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

The Ryzen 7 8700F and Ryzen 7 7840HS share the same Zen 4 Phoenix silicon, but they are aimed at completely different environments. The 8700F is a desktop part on Socket AM5, while the 7840HS is a mobile processor on Socket FP8. In the recorded data, the 8700F wins every single head-to-head benchmark, making this comparison less about which is faster and more about which platform fits your specific need. The 8700F's average benchmark score of 30,746 places it in the 82nd percentile of all CPUs, while the 7840HS scores 29,955, landing in the 81st percentile. Both are strong performers, but the data shows a clear, consistent edge for the desktop chip.

Where Each One Wins

The results are one-sided, with the AMD Ryzen 7 8700F taking all 23 recorded head-to-head benchmark wins. There is no workload category in our measurements where the Ryzen 7 7840HS comes out ahead. The 8700F wins across the board: in synthetic multi-threaded tests, single-threaded tests, and specialized workloads like encryption and compression.

That said, the 7840HS is not without its own strengths. It is a mobile chip with a 35W TDP, which makes it suitable for thin and light laptops where power draw and heat output are critical constraints. The 8700F, with its 65W TDP, is designed for desktop systems with dedicated cooling and power delivery. If you are building a desktop PC, the 8700F is the obvious choice. If you are purchasing a laptop, the 7840HS is the one that will be inside, offering a very high level of performance for a mobile part. The integrated Radeon 780M graphics on the 7840HS also give it a feature that the 8700F lacks entirely.

FAQ

Q: Is the AMD Ryzen 7 8700F faster than the AMD Ryzen 7 7840HS?

A: Yes, in every recorded benchmark the 8700F wins. The largest margin is in Cinebench R23 multi-core, where the 8700F scores 26,646 versus the 7840HS's 15,102, a delta of 76.4%.

Q: What is the most significant performance gap between the two?

A: The Cinebench R23 single-core test shows the largest relative difference, with the 8700F scoring 3,761 points against the 7840HS's 1,761, which is 113.6% higher. This is a substantial lead in a classic rendering workload.

Q: Do both processors have the same number of cores and threads?

A: Yes, both offer 8 cores and 16 threads. The performance differences come from clock speeds and the target usage environment, not the core count.

Q: Does the Ryzen 7 7840HS have integrated graphics?

A: Yes, it includes Radeon 780M integrated graphics. The Ryzen 7 8700F does not have integrated graphics, so a dedicated GPU is required for that desktop processor.

Q: Why is the Ryzen 7 7840HS slower despite having a higher boost clock?

A: The 7840HS has a boost clock of 5.10 GHz versus the 8700F's 5.00 GHz, but it is a 35W mobile part. The 8700F has a 65W TDP, and sustained performance in a desktop environment yields higher scores in the database.

Q: Which processor is better for a desktop build?

A: The Ryzen 7 8700F is the desktop part, using AMD Socket AM5, while the 7840HS uses Socket FP8 and is designed for mobile. The data shows the 8700F is significantly faster across all tested metrics.

Head-to-Head Benchmarks

The 3DMark tests show a consistent, moderate lead for the 8700F. In 3DMark 16 threads, the 8700F scores 7,883 versus 7,314, a 7.8% advantage. The gap narrows slightly at lower thread counts, but the 8700F still wins all of them: 4.5% in 2 threads, 5.1% in 4 threads, and 7.7% in 8 threads.

The Cinebench tests reveal the most dramatic differences. The R15 single-core test shows the 8700F scoring 378 against 274 for the 7840HS, a massive 38% delta. The R23 single-core test is an outlier, with the 8700F dominating 3,761 to 1,761, a 113.6% lead. The multi-core results are also heavily tilted, with the 8700F winning R15 multi-core by 20.8% (2,685 to 2,222.84) and R23 multi-core by 76.4% (26,646 to 15,102).

Geekbench results show a similar trend, with the 8700F scoring 12.8% higher in single-core (2,290 vs. 2,031) and 14.2% higher in multi-core (13,523 vs. 11,846). The PassMark suite also favors the desktop chip, with wins in integer math (1.7% delta), floating point math (4.5%), and the broad multithread test (7.9%). The largest PassMark lead is in random string sorting, a 12.5% gap, and a 12.9% win in physics.

Specification Differences

The two processors share core architecture, but their platform targets create different specs. The 8700F has a base clock of 4.10 GHz and a boost of 5.00 GHz. The 7840HS runs at a 3.80 GHz base and a 5.10 GHz boost. The desktop chip has a 65W TDP, while the mobile chip is rated for 35W.

• Socket: The 8700F uses AMD Socket AM5, while the 7840HS uses AMD Socket FP8.
• Memory: Both support DDR5, but the 8700F has a memory bandwidth of 83.2 GB/s, while the 7840HS has 89.6 GB/s.
• ECC Memory: The 7840HS supports ECC memory (though not necessarily validated in all laptops), while the 8700F does not.
• Integrated Graphics: The 8700F has none, while the 7840HS has Radeon 780M.
• Multiplier Unlock: The 8700F has an unlocked multiplier, while the 7840HS is locked.
• Release Date: The 8700F has a release date of 2024-03-31 and a launch MSRP of $270. The database does not record a release date for the 7840HS.

Architecture Differences

Both chips are based on AMD's Zen 4 architecture, codenamed Phoenix, and are manufactured on TSMC's 4 nm process. They have identical transistor counts (25,000 million) and die size (178 mm²). The cache structure is also the same, with 64 KB of L1 per core, 1 MB of L2 per core, and 16 MB of shared L3 cache.

The key architectural difference is the memory controller and platform. The 8700F is a desktop part with a dual-channel DDR5 memory bus, while the 7840HS is a mobile part with a dual-channel DDR5 memory bus. The 7840HS has a slightly higher memory bandwidth at 89.6 GB/s, but the 8700F's lower base clock does not hinder it in our tests. Both have PCIe Gen 4 with 20 lanes, but the 8700F's is listed as CPU only, which is typical for desktop. The 7840HS includes integrated Radeon 780M graphics, which is a major architectural inclusion that the 8700F lacks entirely.

The Verdict

The benchmark data is unambiguous: the AMD Ryzen 7 8700F is the faster processor in every test. It is the correct choice for a desktop build where performance is the priority. Its unlocked multiplier also allows for manual overclocking, which a locked mobile chip cannot do. Its 65W TDP suggests it will need a capable air cooler or liquid cooler, but that is a standard desktop requirement.

The AMD Ryzen 7 7840HS should be chosen when you need the performance of 8 Zen 4 cores in a mobile package. It is the only one of the two that can be used in a laptop, and it includes integrated graphics to boot. Its 35W TDP makes it suitable for thin and light notebooks. The data shows it is slower, but it is not a slow processor: it sits in the 81st percentile of all CPUs. For portable productivity, it is more than up to the task. The decision is a choice between a faster desktop processor and a mobile processor with integrated graphics. For a stationary workstation, the 8700F is the clear winner. For a mobile system, the 7840HS is the only option.