AMD Ryzen 7 PRO 8840U vs Intel Core 5 315 Comparison

The AMD Ryzen 7 PRO 8840U and Intel Core 5 315 target the same thin-and-light mobile space, but the benchmark data reveals they are built for entirely different workloads. The Ryzen 7 PRO 8840U dominates heavily threaded productivity, while the Intel Core 5 315 shows a narrow but clear edge in specific single-threaded and prime-number workloads. The recorded data shows 14 benchmark wins for the AMD part against 3 for the Intel part, but the margins of those wins tell a more nuanced story about where each chip belongs.

Where Each One Wins

The AMD Ryzen 7 PRO 8840U is the clear choice for multi-threaded, compute-heavy tasks. Its advantage is most pronounced in integer math, where it scores 178.8% higher than the Intel Core 5 315, and in data compression, where it leads by 86.6%. These are the workloads that scale with core count and thread count, and the Ryzen 7 PRO 8840U has 8 cores and 16 threads versus the Intel Core 5 315's 6 cores and 6 threads. The Cinebench suite confirms this pattern: the AMD processor wins multi-core tests by 56% across R15, R20, and R23, with scores of 2041, 8506, and 20254 respectively.

The Intel Core 5 315, by contrast, shows its strength in single-threaded integer work and prime number generation. It wins the PassMark single-thread test with a score of 4021 versus 3641, a 9.5% margin. More surprisingly, it wins the find prime numbers test by 32.1%, scoring 112 versus 76. This suggests the Intel architecture handles that specific mathematical workload far more efficiently, despite its lower overall core count. The Intel part also scores higher in PassMark single-thread, which appears twice in the data with identical scores.

For typical office productivity, document editing, and web browsing, the benchmark results do not provide a definitive winner, as both chips are capable. The AMD processor's physics score is nearly identical to the Intel part (1174 versus 1163, a 0.9% delta), indicating similar performance in that simulated workload. However, for anything involving rendering, code compilation, data analytics, or encryption, the Ryzen 7 PRO 8840U is the stronger performer based on the recorded margins.

FAQ

Q: Which processor has more cores and threads?

A: The AMD Ryzen 7 PRO 8840U has 8 cores and 16 threads. The Intel Core 5 315 has 6 cores and 6 threads.

Q: What is the biggest single benchmark margin between the two?

A: The largest delta is in PassMark integer math, where the AMD Ryzen 7 PRO 8840U scores 88339 versus the Intel Core 5 315's 31690, a 178.8% difference.

Q: Does the Intel Core 5 315 win any benchmarks?

A: Yes, it wins three recorded tests: PassMark find prime numbers (112 versus 76, a 32.1% margin) and PassMark single-thread (4021 versus 3641, a 9.5% margin), which appears twice in the data.

Q: How do the Cinebench scores compare?

A: The AMD Ryzen 7 PRO 8840U wins every Cinebench test by roughly 56%. For example, R23 multi-core is 20254 versus 12981, and R23 single-core is 2859 versus 1832.

Q: What is the memory bandwidth difference?

A: The AMD Ryzen 7 PRO 8840U has a dual-channel memory bus with 89.6 GB/s bandwidth. The Intel Core 5 315 uses a single-channel bus with 59.7 GB/s bandwidth.

Q: Which processor has a higher boost clock?

A: The AMD Ryzen 7 PRO 8840U boosts to 5.10 GHz. The Intel Core 5 315 boosts to 4.40 GHz.

Head-to-Head Benchmarks

The Cinebench results establish a consistent hierarchy. In R15 multi-core, the AMD Ryzen 7 PRO 8840U scores 2041 against the Intel Core 5 315's 1308, a 56% advantage. The same margin appears in R20 multi-core (8506 versus 5452) and R23 multi-core (20254 versus 12981). Single-core Cinebench tests follow the same pattern: R15 single-core is 288 versus 184 (56.5%), R20 single-core is 1200 versus 769 (56%), and R23 single-core is 2859 versus 1832 (56.1%). These uniform margins indicate a fundamental throughput advantage for the AMD architecture across rendering workloads.

