NVIDIA H20 vs NVIDIA RTX 4500 Ada Generation Comparison

Head-to-Head Benchmarks

The recorded database contains no direct head-to-head benchmark entries for the NVIDIA H20 and the NVIDIA RTX 4500 Ada Generation. The H20 carries an average benchmark score of 0 with a 50th percentile ranking among all GPUs, while the RTX 4500 Ada Generation shows a 97th percentile position with an average benchmark score of 166,094 across two recorded tests.

The RTX 4500 Ada Generation delivers a Geekbench OpenCL score of 160,786 and a Geekbench Vulkan score of 171,401. These results place it 0.5% ahead of the NVIDIA RTX A5500 (165,217 average) and 0.7% ahead of the AMD Radeon PRO W7800 (164,894 average). The card trails the AMD Radeon Pro W6900X by 1.5% (168,574 average) and leads the NVIDIA A100 PCIe 40 GB by 2.2% (162,504 average).

Since the H20 has no benchmark scores recorded, the comparison relies entirely on architectural and specification differences rather than measured performance. The absence of head-to-head results means no win count can be assigned to either product. The data indicates the H20 lacks any benchmark entries, leaving its measured performance undefined in this database.

Architecture Differences

The NVIDIA H20 uses the GH100 chip built on the Hopper architecture, while the RTX 4500 Ada Generation uses the AD103 chip on the Ada Lovelace architecture. Both are fabricated by TSMC on a 5 nm process. The H20 belongs to the Server Hopper (Hxx) generation, whereas the RTX 4500 is part of the Workstation Ada generation.

Transistor counts differ substantially. The H20 contains 80,000 million transistors on a die size of 814 mm², resulting in a transistor density of 98.3 million per mm². The RTX 4500 Ada Generation has 45,900 million transistors on a 379 mm² die, giving a density of 121.1 million per mm². The Ada chip achieves higher density despite having fewer total transistors.

Clock speeds separate the two clearly. The H20 runs at a base clock of 1830 MHz with a boost clock of 1980 MHz. The RTX 4500 Ada Generation operates at 2070 MHz base and 2580 MHz boost, which are notably higher clock rates.

Memory architecture presents the largest divide. The H20 uses 96 GB of HBM3 memory on a 6144-bit bus, delivering 4.03 TB/s of bandwidth. The RTX 4500 Ada Generation uses 24 GB of GDDR6 memory on a 192-bit bus, with 432.0 GB/s bandwidth. The H20 provides four times the memory capacity and roughly nine times the bandwidth, though the RTX 4500's memory runs at 2250 MHz (18 Gbps effective) compared to the H20's 1313 MHz (5.3 Gbps effective).

Compute resources differ in configuration. The H20 has 9984 shading units, 312 texture mapping units, and 24 raster output units, with 312 tensor cores. The RTX 4500 Ada Generation has 7680 shading units, 240 TMUs, 80 ROPs, 60 ray tracing cores, and 240 tensor cores. The H20 carries more shading units and TMUs but far fewer ROPs. The RTX 4500 includes dedicated ray tracing cores, while the H20's ray tracing core count is not recorded.

Pixel and texture rates reflect these configurations. The H20 produces 47.52 GPixel/s pixel rate against 206.4 GPixel/s for the RTX 4500. Texture rates sit close: 617.8 GTexel/s for the H20 and 619.2 GTexel/s for the RTX 4500. FP32 compute is nearly identical at 39.54 TFLOPS for the H20 and 39.63 TFLOPS for the RTX 4500. FP16 performance diverges: the H20 reaches 79.07 TFLOPS at a 2:1 ratio, while the RTX 4500 delivers 39.63 TFLOPS at 1:1.

Power and physical specifications show substantial differences. The H20 is rated at 500 W TDP with a suggested 900 W PSU, and it uses an SXM Module slot width with no display outputs. The RTX 4500 Ada Generation draws 210 W TDP, suggests a 550 W PSU, uses a dual-slot form factor, has no external power connectors, and provides 4x DisplayPort 1.4a outputs. The RTX 4500 measures 245 mm in length and 112 mm in height.

Bus interfaces differ: the H20 uses PCIe 5.0 x16, while the RTX 4500 uses PCIe 4.0 x16. API support also separates them. The H20 lists N/A for DirectX, OpenGL, and Vulkan. The RTX 4500 supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4.

FAQ

Q: Which card has more memory bandwidth?

A: The NVIDIA H20 provides 4.03 TB/s of bandwidth using HBM3 memory on a 6144-bit bus. The RTX 4500 Ada Generation delivers 432.0 GB/s with GDDR6 memory on a 192-bit bus. The H20's bandwidth advantage is substantial.

Q: Does the RTX 4500 Ada Generation support ray tracing?

A: Yes. The RTX 4500 Ada Generation includes 60 ray tracing cores. The H20's ray tracing core count is not recorded in the database.

Q: What are the benchmark scores for the H20?

