AMD Ryzen 5 8640HS vs AMD Ryzen 7 5700 Comparison

FAQ

Q: Which processor wins more benchmark comparisons in the database?

A: The AMD Ryzen 7 5700 wins 14 of 17 head-to-head benchmark comparisons, while the AMD Ryzen 5 8640HS wins only 3.

Q: How large is the multi-core performance gap in Cinebench R23?

A: The Ryzen 7 5700 scores 20,655 versus 11,486 for the Ryzen 5 8640HS, a delta of -44.4% in favor of the Ryzen 7.

Q: Does the Ryzen 5 8640HS win any benchmarks outright?

A: Yes. It wins passmark_find_prime_numbers (70 vs 58, +20.7%) and both passmark_single_thread and passmark_singlethread (3584 vs 3296, +8.7% each).

Q: What is the single-core score difference in Geekbench?

A: The Ryzen 7 5700 posts 1907 versus 1778 for the Ryzen 5 8640HS, a 6.8% advantage for the Ryzen 7.

Q: Are both processors in the same performance percentile?

A: Yes, both are at the 78th percentile among all CPUs in the database, despite the Ryzen 7 having a higher average benchmark score (25,517 vs 26,106 for the Ryzen 5, which is actually higher).

Q: What are the platform differences in memory support?

A: The Ryzen 5 8640HS supports DDR5 with 89.6 GB/s bandwidth, while the Ryzen 7 5700 supports DDR4 with 51.2 GB/s bandwidth.

The Verdict

The data points to a clear split decision based on workload type. For users running heavily multi-threaded applications, the AMD Ryzen 7 5700 is the decisive choice. Its 8 cores and 16 threads deliver a 44.4% lead in Cinebench R23 multi-core, a 25.1% lead in Geekbench multi-core, and a 28.5% lead in Passmark data compression. These are not marginal differences; they represent a substantial throughput advantage across rendering, compression, and encryption workloads.

The AMD Ryzen 5 8640HS, however, claims the single-thread crown in Passmark testing. Its score of 3584 beats the Ryzen 7's 3296 by 8.7%. It also leads in prime number finding by 20.7%. For workloads dominated by single-core responsiveness, the Zen 4 architecture in the 8640HS shows its strength.

The platform story matters. The Ryzen 5 8640HS is a mobile chip on AMD Socket FP8 with a 28W TDP, while the Ryzen 7 5700 is a desktop chip on AM4 with a 65W TDP. The Ryzen 7 offers ECC memory support and an unlocked multiplier; the Ryzen 5 offers integrated Radeon 760M graphics and PCIe Gen 4 connectivity. The Ryzen 5 also supports DDR5 with 89.6 GB/s bandwidth versus DDR4 at 51.2 GB/s for the Ryzen 7.

For desktop builders who need raw multi-core muscle and don't need integrated graphics, the Ryzen 7 5700 is the pick. For mobile users who need a capable integrated GPU, a newer memory standard, and superior single-thread Passmark performance, the Ryzen 5 8640HS fits that niche. The Ryzen 7 5700's launch MSRP is $179, which can be stated once, but the decision ultimately hinges on core count versus architectural generation.

Head-to-Head Benchmarks

The benchmark database records 17 direct comparisons between these two processors. The Ryzen 7 5700 dominates the majority, but the specific margins vary considerably by workload type.

The largest gap appears in Cinebench R23 multi-core, where the Ryzen 7 scores 20,655 against 11,486 for the Ryzen 5. That is a 44.4% deficit for the 8640HS. The single-core Cinebench R23 result is similarly lopsided: 2916 for the Ryzen 7 versus 1711 for the Ryzen 5, a 41.3% difference. These results suggest the Ryzen 7's higher base clock (3.70 GHz vs 3.50 GHz) and greater core count translate directly into Cinebench performance.

