AMD EPYC 4344P vs AMD Ryzen 9 7845HX Comparison

FAQ

Q: Which processor has more cores and threads?

A: The AMD Ryzen 9 7845HX has 12 cores and 24 threads, while the AMD EPYC 4344P has 8 cores and 16 threads.

Q: How do their single-core Cinebench R23 scores compare?

A: The EPYC 4344P wins decisively in Cinebench R23 single-core, scoring 4042 versus the Ryzen 9 7845HX's 1852, a 54.2% advantage.

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

A: Despite having fewer cores, the EPYC 4344P wins Cinebench R23 multi-core with 28636 versus 26876, a 6.1% lead.

Q: What is the difference in their process nodes?

A: Both are built on TSMC's 5 nm process, but the Ryzen 9 7845HX uses a dual-chiplet design with 13,140 million transistors across 2x 71 mm² dies, while the EPYC 4344P is a single 71 mm² die with 6,570 million transistors.

Q: Which processor supports ECC memory?

A: Both support ECC memory, and both use dual-channel DDR5 with 83.2 GB/s bandwidth.

Q: What are their release dates?

A: The Ryzen 9 7845HX was released on 2023-01-03, while the EPYC 4344P came later on 2024-05-20.

Q: Which processor has the higher boost clock?

A: The EPYC 4344P boosts to 5.30 GHz, slightly ahead of the Ryzen 9 7845HX's 5.20 GHz.

Where Each One Wins

The recorded benchmark data splits this comparison into two clear camps. The Ryzen 9 7845HX wins 12 of the 15 head-to-head tests, with its largest margins coming in compute-heavy and throughput-oriented workloads. The EPYC 4344P takes only 3 wins, but those wins are concentrated in the most visible single-threaded and lightly threaded tests.

For raw multi-threaded throughput in older Cinebench versions, the Ryzen 9 7845HX dominates. It scores 4320 in Cinebench R15 multi-core versus 2886 for the EPYC 4344P, a 49.7% lead. Similar patterns appear across PassMark workloads: floating point math (94287 vs 63309, 48.9% ahead), integer math (155118 vs 105779, 46.6% ahead), and the prime number finding test (329 vs 165, 99.4% ahead). These are all workloads that scale with core count, and the Ryzen's 12 cores versus 8 cores explains much of the gap.

The EPYC 4344P wins in Cinebench R23 multi-core (28636 vs 26876), a surprising result given its core deficit. It also takes both single-core tests decisively. The R23 single-core margin is massive: 4042 versus 1852, a 54.2% difference. The older R15 single-core test shows a 27.5% advantage (407 vs 295). PassMark single-thread also favors the Ryzen slightly at 3935 versus 3526, an 11.6% lead, which makes the EPYC's Cinebench single-core wins stand out as workload-specific rather than a universal single-thread superiority.

For content creation, the Ryzen 9 7845HX is the stronger choice. Its 543539 PassMark data compression score versus 402701 (35% ahead) and 32789 data encryption score versus 24476 (34% ahead) indicate faster archival and security workloads. The EPYC 4344P is better suited for tasks that favor its newer architecture tuning in specific single-threaded Cinebench scenarios, though the data does not show it winning broadly across all single-threaded tests.

Architecture Differences

Both processors use AMD's Zen 4 architecture, but they come from different product families with distinct design goals. The Ryzen 9 7845HX belongs to the 7000 series and uses the Dragon Range codename, designed for high-performance mobile systems. The EPYC 4344P belongs to the EPYC 4004 series with the Raphael codename, built for server and workstation deployments.

The physical implementation differs substantially. The Ryzen 9 7845HX uses a dual-chiplet design with 2x 71 mm² dies, totaling 13,140 million transistors. The EPYC 4344P uses a single 71 mm² die with 6,570 million transistors. Both are fabricated on TSMC's 5 nm process, but the dual-die approach gives the Ryzen more surface area for cores and cache.

Cache configurations also diverge. Both share 64 KB of L1 per core and 1 MB of L2 per core. The Ryzen 9 7845HX has 64 MB of shared L3, while the EPYC 4344P has 32 MB of shared L3. This doubling of L3 cache in the Ryzen likely contributes to its strong showing in data compression and encryption tests.

Memory support is identical on paper: DDR5, dual-channel, 83.2 GB/s bandwidth, and ECC support on both. PCIe connectivity matches too, with Gen 5 and 28 CPU lanes. The integrated graphics differ in naming: Radeon 610M on the Ryzen versus Radeon Graphics on the EPYC, but the database does not provide performance data for these iGPUs.

The EPYC 4344P operates on AMD Socket AM5, while the Ryzen 9 7845HX uses AMD Socket FL1. This reflects their market segments: the EPYC is a socketed server part, while the Ryzen is a mobile BGA processor. The multiplier is unlocked on the Ryzen 9 7845HX but locked on the EPYC 4344P.

