AMD Radeon 8040S vs AMD Radeon 820M Comparison

Head-to-Head Benchmarks

The database contains a complete set of PassMark benchmark scores for the AMD Radeon 8040S, while the AMD Radeon 820M has no recorded benchmark entries in the current dataset. This means direct head-to-head comparisons rely on the 8040S's absolute scores and its position relative to other GPUs in the database, rather than side-by-side test results.

The AMD Radeon 8040S records an average benchmark score of 2440. Its individual PassMark scores show a distinctive pattern across API generations. In PassMark DirectX 9, the 8040S achieves 134 points. DirectX 10 testing yields a score of 48, while DirectX 11 produces 80 points. The DirectX 12 result is 47 points. The GPU compute score reaches 5138, and the G2D score is 1052. The G3D score, which typically reflects overall 3D rendering performance, comes in at 10578.

With that G3D score of 10578, the 8040S sits at the 17th percentile among all GPUs in the database. The average benchmark score of 2440 places it in a cluster of older, low-power mobile and entry-level desktop parts. The nearest rival in the database is the NVIDIA GeForce 710M, with an average score of 2433, putting the 8040S ahead by 0.3%. The Intel HD Graphics 610 follows at 2425, where the 8040S leads by 0.6%. The NVIDIA GeForce GT 710M scores 2422, a 0.7% deficit for that rival. The AMD Radeon RX 7400, despite being a newer discrete part, scores 2467, which is 1.1% higher than the 8040S.

Because the 820M has no benchmark scores recorded, the database cannot produce a delta percentage or a win count for either GPU in a head-to-head comparison. The wins field shows 0 for both items. The data indicates that the 8040S has been tested and classified, while the 820M remains untested in the PassMark suite.

The compute performance of the 8040S deserves attention. Its PassMark GPU compute score of 5138 is roughly double its average benchmark score, suggesting that compute workloads such as OpenCL or similar general-purpose GPU tasks perform relatively better than the overall average might imply. The DirectX 11 score of 80 is notably higher than the DirectX 12 score of 47, which could indicate driver maturity or architectural characteristics that favor older API paths in synthetic testing.

For the 820M, the absence of scores means the database cannot confirm any performance level. The 8040S, by contrast, has a clear profile: it is a low-to-mid-range integrated GPU that competes closely with decade-old discrete mobile GPUs like the GeForce 710M and GT 710M, as well as entry-level integrated graphics like the HD 610.

The Verdict

The recorded data paints a clear picture for system integrators and users choosing between these two AMD integrated GPUs. The AMD Radeon 8040S is the only one of the two with measurable performance in the database. Its average benchmark score of 2440, while modest, places it in a working range that overlaps with several older discrete GPUs. The 820M has no recorded scores, so the database offers no evidence of its performance capabilities.

From the specifications alone, the 8040S carries significantly more execution resources. It has 1024 shading units, 64 texture mapping units, 32 raster operation units, and 16 ray tracing cores. The 820M has 128 shading units, 8 TMUs, 4 ROPs, and 2 ray tracing cores. The 8040S therefore has 8 times the shading units and TMUs, and 8 times the ROPs of the 820M. The compute throughput figures confirm this gap: the 8040S delivers 5.734 TFLOPS in FP32 and FP16, while the 820M delivers 716.8 GFLOPS in both. That is exactly an 8x difference in raw floating-point throughput.

The pixel rate and texture rate numbers follow the same pattern. The 8040S achieves 89.60 GPixel/s and 179.2 GTexel/s. The 820M achieves 11.20 GPixel/s and 22.40 GTexel/s. Again, the 8040S is exactly 8 times faster in both metrics.

Power consumption differs substantially. The 8040S has a TDP of 55 W, while the 820M operates at 15 W. This means the 820M may be suitable for lower-power designs, but the database contains no performance data to indicate whether that power efficiency translates into acceptable frame rates or compute results.

The verdict from the data is straightforward: the 8040S is the higher-performance part by a wide margin on paper, and it has verified benchmark scores. The 820M is unverified in the database. Users who need an iGPU with known performance should favor the 8040S, provided the 55 W power envelope is acceptable. Those constrained to a 15 W TDP and willing to accept unknown performance should consider the 820M, but the database cannot validate that choice.

