NVIDIA H20 vs NVIDIA RTX PRO 4000 Blackwell SFF Comparison

Head-to-Head Benchmarks

The recorded database contains only one benchmark result for the NVIDIA RTX PRO 4000 Blackwell SFF, while the NVIDIA H20 has no benchmark entries listed. The single available score for the RTX PRO 4000 Blackwell SFF comes from the 3DMark Steel Nomad DX12 test, where it scored 2910 points. This places it at the 19th percentile among all GPUs in the database, meaning roughly 81 percent of recorded graphics cards score higher in that specific workload.

Comparing that score to its nearest rivals in the database provides useful context. The RTX PRO 4000 Blackwell SFF sits within 0.6 percent of four other NVIDIA cards. The NVIDIA GeForce RTX 4060 Ti 16 GB scores 2907, which is 0.1 percent below the RTX PRO 4000. The GeForce RTX 4060 Ti 8 GB scores 2913, putting it 0.1 percent ahead. The NVIDIA Quadro P600 scores 2923, leading by 0.4 percent. The NVIDIA GeForce RTX 4010 scores 2893, trailing by 0.6 percent. These delta values indicate that the RTX PRO 4000 Blackwell SFF delivers performance statistically indistinguishable from those four cards in this particular test, with the entire spread covering less than 1 percent.

For the H20, no benchmark scores or nearest rival comparisons exist in the database. The avgBenchmarkScore field for the H20 is 0, and its percentileVsAllGpus is 50. This percentile value should not be interpreted as a performance measurement, since no actual benchmark data supports it. The lack of benchmark entries means the database cannot quantify the H20's direct performance against the RTX PRO 4000 Blackwell SFF in any shared test. The head-to-head benchmark array is empty, and the win counts for both cards are zero.

The only numerical comparison available comes from theoretical specifications, not measured results. The H20's FP32 throughput is 39.54 TFLOPS compared to 24.05 TFLOPS for the RTX PRO 4000 Blackwell SFF, indicating the H20 has 64.4 percent higher raw single-precision compute on paper. The H20's FP16 throughput is 79.07 TFLOPS with a 2:1 ratio, while the RTX PRO 4000 Blackwell SFF delivers 24.05 TFLOPS with a 1:1 ratio. The H20's texture rate reaches 617.8 GTexel/s versus 375.8 GTexel/s for the RTX PRO 4000. However, the RTX PRO 4000 Blackwell SFF counters with a pixel rate of 128.8 GPixel/s, substantially higher than the H20's 47.52 GPixel/s. These are theoretical peak rates, not measured application performance.

The Verdict

Based strictly on the recorded data, the choice between these two cards depends entirely on the workload profile. The H20 targets server compute environments with large memory capacity and high FP32/FP16 throughput. It has no display outputs, no graphics API support, and comes as an SXM module. The RTX PRO 4000 Blackwell SFF targets workstation tasks with a dual-slot form factor, four mini-DisplayPort outputs, full DirectX 12 Ultimate support, and a much lower 70 W TDP.

The H20 offers 96 GB of HBM3 memory with 4.03 TB/s bandwidth, making it suited for large datasets that exceed 24 GB. The RTX PRO 4000 Blackwell SFF provides only 24 GB of GDDR7 memory with 432.0 GB/s bandwidth, but it includes 70 ray tracing cores, which the H20 lacks. The H20 has 9984 shading units and 312 tensor cores, while the RTX PRO 4000 has 8960 shading units and 280 tensor cores. The H20 also has 312 TMUs versus 280, but the RTX PRO 4000 has 96 ROPs versus only 24 on the H20.

For actual measured performance, only the RTX PRO 4000 Blackwell SFF has a database entry, scoring 2910 in Steel Nomad DX12. The H20 has no recorded benchmark score. Users requiring verified graphics performance should note that the H20 cannot be assessed from the available data. The RTX PRO 4000's 19th percentile ranking indicates it is not a high-performance graphics card by database standards, but it matches the RTX 4060 Ti series within 0.1 percent.

Architecture Differences

The H20 uses the GH100 chip built on the Hopper architecture, belonging to the Server Hopper (Hxx) generation. The RTX PRO 4000 Blackwell SFF uses the GB203 chip built on Blackwell 2.0 architecture, belonging to the Blackwell PRO W (x000) generation. Both chips are fabricated on a 5 nm process at TSMC, but the transistor counts differ significantly. The H20 packs 80,000 million transistors on an 814 mm² die, yielding a transistor density of 98.3M per mm². The RTX PRO 4000 Blackwell SFF contains 45,600 million transistors on a 378 mm² die, achieving a higher density of 120.6M per mm².

The H20's predecessor is listed as Server Ada, and its successor is Server Blackwell. The RTX PRO 4000 Blackwell SFF's predecessor is Workstation Ada, with no successor recorded. The H20's architecture generation places it in the server product line, while the RTX PRO 4000 sits in the workstation PRO line. The H20 has no ray tracing cores listed, while the RTX PRO 4000 includes 70 RT cores. The H20's tensor core count is 312, while the RTX PRO 4000 has 280 tensor cores.

The H20 supports no graphics APIs: DirectX is N/A, OpenGL is N/A, and Vulkan is N/A. The RTX PRO 4000 supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. This architectural difference reflects the H20's compute-only design versus the RTX PRO 4000's full graphics capability. The H20's FP16 performance runs at a 2:1 ratio relative to FP32, indicating dedicated half-precision throughput, while the RTX PRO 4000 runs FP16 at a 1:1 ratio, meaning it processes half-precision at the same rate as single-precision.

