AMD Radeon PRO W7400 vs NVIDIA H800 SXM5 Comparison

Head-to-Head Benchmarks

The recorded database contains no direct benchmark scores for either the AMD Radeon PRO W7400 or the NVIDIA H800 SXM5. Both entries show an average benchmark score of zero and zero wins in head-to-head comparisons. This absence of measured data means the comparison must rely entirely on the specification sheets provided.

The gap in raw compute throughput is substantial. The H800 SXM5 delivers 59.30 TFLOPS of FP32 compute, while the Radeon PRO W7400 produces 7.885 TFLOPS. That places the NVIDIA part at roughly 7.5 times the single-precision throughput of the AMD card. In FP16 workloads, the divergence widens further: the H800 SXM5 reaches 237.2 TFLOPS with a 4:1 ratio, whereas the Radeon PRO W7400 manages 7.885 TFLOPS at a 1:1 ratio. The H800's FP16 figure is approximately 30 times larger, reflecting the tensor-core-accelerated path that the AMD card lacks entirely.

Memory bandwidth tells a similar story. The H800 SXM5 features 3.36 TB/s of bandwidth across a 5120-bit HBM3 interface, compared to 172.8 GB/s on a 128-bit GDDR6 bus for the Radeon PRO W7400. The NVIDIA module moves data at roughly 19.4 times the rate of the AMD card. Capacity also differs by an order of magnitude: 80 GB versus 8 GB.

Pixel throughput is one area where the smaller AMD card posts a higher number. The Radeon PRO W7400 achieves 70.40 GPixel/s, while the H800 SXM5 records 42.12 GPixel/s. That is a 67% advantage for the AMD part in raw pixel fill. Texture rate tells the opposite story: the H800 SXM5 delivers 926.6 GTexel/s against 123.2 GTexel/s for the Radeon PRO W7400, a 7.5x margin.

Clock behavior also separates the two. The Radeon PRO W7400 has a base clock of 330 MHz and a boost clock of 1100 MHz. The H800 SXM5 runs at 1095 MHz base and 1755 MHz boost. Despite the lower clocks, the AMD card's pixel rate remains higher due to its 64 ROPs versus 24 ROPs on the NVIDIA part. The H800 SXM5 compensates with 528 TMUs versus 112, and 16896 shading units versus 1792.

The transistor and die data reveal different design philosophies. The H800 SXM5 packs 80,000 million transistors on an 814 mm² die using a 5 nm process at TSMC. The Radeon PRO W7400 uses 13,300 million transistors on a 204 mm² die at 6 nm. Transistor density favors the NVIDIA chip at 98.3M per mm² versus 65.2M per mm². The H800 SXM5's die is four times larger and carries six times the transistor count.

Power envelopes are radically different. The Radeon PRO W7400 carries a 55 W TDP and requires no power connectors, with a suggested PSU of 250 W. The H800 SXM5 draws 700 W, uses an 8-pin EPS connector, and suggests a 1100 W PSU. The NVIDIA module consumes nearly 13 times the power of the AMD card.

Where Each One Wins

The Radeon PRO W7400 wins in categories tied to traditional graphics output and low-power deployment. It offers four DisplayPort 2.1 outputs, while the H800 SXM5 has no display outputs at all. The AMD card is a single-slot 168 mm board that can run without auxiliary power, while the H800 SXM5 is an SXM module requiring an 8-pin EPS connection. The Radeon PRO W7400 also posts a higher pixel rate at 70.40 GPixel/s versus 42.12 GPixel/s, which matters for fill-rate-bound rasterization work. Its 64 ROPs give it a structural advantage in pixel operations. The AMD part supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4; the H800 SXM5 lists no graphics API support in the database.

The H800 SXM5 wins decisively in compute density, memory capacity, bandwidth, and FP16 throughput. Its 59.30 TFLOPS FP32 and 237.2 TFLOPS FP16 figures place it in a different performance class. The 528 tensor cores provide hardware acceleration for matrix workloads that the Radeon PRO W7400 cannot match, as it has no tensor core count listed. The 80 GB HBM3 pool with 3.36 TB/s bandwidth suits large-model inference and training datasets. The 5120-bit bus width gives the NVIDIA part a massive data path advantage. Its PCIe 5.0 x16 interface doubles the bus bandwidth of the AMD card's PCIe 4.0 x8 connection. The H800 SXM5 also uses a newer 5 nm process node, carries a 98.3M / mm² transistor density, and lists a server-oriented predecessor and successor in the database.

FAQ

Q: Which card has higher FP32 compute performance?

A: The NVIDIA H800 SXM5 delivers 59.30 TFLOPS of FP32 compute, compared to 7.885 TFLOPS for the AMD Radeon PRO W7400.

Q: How much memory does each card have?

A: The H800 SXM5 has 80 GB of HBM3 memory on a 5120-bit bus, while the Radeon PRO W7400 has 8 GB of GDDR6 on a 128-bit bus.

Q: Which card supports display output?

A: The AMD Radeon PRO W7400 provides 4x DisplayPort 2.1 outputs. The NVIDIA H800 SXM5 lists no display outputs.