The PassMark suite reveals where the Intel part can fight back. In find prime numbers, the Intel Core 5 315 scores 112, which is 32.1% higher than the Ryzen 7 PRO 8840U's 76. This is the largest percentage win for Intel. The single-thread test also favors Intel, with a score of 4021 versus 3641, a 9.5% edge. These wins suggest the Intel core design has superior instruction-level efficiency for certain mathematical operations, even at lower clock speeds.

The AMD Ryzen 7 PRO 8840U dominates the remaining PassMark tests. Integer math shows a 178.8% delta (88339 versus 31690), which is the largest absolute and relative gap in the entire dataset. Data compression is next at 86.6% (272664 versus 146143), followed by random string sorting at 88.6% (33109 versus 17551). Data encryption shows a 47.9% advantage (16441 versus 11119), and extended instructions are 45.6% higher (19132 versus 13143). Floating point math is closer at 19.6% (50746 versus 42441), while multithread shows a 56.2% delta (23850 versus 15272). The physics test is nearly a tie at 0.9% (1174 versus 1163).

Specification Differences

The AMD Ryzen 7 PRO 8840U uses 8 cores with 16 threads, while the Intel Core 5 315 uses 6 cores with 6 threads, meaning the Intel part has no hyperthreading. Base clocks differ substantially: the AMD chip runs at 3.30 GHz, while the Intel chip sits at 1.50 GHz. Boost clocks are 5.10 GHz for AMD and 4.40 GHz for Intel. Thermal design power is 28 W for the AMD part and 15 W for the Intel part.

Cache configurations are distinct. The Ryzen 7 PRO 8840U has 64 KB L1 per core, 1 MB L2 per core, and 16 MB shared L3. The Intel Core 5 315 has 192 KB L1 total, 2.5 MB L2 total, and 6 MB shared L3. Memory support differs: AMD uses DDR5 with dual-channel access and 89.6 GB/s bandwidth, while Intel supports DDR5 and LPDDR5X but only with a single-channel bus and 59.7 GB/s bandwidth. ECC memory is supported on the AMD part but not on the Intel part.

PCIe lanes also differ: the AMD chip provides Gen 4 with 20 lanes from the CPU, while the Intel chip provides Gen 4 with only 6 lanes. Integrated graphics are the Radeon 780M for AMD and Intel Xe3 Graphics with 2 Xe cores for Intel. Sockets are AMD Socket FP7 versus Intel BGA 1516. The AMD part has a part number of 100-000001317 (FP7r2) or 100-000001377 (FP7), while the Intel part is SAEFC.

Architecture Differences

The AMD Ryzen 7 PRO 8840U is built on Zen 4 architecture with the Hawk Point codename, fabricated on a 4 nm process by TSMC. It contains 25,000 million transistors on a 178 mm² die. The Intel Core 5 315 uses the Wildcat Lake codename, fabricated on a 3 nm process by Intel, with no transistor count or die size recorded in the database. The manufacturing process difference is notable: Intel's 3 nm node is smaller than AMD's 4 nm node, though the Intel part's transistor density is not documented.

The core design philosophies diverge. AMD's Zen 4 uses simultaneous multithreading to double thread count from 8 to 16, while Intel's Wildcat Lake runs 6 cores with 6 threads, indicating a simpler single-thread-per-core design. The Ryzen 7 PRO 8840U belongs to the 8000 series, while the Intel Core 5 315 has no series designation. Generation labels are "Ryzen 7 (Zen 4 (Hawk Point))" for AMD and "Core 5 (Wildcat Lake)" for Intel.

The AMD part has a significantly larger L3 cache at 16 MB shared versus 6 MB shared on Intel. Per-core L2 is also larger on AMD at 1 MB per core versus a total of 2.5 MB on Intel. The Intel part's L1 cache is 192 KB total, which is smaller than the AMD part's 64 KB per core allocation. These cache differences likely contribute to the AMD part's advantage in data compression and encryption benchmarks, where larger caches reduce memory traffic.

The Intel Core 5 315 has a launch MSRP of $340. The AMD Ryzen 7 PRO 8840U has no recorded launch MSRP in the database. Both processors are marked as Active in production and target the mobile market segment. Neither has an unlocked multiplier. The Intel part was released on 2026-04-15, while the AMD part was released on 2024-04-15, showing a two-year gap in release timing.