AMD Ryzen 3 5400U vs Intel Xeon E5-2628L v3 Comparison

The AMD Ryzen 3 5400U and the Intel Xeon E5-2628L v3 are fundamentally different processors aimed at entirely different segments, yet their benchmark scores are surprisingly close. The Xeon E5-2628L v3 wins all six shared benchmark comparisons, but by margins so narrow that they fall within a single percentage point. However, the data reveals that the Ryzen 3 5400U is the superior choice for mobile and single-thread-light workloads, while the Xeon E5-2628L v3 is a server part with a much larger core count, higher power envelope, and enterprise features that the Ryzen lacks. The verdict is not about raw speed—it is about platform context.

Where Each One Wins

The Intel Xeon E5-2628L v3 claims a clean sweep in the head-to-head benchmark results, taking all six Cinebench tests across R15, R20, and R23 in both single-core and multi-core configurations. The margins, however, are microscopic: the largest delta is -0.8% in Cinebench R15 single-core, and every other test shows a delta of -0.7% in favor of the Xeon. This means that in purely synthetic rendering workloads, the Xeon is nominally ahead, but the performance gap is essentially negligible for real-world purposes. The Xeon's wins come from its 10 cores and 20 threads, which provide a structural advantage in multi-threaded tasks, even at a much lower boost clock.

The AMD Ryzen 3 5400U wins in a different sense: it achieves near-parity with the Xeon while consuming a fraction of the power and operating in a mobile form factor. The Ryzen's 4 cores and 8 threads are fewer, but its Zen 3 architecture and 7 nm process node allow it to compete with a 10-core server chip from a previous generation. The data shows the Ryzen is the clear winner for portable devices, where the Xeon's 75 W TDP and Socket 2011-3 platform are impractical. The Ryzen also has integrated Radeon Vega 6 graphics, which the Xeon lacks entirely, making the Ryzen a complete package for a laptop or compact system.

Architecture Differences

The architectural divide between these two chips is generational and philosophical. The AMD Ryzen 3 5400U is built on the Zen 3 architecture (codename Cezanne-U) using a 7 nm process from TSMC, with 10,700 million transistors on a 180 mm² die. In contrast, the Intel Xeon E5-2628L v3 uses the Haswell architecture (codename Haswell-EP) on Intel's 22 nm process, with 2,600 million transistors on a 356 mm² die. The Ryzen's smaller process node and newer architecture explain how it can deliver comparable performance with far fewer cores and a much lower power draw.

Cache configurations also diverge sharply. The Ryzen 3 5400U has 64 KB of L1 cache per core, 512 KB of L2 per core, and 8 MB of shared L3 cache. The Xeon E5-2628L v3 also has 64 KB of L1 per core, but only 256 KB of L2 per core, while offering a much larger 25 MB of shared L3 cache. The Xeon's larger L3 is a server-oriented design, but its smaller per-core L2 and older architecture mean it cannot translate that cache advantage into a meaningful performance lead. The Ryzen also supports 8 PCIe Gen 3 lanes (CPU only), while the Xeon provides 40 PCIe Gen 3 lanes, a massive difference for expandability in server workloads.

Head-to-Head Benchmarks

The benchmark results are remarkably consistent: the Xeon E5-2628L v3 wins every test, but by a razor-thin margin. In Cinebench R15 multi-core, the Xeon scores 949 against the Ryzen's 942, a delta of -0.7%. In R15 single-core, the Xeon leads 133 to 132, a delta of -0.8%. The pattern repeats in Cinebench R20: multi-core sees the Xeon at 3955 versus 3927 (-0.7%), and single-core sees 558 versus 554 (-0.7%). The same story holds in Cinebench R23, with the Xeon earning 9417 in multi-core against the Ryzen's 9350 (-0.7%) and 1329 in single-core against 1320 (-0.7%).

These numbers tell a clear story: the Xeon's 10 cores and 20 threads provide only a 0.7% advantage over the Ryzen's 4 cores and 8 threads in multi-threaded rendering. This is a stunning result for the Ryzen, which achieves near-identical performance with a 2.60 GHz base clock and 4.00 GHz boost clock, versus the Xeon's 2.00 GHz base and 2.50 GHz boost. The Ryzen's higher clock speeds and newer architecture completely nullify the Xeon's core-count advantage in these tests. The Xeon's wins are statistically irrelevant in practice, and the Ryzen's single-core performance is nearly identical, making the Ryzen the better daily driver for most tasks.

