Intel Pentium Gold G6600 vs Intel Xeon E5-1607 v3 Comparison

The benchmark data is unambiguous: the Intel Xeon E5-1607 v3 wins all five head-to-head comparisons against the Intel Pentium Gold G6600. The Xeon’s advantage is consistent and narrow, ranging from 14.4% to 14.5% across every test, making it the faster part in both single- and multi-threaded workloads.

Head-to-Head Benchmarks

The Xeon E5-1607 v3 dominates every measured test, with a uniform performance edge over the Pentium Gold G6600. In Cinebench R15 multi-core, the Xeon scores 422 against the Pentium’s 361, a 14.5% deficit for the latter. The gap holds steady in Cinebench R20 multi-core, where the Xeon posts 1761 versus 1507, again a 14.4% difference. The pattern repeats in Cinebench R23 multi-core: 4193 for the Xeon versus 3589 for the Pentium, a 14.4% margin.

Single-core results tell the same story. In Cinebench R20 single-core, the Xeon scores 248 while the Pentium manages 212, a 14.5% gap. Cinebench R23 single-core shows the Xeon at 591 against the Pentium’s 506, a 14.4% difference. The consistency of these deltas is notable; the Xeon does not merely win in one workload type but across the board, with no test where the Pentium closes the gap or flips the result.

The data shows the Xeon’s advantage is not a matter of scaling with more cores, since both parts have four threads. The Pentium Gold G6600 has 2 cores and 4 threads, while the Xeon E5-1607 v3 has 4 cores and 4 threads. Despite the Xeon’s lower base clock of 3.10 GHz versus the Pentium’s 4.20 GHz, the Xeon still leads in every benchmark. This indicates that per-core efficiency and memory subsystem advantages outweigh the Pentium’s raw clock speed.

The average benchmark scores reflect this overall picture: the Pentium Gold G6600 averages 1235 points, while the Xeon E5-1607 v3 averages 1212 points. Interestingly, the Pentium’s average is slightly higher despite losing every head-to-head test, because the Pentium has more single-core benchmark results in its set that pull the average up. The Xeon’s benchmark suite includes only one Cinebench R15 single-core result (59 points), which drags its average down. This is a reminder that average scores can be skewed by test composition, but the head-to-head comparisons are direct and conclusive.

Where Each One Wins

The Xeon E5-1607 v3 wins every benchmark category in the head-to-head data, so there is no workload where the Pentium Gold G6600 comes out ahead. The Xeon’s victories span both multi-core and single-core tests, meaning it is faster for rendering, encoding, and general single-threaded responsiveness. In Cinebench R15, R20, and R23 multi-core tests, the Xeon’s 4 physical cores provide a clear advantage over the Pentium’s 2 cores, even though both have 4 threads. The Xeon’s larger 10 MB shared L3 cache versus the Pentium’s 4 MB likely contributes to this sustained lead.

For single-core performance, the Xeon also wins, which is more surprising given the Pentium’s higher 4.20 GHz base clock. The Xeon’s 3.10 GHz clock is lower, but its Haswell architecture delivers more instructions per clock, resulting in higher scores in both Cinebench R20 and R23 single-core tests. The Pentium’s Comet Lake architecture is newer (14 nm versus 22 nm), but the data shows this did not translate into a single-core win.

The Pentium Gold G6600 does have integrated graphics (UHD Graphics 630), while the Xeon has none, so for systems requiring a display output without a discrete GPU, the Pentium is the only option. However, in pure CPU compute benchmarks, the Pentium has zero wins. The Xeon also supports ECC memory, which the Pentium does not, making the Xeon suitable for error-correcting workloads.

Architecture Differences

The two processors come from different eras and design philosophies. The Pentium Gold G6600 uses the Comet Lake architecture on a 14 nm process, released in 2020. The Xeon E5-1607 v3 uses the Haswell-EP architecture on a 22 nm process, released in 2014. The Xeon’s transistor count is listed at 2,600 million on a 356 mm² die, while the Pentium’s transistor count and die size are not provided.

Core and cache configurations differ substantially. The Pentium has 2 cores and 4 threads, with 64 KB L1 and 256 KB L2 per core, plus 4 MB shared L3. The Xeon has 4 cores and 4 threads, with the same per-core L1 and L2 sizes, but a significantly larger 10 MB shared L3 cache. The Xeon’s extra physical cores and larger cache are key factors in its benchmark dominance.

Memory support also diverges. Both support DDR4, but the Pentium uses a dual-channel memory bus with 42.7 GB/s bandwidth, while the Xeon uses a quad-channel bus with 59.7 GB/s bandwidth. The Xeon’s higher memory bandwidth is a clear architectural advantage for data-intensive tasks. The Xeon also supports ECC memory, whereas the Pentium does not.

PCIe connectivity differs: the Pentium offers Gen 3 with 16 lanes (CPU only), while the Xeon offers Gen 3 with 40 lanes (CPU only). The Xeon’s 40 lanes are typical for server/workstation platforms, allowing more expansion devices. The Pentium includes integrated graphics (UHD Graphics 630), while the Xeon has none, reflecting its server/workstation market segment. The Xeon’s TDP is 140 watts versus the Pentium’s 58 watts, highlighting the Xeon’s higher power draw for its higher performance and platform features.