Specification Differences

The two processors differ across several key specification fields. Core count leads the list: 12 cores and 24 threads on the Ryzen 9 7845HX versus 8 cores and 16 threads on the EPYC 4344P.

Clock speeds favor the EPYC in base clock (3.80 GHz versus 3.00 GHz) and slightly in boost clock (5.30 GHz versus 5.20 GHz). The thermal design power differs by 10 watts, with the Ryzen at 55 W and the EPYC at 65 W, though the database does not include power draw measurements from testing.

L3 cache is double on the Ryzen: 64 MB versus 32 MB. The transistor count and die size differ as noted, with the Ryzen using two dies. The EPYC has a launch MSRP of $329. The Ryzen has no recorded launch MSRP.

Release dates separate them by over a year: the Ryzen launched on 2023-01-03 and the EPYC on 2024-05-20. Both are listed as active production parts. The Ryzen has a part number of 100-000000871, while the EPYC uses 100-000001479.

Head-to-Head Benchmarks

The largest win for the Ryzen 9 7845HX comes in PassMark find prime numbers, where it scores 329 versus 165, a 99.4% advantage. This test is highly dependent on integer throughput and core scaling, and the Ryzen's 12 cores deliver nearly double the result.

Cinebench R15 multi-core shows a 49.7% lead for the Ryzen (4320 versus 2886). PassMark floating point math follows at 48.9% (94287 versus 63309), and integer math at 46.6% (155118 versus 105779). Extended instructions show a 38.7% lead (41020 versus 29582). PassMark multi-thread comes in at 35.1% (45010 versus 33325). Data compression shows 35% (543539 versus 402701), and data encryption 34% (32789 versus 24476). Random string sorting favors the Ryzen by 29% (63223 versus 49001). Physics shows 18.1% (2346 versus 1987). PassMark single-thread favors the Ryzen by 11.6% (3935 versus 3526).

The EPYC 4344P's wins are fewer but significant. Cinebench R23 single-core shows a 54.2% advantage (4042 versus 1852). Cinebench R15 single-core gives it a 27.5% lead (407 versus 295). Cinebench R23 multi-core is closer, with the EPYC ahead by 6.1% (28636 versus 26876).

The R23 multi-core result is the most counterintuitive finding. Despite 4 fewer cores, the EPYC 4344P outperforms the Ryzen 9 7845HX in this modern Cinebench version. The single-core R23 gap is even more striking: a 54.2% difference suggests the EPYC's Raphael architecture delivers substantially higher per-core performance in this specific benchmark, possibly due to higher base clocks and a newer binning strategy.

The PassMark single-thread result complicates the narrative. The Ryzen wins that test by 11.6%, yet loses both Cinebench single-core tests. This indicates the two suites measure different aspects of single-threaded performance, and the EPYC's Cinebench dominance may not translate to all single-threaded applications.

The Verdict

The data points to a clear split based on workload priorities. The Ryzen 9 7845HX is the better choice for multi-threaded throughput across the majority of tested workloads. It wins 12 of 15 head-to-head benchmarks, with margins exceeding 45% in several PassMark tests and a 49.7% lead in Cinebench R15 multi-core. Its 12 cores, 24 threads, and 64 MB of L3 cache make it particularly strong for data compression, encryption, floating point, and integer math. Users running heavily parallel workloads should favor the Ryzen.

The EPYC 4344P is the better choice for specific modern single-threaded scenarios and for Cinebench R23 multi-core. Its 54.2% lead in R23 single-core is the largest single-threaded margin in the comparison, and it also wins R15 single-core by 27.5%. The 6.1% R23 multi-core win suggests that for users running recent Cinebench versions, the EPYC's per-core efficiency can overcome its core deficit. Its server/workstation positioning and AM5 socket also make it a different class of product, targeting socketed deployments rather than mobile systems.

The average benchmark scores are close: the Ryzen 9 7845HX averages 46654, and the EPYC 4344P averages 45122, a difference of about 3.3%. Both sit at the 89th percentile among all CPUs. The Ryzen's nearest rivals include the Intel Xeon w3-2535 (0% delta) and the AMD Ryzen 9 3900X (0.4% delta), while the EPYC's nearest rivals include the Intel Core i9-12900KS (0.1% delta) and the Intel Core i5-14600 (0.5% delta). This places both processors in similar overall performance tiers despite their different strengths.

For a mobile-first, high-core-count processor with strong multi-threaded performance, the Ryzen 9 7845HX is the data-backed pick. For a socketed server processor with excellent modern single-threaded Cinebench results and a compact single-die design, the EPYC 4344P stands out. The choice depends on whether the workload prioritizes raw core scaling or per-core efficiency in newer benchmark suites.