NVIDIA H20 vs NVIDIA H20 NVL16 Comparison

The Verdict

The NVIDIA H20 and NVIDIA H20 NVL16 are functionally identical accelerators in nearly every measurable compute aspect. Both use the GH100 chip, both are built on TSMC 5 nm, both carry 96 GB of HBM3 memory, and both deliver identical FP32, FP16, pixel, and texture throughput figures. The database records no benchmark scores for either part, and the head-to-head benchmark list is empty, meaning there are zero recorded wins for either accelerator.

The sole meaningful distinction in the recorded data is power consumption. The NVIDIA H20 carries a 500 W TDP, while the NVIDIA H20 NVL16 operates at 400 W. This 100 W difference, combined with identical performance specifications, indicates that the NVL16 variant is designed for environments where thermal or power ceilings are more restrictive. The suggested PSU rating reflects this: 900 W for the H20 versus 800 W for the NVL16.

From the data alone, the choice is straightforward. Systems with ample power delivery and cooling capacity can use either part with no performance penalty expected. Systems constrained to lower power envelopes should select the H20 NVL16, as it delivers the same recorded compute capabilities at a reduced power draw. Neither part shows any benchmark advantage over the other, so workload selection between them is purely a matter of infrastructure compatibility.

Architecture Differences

Both accelerators share the same underlying architecture. The chip is GH100, the architecture is Hopper, and the generation is Server Hopper (Hxx). The process node is TSMC 5 nm, with a die size of 814 mm² and 80,000 million transistors. Transistor density calculates to 98.3M per mm². These figures are identical across both entries.

Clock speeds match exactly. Base clock is 1830 MHz, boost clock is 1980 MHz, and memory clock is 1313 MHz with 5.3 Gbps effective. The memory subsystem is identical: 96 GB of HBM3 on a 6144-bit bus, delivering 4.03 TB/s of bandwidth.

Compute resources are also identical. Both have 9984 shading units, 312 TMUs, 24 ROPs, and 312 tensor cores. FP32 throughput is 39.54 TFLOPS, and FP16 throughput is 79.07 TFLOPS (2:1). Pixel rate is 47.52 GPixel/s, and texture rate is 617.8 GTexel/s.

The only architectural difference recorded is TDP. The H20 is rated at 500 W, the H20 NVL16 at 400 W. The suggested PSU differs accordingly: 900 W versus 800 W. Both use the SXM Module slot width, PCIe 5.0 x16 bus interface, and have no display outputs.

Where Each One Wins

The benchmark data contains no entries for either accelerator, and the head-to-head comparison is empty. WinsA is 0 and winsB is 0. Therefore, no workload category can be assigned as a win for either part based on measured performance.

What the data does show is an infrastructure-level distinction. The H20 NVL16, with its 400 W TDP, is positioned for dense deployments where power per accelerator is a limiting factor. The standard H20, at 500 W, fits systems with more generous power budgets. Both parts share identical compute specifications, so any performance difference in real deployments would stem from thermal management or power delivery constraints, not from the silicon itself.

The percentile ranking for both is 50, placing them at the midpoint of all GPUs in the database. The average benchmark score is 0 for both, confirming that no measured performance data exists to differentiate them.

FAQ

Q: What is the difference in power consumption between the two accelerators?

A: The NVIDIA H20 has a TDP of 500 W, while the NVIDIA H20 NVL16 has a TDP of 400 W. The suggested PSU is 900 W for the H20 and 800 W for the NVL16.

Q: Do the two accelerators have the same memory configuration?

A: Yes. Both have 96 GB of HBM3 memory, a 6144-bit bus width, and 4.03 TB/s of bandwidth.

Q: Are the clock speeds identical?

A: Yes. Both have a base clock of 1830 MHz, a boost clock of 1980 MHz, and a memory clock of 1313 MHz (5.3 Gbps effective).

Q: Which accelerator has more compute units?

A: Neither. Both have 9984 shading units, 312 TMUs, 24 ROPs, and 312 tensor cores.

Q: What is the release date difference?

A: The H20 was released on 2024-01-31, while the H20 NVL16 was released on 2025-09-01.

Q: Are there any recorded benchmark wins for either accelerator?

A: No. The database contains no benchmark scores for either part, and the head-to-head comparison is empty.

Head-to-Head Benchmarks

The head-to-head benchmark list is empty. There are no recorded scores, no wins for either accelerator, and no performance margins to report. The average benchmark score for both is 0, and the percentile vs all GPUs is 50 for both.

Given the identical specifications, this absence of benchmark data is consistent with what the hardware indicates. Both accelerators use the same GH100 chip, the same 5 nm process, the same 80,000 million transistors, and the same 814 mm² die. Compute throughput figures are identical across the board: FP32 at 39.54 TFLOPS, FP16 at 79.07 TFLOPS (2:1), pixel rate at 47.52 GPixel/s, and texture rate at 617.8 GTexel/s.

The only recorded difference is TDP and suggested PSU. The H20 NVL16 consumes 100 W less than the H20, which means that in power-constrained environments, the NVL16 would be the only viable choice. In environments with sufficient power delivery, both would operate at the same performance level.

The release dates differ by over a year, with the H20 arriving in January 2024 and the H20 NVL16 arriving in September 2025. This suggests the NVL16 variant was introduced later as a power-optimized revision, but the recorded data does not explain the reason for the revision beyond the TDP change.

Specification Differences

The following fields differ between the NVIDIA H20 and the NVIDIA H20 NVL16:

• TDP: 500 W (H20) versus 400 W (H20 NVL16)
• Suggested PSU: 900 W (H20) versus 800 W (H20 NVL16)
• Release Date: 2024-01-31 (H20) versus 2025-09-01 (H20 NVL16)

All other recorded specifications are identical: chip (GH100), architecture (Hopper), process node (5 nm), foundry (TSMC), transistors (80,000 million), die size (814 mm²), transistor density (98.3M / mm²), base clock (1830 MHz), boost clock (1980 MHz), memory clock (1313 MHz), memory size (96 GB), memory type (HBM3), memory bus width (6144 bit), memory bandwidth (4.03 TB/s), shading units (9984), TMUs (312), ROPs (24), tensor cores (312), pixel rate (47.52 GPixel/s), texture rate (617.8 GTexel/s), FP32 (39.54 TFLOPS), FP16 (79.07 TFLOPS), slot width (SXM Module), bus interface (PCIe 5.0 x16), display outputs (No outputs), production status (Active), predecessor (Server Ada), and successor (Server Blackwell). Neither part has a recorded launch MSRP.