Geekbench multi-core shows a 25.1% advantage for the Ryzen 7 (9959 vs 7461). The single-core Geekbench gap narrows to 6.8% (1907 vs 1778). This pattern repeats across Passmark tests. Data compression favors the Ryzen 7 by 28.5% (316,699 vs 226,544). Data encryption shows a 32.6% lead for the Ryzen 7 (20,096 vs 13,551). Extended instructions score 21,945 for the Ryzen 7 versus 15,855 for the Ryzen 5, a 27.8% gap. Integer math is 24.3% higher on the Ryzen 7 (90,091 vs 68,173), and floating point math is 22.8% higher (51,427 vs 39,725). Multithread performance is 18.2% higher on the Ryzen 7 (24,303 vs 19,889), while random string sorting shows a 17.6% advantage (33,138 vs 27,316). Even physics, the closest multi-core comparison, goes to the Ryzen 7 by a narrow 1.4% (984 vs 970).

The Ryzen 5 8640HS claims three wins. The most decisive is passmark_find_prime_numbers, where it scores 70 versus 58, a 20.7% margin. It also wins both passmark_single_thread and passmark_singlethread with identical scores of 3584 against 3296, an 8.7% edge. These wins indicate that the Zen 4 architecture in the 8640HS has a per-thread efficiency advantage in certain integer workloads, even though its lower core count and lower boost clock (4.90 GHz vs 4.60 GHz, though the Ryzen 7's base is higher) limit its overall standing.

Specification Differences

The two processors differ across nearly every major specification field. The Ryzen 5 8640HS has 6 cores and 12 threads, while the Ryzen 7 5700 has 8 cores and 16 threads. Base clocks are 3.50 GHz for the Ryzen 5 and 3.70 GHz for the Ryzen 7. Boost clocks reverse the order: 4.90 GHz for the Ryzen 5 versus 4.60 GHz for the Ryzen 7. TDP is 28W for the mobile chip and 65W for the desktop chip.

Sockets are incompatible: the Ryzen 5 uses AMD Socket FP8, while the Ryzen 7 uses AMD Socket AM4. Memory support diverges completely, with the Ryzen 5 on DDR5 and the Ryzen 7 on DDR4. Memory bandwidth is 89.6 GB/s for the Ryzen 5 and 51.2 GB/s for the Ryzen 7. ECC memory is not supported on the Ryzen 5 but is supported on the Ryzen 7. PCIe generation differs as well: Gen 4 on the Ryzen 5 versus Gen 3 on the Ryzen 7, both with 20 lanes.

Integrated graphics are present only on the Ryzen 5, which features a Radeon 760M. The Ryzen 7 has no integrated graphics. The multiplier is locked on the Ryzen 5 but unlocked on the Ryzen 7. Market segments differ: mobile versus desktop. Release dates are December 5, 2023, for the Ryzen 5 and April 3, 2022, for the Ryzen 7. The Ryzen 7 has a recorded launch MSRP of $179; no MSRP is recorded for the Ryzen 5.

Architecture Differences

The architectural divide is generational. The Ryzen 5 8640HS is built on Zen 4 with the Hawk Point codename, while the Ryzen 7 5700 uses Zen 3 with the Cezanne codename. This manifests in process node and transistor density. The Ryzen 5 uses a 4 nm process from TSMC with 25,000 million transistors on a 178 mm² die. The Ryzen 7 uses a 7 nm process from the same foundry with 10,700 million transistors on a 180 mm² die. The newer node allows the Ryzen 5 to pack more than double the transistors into a nearly identical die area.

Cache hierarchies differ in L2 allocation. Both have 64 KB of L1 per core and 16 MB of shared L3, but the Ryzen 5 has 1 MB of L2 per core while the Ryzen 7 has 512 KB per core. This means the Ryzen 5 has a total of 6 MB of L2 across its 6 cores, while the Ryzen 7 has 4 MB across its 8 cores. The per-core L2 advantage on the Zen 4 chip likely contributes to its Passmark single-thread win.

The Ryzen 5 integrates Radeon 760M graphics, which is absent on the Ryzen 7. The Ryzen 7 compensates with ECC memory support and an unlocked multiplier for overclocking. The Ryzen 5 supports newer PCIe Gen 4 and DDR5, while the Ryzen 7 is limited to PCIe Gen 3 and DDR4. The Ryzen 5's 28W TDP versus the Ryzen 7's 65W TDP reflects their intended environments: efficiency-focused mobile computing versus desktop performance. The Ryzen 5's higher boost clock (4.90 GHz) and newer node help it win single-thread Passmark, but the Ryzen 7's extra two cores and higher base clock drive its sweeping multi-core victories.