CPU Comparison

The Intel Xeon E-2278GEL and Intel Core i5-9600KF are both 14 nm Coffee Lake parts on the Intel Socket 1151 platform, but they target opposite ends of the desktop-to-workstation spectrum. The Xeon is a low-power server/workstation chip with 8 cores and 16 threads, while the i5 is a 6-core, 6-thread desktop part with an unlocked multiplier. Across the six shared Cinebench tests in the data, the Xeon wins every single one, with margins between 12.9% and 13.3%. That sweep is notable because the i5 has a much higher boost clock, yet the Xeon’s extra cores and threads prove decisive. The average benchmark scores are nearly identical, 2956 for the Xeon versus 2935 for the i5, placing both at the 52nd percentile of all CPUs. This page breaks down where each chip wins and what the specification sheet says about their intended roles.

FAQ

Q: Which CPU has more cores and threads?

A: The Intel Xeon E-2278GEL has 8 cores and 16 threads, while the Intel Core i5-9600KF has 6 cores and 6 threads. The Xeon’s hyper-threading doubles its thread count, giving it a 10-thread advantage in heavily parallel workloads.

Q: Does the Xeon support ECC memory?

A: Yes, the Xeon E-2278GEL supports ECC memory, whereas the Core i5-9600KF does not. This makes the Xeon the only one of the two suitable for error-correcting memory configurations in workstation or server builds.

Q: What is the boost clock difference between the two?

A: The Core i5-9600KF boosts up to 4.60 GHz, which is 0.70 GHz higher than the Xeon E-2278GEL’s 3.90 GHz boost. Despite this clock advantage, the i5 loses every Cinebench test in the head-to-head comparison.

Q: Which chip is unlocked for overclocking?

A: The Core i5-9600KF has an unlocked multiplier, making it overclockable. The Xeon E-2278GEL is locked, so its multiplier cannot be adjusted.

Q: How do their average benchmark scores compare to each other?

A: The Xeon E-2278GEL has an average benchmark score of 2956, while the i5-9600KF scores 2935. The delta between them is 0.7%, meaning the Xeon is only slightly ahead on average, despite winning all Cinebench tests by over 12%.

Q: Do both CPUs use the same memory configuration?

A: Yes, both support DDR4 memory in dual-channel mode with a memory bandwidth of 42.7 GB/s. They also both use PCIe Gen 3 with 16 lanes from the CPU.

Architecture Differences

Both chips are built on Intel’s 14 nm process node and share the Coffee Lake architecture, but they diverge in several key ways. The Xeon E-2278GEL is part of the Xeon E-2200 series with the codename Coffee Lake-S WS, while the i5-9600KF belongs to the Core i5 generation labeled Coffee Lake Refresh. The Xeon has a larger die size of 180 mm², while the i5’s die size is not listed in the data.

The core configuration is the biggest architectural split. The Xeon packs 8 cores and 16 threads, whereas the i5 offers 6 cores and 6 threads, no hyper-threading. This means the Xeon has 33% more physical cores and 167% more threads. The cache hierarchy also differs: both have 64 KB of L1 and 256 KB of L2 per core, but the Xeon’s L3 cache is 16 MB shared, compared to the i5’s 9 MB shared. That is a 7 MB advantage for the Xeon, which helps when multiple cores access shared data.

The Xeon’s integrated graphics is the UHD Graphics P630, while the i5-9600KF has no integrated graphics at all, the “KF” suffix indicates a lack of iGPU. The Xeon also supports ECC memory, a feature absent on the i5, and is classified for the server/workstation market segment. The i5 is a desktop part with an unlocked multiplier, while the Xeon is locked. Both are end-of-life products, with the Xeon released on 2019-06-10 and the i5 on 2019-01-07.

Head-to-Head Benchmarks

The head-to-head data is a clean sweep for the Xeon E-2278GEL, with six wins out of six tests. The margins are remarkably consistent, hovering just above 13% across all Cinebench versions. In Cinebench R15 multi-core, the Xeon scores 1030 against the i5’s 911, a 13.1% lead. The single-core R15 test shows 145 versus 128, a 13.3% margin. Moving to R20, the Xeon posts 4292 multi-core and 605 single-core, versus 3799 and 536 for the i5, deltas of 13% and 12.9%, respectively.

