AMD Ryzen Z2 GPU vs NVIDIA H20 Comparison

Head-to-Head Benchmarks

The recorded database contains no benchmark scores for either the AMD Ryzen Z2 GPU or the NVIDIA H20. Both parts show an average benchmark score of zero, and the head-to-head benchmark field is empty. Consequently, there are no measured wins, no deltas, and no percentile separations to report between these two accelerators. The absence of data means no direct performance comparison can be drawn from the database at this time.

What can be stated from the available records is the theoretical peak compute derived from the specification sheets. The NVIDIA H20 delivers 39.54 TFLOPS of FP32 compute, which is 4.77 times the 8.294 TFLOPS produced by the AMD Ryzen Z2 GPU. In FP16 work, the gap widens considerably: the H20 reaches 79.07 TFLOPS with a 2:1 throughput ratio, while the Ryzen Z2 GPU sustains 8.294 TFLOPS on a 1:1 basis. That puts the H20 roughly 9.5 times ahead in half-precision throughput. These figures are architectural ceilings, not measured application results, but they establish the relative compute headroom each chip possesses.

Memory bandwidth shows an even larger divide. The H20's HBM3 stack moves 4.03 TB/s across a 6144-bit interface, compared to 119.9 GB/s from the Ryzen Z2 GPU's LPDDR5X on a 128-bit bus. That is a 33.6-fold difference in raw memory throughput. Texture rate also favors the H20 at 617.8 GTexel/s versus 129.6 GTexel/s for the AMD part, a 4.77 times advantage. Pixel rate is the one metric where the AMD chip leads: 86.40 GPixel/s versus 47.52 GPixel/s for the H20, a 1.82 times margin for the Ryzen Z2 GPU.

The database flags both parts at the 50th percentile against all GPUs, which is a placeholder position given the absence of benchmark submissions. Without measured scores, the percentile ranking cannot be interpreted as a performance indicator. The data shows two products with starkly different design targets, but no empirical head-to-head results to rank them.

Architecture Differences

The AMD Ryzen Z2 GPU uses the Hawk Point chip built on TSMC's 4 nm process with RDNA 3.0 architecture. It integrates 25,390 million transistors on a 178 mm² die, yielding a transistor density of 142.6 million per square millimeter. The chip belongs to the Console GPU (AMD) generation and carries 768 shading units, 48 texture mapping units, 32 ROPs, and 12 ray tracing cores. It has no dedicated tensor cores. The design is power-efficient at 28 W TDP with no external power connectors and requires no suggested PSU rating beyond board integration.

The NVIDIA H20 is a fundamentally different class of silicon. It uses the GH100 chip fabricated on TSMC's 5 nm process with Hopper architecture. The die measures 814 mm² and contains 80,000 million transistors, giving a transistor density of 98.3 million per square millimeter. That makes the H20 die 4.57 times larger than the Ryzen Z2 GPU die, with 3.15 times more transistors. The H20 packs 9,984 shading units, 312 TMUs, 24 ROPs, and 312 tensor cores. It reports no ray tracing core count in the database. The H20 is a server accelerator with an SXM Module slot width, a 500 W TDP, a suggested PSU of 900 W, and a PCIe 5.0 x16 bus interface.

Memory technology separates the two sharply. The Ryzen Z2 GPU uses 16 GB of LPDDR5X at 7.5 Gbps effective, clocked at 937 MHz. The H20 uses 96 GB of HBM3 at 5.3 Gbps effective, clocked at 1313 MHz. The H20's memory bus is 48 times wider (6144 bit vs 128 bit), which explains the bandwidth disparity. The AMD part outputs video through a single USB Type-C connector; the H20 has no display outputs. The H20 also lacks DirectX, OpenGL, and Vulkan API support in the database, while the Ryzen Z2 GPU supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4.

Process node differences are notable: the AMD chip uses 4 nm TSMC, the NVIDIA chip uses 5 nm TSMC. Despite the larger node, the H20 achieves higher transistor density per compute pipe because of the massive die. The Ryzen Z2 GPU's smaller node gives it a density advantage per square millimeter, but the H20's overall scale dominates in absolute terms.

Clock behavior also diverges. The Ryzen Z2 GPU boosts to 2700 MHz from an 800 MHz base, a 3.375 times multiplier. The H20 boosts to 1980 MHz from an 1830 MHz base, a modest 1.08 times increase. The AMD part relies on high boost clocks to extract performance from a small power envelope. The H20 runs at lower absolute clocks but compensates with an enormous number of shaders and memory bandwidth.

The H20's production status is Active with a release date of 2024-01-31 (UTC), while the Ryzen Z2 GPU is also Active with a release date of 2024-12-31 (UTC). The H20 lists a predecessor (Server Ada) and successor (Server Blackwell); the Ryzen Z2 GPU lists neither. Neither product has a launch MSRP in the database.

FAQ

Q: Which GPU has higher FP32 compute?

A: The NVIDIA H20 delivers 39.54 TFLOPS of FP32 throughput, which is 4.77 times the 8.294 TFLOPS of the AMD Ryzen Z2 GPU.

Q: How does memory bandwidth compare between the two?

