AMD EPYC 7543P vs AMD Ryzen 3 8440U Comparison

# AMD Ryzen 3 8440U vs AMD EPYC 7543P

The AMD Ryzen 3 8440U and AMD EPYC 7543P represent opposite poles of AMD’s product stack: a 28 W mobile processor for thin-and-light laptops versus a 225 W server/workstation chip for dense compute. Benchmark data shows the EPYC 7543P dominates every tested workload, while the Ryzen 3 8440U counters with a far more efficient design and integrated graphics. Both CPUs land at the 70th percentile among all tested processors, but their average benchmark scores tell different stories — the Ryzen 3 8440U averages 16663, while the EPYC 7543P averages 16395, a modest 1.6% gap that obscures massive per-test swings.

Head-to-Head Benchmarks

The EPYC 7543P wins all six head-to-head tests, and the margin is brutal. In Cinebench R23 multi-core, the EPYC scores 56683 versus the Ryzen 3 8440U’s 10884 — a delta of -80.8% for the Ryzen, meaning the EPYC is roughly 5.2x faster. The single-core R23 result is similarly lopsided: 8002 versus 1536, again a -80.8% delta. This pattern repeats across the entire Cinebench suite. R20 multi-core shows 23806 versus 4571, and R20 single-core shows 3360 versus 645. Even the oldest test, R15, follows the same script: 5713 versus 1097 in multi-core and 806 versus 154 in single-core. Every single deltaPct is -80.8%, an unusual uniformity that suggests the 8440U’s scores are consistently about one-fifth of the EPYC’s across all Cinebench iterations.

The EPYC’s advantage is not merely core-count-driven. While it has 32 cores versus 4, the single-core tests also show an 80.8% deficit for the Ryzen — meaning the EPYC’s older Zen 3 architecture still delivers far higher per-thread performance in these tests. The Ryzen 3 8440U’s 4.70 GHz boost clock does not compensate for the EPYC’s superior memory bandwidth and cache hierarchy. Notably, the Ryzen 3 8440U has no head-to-head wins (winsA: 0), while the EPYC takes all six (winsB: 6).

Outside the head-to-head set, the Ryzen 3 8440U shows its strengths in other benchmarks. PassMark single-thread scores 3648, and integer math scores 37468. Floating-point math reaches 23017, data compression hits 146273, and data encryption scores 8012. The EPYC 7543P has no corresponding PassMark entries in the data pack, so direct comparison is impossible — but the Cinebench results alone establish a clear hierarchy. The Ryzen’s nearest rivals include the Intel Core Ultra 5 115U (avgScore 16753, deltaPct -0.5) and Intel Core i5-1235U (avgScore 16770, deltaPct -0.6), showing it sits within 1% of comparable mobile chips. The EPYC’s nearest rivals, meanwhile, include the AMD Ryzen 5 4600H (avgScore 16341, deltaPct 0.3) and Intel Core i7-1260U (avgScore 16320, deltaPct 0.5) — a reminder that its average score is dragged down by a lack of diverse benchmark coverage, not by weak per-thread performance.

Architecture Differences

The two processors are built on fundamentally different nodes and designs. The Ryzen 3 8440U uses Zen 4 architecture on TSMC’s 4 nm process, with a die size of 137 mm² and 20,900 million transistors. It is part of the 8000 series, codenamed Hawk Point, and targets the mobile segment with a 28 W TDP. The EPYC 7543P uses Zen 3 on TSMC’s 7 nm process, with a die size of 8x 81 mm² and 33,200 million transistors. It belongs to the EPYC 7003 series, codenamed Milan, and sits in the server/workstation segment with a 225 W TDP.

Core counts diverge sharply: the Ryzen has 4 cores and 8 threads, while the EPYC has 32 cores and 64 threads. Cache configurations are equally distinct. The Ryzen offers 64 KB L1 per core, 1 MB L2 per core, and 8 MB shared L3. The EPYC also has 64 KB L1 per core but only 512 KB L2 per core, compensated by a massive 256 MB shared L3 — 32x the Ryzen’s L3 pool. Memory support differs completely: the Ryzen uses dual-channel DDR5 with 89.6 GB/s bandwidth and no ECC support, while the EPYC uses eight-channel DDR4 with 204.8 GB/s bandwidth and full ECC memory support. PCIe connectivity also favors the EPYC: 128 Gen 4 lanes versus the Ryzen’s 14 Gen 4 lanes.

The Ryzen 3 8440U integrates a Radeon 740M GPU, making it a complete system-on-chip for laptops. The EPYC 7543P has no integrated graphics, relying on discrete GPUs or headless operation. The Ryzen’s socket is AMD Socket FP7, while the EPYC uses AMD Socket SP3. Neither chip has an unlocked multiplier. The Ryzen’s release date is December 2023; the EPYC launched in March 2021 — a two-year gap in design philosophy, with the Ryzen favoring density and efficiency, the EPYC favoring raw throughput and memory capacity.

