NVIDIA H20 vs NVIDIA RTX 3500 Mobile Ada Generation Comparison

Where Each One Wins

The benchmark data shows a complete split with no overlapping wins. The NVIDIA H20 records zero benchmark victories, while the NVIDIA RTX 3500 Mobile Ada Generation also records zero benchmark victories. Neither part has a head-to-head benchmark entry in the database. This means the comparison rests entirely on architectural specifications and measured capability fields rather than direct performance tests.

The H20 is positioned as a server accelerator. It uses the GH100 chip on the Hopper architecture, built for the Server Hopper (Hxx) generation. The RTX 3500 Mobile Ada Generation belongs to the GeForce 30-series line, uses the AD104 chip on Ada Lovelace, and targets the Ada-MW mobile workstation segment. The use-case split is clear from the form factors: the H20 is an SXM Module with no display outputs, while the RTX 3500 Mobile is an IGP (integrated graphics processor) with portable-device-dependent display outputs.

The H20 delivers compute-oriented features: 96 GB of HBM3 memory, a 6144-bit bus, and 4.03 TB/s of bandwidth. The RTX 3500 Mobile delivers graphics-oriented features: 12 GB of GDDR6 memory, a 192-bit bus, 432.0 GB/s of bandwidth, and full DirectX 12 Ultimate support. The data indicates the H20 wins in raw compute throughput and memory capacity, while the RTX 3500 Mobile wins in graphics API compatibility and pixel output rate.

Architecture Differences

The two GPUs share a 5 nm process node and the TSMC foundry, but diverge sharply afterward. The H20 has 80,000 million transistors on an 814 mm² die, yielding a transistor density of 98.3M per mm². The RTX 3500 Mobile has 35,800 million transistors on a 294 mm² die, yielding a higher density of 121.8M per mm². The H20 uses the GH100 chip and Hopper architecture, while the RTX 3500 Mobile uses the AD104 chip and Ada Lovelace architecture.

The H20 is a server-part-only design. Its API support is listed as N/A for DirectX, OpenGL, and Vulkan. It has no display outputs. The RTX 3500 Mobile supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. It has portable-device-dependent display outputs.

The memory subsystems could not be more different. The H20 uses HBM3 with 96 GB capacity, a 6144-bit bus, and 4.03 TB/s bandwidth. The RTX 3500 Mobile uses GDDR6 with 12 GB capacity, a 192-bit bus, and 432.0 GB/s bandwidth. The H20 has eight times the memory capacity and over nine times the bandwidth.

Clock behavior also differs. The H20 has a base clock of 1830 MHz and a boost clock of 1980 MHz. The RTX 3500 Mobile has a base clock of 1110 MHz and a boost clock of 1545 MHz. The H20's memory runs at 1313 MHz (5.3 Gbps effective), while the RTX 3500 Mobile's memory runs at 2250 MHz (18 Gbps effective).

The power envelope is another major split. The H20 has a TDP of 500 W with a suggested PSU of 900 W. The RTX 3500 Mobile has a TDP of 100 W with no suggested PSU listed. The H20 is an SXM Module, while the RTX 3500 Mobile is an IGP with no power connectors. The H20 uses PCIe 5.0 x16, while the RTX 3500 Mobile uses PCIe 4.0 x16.

Head-to-Head Benchmarks

The database contains no head-to-head benchmark entries for this pair. The wins count is zero for both sides. This absence of measured data means the comparison must rely on the recorded specification fields and derived rate values.

The H20's FP32 throughput is 39.54 TFLOPS. The RTX 3500 Mobile's FP32 throughput is 15.82 TFLOPS. The H20 is 2.5 times higher in FP32 compute. The FP16 figures show a different ratio: the H20 delivers 79.07 TFLOPS with a 2:1 ratio, while the RTX 3500 Mobile delivers 15.82 TFLOPS with a 1:1 ratio. The H20's FP16 rate is exactly five times the RTX 3500 Mobile's FP16 rate.

Texture rate favors the H20. It delivers 617.8 GTexel/s, versus 247.2 GTexel/s for the RTX 3500 Mobile. The H20 is 2.5 times higher. Pixel rate favors the RTX 3500 Mobile. It delivers 98.88 GPixel/s, versus 47.52 GPixel/s for the H20. The RTX 3500 Mobile is 2.08 times higher in pixel throughput.

Shader core counts reinforce the compute split. The H20 has 9984 shading units, 312 TMUs, and 24 ROPs. The RTX 3500 Mobile has 5120 shading units, 160 TMUs, and 64 ROPs. The H20 has 1.95 times the shading units and 1.95 times the TMUs, but only 0.375 times the ROPs. The RTX 3500 Mobile has 40 ray tracing cores and 160 tensor cores. The H20 lists no ray tracing core count but has 312 tensor cores.

