AMD Radeon 820M vs NVIDIA H20 NVL16 Comparison

Head-to-Head Benchmarks

The database contains no direct head-to-head benchmark results between the AMD Radeon 820M and the NVIDIA H20 NVL16. Both entries record an average benchmark score of 0, and the wins counters for each side remain at 0. This absence of measured data is itself informative: the two products occupy entirely different segments of the GPU landscape, and no standardized workload has yet produced a comparative score for both.

What can be established from the recorded specifications is the scale of the gap in raw compute capabilities. The NVIDIA H20 NVL16 delivers 39.54 TFLOPS of FP32 performance, while the AMD Radeon 820M provides 716.8 GFLOPS. Converting the latter to TFLOPS yields 0.7168 TFLOPS, meaning the H20 NVL16 offers roughly 55 times the FP32 throughput. On the FP16 front, the H20 NVL16 reaches 79.07 TFLOPS with a 2:1 ratio, whereas the Radeon 820M manages 716.8 GFLOPS at a 1:1 ratio. The NVIDIA part more than doubles its FP32 output when moving to FP16, while the AMD part holds steady, reflecting their different design priorities.

Pixel throughput tells a similar story. The NVIDIA H20 NVL16 achieves 47.52 GPixel/s, compared to 11.20 GPixel/s for the Radeon 820M, a 4.2x advantage. Texture rate separates them further: 617.8 GTexel/s versus 22.40 GTexel/s, a 27.6x margin. These figures indicate that in any fill-rate-bound or texture-heavy workload, the H20 NVL16 would dominate by an order of magnitude.

Both GPUs share the same percentile ranking among all GPUs in the database at 50, but this ranking reflects their positions within their respective peer groups rather than any equivalence in absolute performance. The percentile field does not provide a comparative measure between the two; it simply places each within the full distribution of recorded GPUs.

Where Each One Wins

The AMD Radeon 820M is an integrated graphics processor built for portable devices. Its 15 W TDP, IGP slot width, and lack of power connectors position it entirely within the mobile and low-power computing space. It supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4, making it suitable for modern graphical APIs in consumer applications. Its display outputs are portable device dependent, confirming its role as a component embedded in laptops or similar hardware. The 400 MHz base clock and 2800 MHz boost clock define a power-conscious operating range.

The NVIDIA H20 NVL16 is a server-oriented accelerator in an SXM Module form factor. It draws 400 W and requires an 800 W suggested PSU. It has no display outputs, which means it is not intended for rendering to a monitor. Its API support is listed as N/A for DirectX, OpenGL, and Vulkan, indicating the hardware is designed for compute workloads rather than graphics rendering. The 96 GB HBM3 memory with a 6144 bit bus and 4.03 TB/s bandwidth provides massive capacity for large datasets, a capability entirely absent from the Radeon 820M, which relies on system shared memory with system dependent bandwidth.

The Radeon 820M wins in the mobile integrated segment by default: it is the only one of the two that can function inside a portable device. The H20 NVL16 wins in every measurable compute metric, including shading units (9984 versus 128), texture mapping units (312 versus 8), and raster output units (24 versus 4). The H20 NVL16 also includes 312 tensor cores, a feature the Radeon 820M does not list at all.

Architecture Differences

The two GPUs come from different architectural generations and manufacturing processes. The AMD Radeon 820M uses the RDNA 3.5 architecture, built on a 4 nm process at TSMC. It belongs to the Navi III IGP generation for Strix Point Mobile and uses the Krackan Point 2 chip. Its predecessor is listed as Navi II IGP. The NVIDIA H20 NVL16 uses the Hopper architecture, fabricated on a 5 nm process, also at TSMC, with the GH100 chip. Its generation is Server Hopper (Hxx), and it succeeds Server Ada while being succeeded by Server Blackwell.

Transistor counts differ dramatically. The H20 NVL16 packs 80,000 million transistors on an 814 mm² die, yielding a transistor density of 98.3 million per square millimeter. The Radeon 820M lists its transistor count and die size as unknown, so no direct comparison can be made from the database. The process node advantage goes to AMD at 4 nm versus 5 nm, but the NVIDIA part compensates with a far larger die and vastly more compute resources.

Ray tracing hardware appears on both, but with different implementations. The Radeon 820M lists 2 ray tracing cores. The H20 NVL16 does not list a ray tracing core count in the database. Instead, it emphasizes 312 tensor cores, which the Radeon 820M does not list. This suggests the NVIDIA part is optimized for tensor-heavy operations such as deep learning inference and training, while the AMD part includes ray tracing support for gaming-oriented workloads.

