AMD Instinct MI350P vs AMD Radeon PRO W7900D Comparison

The Verdict

The data positions the AMD Instinct MI350P and AMD Radeon PRO W7900D as fundamentally different tools, despite sharing the same manufacturer and a 50th percentile rank among all GPUs in the database. The MI350P is an accelerator without display outputs, built around CDNA 4.0 architecture, 144 GB of HBM3e memory, and a 600 W power envelope. The W7900D is a workstation graphics card with RDNA 3.0, 48 GB of GDDR6, triple-slot cooling, and three DisplayPort 2.1 outputs plus one mini-DisplayPort 2.1.

Benchmark scores in the database show no recorded wins for either product, and the average benchmark score for both is zero, indicating that no comparative performance data has been captured yet. The verdict must therefore rest on architectural and specification differences alone. The MI350P targets workloads that demand massive memory capacity and bandwidth: 144 GB and 8.19 TB/s versus 48 GB and 864.0 GB/s. The W7900D counters with higher raw floating-point throughput: 52.99 TFLOPS FP32 versus 36.04 TFLOPS, and a full graphics API stack including DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.4.

For buyers who need to render, display, or interact with graphics, the W7900D is the only choice with outputs. For compute tasks that fit within a 600 W board power limit and require the largest possible memory footprint, the MI350P is the data-backed selection. Neither product has recorded benchmark wins, so any purchase decision must be guided by the specification sheet rather than measured performance.

Where Each One Wins

The MI350P wins on memory capacity, memory bandwidth, and process technology. It carries 144 GB of HBM3e across an 8192-bit bus, delivering 8.19 TB/s. The W7900D uses 48 GB of GDDR6 on a 384-bit bus, achieving 864.0 GB/s. The MI350P is built on TSMC's 3 nm process with 73,000 million transistors on a 1190 mm² die. The W7900D uses TSMC's 5 nm node with 57,700 million transistors on a 529 mm² die. The MI350P also has more shading units (8192 versus 6144) and more texture mapping units (512 versus 384), though it reports zero ROPs and zero pixel rate, confirming it is not designed for rasterization output.

The W7900D wins on raw FP32 compute, pixel throughput, and graphics features. It delivers 52.99 TFLOPS FP32 and FP16 (1:1), versus 36.04 TFLOPS for both on the MI350P. The W7900D has 192 ROPs and a pixel rate of 414.0 GPixel/s, while the MI350P lists 0 MPixel/s. The W7900D includes 96 ray tracing cores and supports DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.4. The MI350P lists N/A for all three graphics APIs. The W7900D also runs at a higher base clock (1327 MHz versus 1000 MHz) but a slightly lower boost clock (2156 MHz versus 2200 MHz).

Thermal and power characteristics favor the W7900D for integration ease. The W7900D consumes 295 W with a suggested 600 W PSU, uses dual 8-pin connectors, and fits a triple-slot footprint at 280 mm length. The MI350P consumes 600 W, requires a 1000 W PSU, uses a single 16-pin connector, and is dual-slot at 267 mm length. The MI350P is shorter but draws twice the power. The W7900D is taller (110 mm versus 111 mm) and wider (51 mm versus 40 mm), but the power difference is more operationally significant.

Architecture Differences

The MI350P uses CDNA 4.0 architecture, designed for compute acceleration. The W7900D uses RDNA 3.0, a graphics-oriented architecture. This is the core divergence. CDNA 4.0 omits display outputs entirely, while RDNA 3.0 includes four DisplayPort 2.1 outputs. The MI350P's chip is labeled MI350 128CU, suggesting 128 compute units, while the W7900D uses Navi 31 with the codename Plum Bonito. The MI350P belongs to the Instinct (MIx) generation, with its predecessor listed as Radeon Instinct. The W7900D is part of the Radeon Pro Navi (Navi III Series) and its predecessor is Radeon Pro Vega.

Process technology differs significantly. The MI350P is fabricated on TSMC's 3 nm node, yielding a transistor density of 61.3 million per mm² across 73,000 million transistors on 1190 mm². The W7900D uses TSMC's 5 nm process, with 57,700 million transistors on 529 mm² and a density of 109.1 million per mm². The density difference indicates that RDNA 3.0 packs transistors more tightly per area, while CDNA 4.0 uses a larger die with more total transistors.

Memory architecture is another major split. The MI350P uses HBM3e with a 8192-bit bus and 8.19 TB/s bandwidth. The W7900D uses GDDR6 with a 384-bit bus and 864.0 GB/s bandwidth. The MI350P's memory clock is listed at 2000 MHz with 8 Gbps effective speed, while the W7900D runs memory at 2250 MHz with 18 Gbps effective. The MI350P's bandwidth advantage is roughly 9.5 times the W7900D's, based on the recorded figures.

Compute unit organization differs as well. The MI350P has 8192 shading units, 512 TMUs, and zero ROPs. The W7900D has 6144 shading units, 384 TMUs, and 192 ROPs. The MI350P reports no ray tracing cores, while the W7900D includes 96. Neither product lists tensor cores. The MI350P's texture rate is 1,126.4 GTexel/s versus 827.9 GTexel/s for the W7900D. The MI350P's FP32 and FP16 are both 36.04 TFLOPS with 1:1 ratio, and the W7900D's FP32 and FP16 are both 52.99 TFLOPS with 1:1 ratio.

