AMD Radeon 820M vs NVIDIA N1X 40SM Comparison

Head-to-Head Benchmarks

The recorded database contains no direct head-to-head benchmark results for the AMD Radeon 820M versus the NVIDIA N1X 40SM. Both entries have empty benchmark arrays, zero recorded wins on either side, and an average benchmark score of zero. The percentile ranking for both GPUs is 50, indicating that neither has accumulated any measured performance data to differentiate them in the database.

Without actual benchmark scores, the comparison must rely entirely on the architectural and specification data provided. The performance gap between the two is substantial on paper. The NVIDIA N1X 40SM delivers 24.02 TFLOPS of FP32 compute, while the AMD Radeon 820M provides 716.8 GFLOPS. That places the NVIDIA part at approximately 33.5 times the raw FP32 throughput of the AMD chip. Similarly, the pixel rate differs dramatically: 93.84 GPixel/s for the NVIDIA part versus 11.20 GPixel/s for the AMD part, an 8.4x advantage. Texture rate tells the same story, with the NVIDIA part reaching 750.7 GTexel/s against 22.40 GTexel/s for the AMD part, a 33.5x margin.

The lack of measured benchmark data means these figures remain theoretical peak specifications. No thermal or power constraints have been recorded for the NVIDIA part, as its TDP is listed as unknown, whereas the AMD part carries a 15 W TDP. The practical performance envelope could shift once real-world measurements populate the database. As it stands, the specification sheet indicates a dominant position for the NVIDIA N1X 40SM in every raw throughput category.

Architecture Differences

The two GPUs come from different manufacturers and different architectural generations. The AMD Radeon 820M uses the RDNA 3.5 architecture, built on a 4 nm process at TSMC, and belongs to the Navi III IGP generation for Strix Point Mobile. The chip is identified as Krackan Point 2. The NVIDIA N1X 40SM uses the Blackwell 2.0 architecture, built on a 5 nm process at TSMC, and belongs to the Blackwell IGP generation for N1x. Its chip is identified as GB20B.

The process node favors AMD at 4 nm versus NVIDIA at 5 nm, though both are produced by TSMC. Die size is only recorded for the NVIDIA part at 382 mm², while the AMD die size and transistor counts for both are unknown. The NVIDIA part integrates 5120 shading units, 320 texture mapping units, 40 raster output units, 40 ray tracing cores, and 160 tensor cores. The AMD part integrates 128 shading units, 8 texture mapping units, 4 raster output units, and 2 ray tracing cores, with no tensor core count recorded.

Memory architecture differs fundamentally. The AMD Radeon 820M uses system shared memory with a system shared bus width and system dependent bandwidth. The NVIDIA N1X 40SM uses 128 GB of LPDDR5X memory on a 256 bit bus, with 273.2 GB/s of bandwidth and a recorded memory clock of 1067 MHz or 8.5 Gbps effective. Clock speeds also differ: the AMD part runs at a 400 MHz base and 2800 MHz boost, while the NVIDIA part runs at a 741 MHz base and 2346 MHz boost.

API support separates the two as well. The AMD Radeon 820M supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The NVIDIA N1X 40SM lists DirectX, OpenGL, and Vulkan as N/A in the database. The AMD part connects via PCIe 4.0 x8, while the NVIDIA part uses PCIe 5.0 x16. Display outputs are portable device dependent for the AMD part, while the NVIDIA part lists 1x HDMI. Both are integrated graphics processors with no power connectors and IGP slot width.

The Verdict

The database currently holds no benchmark results for either GPU, so any verdict must rest on the recorded specifications. The NVIDIA N1X 40SM offers dramatically higher raw compute, texture, and pixel throughput. Its 5120 shading units, 320 TMUs, and 40 ROPs dwarf the AMD part's 128 shading units, 8 TMUs, and 4 ROPs. The NVIDIA part also brings 160 tensor cores and 40 ray tracing cores, features that the AMD part lacks entirely in the tensor core column and matches only in ray tracing count at 2 versus 40.

The AMD Radeon 820M counters with a smaller process node at 4 nm versus 5 nm, a higher boost clock at 2800 MHz versus 2346 MHz, and full API support including DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.4. The NVIDIA part has no recorded API support in the database, which limits its applicability in standard gaming and compute environments until that data is updated. The AMD part also carries a recorded 15 W TDP, while the NVIDIA part's TDP remains unknown.

