AMD Ryzen 5 7400F vs AMD Ryzen 7 PRO 8840U Comparison

Head-to-Head Benchmarks

The head-to-head benchmark comparison between the AMD Ryzen 5 7400F and the AMD Ryzen 7 PRO 8840U shows a clear overall winner. The Ryzen 5 7400F takes 15 of the 17 recorded benchmark tests, while the Ryzen 7 PRO 8840U wins only two. The most dramatic margin comes in the PassMark find prime numbers test, where the 7400F scores 191 versus 76 for the 8840U, a 151.3% advantage. This is the single largest delta in the entire comparison and highlights a significant difference in how each processor handles this specific workload.

In the Cinebench suite, the 7400F consistently leads by a narrow but uniform margin. In Cinebench R15 multicore, the 7400F scores 2193 against 2041, a 7.4% edge. Single-core R15 shows 309 versus 288, also a 7.3% gain. The pattern repeats in R20, where multi-core performance is 9141 versus 8506 (7.5%) and single-core is 1290 versus 1200 (7.5%). In Cinebench R23, the 7400F posts 21765 versus 20254 in multi-core and 3072 versus 2859 in single-core, both again at 7.5% deltas. These results indicate that across all three Cinebench generations, the 7400F holds a consistent and reproducible advantage in both threaded and lightly threaded rendering workloads.

The PassMark multithread test reinforces this trend. The 7400F scores 25645, while the 8840U scores 23850, a 7.5% gap. PassMark physics also favors the 7400F heavily, with a score of 1660 versus 1174, a 41.4% lead. Data compression follows suit: 289999 for the 7400F versus 272664 for the 8840U, a 6.4% win. Extended instructions show a 13.7% advantage for the 7400F (21747 versus 19132), and random string sorting gives the 7400F a 6% edge (35096 versus 33109). Data encryption is closer, with the 7400F ahead by only 1.6% (16712 versus 16441). Single-thread PassMark scores are nearly identical, 3689 versus 3641, a 1.3% lead for the 7400F.

The two wins for the 8840U come in arithmetic-heavy PassMark sub-tests. In floating point math, the 8840U scores 50746 against 45799 for the 7400F, meaning the 7400F is 9.7% behind. In integer math, the 8840U posts 88339 versus 74745, a 15.4% advantage for the 8840U. These are substantial wins, and they show that the 8840U has a distinct strength in raw mathematical throughput despite losing nearly everything else.

Where Each One Wins

The Ryzen 5 7400F is the stronger choice for rendering, compression, and general threaded workloads. Its Cinebench wins across R15, R20, and R23, both single-core and multi-core, indicate that it handles CPU-bound creative tasks with more headroom. The PassMark multithread score of 25645 versus 23850 and the physics score of 1660 versus 1174 reinforce this, suggesting that the 7400F is better suited for simulation, physics calculations, and other heavily threaded applications. The large lead in find prime numbers (151.3%) and extended instructions (13.7%) also points to a processor that excels in integer-heavy, non-floating-point workloads, such as cryptography, hashing, and certain scientific computations.

The Ryzen 7 PRO 8840U, by contrast, wins in floating point math and integer math. These two PassMark sub-tests are the only places where the 8840U outperforms the 7400F, but the margins are meaningful. The 9.7% lead in floating point math and the 15.4% lead in integer math suggest that the 8840U is better at pure arithmetic throughput, which can benefit applications that rely heavily on number crunching, such as certain financial modeling, data analysis, or engineering simulations. However, these wins are isolated, and the 8840U does not translate them into broader benchmark victories.

For a user deciding between the two, the data points to the 7400F as the stronger all-around performer in the recorded benchmarks. The 8840U is competitive only in a narrow band of math-focused tests. In almost every other category, the 7400F leads, often by margins of 6% to 40%. The only area where the 8840U is close is single-thread PassMark, where the 1.3% gap is negligible. The overall average benchmark score for the 7400F is 32750, while the 8840U sits at 32233, a difference of roughly 1.6% in favor of the 7400F. Both processors land in the 83rd percentile against all CPUs, meaning they are statistically peers in the broader market, but within this direct comparison, the 7400F is the clear winner.

Architecture Differences

The two processors share the same Zen 4 architecture and are both built by TSMC, but they diverge in several key design points. The Ryzen 5 7400F uses the Raphael codename and is built on a 5 nm process node. It packs 6,570 million transistors into a 71 mm² die. The Ryzen 7 PRO 8840U uses the Hawk Point codename and is built on a 4 nm process node, with 25,000 million transistors spread across a 178 mm² die. The 8840U is a significantly larger and more complex chip, which reflects its mobile-oriented design with integrated graphics.

