Intel Core i7-8850H vs Intel Xeon E5-2643 v3 Comparison

Head-to-Head Benchmarks

The benchmark data presents a clear and consistent picture: the Intel Xeon E5-2643 v3 wins every single head-to-head matchup against the Intel Core i7-8850H. Out of six recorded tests, the Xeon takes all six, though the margins are uniformly narrow. The largest gap appears in Cinebench R15 single-core, where the Xeon scores 123 against the Core i7's 120, a delta of -2.4% from the Core i7's perspective. The smallest relative difference, at -1.9%, occurs in Cinebench R20 single-core, where the Xeon posts 514 versus 504.

The multi-core results follow the same pattern. In Cinebench R15 multi-core, the Xeon records 875 while the Core i7 manages 857, a 2.1% deficit. Cinebench R20 multi-core shows 3646 for the Xeon and 3574 for the Core i7, a 2% gap. Cinebench R23 multi-core repeats that exact 2% delta, with the Xeon at 8682 and the Core i7 at 8511. The single-core Cinebench R23 test mirrors the multi-core margin exactly: 1225 versus 1201, again a 2% difference.

What stands out is the consistency of the Xeon's advantage. Every test, regardless of workload type or rendering engine, lands within a tight band of 1.9% to 2.4%. There is no scenario in the recorded data where the Core i7 pulls ahead. The average benchmark score in the database reinforces this: the Core i7 sits at 2604, while the Xeon averages 2511. Interestingly, the Core i7 actually holds a higher average score despite losing every head-to-head test, which indicates the benchmarks used for the average include a broader set of workloads than the six direct comparisons shown here.

When placed against their respective nearest rivals, both CPUs occupy similar performance tiers. The Core i7's closest competitor, the AMD Ryzen 3 PRO 4355GE, scores 2596, just 0.3% behind. The Intel Xeon E-2174G trails by 0.6%, and the Xeon E5-4620 v3 also trails by 0.6%. On the Xeon E5-2643 v3 side, the Intel Xeon E-2144G is 0.1% behind, the Xeon E5-2630 v3 is 0.2% ahead, and the Core i5-1155G7 trails by 0.6%. Both processors land at the 49th percentile among all CPUs in the database, placing them squarely in the mid-range of overall performance.

Architecture Differences

The two processors come from different architectural eras and target different market segments, which explains their similar benchmark results despite vastly different underlying designs. The Core i7-8850H is a Coffee Lake-H part built on Intel's 14 nm process, with a die size of 149 mm². It uses the Intel BGA 1440 socket, indicating a mobile, soldered design. The Xeon E5-2643 v3 is a Haswell-EP part on the older 22 nm node, with a substantially larger die at 356 mm² and 2,600 million transistors. It uses the Intel Socket 2011-3, a desktop/workstation platform.

Both CPUs offer 6 cores and 12 threads, so the parallel workload capacity is identical on paper. The cache configuration differs notably. The Core i7 carries 64 KB of L1 per core, 256 KB of L2 per core, and 12 MB of shared L3. The Xeon matches the per-core L1 and L2 sizes but doubles the shared L3 to 20 MB. That extra 8 MB of L3 could benefit workloads with large working sets, though the benchmark data does not isolate cache-sensitive tests.

Clock speeds tell a different story. The Core i7 has a base clock of 2.70 GHz and a boost clock of 4.30 GHz, giving it a much higher maximum frequency. The Xeon starts at 3.40 GHz base but only boosts to 3.70 GHz. The Core i7's 4.30 GHz boost is 0.60 GHz higher than the Xeon's ceiling, yet the Xeon still wins every benchmark. This suggests the Xeon's architecture, memory subsystem, or power delivery allows it to sustain performance more effectively despite lower peak clocks.

Power consumption diverges sharply. The Core i7 is rated at 45 W TDP, typical for a mobile processor. The Xeon draws 135 W TDP, three times the power budget of the Core i7. That higher power envelope likely allows the Xeon to maintain its clocks under sustained load, whereas the Core i7 may be constrained by thermal and power limits in a mobile chassis.

Memory support also differs. Both support DDR4, but the Xeon adds quad-channel memory with a recorded bandwidth of 68.3 GB/s, while the Core i7's memory bus width and bandwidth are not listed in the database. The Xeon also supports ECC memory, while the Core i7 does not. PCIe connectivity is documented for the Xeon as Gen 3 with 40 lanes from the CPU, while the Core i7's PCIe configuration is unlisted.

The Core i7 includes integrated graphics in the form of UHD 630, which the Xeon lacks entirely. The Xeon is classified as a Server/Workstation part, while the Core i7 is a Mobile part. The Core i7 launched in April 2018, while the Xeon arrived in September 2014, meaning the Xeon is nearly four years older yet still competitive.

FAQ

Q: Which processor has the higher single-core performance?

A: The Intel Xeon E5-2643 v3 wins every single-core test in the head-to-head data. In Cinebench R15, it scores 123 versus 120 for the Core i7-8850H. In Cinebench R20, it scores 514 versus 504. In Cinebench R23, it scores 1225 versus 1201.

Q: Does the Core i7-8850H win any benchmark in the direct comparison?