Q: What is the power consumption difference?

A: The Radeon PRO W7400 has a 55 W TDP with no power connectors and a 250 W suggested PSU. The H800 SXM5 has a 700 W TDP, uses an 8-pin EPS connector, and suggests an 1100 W PSU.

Q: Which card has tensor cores?

A: The NVIDIA H800 SXM5 includes 528 tensor cores. The AMD Radeon PRO W7400 lists no tensor core count.

Q: How do the pixel rates compare?

A: The Radeon PRO W7400 achieves 70.40 GPixel/s, while the H800 SXM5 records 42.12 GPixel/s.

Specification Differences

The two cards differ across nearly every recorded specification. The process node differs: 6 nm for AMD versus 5 nm for NVIDIA. Transistor counts are 13,300 million versus 80,000 million, and die sizes are 204 mm² versus 814 mm². Transistor density is 65.2M / mm² versus 98.3M / mm².

Clock speeds differ at both ends. The Radeon PRO W7400 runs 330 MHz base and 1100 MHz boost, while the H800 SXM5 runs 1095 MHz base and 1755 MHz boost. Memory clocks also differ: 1350 MHz with 10.8 Gbps effective for AMD, 1313 MHz with 5.3 Gbps effective for NVIDIA.

Memory subsystems are entirely different. The AMD card uses 8 GB GDDR6 on a 128-bit bus with 172.8 GB/s bandwidth. The NVIDIA card uses 80 GB HBM3 on a 5120-bit bus with 3.36 TB/s bandwidth.

Compute units differ: 1792 shading units, 112 TMUs, 64 ROPs, and 28 ray tracing cores for AMD; 16896 shading units, 528 TMUs, 24 ROPs, and 528 tensor cores for NVIDIA. The AMD part lists no tensor cores, and the NVIDIA part lists no ray tracing cores.

Rates differ accordingly. The AMD card posts 70.40 GPixel/s and 123.2 GTexel/s. The NVIDIA card posts 42.12 GPixel/s and 926.6 GTexel/s.

Power and physical configuration differ sharply. The AMD card is a 55 W single-slot board with no power connectors, a 250 W suggested PSU, and dimensions of 168 mm by 69 mm by 20 mm. The NVIDIA card is a 700 W SXM module with an 8-pin EPS connector and a 1100 W suggested PSU; no dimensions are recorded.

Bus interfaces differ: PCIe 4.0 x8 for AMD versus PCIe 5.0 x16 for NVIDIA. Display outputs: 4x DisplayPort 2.1 for AMD, none for NVIDIA. API support: AMD lists DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4; NVIDIA lists no API values.

Release dates differ by over two years. The Radeon PRO W7400 has a release date of 2025-08-02, while the H800 SXM5 has a release date of 2023-03-20. The AMD card's predecessor is Radeon Pro Vega with no successor listed. The NVIDIA card's predecessor is Server Ada and its successor is Server Blackwell.

Architecture Differences

The AMD Radeon PRO W7400 uses the Navi 33 chip built on RDNA 3.0 architecture, with the codename Hotpink Bonefish. It belongs to the Radeon Pro Navi (Navi III Series) generation. The NVIDIA H800 SXM5 uses the GH100 chip built on Hopper architecture and belongs to the Server Hopper (Hxx) generation. No codename is recorded for the NVIDIA part.

Both chips come from TSMC, but at different nodes: 6 nm for AMD, 5 nm for NVIDIA. The transistor density difference, 65.2M / mm² versus 98.3M / mm², indicates the NVIDIA process packs more logic per area despite the larger die.

The compute architectures diverge in purpose. The Radeon PRO W7400 includes 28 ray tracing cores and supports DirectX 12 Ultimate, indicating a graphics-first design. The H800 SXM5 includes 528 tensor cores and no display pipeline, indicating a compute-first design. The FP16 ratio difference reinforces this: AMD runs FP16 at a 1:1 ratio with FP32, while NVIDIA runs FP16 at a 4:1 ratio, using tensor cores to accelerate half-precision workloads.

Memory architecture also reflects different target workloads. The AMD card uses GDDR6 with a 128-bit bus, a conventional graphics memory layout. The NVIDIA card uses HBM3 with a 5120-bit bus, a high-bandwidth stack design suited to data movement in large compute jobs. The 19.4x bandwidth advantage of the H800 SXM5 is a direct consequence of this architectural choice.

The physical form factors differ fundamentally. The Radeon PRO W7400 is a single-slot PCIe card with display connectors and no auxiliary power. The H800 SXM5 is an SXM module with no display outputs and a dedicated 8-pin EPS power connector. The AMD card's 55 W TDP allows passive or simple cooling, while the 700 W TDP of the NVIDIA module requires the power delivery and thermal infrastructure of a server chassis.

The generation and lifecycle data point to different product roads. The Radeon PRO W7400 follows the Radeon Pro Vega line and has no successor recorded. The H800 SXM5 follows the Server Ada line and is succeeded by Server Blackwell. The release dates place the NVIDIA part in an earlier cycle, with the AMD part arriving later in the database timeline.