A: The H20 provides 4.03 TB/s of bandwidth via HBM3 on a 6144-bit bus. The Ryzen Z2 GPU provides 119.9 GB/s via LPDDR5X on a 128-bit bus. The H20's bandwidth is 33.6 times higher.

Q: Which GPU has more transistors?

A: The H20 contains 80,000 million transistors on an 814 mm² die. The Ryzen Z2 GPU contains 25,390 million transistors on a 178 mm² die. The H20 has 3.15 times more transistors.

Q: Does the AMD Ryzen Z2 GPU support modern graphics APIs?

A: Yes. The database lists DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4 support for the Ryzen Z2 GPU. The H20 lists N/A for all three APIs.

Q: What is the pixel rate difference?

A: The Ryzen Z2 GPU achieves 86.40 GPixel/s, which is 1.82 times higher than the H20's 47.52 GPixel/s. This is the only major throughput metric where the AMD part leads.

Q: Are these GPUs comparable in power requirements?

A: No. The Ryzen Z2 GPU has a 28 W TDP with no power connectors. The H20 has a 500 W TDP and requires a 900 W suggested PSU. The H20's power draw is 17.9 times higher.

Specification Differences

| Specification | AMD Ryzen Z2 GPU | NVIDIA H20 |

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

| Chip | Hawk Point | GH100 |

| Architecture | RDNA 3.0 | Hopper |

| Generation | Console GPU (AMD) | Server Hopper (Hxx) |

| Process node | 4 nm | 5 nm |

| Transistors | 25,390 million | 80,000 million |

| Die size | 178 mm² | 814 mm² |

| Transistor density | 142.6M / mm² | 98.3M / mm² |

| Base clock | 800 MHz | 1830 MHz |

| Boost clock | 2700 MHz | 1980 MHz |

| Memory clock | 937 MHz 7.5 Gbps effective | 1313 MHz 5.3 Gbps effective |

| Memory size | 16 GB | 96 GB |

| Memory type | LPDDR5X | HBM3 |

| Memory bus width | 128 bit | 6144 bit |

| Memory bandwidth | 119.9 GB/s | 4.03 TB/s |

| Shading units | 768 | 9984 |

| TMUs | 48 | 312 |

| ROPs | 32 | 24 |

| RT cores | 12 | Not listed |

| Tensor cores | Not listed | 312 |

| Pixel rate | 86.40 GPixel/s | 47.52 GPixel/s |

| Texture rate | 129.6 GTexel/s | 617.8 GTexel/s |

| FP32 | 8.294 TFLOPS | 39.54 TFLOPS |

| FP16 | 8.294 TFLOPS (1:1) | 79.07 TFLOPS (2:1) |

| TDP | 28 W | 500 W |

| Slot width | Not listed | SXM Module |

| Power connectors | None | Not listed |

| Suggested PSU | Not listed | 900 W |

| Bus interface | Not listed | PCIe 5.0 x16 |

| Display outputs | 1x USB Type-C | No outputs |

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

| OpenGL | 4.6 | N/A |

| Vulkan | 1.4 | N/A |

| Release date | 2024-12-31 (UTC) | 2024-01-31 (UTC) |

| Predecessor | Not listed | Server Ada |

| Successor | Not listed | Server Blackwell |

Where Each One Wins

The AMD Ryzen Z2 GPU wins in scenarios that prioritize pixel throughput and power efficiency. Its 86.40 GPixel/s pixel rate exceeds the H20's 47.52 GPixel/s, which suggests an advantage in fill-rate-bound rendering work. The 28 W TDP with no power connectors makes it suitable for compact, low-power systems. The 4 nm process and higher boost clock of 2700 MHz indicate a design tuned for responsive scaling within a constrained thermal budget. Its support for DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.4 positions it for graphics workloads that require standard consumer APIs. The single USB Type-C display output allows direct video connectivity.

The NVIDIA H20 wins in compute-heavy and memory-bound workloads. Its 39.54 TFLOPS FP32 and 79.07 TFLOPS FP16 throughput, combined with 4.03 TB/s of HBM3 bandwidth, place it in a different performance tier for parallel processing. The 312 tensor cores and 9,984 shading units support dense matrix operations and large-scale shader workloads. The 96 GB memory capacity at 5.3 Gbps effective on a 6144-bit bus enables datasets that would not fit in the Ryzen Z2 GPU's 16 GB pool. The 617.8 GTexel/s texture rate outperforms the AMD part by 4.77 times, favoring texture-heavy compute tasks. The H20's PCIe 5.0 x16 interface and SXM Module form factor are designed for server integration, not desktop graphics.

The release timeline also separates their intended roles. The H20 launched in January 2024 as part of the Server Hopper generation, with a successor already listed in the database. The Ryzen Z2 GPU launched in December 2024 as a Console GPU, with no successor recorded. These are not competing products in the conventional sense: the Ryzen Z2 GPU targets low-power graphics delivery, while the H20 targets high-throughput server acceleration. The database shows no benchmark overlap, so any win classification rests on the specification deltas alone. The pixel rate and power figures favor AMD; the compute, memory, and tensor figures favor NVIDIA.