AMD Radeon 8040S vs AMD Radeon 840M Comparison

Head-to-Head Benchmarks

The recorded database contains no direct head-to-head benchmark comparisons between the AMD Radeon 8040S and the AMD Radeon 840M. Instead, the available data provides a benchmark profile for the Radeon 8040S and a percentile ranking for the Radeon 840M, which allows for indirect comparison.

The Radeon 8040S produces a Passmark G3D score of 10,578 across its test suite. Its average benchmark score sits at 2,440, which places it in the 17th percentile of all GPUs tracked in the database. The nearest rivals for the Radeon 8040S, based on average score, include the NVIDIA GeForce 710M at 2,433 (0.3% ahead), the Intel HD Graphics 610 at 2,425 (0.6% ahead), and the NVIDIA GeForce GT 710M at 2,422 (0.7% ahead). The AMD Radeon RX 7400 trails by 1.1% with an average score of 2,467.

The Radeon 840M holds a 50th percentile ranking among all GPUs, which is substantially higher than the 17th percentile occupied by the Radeon 8040S. This percentile gap indicates that the 840M sits near the middle of the overall GPU distribution, while the 8040S sits closer to the lower end. However, the 840M has no recorded average benchmark score and no rival comparisons in the database, so a direct numerical score comparison is not possible.

For the Radeon 8040S, individual Passmark scores reveal a specific performance pattern. DirectX 9 yields a score of 134, DirectX 10 produces 48, DirectX 11 reaches 80, and DirectX 12 scores 47. The G2D score is 1,052, while the G3D score is 10,578. GPU compute performance registers at 5,138. These figures show that the 8040S delivers its strongest result in the G3D test, with compute performance roughly half of that G3D figure. The DirectX scores are comparatively low, with DirectX 9 being the highest among them.

The 840M lacks any benchmark entries in the database, meaning no Passmark scores exist for DirectX 10, 11, 12, 9, G2D, G3D, or GPU compute. Its 50th percentile ranking is the sole performance indicator available. This percentile suggests that the 840M outperforms roughly half of all GPUs in the database, whereas the 8040S outperforms only about 17% of them.

The Verdict

Based strictly on the recorded data, the AMD Radeon 840M holds the higher percentile ranking at 50, compared to the 17th percentile of the AMD Radeon 8040S. This ranking indicates that the 840M sits closer to the midpoint of all GPUs, while the 8040S sits well below that midpoint. For users selecting between these two integrated graphics processors, the percentile data favors the 840M.

The Radeon 8040S, despite its lower percentile, has a full set of benchmark scores that show measurable performance in specific tests. Its G3D score of 10,578 and GPU compute score of 5,138 provide concrete figures, but these results place it among rivals like the NVIDIA GeForce 710M and Intel HD Graphics 610, all within a narrow average score band from 2,422 to 2,467. The 8040S is essentially tied with those older discrete and integrated solutions, with deltas of 0.3%, 0.6%, 0.7%, and -1.1%.

The 840M has no benchmark scores to verify its percentile ranking, so its position relies entirely on the database's percentile calculation. The 50th percentile implies a median performance level, but without an average score or rival comparisons, the magnitude of its advantage over the 8040S cannot be quantified from the available data.

For a user who prioritizes the higher percentile position, the 840M appears to be the stronger choice. For a user who needs verified benchmark scores, the 8040S offers documented results, albeit at a low percentile. The data does not support a decisive victory for either product in raw performance terms, given the absence of head-to-head tests and the missing benchmark profile for the 840M.

Architecture Differences

The AMD Radeon 8040S uses the Strix Halo chip, while the AMD Radeon 840M uses the Krackan Point chip. Both are built on the RDNA 3.5 architecture and manufactured on a 4 nm process at TSMC. The 8040S belongs to the Navi Mobile (RX 8000M) generation, whereas the 840M belongs to the Navi III IGP (Strix Point Mobile) generation.

The 8040S has a die size of 308 mm², while the 840M's die size is recorded as unknown. Transistor counts are unknown for both parts. The 8040S has a base clock of 1295 MHz and a boost clock of 2800 MHz. The 840M starts at a lower base clock of 400 MHz but boosts to 2900 MHz. Memory for both is system shared, with system-dependent bandwidth and bus width.

