AMD Radeon 820M vs NVIDIA N1 20SM Comparison

Where Each One Wins

The benchmark database contains no direct head-to-head measurements for either the AMD Radeon 820M or the NVIDIA N1 20SM. Both entries show zero recorded benchmark scores, zero wins in direct comparisons, and an identical 50th percentile ranking among all GPUs tracked in the database. This means the data cannot declare a winner in any workload category, whether rasterization, ray tracing, compute, or memory-bound tasks.

What the data does show is the structural intent of each design. The Radeon 820M is positioned as a low-power integrated graphics solution with a 15 W TDP, 128 shading units, and a boost clock of 2800 MHz. Its specifications point toward light rendering tasks and basic 3D acceleration in thin portable devices. The NVIDIA N1 20SM, by contrast, carries 2560 shading units, 160 texture mapping units, 24 render output units, and a 273.2 GB/s memory interface. These figures indicate a much larger execution resource pool, but without benchmarks, the actual performance delta remains unquantified.

The absence of head-to-head data means the only meaningful differentiation comes from the architectural and specification fields. The Radeon 820M uses a 4 nm process, while the N1 20SM uses a 5 nm process. The Radeon 820M lists DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.4 support; the N1 20SM lists none of these APIs. The N1 20SM has a 128 GB memory pool of LPDDR5X on a 256-bit bus, whereas the Radeon 820M uses system shared memory with dependent bandwidth. These are capability markers, not performance results.

Architecture Differences

The two GPUs come from different architectural generations and manufacturing nodes. The Radeon 820M uses RDNA 3.5, built on a 4 nm TSMC process, and belongs to the Navi III IGP family for Strix Point Mobile. The NVIDIA N1 20SM uses Blackwell 2.0, built on a 5 nm TSMC process, and belongs to the Blackwell IGP family under the N1x generation. The Radeon 820M has a die size listed as unknown, while the N1 20SM has a recorded die size of 382 mm².

The shading resource difference is substantial. The Radeon 820M has 128 shading units, 8 TMUs, 4 ROPs, and 2 ray tracing cores. The N1 20SM has 2560 shading units, 160 TMUs, 24 ROPs, and 20 ray tracing cores. The N1 20SM also includes 80 tensor cores, a feature entirely absent from the Radeon 820M's specification sheet. This suggests the NVIDIA part is designed for workloads that leverage tensor operations, while the AMD part makes no such provision.

Clock behavior also differs. The Radeon 820M runs a 400 MHz base clock and boosts to 2800 MHz. The N1 20SM runs a 741 MHz base clock and boosts to 2346 MHz. Despite the lower boost clock on the NVIDIA part, its raw throughput figures are far higher due to the larger execution unit count. The Radeon 820M delivers 716.8 GFLOPS of FP32 compute, while the N1 20SM delivers 12.01 TFLOPS, a factor of roughly 16.8 based on the recorded numbers. Pixel rate and texture rate follow the same pattern: 11.20 GPixel/s and 22.40 GTexel/s for the Radeon, versus 56.30 GPixel/s and 375.4 GTexel/s for the NVIDIA part.

Memory architecture is a major divider. The Radeon 820M uses system shared memory with a system-dependent bus width and bandwidth. The N1 20SM has 128 GB of dedicated LPDDR5X memory on a 256-bit bus, delivering 273.2 GB/s of bandwidth at an effective 8.5 Gbps. The Radeon 820M's memory clock is listed as "System Shared," meaning no fixed frequency. The N1 20SM's memory clock is 1067 MHz base with 8.5 Gbps effective transfer rate.

The Verdict

Based strictly on the recorded data, the NVIDIA N1 20SM is the more capable part on paper. Its compute throughput, texture rate, pixel rate, memory bandwidth, and execution unit counts all exceed the AMD Radeon 820M by wide margins. The N1 20SM also offers tensor cores and a dedicated 128 GB memory pool, neither of which the Radeon 820M provides. The Radeon 820M, however, holds advantages in power efficiency, process node, and API support. It lists a 15 W TDP and a 4 nm process, while the N1 20SM has an unknown TDP and a 5 nm process. The Radeon 820M supports DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.4; the N1 20SM lists no API support in the database.

For users who need a conventional graphics API experience in a low-power mobile device, the Radeon 820M is the only one of the two with recorded software compatibility. For raw computational throughput and memory capacity, the N1 20SM is the clear specification leader. The data does not support a performance verdict because no benchmarks exist. The recorded specifications, however, indicate two different design intents: the Radeon 820M as a modest integrated GPU for everyday graphics, and the N1 20SM as a high-capacity compute-oriented IGP with a large memory subsystem.

