AMD EPYC 7371 vs Intel Core i5-6500 Comparison

# Intel Core i5-6500 vs AMD EPYC 7371: A Study in Scale and Scope

The AMD EPYC 7371 dominates the Intel Core i5-6500 across every recorded benchmark, winning all six head-to-head tests with a consistent deltaPct of roughly -81.8% in favor of the EPYC. Despite this lopsided result, both processors land at the 63rd percentile among all CPUs, and their average benchmark scores are nearly identical—7569 for the Intel and 7568 for the AMD. This suggests that the average score masks the fundamental difference: the i5-6500 is a modest desktop chip, while the EPYC 7371 is a server-class workhorse with 16 cores and 32 threads. The data reveals a tale of two markets, not a close contest.

Where Each One Wins

The Intel Core i5-6500 wins nowhere in the head-to-head comparisons. Every single benchmark—from Cinebench R15 to Cinebench R23, both single-core and multi-core variants—goes to the AMD EPYC 7371. The i5-6500’s only strength lies in its efficiency profile, not its performance output. With a TDP of 65 watts versus 170 watts for the EPYC, the Intel part consumes far less power, making it suitable for compact desktop builds where thermal headroom is tight. The EPYC, conversely, wins every performance-oriented contest by margins that range from 81.8% to 82% in the EPYC’s favor.

The EPYC 7371’s wins are not marginal; they are overwhelming. In Cinebench R23 multi-core, the EPYC scores 26164 against the i5-6500’s 4760, a gap that reflects the 4x core count and 8x thread count advantage. The single-core results tell a similar story: the EPYC’s 3693 in Cinebench R23 single-core dwarfs the i5-6500’s 672. This indicates that the EPYC’s Zen architecture is not just about raw core counts—it also delivers superior per-thread performance. For workloads like video rendering, scientific simulation, or database processing, the EPYC is the clear choice. The i5-6500, with its 4 cores and 4 threads, is suited only for light desktop tasks like web browsing or office productivity, where its lower power draw is an advantage.

Architecture Differences

The two processors represent entirely different design philosophies. The Intel Core i5-6500 is built on Skylake architecture, a 14 nm process fabricated by Intel, with a die size of 177 mm². It features 4 cores and 4 threads, with a base clock of 3.20 GHz and a boost clock of 3.60 GHz. Its cache hierarchy includes 64 KB of L1 per core, 256 KB of L2 per core, and 6 MB of shared L3 cache. The i5-6500 supports DDR4 memory in a dual-channel configuration, delivering 34.1 GB/s of bandwidth, and lacks ECC memory support. It uses Intel Socket 1151 and provides 16 PCIe Gen 3 lanes from the CPU. The chip includes integrated HD Graphics 530, making it a self-contained desktop solution.

The AMD EPYC 7371, in contrast, is a server processor from the EPYC 7001 series, built on the Zen architecture (codename Naples) using a 14 nm process from GlobalFoundries. It packs 16 cores and 32 threads, with a base clock of 3.10 GHz and a boost clock of 3.80 GHz. Its cache is substantially larger: 96 KB of L1 per core, 512 KB of L2 per core, and a massive 64 MB of shared L3 cache. The EPYC supports DDR4 across an eight-channel memory bus, yielding 170.6 GB/s of bandwidth—five times the i5-6500’s throughput. It also supports ECC memory, a critical feature for server reliability. The EPYC uses AMD Socket SP3 and has PCIe Gen 3 support, though the lane count is not specified in the data. With 4,800 million transistors on a 213 mm² die, the EPYC is a much larger and more complex chip. It has no integrated graphics, relying on a discrete GPU, and its multiplier is unlocked, allowing overclocking.

Head-to-Head Benchmarks

The benchmark data is unambiguous. In Cinebench R15 multi-core, the EPYC 7371 scores 2637 against the i5-6500’s 479, a delta of -81.8% for the Intel part. The single-core R15 test shows the EPYC at 372 versus 67, a delta of -82%. Moving to Cinebench R20, the EPYC’s multi-core score is 10988, while the i5-6500 manages only 1999—again an 81.8% deficit. In R20 single-core, the EPYC’s 1551 crushes the i5-6500’s 282, with the same delta. Cinebench R23 multi-core sees the EPYC at 26164 against 4760, and single-core at 3693 versus 672, both with an 81.8% delta in favor of the EPYC.

These deltas are remarkably consistent, hovering around 81.8-82% across all tests. This uniformity suggests that the performance gap is not workload-dependent but rather structural—the EPYC’s 16 cores, 32 threads, and larger caches provide a fixed advantage that scales across every metric. The i5-6500’s best showing is in single-core tests, where its higher base clock (3.20 GHz vs 3.10 GHz) might theoretically help, but the data shows the EPYC still wins by the same margin. This indicates that the Zen architecture’s IPC (instructions per cycle) is superior to Skylake’s, at least in these Cinebench workloads.

