NVIDIA H20 NVL16 vs NVIDIA RTX 3000 Mobile Ada Generation Comparison

Head-to-Head Benchmarks

The database contains no recorded benchmark scores for either the NVIDIA H20 NVL16 or the NVIDIA RTX 3000 Mobile Ada Generation. Both entries show an average benchmark score of 0, and each sits at the 50th percentile against all GPUs in the database. With no head-to-head benchmark entries, winsA and winsB are both 0, meaning the dataset provides no measured performance comparison between these two accelerators.

What the data does provide is a clear structural contrast. The H20 NVL16 is a server-class SXM module built on the Hopper architecture with the GH100 chip, while the RTX 3000 Mobile Ada Generation is an integrated graphics processor (IGP) for portable devices based on Ada Lovelace with the AD106 chip. Both use a 5 nm process at TSMC, but the transistor counts diverge sharply: the H20 NVL16 packs 80,000 million transistors across an 814 mm² die, while the RTX 3000 Mobile carries 22,900 million transistors on a 188 mm² die. The transistor density figures reflect this: 98.3M per mm² for the H20 NVL16 versus 121.8M per mm² for the mobile part.

Clock behavior differs as well. The H20 NVL16 runs a base clock of 1830 MHz and boosts to 1980 MHz. The RTX 3000 Mobile Ada Generation has a lower base of 1395 MHz and a boost of 1695 MHz. Memory configurations are entirely different classes: the H20 NVL16 uses 96 GB of HBM3 on a 6144-bit bus with 4.03 TB/s of bandwidth, whereas the RTX 3000 Mobile uses 8 GB of GDDR6 on a 128-bit bus with 256.0 GB/s. The memory clock for the H20 NVL16 is 1313 MHz (5.3 Gbps effective), while the mobile part runs at 2000 MHz (16 Gbps effective).

Shading unit counts heavily favor the server part: the H20 NVL16 has 9984 shading units, 312 TMUs, and 24 ROPs, against 4608 shading units, 144 TMUs, and 48 ROPs for the RTX 3000 Mobile. The H20 NVL16 also includes 312 tensor cores, while the mobile chip has 144 tensor cores. The RTX 3000 Mobile additionally features 36 ray tracing cores, a specification not listed for the H20 NVL16.

Pixel and texture rates tell a nuanced story. The H20 NVL16 achieves 47.52 GPixel/s and 617.8 GTexel/s. The RTX 3000 Mobile reaches a higher pixel rate of 81.36 GPixel/s but a lower texture rate of 244.1 GTexel/s. This reflects the different ROP and TMU allocations: the mobile part has twice the ROP count (48 versus 24) but fewer than half the TMUs (144 versus 312).

Compute throughput is lopsided. The H20 NVL16 delivers 39.54 TFLOPS of FP32 and 79.07 TFLOPS of FP16 (2:1 ratio). The RTX 3000 Mobile delivers 15.62 TFLOPS of FP32 and 15.62 TFLOPS of FP16 (1:1 ratio). The H20 NVL16 thus provides roughly 2.5 times the FP32 throughput and about 5 times the FP16 throughput of the mobile part.

Power envelopes are equally divergent. The H20 NVL16 has a 400 W TDP with a suggested PSU of 800 W and uses an SXM module slot. The RTX 3000 Mobile has a 115 W TDP, uses no power connectors, and is an IGP. The H20 NVL16 connects via PCIe 5.0 x16, while the RTX 3000 Mobile uses PCIe 4.0 x16.

Where Each One Wins

Based strictly on the recorded specifications, the H20 NVL16 wins in total compute capacity. Its FP32 figure of 39.54 TFLOPS is 2.53 times the 15.62 TFLOPS of the RTX 3000 Mobile, and its FP16 output of 79.07 TFLOPS is more than 5 times the mobile part's 15.62 TFLOPS. Texture throughput also favors the server accelerator: 617.8 GTexel/s versus 244.1 GTexel/s, a 2.53 times advantage. The H20 NVL16 further dominates memory capacity and bandwidth, offering 96 GB against 8 GB and 4.03 TB/s against 256.0 GB/s, a 15.7 times bandwidth ratio.

The RTX 3000 Mobile Ada Generation wins on pixel throughput. Its 81.36 GPixel/s exceeds the H20 NVL16's 47.52 GPixel/s by a factor of 1.71. This comes from its higher ROP count of 48 versus 24. The mobile part also leads in API support: it lists DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4, while the H20 NVL16 lists N/A for all three APIs. The RTX 3000 Mobile also includes 36 ray tracing cores, a feature absent from the H20 NVL16's listed specifications.

The RTX 3000 Mobile wins on transistor density, at 121.8M per mm² versus 98.3M per mm² for the H20 NVL16, indicating a more compact design. The mobile part also has a higher memory clock at 2000 MHz (16 Gbps effective) against 1313 MHz (5.3 Gbps effective), though this does not translate to higher bandwidth due to the narrower 128-bit bus.

The H20 NVL16 wins on interface generation, using PCIe 5.0 x16 versus PCIe 4.0 x16. The server part also has a higher boost clock at 1980 MHz versus 1695 MHz, and a higher base clock at 1830 MHz versus 1395 MHz.

Neither part has a recorded launch MSRP in the database, so no price-based differentiation is possible.