Specification Differences

Memory capacity differs by 72 GB, with the H20 offering 96 GB of HBM3 on a 6144-bit bus versus the RTX PRO 4000's 24 GB of GDDR7 on a 192-bit bus. Memory bandwidth is 4.03 TB/s for the H20 versus 432.0 GB/s for the RTX PRO 4000, a 9.3 times difference. Memory clock speeds also differ: the H20 runs at 1313 MHz with 5.3 Gbps effective, while the RTX PRO 4000 runs at 1125 MHz with 18 Gbps effective.

Core counts diverge across every unit type. The H20 has 9984 shading units, 312 TMUs, 24 ROPs, and 312 tensor cores, with no RT cores. The RTX PRO 4000 has 8960 shading units, 280 TMUs, 96 ROPs, 280 tensor cores, and 70 RT cores. Clock speeds show a large difference: the H20 has a base clock of 1830 MHz and boost of 1980 MHz, while the RTX PRO 4000 has a base of 405 MHz and boost of 1342 MHz. Despite the lower clocks, the RTX PRO 4000's pixel rate of 128.8 GPixel/s exceeds the H20's 47.52 GPixel/s due to its higher ROP count.

Power requirements differ dramatically. The H20 has a 500 W TDP and requires a 900 W suggested PSU, while the RTX PRO 4000 has a 70 W TDP and needs only a 250 W suggested PSU. The H20 uses an SXM module slot width with no power connectors listed, while the RTX PRO 4000 is dual-slot with no power connectors required. The H20 has no display outputs, while the RTX PRO 4000 offers 4x mini-DisplayPort 2.1b outputs. Bus interfaces also differ: PCIe 5.0 x16 for the H20 versus PCIe 5.0 x8 for the RTX PRO 4000.

Physical dimensions are only recorded for the RTX PRO 4000: 167 mm length, 69 mm height, and 40 mm width. No dimensions are listed for the H20. Release dates differ by over a year: the H20 launched on January 31, 2024, while the RTX PRO 4000 launched on August 10, 2025. The RTX PRO 4000's production status is Active, and the H20 is also listed as Active.

FAQ

Q: Which card has more memory bandwidth?

A: The NVIDIA H20 provides 4.03 TB/s from 96 GB of HBM3 on a 6144-bit bus. The RTX PRO 4000 Blackwell SFF provides 432.0 GB/s from 24 GB of GDDR7 on a 192-bit bus.

Q: Does the H20 support graphics APIs?

A: No. The H20 lists DirectX, OpenGL, and Vulkan all as N/A. The RTX PRO 4000 Blackwell SFF supports DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.4.

Q: What is the measured benchmark score for each card?

A: Only the RTX PRO 4000 Blackwell SFF has a recorded score: 2910 in 3DMark Steel Nomad DX12, placing it at the 19th percentile. The H20 has no benchmark entries in the database.

Q: How much power does each card consume?

A: The H20 has a 500 W TDP and suggests a 900 W PSU. The RTX PRO 4000 Blackwell SFF has a 70 W TDP and suggests a 250 W PSU.

Q: Which card has ray tracing capability?

A: The RTX PRO 4000 Blackwell SFF includes 70 ray tracing cores. The H20 lists no RT cores.

Q: How do the transistor densities compare?

A: The H20 achieves 98.3M transistors per mm² on an 814 mm² die. The RTX PRO 4000 achieves 120.6M transistors per mm² on a 378 mm² die.

Where Each One Wins

The H20 wins decisively in memory capacity and bandwidth. Its 96 GB of HBM3 with 4.03 TB/s bandwidth dwarfs the RTX PRO 4000's 24 GB GDDR7 with 432.0 GB/s. For workloads that require holding large models or datasets in memory, the H20 provides 4 times the capacity and roughly 9.3 times the bandwidth. The H20 also wins on theoretical compute throughput: 39.54 TFLOPS FP32 versus 24.05 TFLOPS, and 79.07 TFLOPS FP16 versus 24.05 TFLOPS. Its texture rate of 617.8 GTexel/s exceeds the RTX PRO 4000's 375.8 GTexel/s.

The RTX PRO 4000 Blackwell SFF wins in graphics-oriented capabilities. Its 128.8 GPixel/s pixel rate is 2.7 times higher than the H20's 47.52 GPixel/s. It includes 70 RT cores that the H20 lacks entirely. It supports DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.4, while the H20 supports none. It provides four mini-DisplayPort outputs, making it usable in display-connected workstations. Its 96 ROPs versus 24 ROPs explains its pixel throughput advantage.

The RTX PRO 4000 also wins on power efficiency and physical integration. Its 70 W TDP is dramatically lower than the H20's 500 W, and its 250 W suggested PSU is far below the H20's 900 W requirement. It fits in a dual-slot configuration with recorded dimensions of 167 mm by 69 mm by 40 mm, whereas the H20 uses an SXM module form factor. The RTX PRO 4000 requires no power connectors, while the H20's connector situation is unlisted but its power draw necessitates external power delivery.

In the single recorded benchmark, the RTX PRO 4000 scores 2910 and ranks at the 19th percentile. Its nearest rivals, the RTX 4060 Ti variants, score within 0.1 percent. The H20 has no measured benchmark to compare. For users who need verified graphics performance, the RTX PRO 4000 is the only card with data. For users who need maximum memory and compute throughput in a server environment, the H20's specifications point to that role, but the database provides no performance confirmation.