AMD Ryzen 7 8840U

The AMD Ryzen 7 8840U is an 8-core, 16-thread mobile processor in the 8000 series, built on Zen 4 under the Hawk Point codename and manufactured on a 4 nm process by TSMC. It carries 16 MB of shared L3 cache, includes a Radeon 780M integrated GPU, and is rated at a 28 W TDP. Benchmark data places it at the 80th percentile among all CPUs, with an average benchmark score of 22760.

Platform and Compatibility

The 8840U is built for AMD Socket FP8. Its part-number list includes identifiers for FP7r2, FP7, and FP8 variants, so platform compatibility centers on those FP-series socket variants. This is a mobile-market processor, which means the upgrade path is tied to a system board that already supports these socket variants rather than to a general desktop-style socket. The production status is Active, so the part is currently in the product line.

Memory support is DDR5 with a dual-channel memory bus and 89.6 GB/s of memory bandwidth. ECC memory is not supported. That shape points to standard dual-channel DDR5 configurations, and the bandwidth figure suggests the memory subsystem is matched to this Zen 4 core layout. On the PCIe side, the processor provides Gen 4 with 20 lanes from the CPU. The data lists those as CPU-only lanes, so the direct I/O budget is 20 Gen 4 lanes; any chipset-side path is outside this pack. For a mobile platform, that I/O envelope is enough for typical high-bandwidth devices, though the exact distribution between storage and other devices is not specified in the data.

The multiplier is not unlocked, so user-controlled multiplier overclocking is not available. As a result, the upgrade and tuning question is mostly about selecting a platform that supports the FP8/FP7 part family, not about pushing this chip beyond its rated operating behavior through a unlocked multiplier.

Power and Thermals

The TDP is 28 W. That places the 8840U in a low-power mobile class, and in practical terms it implies a compact mobile cooling solution rather than a large desktop cooler. The data does not specify a cooler, but a 28 W rating keeps thermal demands relatively modest. The chip is built on a 4 nm process at TSMC, with 25,000 million transistors on a 178 mm² die. That combination of a dense process and a small die area suggests the 28 W TDP is supported by a power-efficient design.

The locked multiplier also affects the thermal picture. Because the multiplier is not unlocked, all-core behavior will follow the system's power limits instead of user-configured frequency settings. The 5.10 GHz boost clock provides a high single-thread ceiling, but the practical boost profile under sustained load depends on how the platform distributes power within that 28 W envelope. The benchmark scores in the pack are therefore already a product of this power class, and comparisons to rivals should be read as 28 W-class results.

How It Compares

Against the Intel Core i5-13500H, the Ryzen 7 8840U posts an average score of 22760 against 22668, a 0.4% delta. That is essentially a tie in aggregate benchmark terms; the two parts are effectively indistinguishable in this data.

Against the Intel Core Ultra 7 258V, the 8840U's average score is 22760 compared to 22857, a -0.4% delta. The 8840U is a fraction behind, close enough that workload-specific scores would decide the winner.

Against the Intel Core i7-1270P, the 8840U is 0.9% ahead, with scores of 22760 to 22548. This is the largest lead in the nearest-rival set, but still a narrow margin.

Against the Intel Core Ultra 5 135U, the 8840U is 0.9% behind, 22760 to 22977. This is the largest deficit in the set, but it too is a narrow margin. The nearest-rival cluster is tightly packed.

FAQ

Q: What socket does the AMD Ryzen 7 8840U use?

A: The processor uses AMD Socket FP8. The listed part numbers also include FP7r2 and FP7 identifiers, which are platform-specific variants.

Q: Does it support DDR5 memory?

A: Yes. Memory support is DDR5 with a dual-channel memory bus and 89.6 GB/s of bandwidth.

Q: Does it support ECC memory?

A: No. The ECC memory field is false.

Q: What integrated graphics does it include?

A: It includes the Radeon 780M integrated GPU.

Q: Can the multiplier be adjusted for overclocking?

A: No. The multiplier is not unlocked, so user-controlled multiplier overclocking is not supported.

