CPU Comparison

The Intel Xeon E5640 and Intel Core i3-10110U represent two very different approaches to computing, separated by nearly a decade of architectural evolution. The Xeon E5640 is a server-grade Westmere-EP part from 2010, built for a 32 nm process with a triple-channel DDR3 memory bus and a 12 MB shared L3 cache. The Core i3-10110U is a mobile Comet Lake-U processor from 2019, built on a 14 nm node with a much higher boost clock and integrated UHD Graphics. Despite their differences in age, core count, and market segment, benchmark data shows they land in nearly the same performance tier, making for a surprisingly close comparison.

Head-to-Head Benchmarks

The head-to-head benchmark results are remarkably tight, with the Xeon E5640 edging out the Core i3-10110U in every single test. In Cinebench R15 multi-core, the Xeon scores 332 against the i3's 326, a 1.8% advantage. That margin expands slightly in Cinebench R20 multi-core, where the Xeon's 1387 beats the i3's 1359 by 2.1%. The same 2.1% delta appears in Cinebench R20 single-core, with the Xeon at 195 and the i3 at 191. Moving to Cinebench R23, the Xeon maintains its lead in both multi-core (3303 vs 3236, a 2.1% gap) and single-core (466 vs 456, a 2.2% gap). Across five benchmarks, the Xeon wins all five, with an average delta of just over 2%.

The narrowness of these margins is the key takeaway. A 2% difference is within run-to-run variance for most workloads, meaning the two chips are functionally equivalent in raw Cinebench throughput. The Xeon achieves this with four physical cores and eight threads at a base clock of 2.67 GHz and a boost of 2.93 GHz. The i3 counters with just two cores and four threads, but its boost clock reaches 4.10 GHz, which clearly helps it stay competitive despite having half the core count. The Xeon's advantage in multi-core is expected given its extra cores, but the single-core parity is more surprising, the much higher boost clock of the i3 nearly cancels out the architectural generation gap.

The average benchmark scores tell the same story. The Xeon's average benchmark score is 1137, while the i3's is 1131, a difference of just 0.5%. Both sit at the 32nd percentile of all CPUs, reinforcing that they occupy the same performance class. The nearest rivals for the Xeon include the Intel Core i5-2550K (avg score 1136, delta 0.1%), the Intel Core i5-3570T (avg score 1136, delta 0.1%), and the AMD Athlon Silver PRO 3125GE (avg score 1138, delta -0.1%). The i3's nearest rivals are the Intel Processor N97 (avg score 1132, delta 0%), the Intel Pentium Gold G5500 (avg score 1130, delta 0.1%), and the Intel Core i3-4370 (avg score 1130, delta 0.1%). Both chips are essentially indistinguishable from their closest competitors, and from each other.

Where Each One Wins

The Xeon E5640 wins every benchmark in the head-to-head comparison, but the margins are so small that the practical implications depend heavily on workload characteristics. The Xeon's wins in multi-core tests (Cinebench R15, R20, R23) are driven by its 4-core/8-thread configuration, which provides more parallel throughput capacity. In Cinebench R23 multi-core, the Xeon's 3303 score against the i3's 3236 shows that even a decade-old server chip can leverage additional cores to outpace a newer dual-core part. For workloads that scale well with thread count, such as video encoding, 3D rendering, or scientific computing, the Xeon's architecture offers a slight edge.

The i3-10110U, despite losing every head-to-head test, has its own strengths that aren't captured in these Cinebench results. Its 4.10 GHz boost clock is dramatically higher than the Xeon's 2.93 GHz, which means in bursty, lightly-threaded workloads like web browsing, office productivity, or application launch times, the i3 is likely to feel snappier in real-world use, even if synthetic single-core scores are nearly identical. The i3 also includes integrated UHD Graphics, allowing it to function without a discrete GPU, while the Xeon has no integrated graphics and requires a separate video card. For a mobile platform, the i3's 25 W TDP versus the Xeon's 80 W TDP makes it far more suitable for battery-powered devices.

The Xeon's ECC memory support is another differentiator. It supports DDR3 with a triple-channel memory bus and ECC validation, making it suitable for server or workstation environments where data integrity is critical. The i3 supports both DDR3 and DDR4 but lacks ECC, and its memory bus configuration is not specified in the data. The Xeon also has a larger L3 cache at 12 MB shared, compared to the i3's 4 MB shared, which can advantage workloads with large working sets that fit in cache.

The Verdict

Based strictly on benchmark data, the Intel Xeon E5640 is the faster processor, winning all five Cinebench tests with margins between 1.8% and 2.2%. Its average benchmark score of 1137 is 0.5% higher than the i3's 1131. If the decision were made purely on Cinebench performance, the Xeon is the winner.

