AMD EPYC 9654 vs AMD Ryzen 5 7640HS Comparison

Head-to-Head Benchmarks

The benchmark data records a decisive sweep for the AMD EPYC 9654 across every shared test. The Ryzen 5 7640HS does not register a single win in the head-to-head comparison, with the EPYC 9654 taking all four recorded benchmarks.

In Cinebench R23 multi-core, the EPYC 9654 scores 101,675 against the Ryzen 5 7640HS's 12,554. That is a delta of -87.7%, meaning the server chip delivers roughly eight times the multi-threaded rendering throughput. The gap is even more pronounced in Cinebench R23 single-core, where the EPYC 9654 posts 14,354 versus 1,715.5, a -88% delta. This result is notable because single-core performance typically favors higher clock speeds, yet the EPYC 9654's advantage here comes from its architecture and cache configuration rather than raw frequency, as its boost clock of 3.70 GHz is far lower than the Ryzen's 5.00 GHz.

Cinebench R15 tells the same story. In multi-core, the EPYC 9654 records 10,248 against 1,978, a -80.7% delta. In single-core, the EPYC 9654 scores 1,446 versus 269.5, a -81.4% delta. Across all four shared tests, the EPYC 9654 leads by margins ranging from roughly 80% to 88%. The Ryzen 5 7640HS is not competitive in any recorded workload, which aligns with the fundamental positioning of the two parts: a 35 W mobile processor versus a 360 W server/workstation processor.

The average benchmark score in the database places the EPYC 9654 at 29,409, while the Ryzen 5 7640HS sits at 30,390. Interestingly, the Ryzen 5 7640HS has a higher average score despite losing every head-to-head test, because the database's average includes a broader set of workloads, such as PassMark tests, where the mobile chip has recorded data and the EPYC 9654 does not. Both parts sit at the 81st percentile among all CPUs in the database, which indicates similar overall standing despite their vastly different roles.

The Verdict

The data leaves no ambiguity: the AMD EPYC 9654 is the superior processor in every measured benchmark shared between the two. Its 96 cores and 192 threads overwhelm the Ryzen 5 7640HS's 6 cores and 12 threads in multi-threaded workloads, and its single-core scores are also far ahead despite a lower boost clock. The EPYC 9654 wins all four head-to-head tests with deltas between -80.7% and -88%.

Who should pick which comes down to context, not performance. The Ryzen 5 7640HS is a mobile processor with a 35 W TDP, integrated Radeon 760M graphics, and a 4 nm process node. It is designed for laptops and portable systems where power efficiency and integrated graphics matter. The EPYC 9654 is a server/workstation processor with a 360 W TDP, no integrated graphics, and a 5 nm process node. It is designed for rack-mounted servers and high-density compute environments where raw throughput and memory bandwidth take priority.

The EPYC 9654 also brings a massive memory bandwidth advantage: 460.8 GB/s over a twelve-channel DDR5 bus, compared to 89.6 GB/s over a dual-channel bus on the Ryzen. It offers 128 PCIe Gen 5 lanes versus 20 PCIe Gen 4 lanes on the Ryzen. The EPYC 9654's L3 cache is 384 MB shared, versus 16 MB shared on the Ryzen. For any workload that scales with cores, cache, or memory bandwidth, the EPYC 9654 is the clear choice. For any workload that requires a self-contained mobile system with integrated graphics and low power draw, the Ryzen 5 7640HS is the only viable option of the two.

The Ryzen 5 7640HS does have a higher base clock (4.30 GHz versus 2.40 GHz) and a higher boost clock (5.00 GHz versus 3.70 GHz), but the recorded benchmarks show this does not translate into a performance win. The EPYC 9654's architectural advantages, its 96 cores, 384 MB L3 cache, and twelve-channel memory, overwhelm the clock speed difference in every test.

FAQ

Q: Which processor wins in multi-core performance?

A: The AMD EPYC 9654 wins decisively. In Cinebench R23 multi-core, it scores 101,675 versus 12,554 for the Ryzen 5 7640HS, a -87.7% delta. In Cinebench R15 multi-core, it scores 10,248 versus 1,978, a -80.7% delta.

Q: Does the Ryzen 5 7640HS win in any benchmark?

A: No. The head-to-head data records zero wins for the Ryzen 5 7640HS. The EPYC 9654 wins all four shared tests: Cinebench R15 multi-core, Cinebench R15 single-core, Cinebench R23 multi-core, and Cinebench R23 single-core.

Q: How do their clock speeds compare?

A: The Ryzen 5 7640HS has a base clock of 4.30 GHz and a boost clock of 5.00 GHz. The EPYC 9654 has a base clock of 2.40 GHz and a boost clock of 3.70 GHz. Despite the Ryzen's higher clocks, the EPYC 9654 wins every benchmark.

Q: What are the core and thread counts?

A: The Ryzen 5 7640HS has 6 cores and 12 threads. The EPYC 9654 has 96 cores and 192 threads.

Q: What memory configurations do they support?

A: The Ryzen 5 7640HS supports dual-channel DDR5 with 89.6 GB/s bandwidth. The EPYC 9654 supports twelve-channel DDR5 with 460.8 GB/s bandwidth.

Q: Do both processors support ECC memory?

A: Yes, both the Ryzen 5 7640HS and the EPYC 9654 have ECC memory support recorded in the database.