For users selecting between these two, the data points to the NVIDIA N1X 40SM for raw throughput and memory bandwidth. The AMD Radeon 820M appears positioned for compatibility and API coverage. Without benchmark scores, these conclusions remain provisional. The database will need recorded performance data before a definitive ranking can be established.

FAQ

Q: Which GPU has higher FP32 compute performance?

A: The NVIDIA N1X 40SM delivers 24.02 TFLOPS of FP32 compute, compared to 716.8 GFLOPS for the AMD Radeon 820M.

Q: What memory configurations do these GPUs use?

A: The NVIDIA N1X 40SM uses 128 GB of LPDDR5X on a 256 bit bus with 273.2 GB/s bandwidth. The AMD Radeon 820M uses system shared memory with system dependent bandwidth.

Q: Do both GPUs support ray tracing?

A: Yes. The AMD Radeon 820M has 2 ray tracing cores, while the NVIDIA N1X 40SM has 40 ray tracing cores.

Q: What are the boost clock speeds?

A: The AMD Radeon 820M boosts to 2800 MHz, while the NVIDIA N1X 40SM boosts to 2346 MHz.

Q: Which GPU has tensor cores?

A: Only the NVIDIA N1X 40SM has tensor cores, with 160 recorded. The AMD Radeon 820M has no tensor core count listed.

Q: What API support does each GPU list?

A: The AMD Radeon 820M lists DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The NVIDIA N1X 40SM lists DirectX, OpenGL, and Vulkan as N/A.

Where Each One Wins

The NVIDIA N1X 40SM wins on every recorded throughput metric. Its FP32 output of 24.02 TFLOPS is 33.5 times the AMD part's 716.8 GFLOPS. Texture rate reaches 750.7 GTexel/s versus 22.40 GTexel/s, and pixel rate reaches 93.84 GPixel/s versus 11.20 GPixel/s. The NVIDIA part also holds advantages in shading units, texture mapping units, raster output units, ray tracing cores, tensor cores, memory capacity, memory bus width, memory bandwidth, and bus interface. Its PCIe 5.0 x16 connection doubles the lane width and moves to a newer standard compared to the AMD part's PCIe 4.0 x8.

The AMD Radeon 820M wins on process efficiency and clock speed. Its 4 nm node is smaller than the NVIDIA part's 5 nm node. Its boost clock of 2800 MHz exceeds the NVIDIA part's 2346 MHz. The AMD part also holds the only recorded TDP at 15 W, while the NVIDIA part's TDP is unknown. In API coverage, the AMD part lists full support for DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.4, whereas the NVIDIA part lists N/A across all three. The AMD part also predates the NVIDIA part in release, with a release date of 2025-02-28 versus 2026-05-31.

Specification Differences

The two GPUs differ across nearly every recorded specification field. The AMD Radeon 820M uses the Krackan Point 2 chip with RDNA 3.5 architecture, while the NVIDIA N1X 40SM uses the GB20B chip with Blackwell 2.0 architecture. Process nodes differ at 4 nm for AMD and 5 nm for NVIDIA, both from TSMC. Die size is recorded only for NVIDIA at 382 mm².

Shading units: 128 for AMD, 5120 for NVIDIA. Texture mapping units: 8 for AMD, 320 for NVIDIA. Raster output units: 4 for AMD, 40 for NVIDIA. Ray tracing cores: 2 for AMD, 40 for NVIDIA. Tensor cores: none recorded for AMD, 160 for NVIDIA. Base clock: 400 MHz for AMD, 741 MHz for NVIDIA. Boost clock: 2800 MHz for AMD, 2346 MHz for NVIDIA.

Memory: system shared for AMD with system dependent bandwidth, versus 128 GB LPDDR5X for NVIDIA on a 256 bit bus with 273.2 GB/s bandwidth. Bus interface: PCIe 4.0 x8 for AMD, PCIe 5.0 x16 for NVIDIA. Display outputs: portable device dependent for AMD, 1x HDMI for NVIDIA. API support: DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.4 for AMD, all N/A for NVIDIA. TDP: 15 W for AMD, unknown for NVIDIA. Release date: 2025-02-28 for AMD, 2026-05-31 for NVIDIA.