However, the data also shows that the two chips are effectively in the same performance class, both sitting at the 32nd percentile of all CPUs. The 2% delta between them is negligible for most applications. The real deciding factors are contextual. The Xeon E5640 is a server/workstation part on the Intel Socket 1366 platform, requiring a compatible motherboard and discrete graphics. It is end-of-life, released in March 2010, and has a TDP of 80 W. The Core i3-10110U is a mobile part on Intel BGA 1440, released in August 2019, with a 25 W TDP and integrated graphics.

For someone building a workstation with a discrete GPU and needing ECC memory support, the Xeon's slight performance edge and server-grade features make it the logical choice. For a mobile or compact system where power efficiency, integrated graphics, and higher boost clocks matter, the i3 is the preferable option despite losing the benchmark comparison. The data does not support declaring a universal winner; it supports matching the chip to the use case.

FAQ

Q: Which processor has a higher multi-core score in Cinebench R23?

A: The Intel Xeon E5640 scores 3303 in Cinebench R23 multi-core, while the Intel Core i3-10110U scores 3236. The Xeon leads by 2.1%.

Q: Are the two processors in the same performance percentile?

A: Yes, both the Intel Xeon E5640 and the Intel Core i3-10110U are at the 32nd percentile of all CPUs, indicating they perform in the same tier.

Q: Does the Core i3-10110U support ECC memory?

A: No, the Core i3-10110U does not support ECC memory. The Xeon E5640 does support ECC memory, along with a triple-channel DDR3 memory bus.

Q: What is the core and thread count difference?

A: The Intel Xeon E5640 has 4 cores and 8 threads, while the Intel Core i3-10110U has 2 cores and 4 threads.

Q: What are the boost clock speeds?

A: The Intel Xeon E5640 has a boost clock of 2.93 GHz, while the Intel Core i3-10110U has a much higher boost clock of 4.10 GHz.

Q: Which processor has integrated graphics?

A: Only the Intel Core i3-10110U has integrated graphics, listed as UHD Graphics. The Intel Xeon E5640 has no integrated graphics.

Architecture Differences

The architectural gap between these two processors spans multiple generations of Intel design. The Xeon E5640 is built on the Westmere architecture, specifically the Westmere-EP codename, using a 32 nm process node. It contains 1,170 million transistors on a 239 mm² die. The Core i3-10110U uses the Comet Lake architecture, specifically Comet Lake-U, on a 14 nm process node. The data does not provide transistor count or die size for the i3.

The Xeon's Westmere design is fundamentally a server architecture, supporting a triple-channel DDR3 memory bus with ECC capability. Its PCIe interface is Gen 2. The i3's Comet Lake design is a mobile architecture supporting both DDR3 and DDR4 memory, but the memory bus configuration is not specified. The i3 includes integrated UHD Graphics, a feature entirely absent from the Xeon. Both processors have the same L1 and L2 cache sizes per core, 64 KB and 256 KB respectively, but the L3 cache differs significantly: the Xeon has 12 MB shared, while the i3 has only 4 MB shared.

The production status of both is end-of-life, but their release dates are nearly a decade apart. The Xeon was released in March 2010, while the i3 was released in August 2019. Neither processor has an unlocked multiplier. The Xeon's market segment is Server/Workstation, while the i3's is Mobile. Neither has a launch MSRP listed in the data.

Specification Differences

The two processors differ across nearly every specification field in the data. The Xeon E5640 has 4 cores and 8 threads, while the i3-10110U has 2 cores and 4 threads. The Xeon's base clock is 2.67 GHz and boost clock is 2.93 GHz; the i3's base clock is 2.10 GHz but its boost clock reaches 4.10 GHz. TDP differs substantially: the Xeon draws 80 W, while the i3 draws only 25 W.

The sockets are incompatible: the Xeon uses Intel Socket 1366, while the i3 uses Intel BGA 1440. The process node differs (32 nm for the Xeon, 14 nm for the i3), and the memory support is different, the Xeon supports DDR3 only, while the i3 supports both DDR3 and DDR4. The Xeon has a triple-channel memory bus, while the i3's memory bus is not specified. ECC memory support is present on the Xeon but absent on the i3. The Xeon supports PCIe Gen 2, while the i3's PCIe version is not specified. Integrated graphics are present only on the i3 (UHD Graphics). The Xeon's market segment is Server/Workstation, while the i3's is Mobile. The Xeon has a part number (SLBVC), while the i3 does not list one.