FAQ

Q: Which processor is faster in Cinebench R23 multi-core?

A: The EPYC 7543P scores 56683 versus the Ryzen 3 8440U’s 10884, a -80.8% delta. The EPYC is approximately 5.2x faster in this workload.

Q: Does the Ryzen 3 8440U have any advantage in single-core performance?

A: No. The EPYC 7543P wins all single-core tests, including R23 (8002 versus 1536), R20 (3360 versus 645), and R15 (806 versus 154). The -80.8% delta is consistent across every Cinebench test.

Q: Can the Ryzen 3 8440U support ECC memory?

A: No. The Ryzen 3 8440U supports dual-channel DDR5 with 89.6 GB/s bandwidth and does not support ECC memory. The EPYC 7543P supports eight-channel DDR4 with 204.8 GB/s bandwidth and ECC memory.

Q: What are the integrated graphics options?

A: The Ryzen 3 8440U includes a Radeon 740M integrated GPU. The EPYC 7543P has no integrated graphics at all.

Q: How do their average benchmark scores compare?

A: The Ryzen 3 8440U averages 16663 across its benchmark suite, while the EPYC 7543P averages 16395. Despite the EPYC’s dominance in Cinebench, the Ryzen’s broader PassMark coverage keeps its average slightly higher.

Q: Which processor has more PCIe lanes?

A: The EPYC 7543P provides 128 Gen 4 lanes (CPU only), while the Ryzen 3 8440U provides 14 Gen 4 lanes (CPU only). The EPYC’s lane count is roughly 9x higher.

Specification Differences

| Field | AMD Ryzen 3 8440U | AMD EPYC 7543P |

|-------|-------------------|----------------|

| Cores | 4 | 32 |

| Threads | 8 | 64 |

| Base Clock | 3.00 GHz | 2.80 GHz |

| Boost Clock | 4.70 GHz | 3.70 GHz |

| TDP | 28 W | 225 W |

| Socket | AMD Socket FP7 | AMD Socket SP3 |

| Architecture | Zen 4 | Zen 3 |

| Codename | Hawk Point | Milan |

| Process Node | 4 nm | 7 nm |

| Transistors | 20,900 million | 33,200 million |

| Die Size | 137 mm² | 8x 81 mm² |

| L2 Cache | 1 MB (per core) | 512 KB (per core) |

| L3 Cache | 8 MB (shared) | 256 MB (shared) |

| Memory Support | DDR5 | DDR4 |

| Memory Bus | Dual-channel | Eight-channel |

| Memory Bandwidth | 89.6 GB/s | 204.8 GB/s |

| ECC Memory | false | true |

| PCIe | Gen 4, 14 Lanes (CPU only) | Gen 4, 128 Lanes (CPU only) |

| Integrated Graphics | Radeon 740M | none |

| Market Segment | Mobile | Server/Workstation |

| Release Date | 2023-12-05 | 2021-03-14 |

| Launch MSRP | none | $2730 |

The Verdict

The data is unambiguous: the AMD EPYC 7543P is the overwhelmingly faster processor in every Cinebench test, with a consistent -80.8% delta against the Ryzen 3 8440U. For anyone running multi-threaded server or workstation workloads, the EPYC’s 32 cores, 64 threads, 256 MB L3 cache, eight-channel DDR4 memory, and 128 PCIe Gen 4 lanes make it the only viable choice. Its 204.8 GB/s memory bandwidth is 2.3x the Ryzen’s, and its ECC support is mandatory for reliability-critical applications. The $2730 launch MSRP reflects its enterprise positioning.

The Ryzen 3 8440U, however, is not without merit. Its 28 W TDP is 8x lower than the EPYC’s 225 W, making it suitable for fanless or low-power mobile designs. Its integrated Radeon 740M GPU eliminates the need for a discrete graphics card, and its 4 nm process node delivers far higher transistor density — 20,900 million transistors in 137 mm² versus the EPYC’s 33,200 million across 648 mm². The Ryzen’s DDR5 memory support and newer Zen 4 architecture offer a modern feature set, and its 4.70 GHz boost clock is 1 GHz higher than the EPYC’s.

The real answer depends on the workload. Benchmark results show the EPYC 7543P is 5.2x faster in Cinebench R23 multi-core, but the Ryzen 3 8440U’s average benchmark score is actually 1.6% higher (16663 versus 16395) — a quirk driven by the EPYC’s sparse benchmark coverage. The Ryzen’s nearest rivals, like the Intel Core Ultra 5 115U, sit within 0.5% of its average score, confirming it is a competitive mobile chip. The EPYC’s nearest rivals, including the Intel Core i7-1260U, show it trails that mobile chip by 0.5% in average score — but that average excludes the EPYC’s massive Cinebench wins.

Choose the EPYC 7543P for raw compute density, memory bandwidth, and ECC reliability. Choose the Ryzen 3 8440U for mobility, efficiency, and integrated graphics. The data does not support a middle ground — these are purpose-built processors for disjoint markets.