDR6 |

| Memory Bus Width | 8192 bit | 384 bit |

| Memory Bandwidth | 8.19 TB/s | 864.0 GB/s |

| Memory Clock | 2000 MHz 8 Gbps effective | 2250 MHz 18 Gbps effective |

| Shading Units | 16384 | 6144 |

| TMUs | 1024 | 384 |

| ROPs | 0 | 192 |

| Ray Tracing Cores | N/A | 96 |

| Pixel Rate | 0 MPixel/s | 479.0 GPixel/s |

| Texture Rate | 2,252.8 GTexel/s | 958.1 GTexel/s |

| FP32 | 72.09 TFLOPS | 61.32 TFLOPS |

| FP16 | 72.09 TFLOPS (1:1) | 61.32 TFLOPS (1:1) |

| TDP | 1000 W | 295 W |

| Slot Width | OAM Module | Triple-slot |

| Power Connectors | None | 2x 8-pin |

| Suggested PSU | 1400 W | 600 W |

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

| Display Outputs | No outputs | 3x DisplayPort 2.1, 1x mini-DisplayPort 2.1 |

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

| OpenGL | N/A | 4.6 |

| Vulkan | N/A | 1.4 |

| Dimensions | 102 mm x 165 mm | 280 mm x 110 mm x 51 mm |

| Release Date | 2025-06-11 | 2023-05-25 |