FAQ

Q: Which GPU has higher FP32 compute performance?

A: The NVIDIA N1 20SM delivers 12.01 TFLOPS of FP32, while the AMD Radeon 820M delivers 716.8 GFLOPS.

Q: Does the AMD Radeon 820M support DirectX 12 Ultimate?

A: Yes, the Radeon 820M lists DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4 support. The NVIDIA N1 20SM lists no API support in the database.

Q: What memory configuration does the NVIDIA N1 20SM use?

A: The N1 20SM uses 128 GB of LPDDR5X memory on a 256-bit bus with 273.2 GB/s bandwidth at an effective 8.5 Gbps.

Q: How many ray tracing cores does each GPU have?

A: The AMD Radeon 820M has 2 ray tracing cores, while the NVIDIA N1 20SM has 20 ray tracing cores.

Q: What is the process node for each chip?

A: The AMD Radeon 820M uses a 4 nm TSMC process, and the NVIDIA N1 20SM uses a 5 nm TSMC process.

Q: Does the NVIDIA N1 20SM have tensor cores?

A: Yes, the N1 20SM includes 80 tensor cores. The AMD Radeon 820M lists no tensor cores.

Head-to-Head Benchmarks

The database contains no head-to-head benchmark records for the AMD Radeon 820M and the NVIDIA N1 20SM. Both entries have empty benchmark arrays, zero wins for each side, and no recorded average benchmark scores. The percentile ranking for both is 50, indicating the database places them at the midpoint of all tracked GPUs, but this is a categorical position rather than a measured result. Without benchmark data, no performance comparison can be made from direct measurements. The only quantitative comparisons available come from the specification fields, which show the N1 20SM ahead in every throughput metric. The FP32 difference is 12.01 TFLOPS versus 716.8 GFLOPS. The texture rate difference is 375.4 GTexel/s versus 22.40 GTexel/s. The pixel rate difference is 56.30 GPixel/s versus 11.20 GPixel/s. The memory bandwidth difference is 273.2 GB/s versus system-dependent shared memory. These are specification deltas, not benchmark results, and the database records no measured wins for either product.

Specification Differences

| Specification | AMD Radeon 820M | NVIDIA N1 20SM |

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

| Architecture | RDNA 3.5 | Blackwell 2.0 |

| Process Node | 4 nm | 5 nm |

| Die Size | unknown | 382 mm² |

| Base Clock | 400 MHz | 741 MHz |

| Boost Clock | 2800 MHz | 2346 MHz |

| Memory Size | System Shared | 128 GB |

| Memory Type | System Shared | LPDDR5X |

| Memory Bus Width | System Shared | 256 bit |

| Memory Bandwidth | System Dependent | 273.2 GB/s |

| Memory Clock | System Shared | 1067 MHz 8.5 Gbps effective |

| Shading Units | 128 | 2560 |

| TMUs | 8 | 160 |

| ROPs | 4 | 24 |

| Ray Tracing Cores | 2 | 20 |

| Tensor Cores | null | 80 |

| Pixel Rate | 11.20 GPixel/s | 56.30 GPixel/s |

| Texture Rate | 22.40 GTexel/s | 375.4 GTexel/s |

| FP32 | 716.8 GFLOPS | 12.01 TFLOPS |

| FP16 | 716.8 GFLOPS (1:1) | 12.01 TFLOPS (1:1) |

| TDP | 15 W | unknown |

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

| Display Outputs | Portable Device Dependent | 1x HDMI |

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

| OpenGL | 4.6 | N/A |

| Vulkan | 1.4 | N/A |

| Release Date | 2025-02-28 | 2026-05-31 |

The two GPUs differ in every major architectural category. The Radeon 820M has a smaller process node, a lower TDP, and full API compatibility. The N1 20SM has a larger die, a dedicated memory subsystem, far more execution units, and tensor core support. The bus interface also differs, with the Radeon 820M using PCIe 4.0 x8 and the N1 20SM using PCIe 5.0 x16. The N1 20SM lists a single HDMI output, while the Radeon 820M's display outputs are dependent on the portable device. Release dates are separated by over a year, with the Radeon 820M launching on 2025-02-28 and the N1 20SM on 2026-05-31. The predecessor field lists "Navi II IGP" for the Radeon 820M, while the N1 20SM has no predecessor recorded.