The Verdict

The data indicates two accelerators built for different deployment contexts, not direct competitors. The H20 NVL16 is a server module with a 400 W TDP, no display outputs, and no consumer API support, which points to datacenter or high-performance computing workloads. The RTX 3000 Mobile Ada Generation is an IGP with a 115 W TDP, display outputs described as "portable device dependent," and full DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.4 support, which points to laptop or mobile workstation use.

For compute-heavy tasks, the H20 NVL16 is the clear choice based on the recorded figures: 39.54 TFLOPS FP32, 79.07 TFLOPS FP16, 4.03 TB/s memory bandwidth, and 96 GB of HBM3 capacity. For graphics-oriented tasks on portable hardware, the RTX 3000 Mobile is the only option that supports rendering APIs and includes ray tracing cores.

The RTX 3000 Mobile's higher pixel rate of 81.36 GPixel/s and its ray tracing capability make it suited for real-time graphics. The H20 NVL16's lack of display outputs and API support means it cannot drive a display directly, and its role is confined to computation.

The H20 NVL16 is listed as an active product with a release date of 2025-09-01, succeeding "Server Ada" and preceding "Server Blackwell." The RTX 3000 Mobile is also active, released 2023-03-20, succeeding "Ampere-MW" and preceding "Blackwell-MW." Both are current in the database, but their form factors and feature sets place them in separate categories.

FAQ

Q: Which GPU has more FP32 compute power?

A: The NVIDIA H20 NVL16 delivers 39.54 TFLOPS of FP32, compared to 15.62 TFLOPS for the NVIDIA RTX 3000 Mobile Ada Generation, a 2.53 times advantage.

Q: What memory configurations do these two GPUs use?

A: The H20 NVL16 uses 96 GB of HBM3 on a 6144-bit bus with 4.03 TB/s bandwidth. The RTX 3000 Mobile uses 8 GB of GDDR6 on a 128-bit bus with 256.0 GB/s bandwidth.

Q: Do both GPUs support the same graphics APIs?

A: No. The RTX 3000 Mobile supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The H20 NVL16 lists N/A for DirectX, OpenGL, and Vulkan.

Q: Which GPU has ray tracing cores?

A: Only the RTX 3000 Mobile Ada Generation lists 36 ray tracing cores. The H20 NVL16 entry does not include a ray tracing core count.

Q: What are the power requirements for each?

A: The H20 NVL16 has a 400 W TDP and suggests an 800 W PSU. The RTX 3000 Mobile has a 115 W TDP and no power connectors, with no suggested PSU listed.

Q: What bus interfaces do they use?

A: The H20 NVL16 uses PCIe 5.0 x16, while the RTX 3000 Mobile uses PCIe 4.0 x16.

Architecture Differences

The two accelerators come from different NVIDIA architectures. The H20 NVL16 is built on the Hopper architecture with the GH100 chip, belonging to the "Server Hopper (Hxx)" generation. The RTX 3000 Mobile Ada Generation uses the Ada Lovelace architecture with the AD106 chip, from the "Ada-MW" generation. Both are fabricated on a 5 nm process at TSMC, but the server part is substantially larger: 814 mm² die size versus 188 mm², with 80,000 million transistors versus 22,900 million. The mobile part achieves higher transistor density at 121.8M per mm², versus 98.3M per mm² for the server part.

Memory architecture differs fundamentally. The H20 NVL16 uses HBM3 stacked memory with a 6144-bit interface, enabling 4.03 TB/s of bandwidth and a 96 GB capacity. The RTX 3000 Mobile uses discrete GDDR6 on a 128-bit bus, providing 256.0 GB/s and 8 GB capacity. The memory clock rates reflect the different technologies: 1313 MHz (5.3 Gbps effective) for HBM3 versus 2000 MHz (16 Gbps effective) for GDDR6.

Compute unit layouts diverge in ROP count. The H20 NVL16 has 24 ROPs, while the RTX 3000 Mobile has 48 ROPs, which explains the mobile part's higher pixel rate of 81.36 GPixel/s versus 47.52 GPixel/s. The server part compensates with 312 TMUs against 144, yielding 617.8 GTexel/s against 244.1 GTexel/s.

The H20 NVL16 has 9984 shading units and 312 tensor cores. The RTX 3000 Mobile has 4608 shading units and 144 tensor cores. The FP16 execution ratio differs: the H20 NVL16 runs FP16 at a 2:1 rate relative to FP32, achieving 79.07 TFLOPS, while the RTX 3000 Mobile runs FP16 at 1:1, matching its FP32 figure of 15.62 TFLOPS.

The H20 NVL16 uses an SXM Module slot with a 400 W TDP and suggests an 800 W PSU. The RTX 3000 Mobile is an IGP with a 115 W TDP and no power connectors. The server part uses PCIe 5.0 x16; the mobile part uses PCIe 4.0 x16. The H20 NVL16 has no display outputs, while the RTX 3000 Mobile's display outputs are described as "portable device dependent." The H20 NVL16's API support is listed as N/A for DirectX, OpenGL, and Vulkan, whereas the RTX 3000 Mobile supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4.

Release timing also differs: the H20 NVL16 is dated 2025-09-01, while the RTX 3000 Mobile is dated 2023-03-20. The H20 NVL16 lists its predecessor as "Server Ada" and successor as "Server Blackwell." The RTX 3000 Mobile lists "Ampere-MW" as predecessor and "Blackwell-MW" as successor. Both parts are marked as active in production status.