NVIDIA H20 vs NVIDIA RTX A1000 Comparison

The NVIDIA H20 and NVIDIA RTX A1000 are both active NVIDIA GPUs, but the recorded data places them in separate categories. The H20 is a Hopper-generation server module with no benchmark entries, while the RTX A1000 is an Ampere-generation workstation card with three benchmark scores. In the specification fields, the H20 leads in compute throughput, memory capacity, memory bandwidth, and tensor core count; the RTX A1000 leads in recorded benchmarks, display outputs, API support, and lower power draw.

Head-to-Head Benchmarks

The database has no direct head-to-head benchmark entry pairing the H20 with the RTX A1000. The H20 has no benchmark entries and an average benchmark score of 0, placing it at the 50th percentile among all GPUs in the database. The RTX A1000 has three recorded benchmark scores: 969 in 3DMark Steel Nomad DX12, 52078 in Geekbench OpenCL, and 49574 in Geekbench Vulkan. Its average benchmark score is 34207, and it sits at the 79th percentile among all GPUs.

Because the H20 has no recorded benchmark scores, the RTX A1000 is the only one of the two with benchmark wins in the database. The A1000's average of 34207 is 0.2% above the NVIDIA RTX A2000 12 GB (34154), 0.2% above the AMD Radeon RX 560 XT (34133), 0.6% above the AMD Radeon RX 480 (33997), and 0.4% below the NVIDIA TITAN V (34355). The Geekbench OpenCL score of 52078 is the highest recorded score for the A1000, followed by 49574 in Geekbench Vulkan and 969 in 3DMark Steel Nomad DX12.

Architecture Differences

The two GPUs use different chips, architectures, and manufacturing processes. The H20 uses the GH100 chip with Hopper architecture, fabricated by TSMC on a 5 nm process, with 80,000 million transistors on an 814 mm² die. The RTX A1000 uses the GA107 chip with Ampere architecture, fabricated by Samsung on an 8 nm process, with 8,700 million transistors on a 200 mm² die. Transistor density is 98.3M / mm² for the H20 and 43.5M / mm² for the RTX A1000. The generation labels also differ: the H20 is from Server Hopper (Hxx), while the RTX A1000 is from Workstation Ampere (Ax000).

The core layouts are far apart. The H20 has 9984 shading units, 312 TMUs, 24 ROPs, and 312 tensor cores; its RT core count is not recorded. The RTX A1000 has 2304 shading units, 72 TMUs, 32 ROPs, 18 RT cores, and 72 tensor cores. FP32 throughput is 39.54 TFLOPS for the H20 versus 6.737 TFLOPS for the RTX A1000. FP16 throughput is 79.07 TFLOPS (2:1) for the H20 versus 6.737 TFLOPS (1:1) for the RTX A1000. Pixel rates are close at 47.52 GPixel/s and 46.78 GPixel/s, but texture rates differ sharply at 617.8 GTexel/s and 105.3 GTexel/s.

Memory architecture is also distinct. The H20 uses 96 GB HBM3 on a 6144-bit bus with 4.03 TB/s bandwidth. The RTX A1000 uses 8 GB GDDR6 on a 128-bit bus with 192.0 GB/s bandwidth. The H20 reports no API support (DirectX, OpenGL, and Vulkan are all N/A), while the RTX A1000 supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. Cache sizes are not recorded in the database for either GPU.

The Verdict

The recorded data separates the two GPUs by role. The H20 is a 500 W SXM Module with no display outputs, no API entries, and a 900 W suggested PSU. The RTX A1000 is a 50 W single-slot card with a 250 W suggested PSU, four mini-DisplayPort 1.4a outputs, and full API listings. On compute and memory specifications, the H20 is ahead: 39.54 TFLOPS FP32 versus 6.737 TFLOPS, 79.07 TFLOPS FP16 versus 6.737 TFLOPS, 96 GB HBM3 versus 8 GB GDDR6, 4.03 TB/s versus 192.0 GB/s, and 312 tensor cores versus 72. The RTX A1000 counters with the only recorded benchmark scores, a 79th percentile rank, and a 50 W TDP. For a workload that requires a display output or relies on recorded benchmark results, the RTX A1000 is the supported option. For a server workload that needs the H20's memory capacity, bandwidth, and compute rates, the H20 is the data-backed option. The H20's 50th percentile and average score of 0 reflect missing benchmark data, not measured performance.