Specification Differences

The two processors differ in nearly every core specification. The Ryzen 5 7640HS has 6 cores and 12 threads, while the EPYC 9654 has 96 cores and 192 threads. Base clocks are 4.30 GHz for the Ryzen and 2.40 GHz for the EPYC. Boost clocks are 5.00 GHz for the Ryzen and 3.70 GHz for the EPYC.

TDP is a major divider: 35 W for the Ryzen 5 7640HS versus 360 W for the EPYC 9654. The sockets differ as well, with the Ryzen using AMD Socket FP8 and the EPYC using AMD Socket SP5. The Ryzen's process node is 4 nm, while the EPYC's is 5 nm, both from TSMC.

Cache configurations differ substantially. The Ryzen has 64 KB L1 per core, 1 MB L2 per core, and 16 MB shared L3. The EPYC has the same per-core L1 and L2 sizes, but its L3 is 384 MB shared. Memory support is dual-channel DDR5 on the Ryzen with 89.6 GB/s bandwidth, versus twelve-channel DDR5 on the EPYC with 460.8 GB/s bandwidth.

PCIe support also diverges: the Ryzen offers Gen 4 with 20 lanes (CPU only), while the EPYC offers Gen 5 with 128 lanes (CPU only). The Ryzen includes integrated Radeon 760M graphics; the EPYC has no integrated graphics. The EPYC 9654 has a recorded release date of 2022-11-09 and a launch MSRP of $11805. The Ryzen 5 7640HS has no launch MSRP recorded.

Architecture Differences

Both processors use AMD's Zen 4 architecture, but they come from different families and are built on different process nodes. The Ryzen 5 7640HS is part of the 7000 series, codenamed Phoenix, and belongs to the Ryzen 5 generation. The EPYC 9654 is part of the EPYC 9004 series, codenamed Genoa, and belongs to the EPYC generation.

The process nodes differ: the Ryzen 5 7640HS uses TSMC's 4 nm process, while the EPYC 9654 uses TSMC's 5 nm process. Transistor counts reflect the scale difference: the Ryzen has 25,000 million transistors on a 178 mm² die, while the EPYC has 78,840 million transistors across a 12x 72 mm² multi-die design.

Cache architecture is a key differentiator. Both have 64 KB L1 per core and 1 MB L2 per core, but L3 cache is dramatically different: 16 MB shared on the Ryzen versus 384 MB shared on the EPYC. This 24-fold difference in L3 capacity is one of the primary reasons the EPYC 9654 dominates in multi-threaded workloads, as it can hold far more working data on-die.

Memory architecture also differs fundamentally. The Ryzen uses a dual-channel DDR5 bus with 89.6 GB/s bandwidth, while the EPYC uses a twelve-channel DDR5 bus with 460.8 GB/s bandwidth. The EPYC's memory bandwidth is roughly five times higher, which matters for server workloads that stream large datasets.

The Ryzen integrates a Radeon 760M GPU, making it a complete system-on-chip for mobile devices. The EPYC has no integrated graphics, relying on discrete GPUs or headless server operation. The Ryzen's market segment is mobile; the EPYC's is server/workstation. Both are currently in active production.

Where Each One Wins

The EPYC 9654 wins every recorded benchmark, but the use cases for each processor are distinct. The EPYC 9654 is the choice for multi-threaded rendering, as shown by its Cinebench R23 multi-core score of 101,675, which is 8.1 times the Ryzen's 12,554. It is also the choice for single-threaded rendering in this comparison, with a Cinebench R23 single-core score of 14,354 versus 1,715.5.

The EPYC 9654's 384 MB L3 cache and 460.8 GB/s memory bandwidth make it suitable for server workloads that require massive data throughput. Its 128 PCIe Gen 5 lanes allow for extensive expansion, and its twelve-channel memory bus supports high-capacity configurations. The 360 W TDP and server socket (SP5) indicate a system designed for datacenter racks, not desks or laps.

The Ryzen 5 7640HS wins in the context of mobile computing. Its 35 W TDP makes it suitable for laptops, and its integrated Radeon 760M graphics eliminate the need for a discrete GPU. Its 4 nm process node and 5.00 GHz boost clock provide strong per-core frequency for a mobile part, even though the recorded benchmarks show it trailing the EPYC 9654 in every shared test. Its dual-channel memory and 20 PCIe Gen 4 lanes are appropriate for a thin-and-light or mainstream laptop.

The Ryzen 5 7640HS also has a higher average benchmark score in the database (30,390 versus 29,409), driven by PassMark workloads where it has recorded data and the EPYC 9654 does not. This does not change the head-to-head outcome, but it shows the Ryzen is a capable mobile processor in its own right. The EPYC 9654's nearest rivals include the AMD Ryzen 7 3800X and Intel Core i5-13500HX, while the Ryzen 5 7640HS's nearest rivals include the Intel Core i9-11980HK and AMD Ryzen 5 PRO 8640U, reflecting their different market positions.

For buyers who need a server CPU with massive core counts, extensive cache, and high memory bandwidth, the EPYC 9654 is the clear pick. For buyers who need a mobile CPU with integrated graphics and low power consumption, the Ryzen 5 7640HS is the appropriate choice. The benchmark data does not equivocate: the EPYC 9654 is faster in every measured test, but the Ryzen 5 7640HS serves a completely different purpose.