Memory bandwidth is the largest single gap. The H20's 4.03 TB/s is 9.33 times the RTX 3500 Mobile's 432.0 GB/s. The bus width gap is even wider: 6144 bit versus 192 bit, a factor of 32. The H20's HBM3 memory operates at a much lower effective data rate of 5.3 Gbps, while the RTX 3500 Mobile's GDDR6 operates at 18 Gbps effective.

FAQ

Q: Which GPU has more compute throughput?

A: The NVIDIA H20. Its FP32 rate is 39.54 TFLOPS, which is 2.5 times the RTX 3500 Mobile's 15.82 TFLOPS. The FP16 gap is larger: 79.07 TFLOPS versus 15.82 TFLOPS, a factor of five.

Q: How does memory capacity compare?

A: The H20 has 96 GB of HBM3 memory. The RTX 3500 Mobile has 12 GB of GDDR6 memory. The H20 has eight times the capacity. Bandwidth is 4.03 TB/s for the H20 versus 432.0 GB/s for the RTX 3500 Mobile, a 9.33 times difference.

Q: Which GPU supports graphics APIs?

A: Only the RTX 3500 Mobile. It supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The H20 lists N/A for all three APIs and has no display outputs.

Q: What are the pixel rate and texture rate differences?

A: The RTX 3500 Mobile wins in pixel rate with 98.88 GPixel/s, more than double the H20's 47.52 GPixel/s. The H20 wins in texture rate with 617.8 GTexel/s, which is 2.5 times the RTX 3500 Mobile's 247.2 GTexel/s.

Q: How do clock speeds compare?

A: The H20 has a base clock of 1830 MHz and a boost clock of 1980 MHz. The RTX 3500 Mobile has a base clock of 1110 MHz and a boost clock of 1545 MHz. The H20 runs at higher core clocks, but the RTX 3500 Mobile's memory clock of 2250 MHz (18 Gbps effective) exceeds the H20's memory clock of 1313 MHz (5.3 Gbps effective).

Q: What is the power consumption difference?

A: The H20 has a TDP of 500 W and a suggested PSU of 900 W. The RTX 3500 Mobile has a TDP of 100 W and no suggested PSU. The H20 is an SXM Module, while the RTX 3500 Mobile is an IGP with no power connectors.

Specification Differences

| Specification | NVIDIA H20 | NVIDIA RTX 3500 Mobile Ada Generation |

|---|---|---|

| Architecture | Hopper | Ada Lovelace |

| Generation | Server Hopper (Hxx) | Ada-MW |

| Chip | GH100 | AD104 |

| Transistors | 80,000 million | 35,800 million |

| Die Size | 814 mm² | 294 mm² |

| Transistor Density | 98.3M / mm² | 121.8M / mm² |

| Base Clock | 1830 MHz | 1110 MHz |

| Boost Clock | 1980 MHz | 1545 MHz |

| Memory Clock | 1313 MHz, 5.3 Gbps effective | 2250 MHz, 18 Gbps effective |

| Memory Size | 96 GB | 12 GB |

| Memory Type | HBM3 | GDDR6 |

| Memory Bus Width | 6144 bit | 192 bit |

| Memory Bandwidth | 4.03 TB/s | 432.0 GB/s |

| Shading Units | 9984 | 5120 |

| TMUs | 312 | 160 |

| ROPs | 24 | 64 |

| RT Cores | Not listed | 40 |

| Tensor Cores | 312 | 160 |

| Pixel Rate | 47.52 GPixel/s | 98.88 GPixel/s |

| Texture Rate | 617.8 GTexel/s | 247.2 GTexel/s |

| FP32 | 39.54 TFLOPS | 15.82 TFLOPS |

| FP16 | 79.07 TFLOPS (2:1) | 15.82 TFLOPS (1:1) |

| TDP | 500 W | 100 W |

| Slot Width | SXM Module | IGP |

| Power Connectors | Not listed | None |

| Suggested PSU | 900 W | Not listed |

| Bus Interface | PCIe 5.0 x16 | PCIe 4.0 x16 |

| Display Outputs | No outputs | Portable Device Dependent |

| DirectX | N/A | 12 Ultimate (12_2) |

| OpenGL | N/A | 4.6 |

| Vulkan | N/A | 1.4 |

| Release Date | 2024-01-31 | 2023-03-20 |

| Predecessor | Server Ada | Ampere-MW |

| Successor | Server Blackwell | Blackwell-MW |

The H20 and RTX 3500 Mobile share a 5 nm TSMC process but differ in nearly every other dimension. The H20 is a server compute accelerator with massive memory and high FP32 throughput. The RTX 3500 Mobile is a mobile workstation GPU with full graphics API support and a higher pixel rate. The database records no benchmark wins for either part, and no head-to-head benchmark data exists. The recorded measurements show the H20 dominates in compute, memory capacity, bandwidth, and texture rate, while the RTX 3500 Mobile dominates in pixel rate, ROP count, API support, and transistor density.