AMD Ryzen 7 7840H vs AMD Ryzen 7 8700F Comparison

The AMD Ryzen 7 7840H and the AMD Ryzen 7 8700F share the same Zen 4 architecture and 8-core, 16-thread configuration, but the benchmark data shows a decisive performance gap between the two. The 8700F, a desktop part, holds a clear advantage across every single recorded workload, while the 7840H is positioned as a mobile processor with a lower power envelope. The data indicates that the desktop chip is the stronger performer in all measured categories.

Head-to-Head Benchmarks

The head-to-head results are entirely one-sided. The AMD Ryzen 7 8700F wins all 23 recorded benchmark comparisons against the AMD Ryzen 7 7840H. This is not a marginal or situational victory; the desktop part leads by a consistent margin across synthetic rendering, physics simulation, and data processing tests.

The largest performance gap appears in the PassMark physics test, where the 8700F scores 1553 compared to the 7840H's 1301, a 16.2% difference. This suggests a substantial advantage in workloads that depend heavily on physical simulation and rigid body calculations. Similarly, the PassMark random string sorting test shows the 8700F at 45425 versus 38938, a 14.3% lead, indicating faster memory access and data manipulation under random access patterns. The PassMark prime finding test also shows a large delta, with scores of 98 versus 83, a 15.3% difference.

In Cinebench, a standard for CPU rendering, the results follow the same pattern. The 8700F scores 26646 in Cinebench R23 multicore, while the 7840H reaches 23731, putting the 8700F 10.9% ahead. This delta is consistent across Cinebench R15, R20, and R23, with the 8700F leading by exactly 10.9% in the multi-core and single-core tests of each version. For example, in Cinebench R20 single-core, the 8700F scores 1579 versus 1407, and in Cinebench R23 single-core, it scores 3761 versus 3350. The single-core advantage is also around 10.9%, showing the higher base clock of the 8700F, 4.10 GHz versus 3.80 GHz, translates into a consistent per-core speed advantage.

The 3DMark results, which measure CPU performance for gaming physics and computing, show the 8700F ahead by smaller margins, ranging from 3.2% in the single-thread test to 6.8% in the 8-thread test. For instance, in 3DMark 2-thread, the 8700F scores 1989 versus 1906, a 4.2% lead, and in 3DMark max-threads, it scores 7861 versus 7409, a 5.7% lead. These smaller deltas in 3DMark compared to Cinebench suggest that the 8700F's clock advantage has a larger impact in purely CPU-bound tasks than in mixed workloads.

PassMark integer and floating point math also favor the 8700F, with a 3.7% lead in integer math (100371 vs 96692) and a 6.2% lead in floating point math (62629 versus 58724). Data encryption and compression tests show the 8700F ahead by 8.8% and 9.7% respectively. The extended instructions test also shows a 9.9% advantage for the desktop chip. The 8700F also wins the multi-thread PassMark test with 30893 points, 9.6% higher than the 7840H's 27919.

The Verdict

The benchmark data indicates that the AMD Ryzen 7 8700F is the superior processor in every measured category. The 8700F should be the clear choice for users who prioritize raw compute performance, especially for tasks like video rendering, code compilation, and high-fidelity physics simulation. The data shows a consistent 10.9% lead in Cinebench tests and a 16.2% lead in physics, which is a significant margin.

The 7840H does not have a single benchmark win. However, its role as a mobile processor with a 35W TDP is a critical distinction. The 8700F has a 65W TDP, which is higher, and is designed for a desktop socket (AM5) with an unlocked multiplier, while the 7840H is designed for a mobile socket (FP8) without an unlocked multiplier. The 7840H also includes a Radeon 780M integrated GPU, while the 8700F has no integrated graphics. This makes the 7840H a better fit for systems where power efficiency and the presence of an integrated GPU are necessary, such as a thin laptop. The 8700F is for a desktop user who has a discrete GPU and wants the highest framerates.

Where Each One Wins

Based on the data, the 8700F wins in all performance categories. The largest margins are in physics and prime finding, where the 8700F leads by over 15%. It also has a strong lead in video rendering and multi-core tasks, as shown by the Cinebench scores. The 8700F is the clear winner for tasks like video editing, 3D modeling, and software compilation, where a 10% or better advantage is significant.

The 7840H, despite losing every benchmark, has its own valid use case. Its advantage is not performance but portability. As a mobile chip with a 35W TDP, it is designed to fit in power-constrained environments. It also includes a Radeon 780M integrated GPU, which means a system using the 7840H can output video to a display without a separate graphics card. The 8700F has no integrated graphics, requiring a discrete GPU for any display output.

The 8700F's memory bandwidth is also slightly higher, at 83.2 GB/s, while the 7840H has a higher memory bandwidth of 89.6 GB/s. This is a counterintuitive finding, but it does not translate into a performance win for the 7840H in the recorded tests.

For a user building a desktop PC, the 8700F is the logical choice. For a user who needs a laptop, the 7840H is the only option in this comparison.

FAQ

Q: Which processor is faster in single-threaded tasks?

A: The AMD Ryzen 7 8700F is faster, scoring 3761 in Cinebench R23 single-core versus the 7840H's 3350, a 10.9% lead.

Q: Does the AMD Ryzen 7 8700F have an integrated GPU?

A: No, the 8700F has no integrated graphics. The AMD Ryzen 7 7840H has a Radeon 780M integrated GPU.

Q: Which CPU has a higher boost clock?

A: The AMD Ryzen 7 7840H has a higher boost clock at 5.10 GHz, while the 8700F has a boost clock of 5.00 GHz.

Q: What is the difference in the number of cores?

A: Both CPUs have 8 cores and 16 threads. There is no difference in the core count.

Q: Which CPU has a higher average benchmark score?

A: The AMD Ryzen 7 8700F has a higher average benchmark score of 30746, while the 7840H has an average score of 29868.

Q: What are the memory bandwidths for each?

A: The 7840H has a memory bandwidth of 89.6 GB/s, while the 8700F has a memory bandwidth of 83.2 GB/s.

Architecture Differences

The two processors share the same fundamental architecture. Both are based on the Zen 4 architecture, codenamed Phoenix, and are manufactured on a 4 nm process at TSMC. Both have the same transistor count of 25,000 million and the same die size of 178 mm². The L1 cache is 64 KB per core, L2 cache is 1 MB per core, and L3 cache is 16 MB shared.

The primary differences lie in their packaging and specifications. The 7840H is a mobile processor with a 35W TDP, socketed into AMD Socket FP8, while the 8700F is a desktop processor with a 65W TDP, socketed into AMD Socket AM5. The 8700F also has an unlocked multiplier, allowing for overclocking, while the 7840H does not.

The memory support is DDR5 for both, but the 7840H falls into a higher memory bandwidth of 89.6 GB/s compared to the 8700F's 83.2 GB/s. The 7840H supports ECC memory, while the 8700F does not. Both have the same PCIe Gen 4 interface with 20 lanes. The most significant feature is the integrated GPU: the 7840H includes the Radeon 780M, while the 8700F has no integrated graphics. The 8700F also has a higher base clock of 4.10 GHz, while the 7840H has a slightly higher boost clock of 5.10 GHz. The 8700F was released on 2024-03-31. The 7840H does not have a recorded release date.