AMD EPYC 9254 vs AMD Ryzen 3 7440U Comparison

The AMD EPYC 9254 and AMD Ryzen 3 7440U are not competitors in any practical sense; they represent opposite extremes of the processor market. The EPYC 9254 is a 24-core server behemoth with a 200 W TDP, while the Ryzen 3 7440U is a 4-core, 28 W mobile chip. The benchmark data confirms a complete mismatch: the EPYC 9254 wins all six head-to-head comparisons, with margins ranging from 393.3% to 396.2%. Despite this, both processors share the same 69th percentile ranking among all CPUs, illustrating how the average benchmark score can obscure radically different performance profiles. The EPYC 9254's average score is 15756, while the Ryzen 3 7440U's is 15682, a mere 0.5% difference, which is statistically negligible given the massive gap in multithreaded throughput.

The Verdict

Choose the AMD EPYC 9254 if your workload demands massive parallel processing, high memory bandwidth, or enterprise-grade expandability. Its 24 cores and 48 threads dominate every multithreaded test: it scores 54473 in Cinebench R23 multicore versus 11042 for the Ryzen 3 7440U, a 393.3% advantage. It also offers twelve-channel memory support with 460.8 GB/s bandwidth, compared to the Ryzen's dual-channel 89.6 GB/s, and provides 128 PCIe Gen 5 lanes versus the Ryzen's 14 Gen 4 lanes. For server virtualization, database hosting, or heavy compute workloads, the EPYC 9254 is the only viable choice. Its launch MSRP was $2299.

Choose the AMD Ryzen 3 7440U if you need an efficient, integrated solution for a thin-and-light laptop. While it loses every benchmark in this comparison, it does so while consuming only 28 W versus the EPYC's 200 W. It also includes integrated Radeon 740M graphics, which the EPYC lacks entirely. For mobile productivity, light content creation, or fanless designs, the Ryzen 3 7440U is the practical pick. The data shows it performs at the same percentile level as the EPYC 9254, but that is an artifact of its strong single-thread results relative to its class, not an indication of comparable capability.

Where Each One Wins

The EPYC 9254 wins in every measurable category of raw compute. In Cinebench R15, R20, and R23, both single-core and multi-core, it leads by roughly 393-396%. The largest single-core margin is in Cinebench R15, where it scores 774 versus 156, a 396.2% difference. The multi-core margins are consistently around 393%, with the R23 test showing 54473 versus 11042. For any CPU-bound task that can utilize more than a few threads, the EPYC 9254 is categorically superior.

The Ryzen 3 7440U wins in efficiency and integration. It operates at 28 W, which is 14% of the EPYC's 200 W TDP. It supports dual-channel memory, sufficient for its 4-core design, and includes Radeon 740M integrated graphics. It also has a higher boost clock at 4.70 GHz versus the EPYC's 4.15 GHz, though this does not translate to a single-core win in the benchmarks—the EPYC's Zen 4 cores still outperform it by 393.6% in R23 single-core (7690 versus 1558). The Ryzen's advantage is purely in power draw and platform mobility, not performance.

Architecture Differences

Both processors use AMD's Zen 4 architecture, but they are fabricated on different nodes and designed for different purposes. The EPYC 9254, codenamed Genoa, is built on a 5 nm process at TSMC and uses a chiplet design with a die size of 4x 72 mm². It packs 26,280 million transistors and features a massive 128 MB shared L3 cache. The Ryzen 3 7440U, codenamed Phoenix2, is a monolithic 4 nm part with a single 137 mm² die containing 20,900 million transistors. Its L3 cache is only 8 MB.

Memory support and I/O are the most divergent areas. The EPYC 9254 uses twelve-channel DDR5 with 460.8 GB/s bandwidth, while the Ryzen 3 7440U uses dual-channel DDR5 with 89.6 GB/s. PCIe connectivity differs similarly: the EPYC offers 128 Gen 5 lanes (CPU only), while the Ryzen has 14 Gen 4 lanes. Both support ECC memory, which is notable for the mobile Ryzen part. The EPYC uses Socket SP5 and is unlocked for multi-socket server configurations, while the Ryzen is a mobile part on Socket FP7. Neither processor has an unlocked multiplier, and both are currently in active production.

