Intel Core i7-8086K vs Intel Xeon E-2278GE Comparison

Head-to-Head Benchmarks

The benchmark data presents a remarkably consistent picture: the Intel Xeon E-2278GE wins every single head-to-head comparison against the Intel Core i7-8086K. Across six Cinebench tests, the Xeon E-2278GE takes all six wins, while the Core i7-8086K records zero victories. The margins are similarly uniform, with the Xeon leading by 13.5% to 13.8% in every test.

Starting with multi-core performance in Cinebench R15, the Xeon E-2278GE scores 1372 against the Core i7-8086K's 1206, a 13.8% advantage. This pattern repeats in Cinebench R20 multi-core, where the Xeon scores 5719 versus 5029, a 13.7% lead. In the more modern Cinebench R23 multi-core test, the Xeon posts 13619 compared to 11975, again 13.7% ahead. These consistent margins indicate a structural advantage rather than a workload-specific quirk.

Single-core results tell the same story, though the Xeon's edge is slightly narrower in percentage terms. In Cinebench R15 single-core, the Xeon scores 193 against the Core i7's 170, a 13.5% difference. Cinebench R20 single-core shows 807 versus 709, a 13.8% lead, while Cinebench R23 single-core sees 1922 against 1690, a 13.7% gap. The Xeon's single-core advantage is nearly identical to its multi-core advantage, suggesting the performance difference is not simply a matter of core count.

The average benchmark scores reinforce this trend. The Xeon E-2278GE holds an average benchmark score of 3939, placing it in the 57th percentile of all CPUs in the database. The Core i7-8086K averages 3800, sitting at the 56th percentile. The Xeon's nearest rivals include the AMD Ryzen 9 5900HS at 3924 (0.4% behind the Xeon) and the AMD Ryzen 3 7330U at 3958 (0.5% ahead). The Core i7-8086K's closest competitor is the Intel Core i7-9700KF at 3787, which trails the Core i7 by 0.3%.

Architecture Differences

Both processors share the same fundamental architecture, as both are built on Intel's Coffee Lake design using a 14 nm process node from Intel's own foundry. They also share the same Intel Socket 1151 and both support DDR4 memory through a dual-channel memory bus with a bandwidth of 42.7 GB/s. The PCIe configuration is identical as well: Gen 3 with 16 lanes from the CPU.

The core counts differ significantly. The Xeon E-2278GE provides 8 cores and 16 threads, while the Core i7-8086K offers 6 cores and 12 threads. This two-core and four-thread advantage explains much of the Xeon's multi-core performance lead. The Xeon's base clock is 3.30 GHz with a boost clock of 4.70 GHz, whereas the Core i7-8086K runs at a 4.00 GHz base and boosts to 5.00 GHz. Despite the Core i7's higher clock speeds, the Xeon still wins every benchmark, indicating that its additional cores and threads more than compensate for the clock deficit.

Cache hierarchies differ as well. Both chips use 64 KB of L1 cache per core and 256 KB of L2 cache per core, but the shared L3 cache is larger on the Xeon at 16 MB versus 12 MB on the Core i7. The Xeon also has a documented die size of 180 mm², while no die size is recorded for the Core i7-8086K.

The integrated graphics differ: the Xeon E-2278GE uses UHD Graphics P630, while the Core i7-8086K uses UHD Graphics 630. The Xeon supports ECC memory, which the Core i7 does not. The Xeon is classified as a Server/Workstation part, while the Core i7 is a Desktop processor. The Xeon's multiplier is locked, whereas the Core i7-8086K has an unlocked multiplier. The Xeon's release date is later, coming in 2019-06-10, while the Core i7 launched on 2018-06-04.

FAQ

Q: Which processor has more cores and threads?

A: The Intel Xeon E-2278GE has 8 cores and 16 threads, while the Intel Core i7-8086K has 6 cores and 12 threads.

Q: Does the Xeon E-2278GE support ECC memory?

A: Yes, the Xeon E-2278GE supports ECC memory. The Core i7-8086K does not support ECC memory.

Q: Which processor wins in Cinebench R23 multi-core?

A: The Xeon E-2278GE scores 13619 in Cinebench R23 multi-core, beating the Core i7-8086K's 11975 by 13.7%.

Q: Are both processors based on the same architecture?

