AMD Radeon 820M vs NVIDIA GeForce RTX 4080 SUPER Comparison

AMD Radeon 820M and NVIDIA GeForce RTX 4080 SUPER occupy opposite ends of the graphics spectrum. The 820M is an integrated graphics processor from AMD, built on the RDNA 3.5 architecture, while the RTX 4080 SUPER is a standalone add-in board from NVIDIA, based on the Ada Lovelace architecture. The database records no shared benchmark results between them, so the comparison relies on their respective architectural and specification profiles, as well as the recorded performance data for the RTX 4080 SUPER.

Where Each One Wins

The AMD Radeon 820M is designed for low-power, portable devices. Its 15 W thermal design power and integrated form factor make it suitable for thin-and-light laptops where discrete graphics are impractical. The 820M delivers 716.8 GFLOPS of FP32 performance, which is appropriate for basic display output, video playback, and light productivity workloads. Its memory is system-shared, meaning it draws from the main system RAM, and bandwidth is system-dependent, so there is no dedicated video memory to manage. The 820M occupies an IGP slot width, requires no power connectors, and has a base clock of 400 MHz with a boost clock of 2800 MHz. The recorded data shows it sits at the 50th percentile among all GPUs, indicating a middle-of-the-road standing for a chip of its class.

The NVIDIA GeForce RTX 4080 SUPER is a high-end discrete GPU. It delivers 52.22 TFLOPS of FP32 performance, which is substantially higher than the 820M, and it includes 16 GB of GDDR6X memory on a 256-bit bus, providing 736.3 GB/s of bandwidth. The RTX 4080 SUPER records an average benchmark score of 54209 across multiple tests, including a 3DMark Steel Nomad DX12 score of 6600, a Geekbench OpenCL score of 219065, and a Geekbench Vulkan score of 260075. Its percentile ranking is 86, meaning it outperforms the large majority of GPUs in the database. The RTX 4080 SUPER also has a PassMark G3D score of 34245, a PassMark G2D score of 1270, and a PassMark GPU Compute score of 19822.

The wins are clear. The RTX 4080 SUPER wins in every performance metric recorded in the database, from raw compute to memory bandwidth. The 820M wins in power efficiency and physical footprint, as it requires no discrete power connectors and operates within a 15 W envelope. The 820M is also newer in release date, coming out at the end of February 2025, while the RTX 4080 SUPER was released at the end of January 2024. The 820M is still in active production, whereas the RTX 4080 SUPER is marked as end-of-life.

Architecture Differences

The AMD Radeon 820M uses the RDNA 3.5 architecture, built on a 4 nm process at TSMC. It is part of the Navi III IGP generation for Strix Point Mobile, and the chip is codenamed Krackan Point 2. The 820M has 128 shading units, 8 texture mapping units, and 4 raster output units. It includes 2 ray tracing cores, which is a notable feature for an integrated GPU. The FP16 performance is identical to FP32 at 716.8 GFLOPS, indicating a 1:1 ratio for compute operations. The pixel rate is 11.20 GPixel/s, and the texture rate is 22.40 GTexel/s. The 820M supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The bus interface is PCIe 4.0 x8. The transistor count and die size are not recorded in the database.

The NVIDIA GeForce RTX 4080 SUPER uses the Ada Lovelace architecture, built on a 5 nm process at TSMC. The chip is AD103, with 45,900 million transistors on a die size of 379 mm², giving a transistor density of 121.1 million transistors per square millimeter. The RTX 4080 SUPER has 10240 shading units, 320 texture mapping units, and 112 raster output units. It includes 80 ray tracing cores and 320 tensor cores, the latter being absent from the 820M. The FP16 performance is also identical to FP32 at 52.22 TFLOPS, also a 1:1 ratio. The pixel rate is 285.6 GPixel/s, and the texture rate is 816.0 GTexel/s. The RTX 4080 SUPER supports the same API set as the 820M, including DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The bus interface is PCIe 4.0 x16.

Key architectural differences include the process node, with the 820M using a smaller 4 nm process versus the RTX 4080 SUPER’s 5 nm process. The RTX 4080 SUPER has significantly more shading units, texture mapping units, and raster output units, along with a much larger number of ray tracing cores and the addition of tensor cores. The 820M’s ray tracing cores are present but limited to 2, while the RTX 4080 SUPER has 80. The 820M has no tensor cores, so any tensor-based workloads are not applicable. The memory architecture also differs fundamentally: the 820M uses system-shared memory with no dedicated bus width or bandwidth figures, while the RTX 4080 SUPER uses 16 GB of GDDR6X with a 256-bit bus and fixed bandwidth.

Head-to-Head Benchmarks

The database contains no head-to-head benchmark results between the AMD Radeon 820M and the NVIDIA GeForce RTX 4080 SUPER. The wins count is zero for both parts. However, the RTX 4080 SUPER has a substantial set of recorded benchmarks that illustrate its performance level. The 3DMark Steel Nomad DX12 test yields a score of 6600. The Geekbench OpenCL score is 219065, and the Geekbench Vulkan score is 260075. The PassMark suite shows a DirectX 10 score of 193, DirectX 11 score of 301, DirectX 12 score of 134, and DirectX 9 score of 381. The PassMark G2D score is 1270, the G3D score is 34245, and the GPU Compute score is 19822.