FAQ

Q: Why does the Xeon E5-1607 v3 win every benchmark despite the Pentium’s higher clock speed?

A: The Xeon has 4 physical cores versus the Pentium’s 2, and it also has a larger 10 MB L3 cache and higher memory bandwidth (59.7 GB/s versus 42.7 GB/s). The benchmark data shows the Xeon leads by 14.4-14.5% in every test, indicating architectural efficiency overcomes the Pentium’s 4.20 GHz base clock.

Q: Which processor has better single-core performance?

A: The Xeon E5-1607 v3 wins both single-core tests. In Cinebench R20 single-core, the Xeon scores 248 against the Pentium’s 212, and in Cinebench R23 single-core, the Xeon scores 591 against 506. This is a 14.4-14.5% advantage for the Xeon.

Q: Does the Pentium Gold G6600 have any advantages in the benchmark data?

A: In the head-to-head benchmarks, the Pentium wins zero tests. However, its average benchmark score is 1235 versus the Xeon’s 1212, but this is due to different test suites rather than actual performance superiority. The Pentium does have integrated graphics, which the Xeon lacks.

Q: What memory features differentiate the two CPUs?

A: The Xeon supports ECC memory, while the Pentium does not. The Xeon also uses a quad-channel memory bus with 59.7 GB/s bandwidth, whereas the Pentium uses dual-channel with 42.7 GB/s. Both support DDR4.

Q: Are these processors from the same generation?

A: No. The Pentium Gold G6600 is from the Comet Lake generation on a 14 nm process, released in 2020. The Xeon E5-1607 v3 is from the Haswell-EP generation on a 22 nm process, released in 2014. The Xeon is listed as end-of-life, while the Pentium is active.

Q: How do these CPUs compare to their nearest rivals in average score?

A: The Pentium’s nearest rival is the Intel Core i3-8109U with a 0% delta, and it also sits near the Intel Core i7-3610QM (-0.8%) and Intel Core i5-2500 (1.2%). The Xeon’s nearest rival is the Intel Core i3-7300T (0.1% delta), with others like the Intel Xeon E5645 (0.1%) and Intel Core i3-8121U (0.2%) close behind. Both CPUs have a 34th percentile ranking among all CPUs.

Specification Differences

| Specification | Intel Pentium Gold G6600 | Intel Xeon E5-1607 v3 |

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

| Cores | 2 | 4 |

| Threads | 4 | 4 |

| Base Clock | 4.20 GHz | 3.10 GHz |

| TDP | 58 W | 140 W |

| Socket | Intel Socket 1200 | Intel Socket 2011-3 |

| Architecture | Comet Lake | Haswell |

| Codename | Comet Lake | Haswell-EP |

| Process Node | 14 nm | 22 nm |

| Transistors | Not listed | 2,600 million |

| Die Size | Not listed | 356 mm² |

| L3 Cache | 4 MB (shared) | 10 MB (shared) |

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

| Memory Bandwidth | 42.7 GB/s | 59.7 GB/s |

| ECC Memory | No | Yes |

| PCIe | Gen 3, 16 Lanes (CPU only) | Gen 3, 40 Lanes (CPU only) |

| Integrated Graphics | UHD Graphics 630 | None |

| Market Segment | Desktop | Server/Workstation |

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

| Release Date | 2020-04-29 | 2014-09-07 |

| Part Number | SRH3S | QGDASR20M |

The Verdict

The data is decisive: the Intel Xeon E5-1607 v3 is the faster processor in every benchmark recorded. It wins all five head-to-head tests by roughly 14.5%, covering both multi-core and single-core workloads. For users prioritizing raw CPU compute performance, the Xeon is the clear choice, despite its older architecture and lower clock speed.

The Xeon’s advantages extend beyond raw speed. Its quad-channel memory bus with 59.7 GB/s bandwidth and ECC support make it suitable for server or workstation environments where data integrity and memory throughput matter. Its 40 PCIe lanes also allow for more expansion than the Pentium’s 16 lanes. However, the Xeon’s 140 W TDP is more than double the Pentium’s 58 W, so power efficiency is a concern for compact or low-power builds.

The Pentium Gold G6600’s only clear advantage is its integrated UHD Graphics 630, which the Xeon lacks entirely. This makes the Pentium viable for basic systems without a discrete GPU. Its newer 14 nm Comet Lake architecture and higher 4.20 GHz base clock do not result in any benchmark wins, though its average score of 1235 slightly exceeds the Xeon’s 1212 due to test composition differences.

For a user building a small desktop with integrated graphics needs, the Pentium Gold G6600 is the only option between the two. For any workload that benefits from multi-core performance, memory bandwidth, or ECC reliability, the Xeon E5-1607 v3 is the superior part. The Xeon also offers more physical cores (4 versus 2) and a larger L3 cache (10 MB versus 4 MB), which are structural advantages that the benchmark data confirms. If forced to choose based solely on performance, the Xeon wins outright.