The 8040S contains 1024 shading units, 64 texture mapping units, 32 ROPs, and 16 ray tracing cores. The 840M has 256 shading units, 16 TMUs, 8 ROPs, and 4 ray tracing cores. These counts give the 8040S four times the shading units, four times the TMUs, four times the ROPs, and four times the ray tracing cores of the 840M.

Pixel rate for the 8040S is 89.60 GPixel/s, and texture rate is 179.2 GTexel/s. The 840M produces 23.20 GPixel/s and 46.40 GTexel/s. FP32 performance is 5.734 TFLOPS for the 8040S and 1,484.8 GFLOPS for the 840M, with FP16 running at a 1:1 ratio for both. The 8040S has a TDP of 55 W, while the 840M has a TDP of 15 W.

The 8040S uses a PCIe 5.0 x16 bus interface, and the 840M uses PCIe 4.0 x8. Both are integrated graphics processors with no power connectors and portable device dependent display outputs. Both support DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The 8040S was released on 2025-01-05, and the 840M followed on 2025-02-28. The 8040S lists Polaris Mobile as its predecessor, and the 840M lists Navi II IGP as its predecessor.

FAQ

Q: Which GPU has the higher percentile ranking?

A: The AMD Radeon 840M holds a 50th percentile ranking among all GPUs, while the AMD Radeon 8040S holds a 17th percentile ranking.

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

A: The Radeon 8040S has an average benchmark score of 2,440.

Q: Does the Radeon 840M have any recorded benchmark scores?

A: No, the database lists no benchmark entries for the Radeon 840M, including Passmark DirectX, G2D, G3D, or GPU compute tests.

Q: How many shading units does each GPU have?

A: The Radeon 8040S has 1024 shading units, and the Radeon 840M has 256 shading units.

Q: What are the boost clocks for both GPUs?

A: The Radeon 8040S boosts to 2800 MHz, and the Radeon 840M boosts to 2900 MHz.

Q: Which GPU has a higher TDP?

A: The Radeon 8040S has a TDP of 55 W, and the Radeon 840M has a TDP of 15 W.

Q: What is the FP32 performance for each GPU?

A: The Radeon 8040S delivers 5.734 TFLOPS, and the Radeon 840M delivers 1,484.8 GFLOPS.

Where Each One Wins

The AMD Radeon 8040S wins in raw compute and graphics throughput based on the recorded specifications. Its FP32 performance of 5.734 TFLOPS is roughly four times the 1,484.8 GFLOPS of the Radeon 840M, and its pixel rate of 89.60 GPixel/s and texture rate of 179.2 GTexel/s are both approximately four times higher than the 840M's 23.20 GPixel/s and 46.40 GTexel/s. The 8040S also carries four times the shading units, TMUs, ROPs, and ray tracing cores. Its larger die size of 308 mm² and higher TDP of 55 W support these heavier workloads, and its PCIe 5.0 x16 interface provides a wider bus path than the 840M's PCIe 4.0 x8.

The AMD Radeon 840M wins in efficiency and percentile standing. Its TDP of 15 W is less than a third of the 8040S's 55 W, making it suitable for lower-power systems. Its boost clock of 2900 MHz is 100 MHz higher than the 8040S's 2800 MHz, and its base clock starts at 400 MHz versus 1295 MHz, indicating a wider dynamic range. The 840M's 50th percentile ranking places it at the median of all GPUs, whereas the 8040S sits at the 17th percentile. The 840M also has a more recent release date of 2025-02-28 versus 2025-01-05 for the 8040S, and it lists a newer predecessor in Navi II IGP versus Polaris Mobile.

The recorded data does not include head-to-head benchmark wins for either product, with both winsA and winsB fields at zero. The 8040S provides a complete benchmark profile with measurable scores, including a G3D score of 10,578 and GPU compute of 5,138, but it competes with older rivals like the GeForce 710M and GT 710M within a tight average score range. The 840M offers no benchmark scores, only its percentile position. Therefore, the 8040S wins on absolute performance specifications and documented test results, while the 840M wins on percentile standing and power efficiency.