The RTX 4080 SUPER’s average benchmark score is 54209, which places it in the 86th percentile among all GPUs. Its nearest rivals in the database include the NVIDIA GeForce RTX 4080 with an average score of 54247, which is 0.1 percent ahead of the RTX 4080 SUPER. The AMD Radeon Pro W5700X has an average score of 54828, which is 1.1 percent ahead. The AMD Radeon RX 6750 GRE 12 GB has an average score of 55698, which is 2.7 percent ahead. The AMD Radeon 8060S has an average score of 55757, which is 2.8 percent ahead. These deltas indicate that the RTX 4080 SUPER is slightly behind its closest peers, but the differences are small, ranging from a tenth of a percent to under three percent.

For the 820M, the database does not record any benchmark scores, and its average benchmark score is listed as zero. The percentile rank of 50 is based on the overall distribution, but without specific test results, there is no quantitative comparison to the RTX 4080 SUPER. The data shows that the RTX 4080 SUPER’s FP32 compute is 52.22 TFLOPS, while the 820M is 716.8 GFLOPS, indicating a large gap in raw compute capacity. The pixel rate difference is also stark: 285.6 GPixel/s versus 11.20 GPixel/s. The texture rate is 816.0 GTexel/s versus 22.40 GTexel/s.

Specification Differences

The two GPUs differ across nearly every recorded specification field. The process node is 4 nm for the 820M and 5 nm for the RTX 4080 SUPER. The RTX 4080 SUPER has a recorded transistor count of 45,900 million, a die size of 379 mm², and a transistor density of 121.1 million per square millimeter; the 820M has none of these recorded. The base clock is 400 MHz for the 820M versus 2295 MHz for the RTX 4080 SUPER. The boost clock is 2800 MHz for the 820M versus 2550 MHz for the RTX 4080 SUPER. Memory size is system-shared for the 820M versus 16 GB for the RTX 4080 SUPER. Memory type is system-shared versus GDDR6X. Bus width is system-shared versus 256 bit. Bandwidth is system-dependent versus 736.3 GB/s. The memory clock for the RTX 4080 SUPER is 1438 MHz with 23 Gbps effective speed; the 820M has no dedicated memory clock.

Shading units are 128 versus 10240. Texture mapping units are 8 versus 320. Raster output units are 4 versus 112. Ray tracing cores are 2 versus 80. Tensor cores are absent (null) for the 820M versus 320 for the RTX 4080 SUPER. Pixel rate is 11.20 GPixel/s versus 285.6 GPixel/s. Texture rate is 22.40 GTexel/s versus 816.0 GTexel/s. FP32 compute is 716.8 GFLOPS versus 52.22 TFLOPS. FP16 compute is 716.8 GFLOPS for both, but the RTX 4080 SUPER’s is 52.22 TFLOPS, so the ratio is 1:1 in both cases. Thermal design power is 15 W versus 320 W. Slot width is IGP versus triple-slot. Power connectors are none versus 1x 16-pin. The suggested power supply is not recorded for the 820M, but the RTX 4080 SUPER lists 700 W. Bus interface is PCIe 4.0 x8 versus PCIe 4.0 x16. Display outputs are portable-device dependent for the 820M versus 1x HDMI 2.1 and 3x DisplayPort 1.4a for the RTX 4080 SUPER.

Physical dimensions are not recorded for the 820M. The RTX 4080 SUPER measures 310 mm in length, 140 mm in height, and 61 mm in width. Production status is active for the 820M and end-of-life for the RTX 4080 SUPER. Release dates differ: the 820M was released at the end of February 2025, and the RTX 4080 SUPER at the end of January 2024. The predecessor for the 820M is Navi II IGP, while the RTX 4080 SUPER’s predecessor is GeForce 30. The RTX 4080 SUPER has a successor, GeForce 50, while the 820M has none recorded. The RTX 4080 SUPER has a launch MSRP of 999 USD, which is stated once here.

FAQ

Q: Which GPU has a higher FP32 compute performance?

A: The NVIDIA GeForce RTX 4080 SUPER has a FP32 compute of 52.22 TFLOPS, while the AMD Radeon 820M has 716.8 GFLOPS. The RTX 4080 SUPER is substantially higher.

Q: What is the memory configuration of each GPU?

A: The AMD Radeon 820M uses system-shared memory with system-dependent bandwidth. The NVIDIA GeForce RTX 4080 SUPER has 16 GB of GDDR6X memory on a 256-bit bus with 736.3 GB/s bandwidth.

Q: How does the ray tracing capability compare?

A: The AMD Radeon 820M has 2 ray tracing cores. The NVIDIA GeForce RTX 4080 SUPER has 80 ray tracing cores, a much larger count.

Q: What is the thermal design power difference?

A: The AMD Radeon 820M has a thermal design power of 15 W. The NVIDIA GeForce RTX 4080 SUPER has a thermal design power of 320 W, requiring a suggested power supply of 700 W.

Q: Are there any benchmark scores for the AMD Radeon 820M?

A: The database does not record any benchmark scores for the AMD Radeon 820M. Its average benchmark score is listed as zero, and it has no nearest rivals recorded.

Q: What is the production status of each GPU?

A: The AMD Radeon 820M has an active production status. The NVIDIA GeForce RTX 4080 SUPER is marked as end-of-life.