Memory architecture is fundamentally different. The Radeon 820M uses system shared memory with a system dependent bandwidth, meaning its performance scales with the host platform's memory subsystem. The H20 NVL16 uses 96 GB of HBM3 memory on a 6144 bit bus, providing 4.03 TB/s of dedicated bandwidth. Clock speeds also differ: the Radeon 820M runs at 400 MHz base and 2800 MHz boost, while the H20 NVL16 runs at 1830 MHz base and 1980 MHz boost. The AMD part has a higher boost clock but a much lower base clock, reflecting its power-constrained integrated design.

Bus interfaces separate them further. The Radeon 820M uses PCIe 4.0 x8, while the H20 NVL16 uses PCIe 5.0 x16. The NVIDIA part has double the lane count and a newer PCIe generation, providing more host bandwidth. The Radeon 820M has no power connectors, while the H20 NVL16 lists an 800 W suggested PSU, underscoring the server card's power appetite.

The Verdict

The data indicates two products with no meaningful overlap. The AMD Radeon 820M is an integrated GPU for portable devices, released on 2025-02-28, with a 15 W TDP and support for modern graphics APIs. The NVIDIA H20 NVL16 is a server accelerator, released on 2025-09-01, with a 400 W TDP and no display output. The H20 NVL16 outperforms the Radeon 820M in every recorded compute metric by a wide margin: 55x in FP32, 4.2x in pixel rate, and 27.6x in texture rate. It also offers 96 GB of HBM3 memory, 312 tensor cores, and 9984 shading units.

The Radeon 820M is the appropriate choice for a portable device requiring graphics output and modern API support within a 15 W power envelope. The H20 NVL16 is the appropriate choice for server compute workloads requiring massive memory capacity, high FP16 throughput, and tensor acceleration, at the cost of 400 W power draw and no display functionality. The percentile ranking of 50 for both parts reflects their standing within their own categories, not parity between them. The database contains no benchmark results that would allow a direct performance comparison, so the specification gap must stand as the primary evidence.

FAQ

Q: Which GPU has higher FP32 performance?

A: The NVIDIA H20 NVL16 delivers 39.54 TFLOPS of FP32, while the AMD Radeon 820M provides 716.8 GFLOPS.

Q: How much memory does each GPU have?

A: The NVIDIA H20 NVL16 has 96 GB of HBM3 memory with a 6144 bit bus and 4.03 TB/s bandwidth. The AMD Radeon 820M uses system shared memory with system dependent bandwidth.

Q: Do both GPUs support ray tracing?

A: The AMD Radeon 820M lists 2 ray tracing cores. The NVIDIA H20 NVL16 does not list a ray tracing core count in the database.

Q: What are the power requirements?

A: The AMD Radeon 820M has a 15 W TDP with no power connectors. The NVIDIA H20 NVL16 has a 400 W TDP and an 800 W suggested PSU.

Q: Which GPU supports DirectX?

A: The AMD Radeon 820M supports DirectX 12 Ultimate (12_2). The NVIDIA H20 NVL16 lists DirectX as N/A.

Q: When were these GPUs released?

A: The AMD Radeon 820M was released on 2025-02-28. The NVIDIA H20 NVL16 was released on 2025-09-01.

Specification Differences

| Specification | AMD Radeon 820M | NVIDIA H20 NVL16 |

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

| Architecture | RDNA 3.5 | Hopper |

| Process Node | 4 nm | 5 nm |

| Transistors | unknown | 80,000 million |

| Die Size | unknown | 814 mm² |

| Transistor Density | null | 98.3M / mm² |

| Base Clock | 400 MHz | 1830 MHz |

| Boost Clock | 2800 MHz | 1980 MHz |

| Memory Size | System Shared | 96 GB |

| Memory Type | System Shared | HBM3 |

| Bus Width | System Shared | 6144 bit |

| Bandwidth | System Dependent | 4.03 TB/s |

| Shading Units | 128 | 9984 |

| TMUs | 8 | 312 |

| ROPs | 4 | 24 |

| RT Cores | 2 | null |

| Tensor Cores | null | 312 |

| Pixel Rate | 11.20 GPixel/s | 47.52 GPixel/s |

| Texture Rate | 22.40 GTexel/s | 617.8 GTexel/s |

| FP32 | 716.8 GFLOPS | 39.54 TFLOPS |

| FP16 | 716.8 GFLOPS (1:1) | 79.07 TFLOPS (2:1) |

| TDP | 15 W | 400 W |

| Slot Width | IGP | SXM Module |

| Power Connectors | None | null |

| Suggested PSU | null | 800 W |

| Bus Interface | PCIe 4.0 x8 | PCIe 5.0 x16 |

| Display Outputs | Portable Device Dependent | No outputs |

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

| OpenGL | 4.6 | N/A |

| Vulkan | 1.4 | N/A |

| Production Status | Active | Active |

| Release Date | 2025-02-28 | 2025-09-01 |

| Predecessor | Navi II IGP | Server Ada |

| Successor | null | Server Blackwell |