FAQ

Q: What is the average benchmark score for the AMD Radeon 8040S?

A: The AMD Radeon 8040S has an average benchmark score of 2440 across the PassMark tests recorded in the database.

Q: Does the AMD Radeon 820M have any benchmark scores?

A: No, the database lists zero benchmark entries for the AMD Radeon 820M, and its average benchmark score is recorded as 0.

Q: How does the Radeon 8040S compare to its nearest rival, the NVIDIA GeForce 710M?

A: The Radeon 8040S has an average score of 2440, which is 0.3% higher than the GeForce 710M's score of 2433.

Q: What is the percentile ranking of the Radeon 8040S among all GPUs?

A: The Radeon 8040S sits at the 17th percentile among all GPUs in the database, indicating it outperforms 17% of recorded GPUs.

Q: Which GPU has a higher TDP?

A: The Radeon 8040S has a TDP of 55 W, while the Radeon 820M has a TDP of 15 W.

Q: What is the FP32 compute throughput difference between the two GPUs?

A: The Radeon 8040S delivers 5.734 TFLOPS, while the Radeon 820M delivers 716.8 GFLOPS, making the 8040S exactly 8 times faster in FP32 compute.

Specification Differences

The two GPUs differ in nearly every measurable specification. The Radeon 8040S uses the Strix Halo chip, while the Radeon 820M uses the Krackan Point 2 chip. Both are built on a 4 nm process at TSMC. The 8040S has a die size of 308 mm², while the 820M's die size is unknown.

Clock speeds differ at the base level: the 8040S runs at 1295 MHz base, while the 820M runs at 400 MHz base. Both have the same boost clock of 2800 MHz. Memory is system-shared for both, with system-dependent bandwidth.

The execution unit counts are drastically different. The 8040S has 1024 shading units, 64 TMUs, 32 ROPs, and 16 ray tracing cores. The 820M has 128 shading units, 8 TMUs, 4 ROPs, and 2 ray tracing cores. Pixel rate is 89.60 GPixel/s for the 8040S versus 11.20 GPixel/s for the 820M. Texture rate is 179.2 GTexel/s versus 22.40 GTexel/s. FP32 throughput is 5.734 TFLOPS versus 716.8 GFLOPS.

Power consumption: the 8040S has a TDP of 55 W, the 820M has a TDP of 15 W. The bus interface differs: the 8040S uses PCIe 5.0 x16, while the 820M uses PCIe 4.0 x8. Both are integrated GPUs with no power connectors and portable-device-dependent display outputs.

Release dates differ: the 8040S launched on January 5, 2025, while the 820M launched on February 28, 2025. The 8040S's predecessor is Polaris Mobile, while the 820M's predecessor is Navi II IGP. Both are active in production.

Architecture Differences

Both the AMD Radeon 8040S and the AMD Radeon 820M use the RDNA 3.5 architecture, but they belong to different generations and chip families. The 8040S is part of the Navi Mobile (RX 8000M) generation, built on the Strix Halo chip. The 820M belongs to the Navi III IGP (Strix Point Mobile) generation, built on the Krackan Point 2 chip.

The 8040S's die measures 308 mm², while the 820M's die size is not recorded. Both use a 4 nm TSMC process. The 8040S has 8 times the shading units, TMUs, and ROPs of the 820M, and 8 times the ray tracing cores. This suggests the 8040S is a much larger, more fully featured implementation of the RDNA 3.5 architecture.

The base clock difference is substantial: 1295 MHz for the 8040S versus 400 MHz for the 820M. The boost clocks are identical at 2800 MHz. The 8040S achieves a higher pixel rate and texture rate due to its larger ROP and TMU counts, not due to clock speed advantages at boost.

Both GPUs support DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. Both use system-shared memory with no dedicated VRAM. The 8040S connects via PCIe 5.0 x16, while the 820M uses PCIe 4.0 x8. The 8040S's higher TDP of 55 W versus 15 W for the 820M reflects the larger silicon and higher base clock.

The 8040S has a predecessor of Polaris Mobile, indicating a generational leap from older GCN-based parts to RDNA 3.5. The 820M's predecessor is Navi II IGP, showing it follows an earlier RDNA-based integrated GPU. Both are active products with no successors recorded in the database.