FAQ

Q: Which processor has more cores and threads?

A: The AMD EPYC 9254 has 24 cores and 48 threads, while the AMD Ryzen 3 7440U has 4 cores and 8 threads. This 6x core advantage is the primary driver of the EPYC's benchmark dominance.

Q: What is the performance difference in Cinebench R23 multi-core?

A: The EPYC 9254 scores 54473, while the Ryzen 3 7440U scores 11042. The EPYC leads by 393.3%, which is the smallest multi-core margin across the R15/R20/R23 tests, but still an overwhelming victory.

Q: Does the Ryzen 3 7440U have integrated graphics?

A: Yes, the Ryzen 3 7440U includes Radeon 740M integrated graphics. The EPYC 9254 has no integrated graphics at all, requiring a discrete GPU or a specialized server solution.

Q: Which processor has higher memory bandwidth?

A: The EPYC 9254 has 460.8 GB/s of memory bandwidth across twelve channels, compared to the Ryzen 3 7440U's 89.6 GB/s across two channels. The EPYC's bandwidth is over 5x higher.

Q: Are these processors on the same manufacturing process?

A: No. The EPYC 9254 is on a 5 nm process, while the Ryzen 3 7440U is on a 4 nm process, both from TSMC. The Ryzen uses a newer node but has a smaller and simpler design.

Q: Which processor has a higher boost clock?

A: The Ryzen 3 7440U boosts to 4.70 GHz, while the EPYC 9254 boosts to 4.15 GHz. Despite the Ryzen's higher boost, the EPYC still wins all single-core benchmarks by ~394%, indicating that clock speed alone is not the determining factor.

Head-to-Head Benchmarks

The data from six Cinebench tests tells a consistent story of absolute EPYC dominance. In Cinebench R15 multi-core, the EPYC 9254 scores 5490 against the Ryzen's 1112, a 393.7% lead. Single-core R15 shows 774 versus 156, a 396.2% margin—the largest in the entire comparison. Moving to Cinebench R20, the multi-core test shows 22878 versus 4637 (393.4% delta), and single-core shows 3229 versus 654 (393.7% delta). The pattern holds in Cinebench R23, where multi-core scores are 54473 versus 11042 (393.3%) and single-core scores are 7690 versus 1558 (393.6%).

Every benchmark result is one-sided. The EPYC 9254 wins all 6 head-to-head tests, and the Ryzen 3 7440U wins none. The margins are remarkably consistent, hovering around 393-396% regardless of the test version or thread count. This consistency suggests that the performance gap is a direct function of the core and thread differential, not a quirk of any particular benchmark. Even the Ryzen's higher boost clock (4.70 GHz versus 4.15 GHz) fails to close the single-core gap, because the EPYC's superior cache hierarchy and memory subsystem compensate for its lower clock speed.

Specification Differences

The specifications that differ between these two processors are numerous and dramatic. The cores are 24 versus 4, and threads are 48 versus 8. Base clock is 2.90 GHz versus 3.00 GHz, with the EPYC having a lower base but similar boost (4.15 GHz versus 4.70 GHz). TDP is 200 W versus 28 W, a 7x difference. Socket types are completely different: AMD Socket SP5 for the EPYC, AMD Socket FP7 for the Ryzen.

Process node differs: 5 nm for the EPYC, 4 nm for the Ryzen. Transistor count is 26,280 million versus 20,900 million, while die size is 4x 72 mm² versus 137 mm². The L3 cache is 128 MB shared versus 8 MB shared—a 16x difference. Memory bus is twelve-channel versus dual-channel, with memory bandwidth at 460.8 GB/s versus 89.6 GB/s. PCIe is Gen 5 with 128 lanes versus Gen 4 with 14 lanes. The integrated graphics are absent on the EPYC and present as Radeon 740M on the Ryzen. Market segment is Server/Workstation versus Mobile. Release dates are 2022-11-09 versus 2023-05-02. The launch MSRP for the EPYC is $2299, while the Ryzen has no listed launch MSRP.