A: Yes, both are built on Coffee Lake architecture using a 14 nm process node from Intel.

Q: What is the difference in base clock speeds?

A: The Core i7-8086K has a higher base clock of 4.00 GHz, while the Xeon E-2278GE has a base clock of 3.30 GHz. The Core i7 also boosts higher at 5.00 GHz versus 4.70 GHz.

Q: Which processor has a higher average benchmark score?

A: The Xeon E-2278GE has an average benchmark score of 3939, compared to 3800 for the Core i7-8086K.

Specification Differences

The two processors differ in several key specification areas. The Xeon E-2278GE offers 8 cores and 16 threads, while the Core i7-8086K provides 6 cores and 12 threads. Base clocks are 3.30 GHz for the Xeon and 4.00 GHz for the Core i7. Boost clocks are 4.70 GHz for the Xeon and 5.00 GHz for the Core i7. The Xeon has a TDP of 80 watts, while the Core i7 is rated at 95 watts.

L3 cache differs, with the Xeon featuring 16 MB shared and the Core i7 featuring 12 MB shared. The die size is recorded for the Xeon at 180 mm², but no die size is listed for the Core i7. ECC memory support is present on the Xeon but absent on the Core i7. The integrated graphics are UHD Graphics P630 on the Xeon and UHD Graphics 630 on the Core i7.

Market segments differ: the Xeon is a Server/Workstation part, while the Core i7 is a Desktop processor. The multiplier is locked on the Xeon and unlocked on the Core i7. The release dates are 2019-06-10 for the Xeon and 2018-06-04 for the Core i7. The part numbers are SRGDY for the Xeon and SR3QQBX80684I78086K for the Core i7. The launch MSRP for the Xeon is $519, and the launch MSRP for the Core i7 is $425.

Where Each One Wins

The Intel Xeon E-2278GE wins in every measured benchmark category. Its 13.8% lead in Cinebench R15 multi-core and 13.7% lead in Cinebench R20 multi-core demonstrate a clear advantage in heavily threaded workloads. The single-core wins, though slightly smaller at 13.5% to 13.8%, still favor the Xeon across all three Cinebench versions. The Xeon's 57th percentile ranking versus the Core i7's 56th percentile confirms its overall standing is higher in the database.

The Core i7-8086K does not win any of the six head-to-head benchmark comparisons. However, it does have advantages in specific specification areas. Its higher base clock of 4.00 GHz and boost clock of 5.00 GHz give it a clock-speed edge that could matter in scenarios where the additional cores of the Xeon are not utilized. Its unlocked multiplier allows for overclocking, which the locked Xeon cannot offer. The Core i7 also has a lower launch MSRP of $425 compared to the Xeon's $519.

For workloads that rely on single-threaded responsiveness, the Core i7's higher clock speeds might provide an edge in real-world applications not captured by the recorded benchmarks. The Xeon's ECC memory support and larger 16 MB L3 cache make it better suited for stability-critical server or workstation environments.

The Verdict

The benchmark data points decisively toward the Intel Xeon E-2278GE for raw performance. It wins all six head-to-head tests with margins between 13.5% and 13.8%, and its average benchmark score of 3939 exceeds the Core i7-8086K's 3800. The Xeon's additional two cores and four threads, combined with its larger 16 MB L3 cache, provide a structural performance advantage that higher clock speeds on the Core i7 cannot overcome.

The Core i7-8086K remains relevant for users who prioritize its unlocked multiplier for overclocking or its higher 5.00 GHz boost clock. Its lower launch MSRP of $425 also distinguishes it from the Xeon's $519 launch MSRP. For desktop enthusiasts seeking maximum clock speeds and overclocking flexibility, the Core i7-8086K presents a compelling specification sheet.

For server and workstation deployments where ECC memory support is required, the Xeon E-2278GE is the only option of the two, as the Core i7 does not support ECC memory. The Xeon's lower 80-watt TDP also makes it more power-efficient on paper despite delivering higher benchmark scores.

The data suggests that users who need the highest measured performance in Cinebench workloads should choose the Xeon E-2278GE. Users who value the unlocked multiplier and higher boost clock of the Core i7-8086K, or who require a desktop-oriented part with a lower launch MSRP, may prefer the Core i7 despite its benchmark deficit. The Xeon's consistent wins across all six tests, however, make it the stronger performer in the recorded benchmarks.