The R23 results confirm the pattern: the Xeon’s 10220 multi-core score beats the i5’s 9047 by 13%, and its 1442 single-core score beats 1277 by 12.9%. The consistent 13% delta across both multi- and single-core tests is interesting. It suggests the Xeon’s advantage is not just from extra cores, its single-core performance is also higher, likely due to architectural tuning for workstation workloads. The i5 does have additional Geekbench scores in the data, 6184 multi-core and 1595 single-core, but the Xeon has no comparable Geekbench results, so those cannot be compared directly.

When looking at the nearest rivals, the Xeon’s average score of 2956 places it 0.7% ahead of the i5-9600KF’s 2935. The Xeon is also 0.3% behind the AMD Ryzen 7 PRO 4750U and 0.7% behind the Intel Xeon E5-1650 v4. The i5, meanwhile, is 0.5% ahead of the AMD Ryzen Embedded V3C14 and 0.8% ahead of the Intel Xeon E-2186M. Both chips sit at the 52nd percentile of all CPUs, indicating they are solidly mid-range performers overall.

Specification Differences

The specification sheets reveal clear divergences. The Xeon E-2278GEL has 8 cores and 16 threads; the i5-9600KF has 6 cores and 6 threads. Base clocks differ significantly: the Xeon runs at 2000.00 MHz, while the i5 starts at 3.70 GHz. Boost clocks are also different, 3.90 GHz for the Xeon versus 4.60 GHz for the i5. The TDP is a major differentiator: the Xeon draws 35 W, while the i5 consumes 95 W, a 60 W gap that highlights the Xeon’s efficiency focus.

The L3 cache is 16 MB on the Xeon versus 9 MB on the i5. ECC memory support is present only on the Xeon. Integrated graphics exist only on the Xeon (UHD Graphics P630), while the i5 has none. The market segments differ: the Xeon is for server/workstation, the i5 for desktop. The Xeon’s launch MSRP is $519, and it has a part number of SRGE2; the i5’s launch MSRP is not listed, and its part number is BX80684I59600KFBXC80684I5960KFSRFAD. The multiplier is unlocked on the i5 but locked on the Xeon. The Xeon’s die size is 180 mm², while the i5’s is not specified.

Where Each One Wins

The Xeon E-2278GEL wins in every benchmark category where both have data. Its 13% lead in multi-core tests makes it the clear choice for threaded workloads like rendering, compilation, or virtualization. The 8-core/16-thread configuration, combined with ECC memory support and a 35 W TDP, positions it as a low-power workstation workhorse. The integrated UHD Graphics P630 also means it can drive a display without a discrete GPU, which is not possible on the i5. For server or workstation builds where reliability (ECC) and power efficiency are priorities, the Xeon is the definitive winner.

The Core i5-9600KF does not win any head-to-head benchmarks, but it has strengths outside the tested metrics. Its 4.60 GHz boost clock is 0.70 GHz higher, and with an unlocked multiplier, it can be overclocked further, something the locked Xeon cannot do. For single-threaded tasks that are not captured in the Cinebench suite, the i5’s higher clocks could offer an edge in lightly threaded applications. The i5 also has Geekbench scores (6184 multi-core, 1595 single-core) that the Xeon lacks, though without a direct comparison, those numbers stand alone. Its lower core count and 95 W TDP make it a simpler desktop part, and the lack of an iGPU means it requires a discrete graphics card, but that is typical for performance desktops.

In practical terms, the Xeon is the pick for multi-threaded, reliability-focused workloads, while the i5 is a desktop overclocking part for users who prioritize raw clock speed and single-thread responsiveness. The data does not support the i5 in any Cinebench comparison, but its unlocked multiplier and higher boost clock give it a different kind of appeal for enthusiasts who value manual tuning. The average benchmark scores are close enough (0.7% delta) that real-world differences will depend heavily on the specific application and whether it can use more than six threads. For anything that scales with cores, the Xeon’s 13% margin is decisive.