Interface and connectivity also differ. The MI350P uses PCIe 5.0 x16, while the W7900D uses PCIe 4.0 x16. The MI350P has no display outputs. The W7900D has 3x DisplayPort 2.1 and 1x mini-DisplayPort 2.1. The MI350P is dual-slot with a single 16-pin power connector. The W7900D is triple-slot with two 8-pin connectors. Release dates are recorded: the MI350P launched on 2026-05-06 and the W7900D on 2025-09-24. The W7900D has an active production status, while the MI350P's production status is null in the database.

FAQ

Q: Which GPU has more memory bandwidth?

A: The AMD Instinct MI350P has 8.19 TB/s from 144 GB of HBM3e across an 8192-bit bus. The AMD Radeon PRO W7900D has 864.0 GB/s from 48 GB of GDDR6 across a 384-bit bus.

Q: Can either card output video to a display?

A: Only the Radeon PRO W7900D has display outputs, listed as 3x DisplayPort 2.1 and 1x mini-DisplayPort 2.1. The Instinct MI350P has no outputs and is not suitable for direct display connection.

Q: Which card has higher FP32 floating-point performance?

A: The Radeon PRO W7900D delivers 52.99 TFLOPS FP32, while the Instinct MI350P delivers 36.04 TFLOPS FP32. Both list FP16 at the same rate with a 1:1 ratio.

Q: What are the power requirements for each card?

A: The Instinct MI350P has a 600 W TDP and suggests a 1000 W PSU with a single 16-pin connector. The Radeon PRO W7900D has a 295 W TDP and suggests a 600 W PSU with two 8-pin connectors.

Q: Which card supports DirectX 12 Ultimate?

A: The Radeon PRO W7900D supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The Instinct MI350P lists N/A for DirectX, OpenGL, and Vulkan.

Q: How do the process nodes compare?

A: The Instinct MI350P is fabricated on TSMC's 3 nm process with 73,000 million transistors on a 1190 mm² die, giving 61.3M transistors per mm². The Radeon PRO W7900D uses TSMC's 5 nm process with 57,700 million transistors on a 529 mm² die, giving 109.1M transistors per mm².

Head-to-Head Benchmarks

The database records zero head-to-head benchmark results between the AMD Instinct MI350P and the AMD Radeon PRO W7900D. Both products show zero wins in the winsA and winsB fields, and the headToHeadBenchmarks array is empty. The average benchmark score for each is 0, and the percentileVsAllGpus is 50 for both, meaning neither has been measured against the broader GPU population in the database.

Without recorded benchmark scores, the comparison must rely on the specification data. The MI350P leads in memory bandwidth by a factor of 9.5, based on 8.19 TB/s versus 864.0 GB/s. It also leads in texture rate: 1,126.4 GTexel/s versus 827.9 GTexel/s. It has more shading units (8192 versus 6144) and more TMUs (512 versus 384). Its bus interface is PCIe 5.0 x16, one generation ahead of the W7900D's PCIe 4.0 x16.

The W7900D leads in FP32 compute by 47%, calculated from 52.99 TFLOPS versus 36.04 TFLOPS. It has 192 ROPs versus zero for the MI350P, and a pixel rate of 414.0 GPixel/s versus 0 MPixel/s. It includes 96 ray tracing cores, which the MI350P does not list. Its base clock is higher at 1327 MHz versus 1000 MHz, though the boost clock is lower at 2156 MHz versus 2200 MHz. Its memory clock is higher at 2250 MHz with 18 Gbps effective, versus 2000 MHz with 8 Gbps effective for the MI350P.

The W7900D also supports the full graphics API stack: DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.4. The MI350P lists N/A for all three. The W7900D has an active production status, while the MI350P has none recorded. The W7900D launched earlier on 2025-09-24, while the MI350P launched on 2026-05-06.

Physical dimensions differ: the MI350P is 267 mm long, 111 mm high, and 40 mm wide, occupying a dual-slot footprint. The W7900D is 280 mm long, 110 mm high, and 51 mm wide, requiring a triple-slot footprint. The MI350P uses a single 16-pin power connector with a 600 W TDP and 1000 W suggested PSU. The W7900D uses two 8-pin connectors with a 295 W TDP and 600 W suggested PSU.

The data shows two products with no overlapping benchmark results, so the "wins" in any head-to-head sense are defined by architectural suitability. The MI350P wins for memory-bound compute workloads, given its 144 GB capacity and 8.19 TB/s bandwidth. The W7900D wins for graphics output, rasterization, and ray tracing workloads, given its ROPs, pixel rate, ray tracing cores, and display outputs. The FP32 advantage of the W7900D (52.99 TFLOPS versus 36.04 TFLOPS) indicates it is the faster card for general compute that fits in 48 GB of memory, but the MI350P's memory subsystem is in a different class. The absence of recorded benchmarks means these conclusions are drawn from the specification sheet only, not from measured performance data.