A: The database records no benchmark scores for the H20. Its average benchmark score is 0, and it holds a 50th percentile ranking among all GPUs. No Geekbench or other test results are listed.

Q: How does the RTX 4500 Ada Generation compare to its nearest rivals?

A: The RTX 4500 Ada Generation scores 165,217 average against the RTX A5500 (0.5% delta), 164,894 against the AMD Radeon PRO W7800 (0.7% delta), 168,574 against the AMD Radeon Pro W6900X (-1.5% delta), and 162,504 against the NVIDIA A100 PCIe 40 GB (2.2% delta). It outperforms all but the W6900X.

Q: Which card has more shading units?

A: The H20 has 9984 shading units, while the RTX 4500 Ada Generation has 7680. The H20 also carries more TMUs (312 versus 240) and tensor cores (312 versus 240), but the RTX 4500 has more ROPs (80 versus 24).

Q: What display outputs does each card provide?

A: The H20 provides no display outputs. The RTX 4500 Ada Generation offers 4x DisplayPort 1.4a connections.

The Verdict

The data indicates two products aimed at different operational contexts. The NVIDIA H20 targets server environments where memory capacity and bandwidth dominate. Its 96 GB HBM3 configuration with 4.03 TB/s bandwidth and 500 W TDP in an SXM Module form factor, combined with no display outputs, positions it for data-center workloads that prioritize large model residency and high throughput. The 79.07 TFLOPS FP16 performance at 2:1 ratio supports mixed-precision compute.

The NVIDIA RTX 4500 Ada Generation serves workstation needs with a 24 GB GDDR6 configuration, 210 W TDP, dual-slot design, and 4x DisplayPort 1.4a outputs. Its 206.4 GPixel/s pixel rate and 60 ray tracing cores support graphics rendering workloads. The recorded benchmark results place it at the 97th percentile among all GPUs, with an average score of 166,094. The Vulkan score of 171,401 exceeds the OpenCL score of 160,786, indicating stronger performance in graphics-oriented APIs.

The H20's 50th percentile ranking without benchmark data leaves its measured position undefined. Its architectural specifications suggest compute density for server deployments, but the database provides no empirical evidence of real-world performance. The RTX 4500 Ada Generation has verified scores that place it near the top of the recorded GPU population.

For buyers choosing between these, the specifications dictate the decision. The H20 offers 96 GB memory, 6144-bit bus width, and PCIe 5.0 x16 connectivity, suited for large-scale inference or training tasks that fit within its memory envelope. The RTX 4500 Ada Generation offers display outputs, ray tracing cores, and a lower 210 W power draw with a 550 W suggested PSU, suited for interactive graphics and workstation compute. The 121.1M per mm² transistor density of the Ada chip versus 98.3M per mm² for Hopper indicates the Ada architecture achieves higher integration efficiency.

The release dates show the RTX 4500 Ada Generation launched in 2023-08-08, while the H20 followed on 2024-01-31. Both remain Active in production status. The RTX 4500's predecessor is Workstation Ampere and successor is Blackwell PRO W. The H20's predecessor is Server Ada and successor is Server Blackwell.

Specification Differences

| Specification | NVIDIA H20 | NVIDIA RTX 4500 Ada Generation |

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

| Chip | GH100 | AD103 |

| Architecture | Hopper | Ada Lovelace |

| Generation | Server Hopper (Hxx) | Workstation Ada |

| Transistors | 80,000 million | 45,900 million |

| Die Size | 814 mm² | 379 mm² |

| Transistor Density | 98.3M / mm² | 121.1M / mm² |

| Base Clock | 1830 MHz | 2070 MHz |

| Boost Clock | 1980 MHz | 2580 MHz |

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

| Memory Size | 96 GB | 24 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 | 7680 |

| TMUs | 312 | 240 |

| ROPs | 24 | 80 |

| RT Cores | Not recorded | 60 |

| Tensor Cores | 312 | 240 |

| Pixel Rate | 47.52 GPixel/s | 206.4 GPixel/s |

| Texture Rate | 617.8 GTexel/s | 619.2 GTexel/s |

| FP32 | 39.54 TFLOPS | 39.63 TFLOPS |

| FP16 | 79.07 TFLOPS (2:1) | 39.63 TFLOPS (1:1) |

| TDP | 500 W | 210 W |

| Slot Width | SXM Module | Dual-slot |

| Power Connectors | Not recorded | None |

| Suggested PSU | 900 W | 550 W |

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

| Display Outputs | No outputs | 4x DisplayPort 1.4a |

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

| OpenGL | N/A | 4.6 |

| Vulkan | N/A | 1.4 |

| Dimensions | Not recorded | 245 mm, 112 mm |

| Release Date | 2024-01-31 | 2023-08-08 |

| Predecessor | Server Ada | Workstation Ampere |

| Successor | Server Blackwell | Blackwell PRO W |

| Percentile vs All GPUs | 50 | 97 |

| Average Benchmark Score | 0 | 166,094 |