Specification Differences

Only the recorded fields in which the two GPUs differ are listed below.

| Field | NVIDIA H20 | NVIDIA RTX A1000 |

| Chip | GH100 | GA107 |

| Architecture | Hopper | Ampere |

| Generation | Server Hopper (Hxx) | Workstation Ampere (Ax000) |

| Process node | 5 nm | 8 nm |

| Foundry | TSMC | Samsung |

| Transistors | 80,000 million | 8,700 million |

| Die size | 814 mm² | 200 mm² |

| Transistor density | 98.3M / mm² | 43.5M / mm² |

| Base clock | 1830 MHz | 727 MHz |

| Boost clock | 1980 MHz | 1462 MHz |

| Memory clock | 1313 MHz 5.3 Gbps effective | 1500 MHz 12 Gbps effective |

| Memory size | 96 GB | 8 GB |

| Memory type | HBM3 | GDDR6 |

| Memory bus width | 6144 bit | 128 bit |

| Memory bandwidth | 4.03 TB/s | 192.0 GB/s |

| Shading units | 9984 | 2304 |

| TMUs | 312 | 72 |

| ROPs | 24 | 32 |

| RT cores | Not recorded | 18 |

| Tensor cores | 312 | 72 |

| Pixel rate | 47.52 GPixel/s | 46.78 GPixel/s |

| Texture rate | 617.8 GTexel/s | 105.3 GTexel/s |

| FP32 | 39.54 TFLOPS | 6.737 TFLOPS |

| FP16 | 79.07 TFLOPS (2:1) | 6.737 TFLOPS (1:1) |

| TDP | 500 W | 50 W |

| Slot width | SXM Module | Single-slot |

| Power connectors | Not recorded | None |

| Suggested PSU | 900 W | 250 W |

| Bus interface | PCIe 5.0 x16 | PCIe 4.0 x8 |

| Display outputs | No outputs | 4x mini-DisplayPort 1.4a |

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

| OpenGL | N/A | 4.6 |

| Vulkan | N/A | 1.4 |

| Dimensions | Not recorded | 163 mm 6.4 inches, 69 mm 2.7 inches |

| Release date | 2024-01-31 | 2024-04-15 |

| Predecessor | Server Ada | Quadro Turing |

| Successor | Server Blackwell | Workstation Ada |

| Benchmark entries | None | 3DMark Steel Nomad DX12: 969, Geekbench OpenCL: 52078, Geekbench Vulkan: 49574 |

| Average benchmark score | 0 | 34207 |

| Percentile vs all GPUs | 50 | 79 |

| Nearest rivals | None recorded | RTX A2000 12 GB (34154, 0.2% higher), RX 560 XT (34133, 0.2% higher), TITAN V (34355, 0.4% lower), RX 480 (33997, 0.6% higher) |

FAQ

Q: Does the NVIDIA H20 have any recorded benchmark scores?

A: No. The H20 has no benchmark entries and an average benchmark score of 0, placing it at the 50th percentile among all GPUs in the database.

Q: What benchmark scores does the NVIDIA RTX A1000 record?

A: The RTX A1000 records 969 in 3DMark Steel Nomad DX12, 52078 in Geekbench OpenCL, and 49574 in Geekbench Vulkan. Its average benchmark score is 34207, placing it at the 79th percentile.

Q: How does the RTX A1000 compare with its nearest rivals?

A: Its average score of 34207 is 0.2% above the NVIDIA RTX A2000 12 GB (34154), 0.2% above the AMD Radeon RX 560 XT (34133), 0.6% above the AMD Radeon RX 480 (33997), and 0.4% below the NVIDIA TITAN V (34355).

Q: Which GPU has more memory bandwidth?

A: The NVIDIA H20. It has 96 GB HBM3 on a 6144-bit bus with 4.03 TB/s, while the RTX A1000 has 8 GB GDDR6 on a 128-bit bus with 192.0 GB/s.

Q: Which GPU supports display outputs?

A: The RTX A1000 supports 4x mini-DisplayPort 1.4a outputs. The H20 is listed with no outputs.

Q: Which GPU has a lower TDP?

A: The RTX A1000, at 50 W, compared with the H20's 500 W. The suggested PSU is 250 W for the A1000 and 900 W for the H20.

Where Each One Wins

The H20 wins the specification categories tied to server compute. It delivers 39.54 TFLOPS FP32 versus 6.737 TFLOPS, 79.07 TFLOPS FP16 (2:1) versus 6.737 TFLOPS (1:1), 96 GB HBM3 versus 8 GB GDDR6, 4.03 TB/s versus 192.0 GB/s, 312 tensor cores versus 72, 312 TMUs versus 72, and 617.8 GTexel/s versus 105.3 GTexel/s. It also uses a PCIe 5.0 x16 interface, while the RTX A1000 uses PCIe 4.0 x8.

The RTX A1000 wins the recorded benchmark and workstation connectivity categories. It has three benchmark scores (969, 52078, and 49574) versus none for the H20, an average benchmark score of 34207 versus 0, and a 79th percentile rank versus 50. It has 18 RT cores versus no recorded RT core count, 32 ROPs versus 24, 4x mini-DisplayPort 1.4a outputs versus no outputs, and API support for DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4, where the H20 lists N/A. It also draws 50 W versus 500 W, carries a 250 W suggested PSU versus 900 W, and fits a single-slot 163 mm 6.4 inches by 69 mm 2.7 inches footprint, while the H20 is an SXM Module with no recorded dimensions. The generation labels reinforce the split: the H20 comes from Server Hopper (Hxx), while the RTX A1000 comes from Workstation Ampere (Ax000).