Q: Where does it rank in the aggregate benchmark distribution?

A: It is in the 80th percentile among all CPUs, with an average benchmark score of 22760.

Single-Thread vs Multi-Thread Behavior

The benchmark data shows a clear split between lightly threaded and heavily threaded workloads. In 3DMark, the single-thread score is 979. Moving to 2 threads raises the score to 1863, and 4 threads reaches 3289. The 8-thread score is 4896, while the max-thread score is 5677 and the 16-thread score is 5691. The 16-thread and max-thread scores are nearly identical, which indicates that after all 16 threads are active the processor has reached its measured multi-thread ceiling. The jump from 8 threads to 16 threads is smaller than the jump from 4 threads to 8 threads, suggesting diminishing returns from the final set of threads.

Cinebench results reinforce this pattern. The R15 single-core score is 282 and multi-core is 1999; R20 single-core is 1176 and multi-core is 8331; R23 single-core is 2800 and multi-core is 19838. Geekbench single-core is 2188 and multi-core is 9334. PassMark single-thread is 3543 and multithread is 23346. Across these tests, the multi-thread result is much larger than the single-thread result, as expected for a 16-thread part. The practical implication is that lightly threaded user-facing work will lean on the 5.10 GHz boost clock and the single-core scores, while parallel workloads can use the 16 threads.

Benchmark Performance

The average benchmark score of 22760 is the central aggregate figure. In the nearest-rival set, the 8840U sits at 0.4% ahead of the Intel Core i5-13500H, 0.9% ahead of the Intel Core i7-1270P, 0.4% behind the Intel Core Ultra 7 258V, and 0.9% behind the Intel Core Ultra 5 135U. These deltas are all narrow, so the benchmark database treats these processors as near-equivalents in average performance.

Within the PassMark sub-scores, the 8840U shows strong integer math at 85740 and floating point math at 48820. Data compression scores 267525, random string sorting scores 32158, data encryption scores 16072, and extended instructions score 18654. The physics sub-score is 1176 and the find-prime-numbers sub-score is 78. The multithread PassMark score is 23346. These sub-scores indicate that the processor handles a variety of data-processing tasks with high throughput, not just simple multi-core aggregate workloads.

Cinebench scores show a consistent multi-core advantage across versions: R15 multi-core 1999, R20 multi-core 8331, and R23 multi-core 19838. The single-core versions are 282, 1176, and 2800 respectively. Geekbench multi-core 9334 and single-core 2188 provide another cross-check. The overall picture is a processor whose multi-thread performance is competitive with the nearest rivals at this TDP class, while single-thread performance benefits from the 5.10 GHz boost clock.

Who Should Consider It

The 8840U is a reasonable fit for mobile systems that want 8 cores and 16 threads within a 28 W TDP. Users with office and productivity workloads will see high integer math and compression scores: integer math at 85740, data compression at 267525, and random string sorting at 32158. Those numbers suggest there is spare capacity for common document, data, and multitasking work.

For creation workloads that scale across threads, the Cinebench R23 multi-core score of 19838 and the Geekbench multi-core score of 9334 indicate solid parallel throughput. The 16 MB shared L3 cache and 16 threads help feed multi-threaded jobs. The integrated GPU is a Radeon 780M, so there is a built-in display output, but any GPU-accelerated creation work would depend on the integrated graphics capability, which the CPU-only benchmark data here does not measure.

Gaming-oriented users should read the CPU scores carefully. The 3DMark CPU scores are not graphics tests; they cover CPU physics and thread scaling. The 16-thread score of 5691 and the single-thread score of 979 show useful CPU-side computing capacity, and the 5.10 GHz boost clock helps for lightly threaded game logic. However, this fact pack contains no graphics benchmark for the Radeon 780M, so frame-rate conclusions cannot be drawn from this data.

Finally, the 80th percentile ranking and Active production status place the 8840U as a broadly competitive mobile processor in the database's aggregate view. Users who need DDR5 support, PCIe Gen 4, and a 16-thread Zen 4 core layout with a Radeon 780M iGPU have a fitting data point in this processor.