A: No. The head-to-head data records zero wins for the Core i7-8850H and six wins for the Xeon E5-2643 v3. The closest margin is 1.9% in Cinebench R20 single-core.

Q: How do the cache sizes compare?

A: Both CPUs have 64 KB of L1 cache and 256 KB of L2 cache per core. The shared L3 cache differs: the Core i7 has 12 MB, while the Xeon has 20 MB.

Q: What is the TDP difference between the two?

A: The Core i7-8850H is rated at 45 W, while the Xeon E5-2643 v3 is rated at 135 W. That is a threefold difference in power budget.

Q: Which processor supports ECC memory?

A: Only the Xeon E5-2643 v3 supports ECC memory. The Core i7-8850H does not have ECC support listed in the database.

Q: Are these processors still in production?

A: Both are marked as end-of-life in the database. The Core i7 was released in April 2018, and the Xeon was released in September 2014.

The Verdict

The data points to the Xeon E5-2643 v3 as the marginally faster processor across all recorded benchmarks. Six wins out of six direct comparisons, with deltas ranging from 1.9% to 2.4%, establishes a consistent if modest performance advantage. However, the Core i7-8850H counters with a higher average benchmark score of 2604 against the Xeon's 2511, which complicates a simple victory declaration.

The choice between these two depends heavily on the intended use case and platform constraints. The Core i7 is a mobile part with integrated graphics, a 45 W TDP, and a boost clock of 4.30 GHz. It fits into a laptop or compact mobile workstation where power and space are limited. The Xeon is a server/workstation part with a 135 W TDP, quad-channel DDR4, ECC support, and 40 PCIe Gen 3 lanes from the CPU. It belongs in a full-size workstation or server motherboard with Socket 2011-3.

For raw benchmark performance, the Xeon wins, but the margin is thin enough that real-world differences would be difficult to perceive outside of sustained, memory-bandwidth-heavy workloads. The Core i7's significantly lower TDP and integrated graphics make it the practical choice for mobile systems, while the Xeon's ECC support and memory bandwidth make it the appropriate pick for reliability-focused server or workstation builds. The Core i7's higher boost clock does not translate into benchmark victories, indicating that the Xeon's architecture extracts more performance per clock cycle in the recorded tests.

Specification Differences

The two processors differ across nearly every major specification category. The Core i7-8850H uses the Coffee Lake architecture on a 14 nm process with a 149 mm² die, while the Xeon E5-2643 v3 uses Haswell on a 22 nm process with a 356 mm² die and 2,600 million transistors. The Core i7's base clock is 2.70 GHz and boost clock is 4.30 GHz, while the Xeon's base is 3.40 GHz and boost is 3.70 GHz. TDP is 45 W for the Core i7 and 135 W for the Xeon.

Sockets are incompatible: Intel BGA 1440 for the Core i7 versus Intel Socket 2011-3 for the Xeon. Cache differs in L3 size, with 12 MB shared on the Core i7 and 20 MB shared on the Xeon. Memory support includes DDR4 for both, but the Xeon adds quad-channel capability with 68.3 GB/s bandwidth and ECC support, while the Core i7 has no listed memory bus width or ECC. The Xeon provides 40 PCIe Gen 3 lanes from the CPU; the Core i7 has no PCIe configuration listed.

Integrated graphics are present only on the Core i7 (UHD 630). The Xeon has none. Market segments differ: Mobile for the Core i7, Server/Workstation for the Xeon. Release dates are April 2018 for the Core i7 and September 2014 for the Xeon. The Xeon has a recorded launch MSRP of $1552, while the Core i7 has no launch MSRP in the database. Neither processor has an unlocked multiplier.

Where Each One Wins

The Xeon E5-2643 v3 wins every benchmark in the direct comparison, so from a pure performance standpoint, it is the choice for workloads that rely on sustained multi-core rendering or single-threaded tasks. Its 20 MB of shared L3 cache and quad-channel memory bandwidth of 68.3 GB/s give it an edge in data-intensive server and workstation applications. ECC memory support makes it suitable for environments where data integrity is critical, such as database servers, financial modeling, or long-running scientific computations. The 40 PCIe Gen 3 lanes allow for extensive expansion in a workstation chassis.

The Core i7-8850H wins on efficiency and integration. Its 45 W TDP is one-third of the Xeon's 135 W, making it viable for laptops and mobile workstations where cooling and battery life are constraints. The integrated UHD 630 graphics eliminate the need for a discrete GPU in basic display output scenarios. Its 4.30 GHz boost clock provides high peak frequency for bursty workloads, even if the benchmark data shows it cannot match the Xeon's sustained output. The smaller 149 mm² die and 14 nm process indicate a more modern manufacturing node.

In practical terms, the Core i7 suits users who need a capable processor in a portable system, particularly where integrated graphics and low power draw are priorities. The Xeon suits users who need maximum benchmark performance, ECC reliability, and memory bandwidth in a stationary server or workstation, and who can accommodate its higher TDP and larger platform requirements. The data does not show any workload category where the Core i7 outperforms the Xeon in the recorded tests, but its lower power envelope and integrated graphics give it a clear niche in mobile computing.