The i5-6500 does have additional benchmark data beyond Cinebench, including Geekbench and Passmark scores. In Geekbench multi-core, it scores 3118, and single-core 1099. Passmark results show a multithread score of 5604, single-thread of 2093, and specific workloads like data compression at 76510, floating point math at 12391, and integer math at 14585. However, since the EPYC 7371 lacks these benchmarks in the data, no direct comparison is possible. The absence of EPYC data for these tests means the i5-6500’s scores stand alone, offering no head-to-head insight.

FAQ

Q: Why does the AMD EPYC 7371 win every benchmark despite having a lower base clock?

A: The EPYC’s base clock of 3.10 GHz is lower than the i5-6500’s 3.20 GHz, but it has 16 cores and 32 threads versus 4 cores and 4 threads. The multi-core advantage is obvious, but even in single-core tests, the EPYC wins by 82% due to the Zen architecture’s superior IPC and a higher boost clock of 3.80 GHz versus 3.60 GHz.

Q: What is the significance of the consistent 81.8% delta across all Cinebench tests?

A: The uniform delta suggests a structural performance difference rather than a workload-specific one. Whether the test is single-core or multi-core, the EPYC maintains the same lead, indicating that the Zen core design is fundamentally faster than Skylake per clock, in addition to having more cores.

Q: How do the memory systems differ, and why does it matter?

A: The i5-6500 uses dual-channel DDR4 with 34.1 GB/s bandwidth, while the EPYC uses eight-channel DDR4 with 170.6 GB/s. This fivefold bandwidth advantage is critical for server workloads that access large datasets, though the Cinebench scores primarily reflect CPU compute, not memory throughput.

Q: Does the i5-6500 have any advantage in the data?

A: The i5-6500 has a lower TDP (65 watts vs 170 watts) and integrated graphics, making it more power-efficient and self-contained for desktop use. However, in terms of raw performance, it has no wins in the head-to-head benchmarks.

Q: What does the percentile ranking mean when both CPUs are at 63?

A: Both processors sit at the 63rd percentile among all CPUs, and their average benchmark scores are nearly identical (7569 vs 7568). This is because the average score is likely weighted by the available benchmarks, and the i5-6500 has many more Passmark tests that may skew its average upward.

Q: Is the EPYC 7371’s production status relevant?

A: The EPYC is listed as "Active" in production, while the i5-6500 is "End-of-life." This means the EPYC remains a viable purchase for new server builds, whereas the i5-6500 is discontinued, though this does not affect benchmark performance.

Specification Differences

| Specification | Intel Core i5-6500 | AMD EPYC 7371 |

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

| Cores | 4 | 16 |

| Threads | 4 | 32 |

| Base Clock | 3.20 GHz | 3.10 GHz |

| Boost Clock | 3.60 GHz | 3.80 GHz |

| TDP | 65 W | 170 W |

| Socket | Intel Socket 1151 | AMD Socket SP3 |

| Architecture | Skylake | Zen |

| Codename | Skylake | Naples |

| Generation | Core i5 (Skylake) | EPYC (Zen (Naples)) |

| Process Node | 14 nm | 14 nm |

| Foundry | Intel | GlobalFoundries |

| Transistors | Not specified | 4,800 million |

| Die Size | 177 mm² | 213 mm² |

| L1 Cache | 64 KB (per core) | 96 KB (per core) |

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

| L3 Cache | 6 MB (shared) | 64 MB (shared) |

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

| Memory Bandwidth | 34.1 GB/s | 170.6 GB/s |

| ECC Memory | No | Yes |

| PCIe | Gen 3, 16 Lanes (CPU only) | Gen 3 |

| Integrated Graphics | HD Graphics 530 | None |

| Market Segment | Desktop | Server/Workstation |

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

| Release Date | 2015-07-01 | 2018-11-15 |

| Multiplier Unlocked | No | Yes |

The Verdict

The data is clear: the AMD EPYC 7371 is the superior processor for any workload that benefits from raw compute power. Its 16 cores, 32 threads, and 64 MB of L3 cache deliver a commanding lead in every Cinebench test, with deltas of 81.8% or more. Server administrators and workstation users running multi-threaded applications like 3D rendering, scientific computing, or virtualization should choose the EPYC without hesitation. Its ECC memory support and eight-channel bandwidth further cement its position for reliability-critical environments.

The Intel Core i5-6500, despite its performance deficit, is not without merit. Its 65-watt TDP and integrated graphics make it an energy-efficient choice for basic desktop tasks, and its end-of-life status means it may be found in budget systems. However, for anyone comparing these two directly, the EPYC’s dominance is absolute. The i5-6500’s only conceivable edge is power consumption, but that is a design choice, not a performance metric. The verdict is unambiguous: the EPYC 7371 wins decisively, and the i5-6500 is best reserved for scenarios where its low power draw outweighs its lack of compute capability.