Specification Differences

| Specification | AMD Ryzen 3 5400U | Intel Xeon E5-2628L v3 |

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

| Cores | 4 | 10 |

| Threads | 8 | 20 |

| Base Clock | 2.60 GHz | 2.00 GHz |

| Boost Clock | 4.00 GHz | 2.50 GHz |

| TDP | 15 W | 75 W |

| Socket | AMD Socket FP6 | Intel Socket 2011-3 |

| Architecture | Zen 3 | Haswell |

| Process Node | 7 nm (TSMC) | 22 nm (Intel) |

| Transistors | 10,700 million | 2,600 million |

| Die Size | 180 mm² | 356 mm² |

| L2 Cache | 512 KB (per core) | 256 KB (per core) |

| L3 Cache | 8 MB (shared) | 25 MB (shared) |

| Memory Bus | Dual-channel | Quad-channel |

| Memory Bandwidth | 51.2 GB/s | 59.7 GB/s |

| ECC Memory | No | Yes |

| PCIe | Gen 3, 8 Lanes (CPU only) | Gen 3, 40 Lanes (CPU only) |

| Integrated Graphics | Radeon Vega 6 | None |

| Market Segment | Mobile | Server/Workstation |

| Production Status | Active | End-of-life |

| Release Date | 2021-01-11 | 2014-09-07 |

| Launch MSRP | N/A | $1364 |

The table above highlights the stark differences. The Xeon has 2.5 times the cores and threads, a quad-channel memory bus, ECC support, and 40 PCIe lanes—all server-grade features. The Ryzen counters with a 15 W TDP versus 75 W, a 7 nm process versus 22 nm, integrated graphics, and a much newer release date. The Ryzen also has a higher boost clock by 1.50 GHz, which is the primary reason it can keep pace in single-core tests.

FAQ

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

A: The Intel Xeon E5-2628L v3 scores 9417, while the AMD Ryzen 3 5400U scores 9350. The Xeon leads by 0.7%, which is a negligible difference given its 10 cores versus the Ryzen's 4.

Q: Does the Ryzen 3 5400U have integrated graphics?

A: Yes, it features Radeon Vega 6 integrated graphics. The Xeon E5-2628L v3 has no integrated graphics, requiring a discrete GPU.

Q: What is the memory bandwidth difference?

A: The Xeon E5-2628L v3 offers 59.7 GB/s via a quad-channel DDR4 bus, while the Ryzen 3 5400U provides 51.2 GB/s over dual-channel DDR4. The Xeon has a 14% bandwidth advantage.

Q: Which processor supports ECC memory?

A: The Intel Xeon E5-2628L v3 supports ECC memory, while the AMD Ryzen 3 5400U does not.

Q: What is the TDP of each chip?

A: The Ryzen 3 5400U has a 15 W TDP, suitable for mobile devices. The Xeon E5-2628L v3 has a 75 W TDP, reflecting its server/workstation design.

Q: How many PCIe lanes does each CPU provide?

A: The Xeon E5-2628L v3 provides 40 PCIe Gen 3 lanes (CPU only), while the Ryzen 3 5400U provides 8 PCIe Gen 3 lanes (CPU only).

The Verdict

The data is unambiguous: the Intel Xeon E5-2628L v3 wins every benchmark, but the wins are so small (all under 1%) that they do not constitute a real performance advantage. The Xeon's 10 cores and 20 threads are effectively neutralized by the Ryzen's Zen 3 architecture and higher clock speeds. For a user building a server or workstation with a Socket 2011-3 platform, the Xeon's 40 PCIe lanes, quad-channel memory, ECC support, and 25 MB of L3 cache make it a logical choice, despite its end-of-life status and 75 W TDP. Its launch MSRP was $1364, reflecting its enterprise positioning.

For anyone else, the AMD Ryzen 3 5400U is the clear pick. It delivers 99.3% of the Xeon's performance in Cinebench R23 multi-core while consuming 80% less power, fitting in a mobile socket, and including integrated graphics. The Ryzen's 7 nm process, newer release date, and active production status mean it is a forward-looking component, whereas the Xeon is a legacy part. Benchmark results indicate that the Ryzen is the better all-around processor for laptops, compact desktops, and general productivity. The Xeon only makes sense if the platform requires its specific server features, not for raw speed.