The core counts differ as well. The 7400F has 6 cores and 12 threads, while the 8840U has 8 cores and 16 threads. Despite having fewer cores, the 7400F still wins most multi-threaded benchmarks, which points to differences in clock speeds and power delivery. The 7400F has a base clock of 3.70 GHz and a boost clock of 4.70 GHz. The 8840U has a lower base clock of 3.30 GHz but a higher boost clock of 5.10 GHz. The higher boost clock on the 8840U does not translate into better single-core benchmark results, as the 7400F leads in every single-threaded test. This suggests that the 7400F sustains its boost behavior more effectively under test conditions.

Cache configurations also differ. Both have 64 KB of L1 cache per core and 1 MB of L2 cache per core. The L3 cache, however, is 32 MB shared on the 7400F versus only 16 MB shared on the 8840U. This doubled L3 cache on the 7400F likely contributes to its performance advantage in multi-threaded and data-heavy workloads, as it reduces the need to access slower main memory. The 8840U compensates with a higher memory bandwidth rating of 89.6 GB/s versus 83.2 GB/s for the 7400F, but the smaller L3 cache remains a limiting factor.

The integrated graphics situation is a major architectural split. The 7400F has no integrated graphics, with the spec listed as N/A. The 8840U includes Radeon 780M graphics, making it a complete mobile APU. This is a fundamental difference in target use case. The 7400F is a desktop processor that requires a discrete GPU, while the 8840U is designed for laptops and can drive a display on its own. The PCIe support also differs: the 7400F offers Gen 5 with 24 lanes, while the 8840U offers Gen 4 with 20 lanes. This gives the desktop part more bandwidth for expansion cards and faster storage.

The 7400F is socketed on AMD Socket AM5, while the 8840U uses AMD Socket FP7, which is a BGA-style mobile socket. The 7400F has an unlocked multiplier, enabling overclocking, while the 8840U is locked. The 7400F is part of the 7000 series, and the 8840U is part of the 8000 series. The 7400F was released on January 8, 2025, while the 8840U was released on April 15, 2024. The 7400F has a launch MSRP of $229, while no launch MSRP is recorded for the 8840U.

Specification Differences

The two processors differ in several specification fields. The Ryzen 5 7400F has 6 cores and 12 threads, while the Ryzen 7 PRO 8840U has 8 cores and 16 threads. The base clock is 3.70 GHz for the 7400F and 3.30 GHz for the 8840U. The boost clock is 4.70 GHz for the 7400F and 5.10 GHz for the 8840U. The TDP is 65 watts for the 7400F and 28 watts for the 8840U. This is a substantial difference, with the desktop part drawing more than double the power of the mobile part.

The socket differs: AMD Socket AM5 for the 7400F versus AMD Socket FP7 for the 8840U. The process node is 5 nm for the 7400F and 4 nm for the 8840U. Transistor count is 6,570 million for the 7400F and 25,000 million for the 8840U. Die size is 71 mm² for the 7400F and 178 mm² for the 8840U. L3 cache is 32 MB shared on the 7400F and 16 MB shared on the 8840U. Memory bandwidth is 83.2 GB/s for the 7400F and 89.6 GB/s for the 8840U. PCIe support is Gen 5 with 24 lanes for the 7400F and Gen 4 with 20 lanes for the 8840U. Integrated graphics is listed as N/A for the 7400F and Radeon 780M for the 8840U. The market segment is Desktop for the 7400F and Mobile for the 8840U. The multiplier is unlocked on the 7400F and locked on the 8840U. The part number is 100-000001845 for the 7400F and 100-000001317(FP7r2),100-000001377(FP7) for the 8840U.

Both processors support DDR5 memory, use a dual-channel memory bus, and support ECC memory. Both are manufactured by AMD, use Zen 4 architecture, and are produced by TSMC. Both are currently active in production.

FAQ

Q: Which processor has a higher boost clock?

A: The AMD Ryzen 7 PRO 8840U has a boost clock of 5.10 GHz, which is higher than the 4.70 GHz boost clock of the AMD Ryzen 5 7400F.

Q: Does the Ryzen 5 7400F have integrated graphics?

A: No, the integrated graphics for the Ryzen 5 7400F is listed as N/A. The Ryzen 7 PRO 8840U, in contrast, includes Radeon 780M integrated graphics.

Q: Which processor wins in Cinebench R23 multi-core?

A: The Ryzen 5 7400F wins in Cinebench R23 multi-core with a score of 21765, compared to 20254 for the Ryzen 7 PRO 8840U, a 7.5% advantage.

Q: What is the difference in L3 cache size?

A: The Ryzen 5 7400F has 32 MB of shared L3 cache, while the Ryzen 7 PRO 8840U has 16 MB of shared L3 cache.

Q: Which processor has more cores and threads?

A: The Ryzen 7 PRO 8840U has 8 cores and 16 threads, while the Ryzen 5 7400F has 6 cores and 12 threads.

Q: What are the TDP ratings for each processor?

A: The Ryzen 5 7400F has a TDP of 65 watts, and the Ryzen 7 PRO 8840U has a TDP of 28 watts.