CPU Comparison

The Intel Core i5-3360M and the Intel Xeon E5540 represent two very different design philosophies from Intel, separated by three years of architectural evolution. The former is a 22nm dual-core mobile part built on Ivy Bridge, while the latter is a 45nm quad-core server chip from the Nehalem generation. Despite the Xeon’s double core count and thread count, the benchmark data shows a remarkably close contest, with the newer mobile chip edging ahead in every single measured test. This comparison illustrates how process node improvements and clock speed advantages can offset a raw core deficit, though the Xeon retains clear advantages in platform capabilities like memory bandwidth and ECC support.

FAQ

Q: Which processor wins the most benchmark tests?

A: The Intel Core i5-3360M wins all five head-to-head benchmark tests listed, with no wins for the Intel Xeon E5540. The deltas range from 2.5% to 3% in favor of the i5.

Q: How do the core and thread counts compare?

A: The Xeon E5540 has 4 cores and 8 threads, while the Core i5-3360M has only 2 cores and 4 threads. The Xeon offers double the parallel execution resources on paper.

Q: What is the difference in process technology?

A: The Core i5-3360M is built on a 22 nm process node, while the Xeon E5540 uses a larger 45 nm node. The i5 also has a smaller die size of 118 mm² compared to the Xeon’s 263 mm².

Q: Which processor supports ECC memory?

A: Only the Intel Xeon E5540 supports ECC memory. The Core i5-3360M does not, which reflects the Xeon’s server/workstation positioning.

Q: What is the average benchmark score difference?

A: The Core i5-3360M has an average benchmark score of 835, while the Xeon E5540 scores 820. This puts the i5 roughly 1.8% ahead on average, though both sit at the 22nd percentile of all CPUs.

Q: Do both processors have integrated graphics?

A: No. The Core i5-3360M includes Intel HD 4000 integrated graphics, while the Xeon E5540 has no integrated graphics at all.

Where Each One Wins

The benchmark sweep is entirely one-sided, but the data still reveals distinct use-case scenarios where each chip has its place. The Core i5-3360M wins all five head-to-head tests, including single-core and multi-core workloads. Its margin in Cinebench R23 single-core is 3%, the largest of any test, which points to its superior per-thread performance. This makes it the better choice for lightly-threaded applications, everyday responsiveness, and any workload where clock speed dominates. The i5’s boost clock of 3.50 GHz, compared to the Xeon’s 2.80 GHz, is the clear driver here.

The Xeon E5540, despite losing every benchmark, is not without merit. Its 4 cores and 8 threads provide a structural advantage for heavily parallel workloads, even if the older architecture cannot translate that into a win in these specific Cinebench tests. The Xeon also supports ECC memory and triple-channel DDR3 with 25.6 GB/s of bandwidth, making it suitable for memory-sensitive server tasks where data integrity and throughput matter more than raw Cinebench scores. Its market segment is Server/Workstation, and its strengths lie in platform features rather than the measured benchmarks.

In practical terms, the i5-3360M is a mobile processor designed for efficiency and single-thread performance, while the Xeon E5540 is a server chip built for reliability and multi-threaded throughput. The benchmarks show the i5 winning, but the Xeon’s extra cores and ECC support make it the logical choice in a server context where those features are mandatory.

Architecture Differences

The architectural gap between these two chips is substantial. The Core i5-3360M uses the Ivy Bridge architecture, a 22 nm design that represents Intel’s third generation of the Core microarchitecture. The Xeon E5540 is based on Nehalem with the codename Gainestown, built on a 45 nm process. This generational leap gives the i5 a significant efficiency advantage, reflected in its 35W TDP versus the Xeon’s 80W TDP, despite the i5 having fewer cores.

The die sizes tell a similar story: the i5 measures 118 mm², while the Xeon is much larger at 263 mm² with 731 million transistors. The Xeon’s larger die accommodates 8 MB of shared L3 cache, compared to the i5’s 3 MB. Both chips have identical L1 cache (64 KB per core) and L2 cache (256 KB per core), but the Xeon’s four cores give it more total L2 capacity in absolute terms.

The i5 integrates Intel HD 4000 graphics directly into the die, a feature entirely absent from the Xeon. The Xeon compensates with a triple-channel memory bus supporting DDR3 and PCIe Gen 2, while the i5 uses dual-channel memory without PCIe details listed. The Xeon is marked as end-of-life production status, while the i5’s status is not specified, but its release date of 2012 places it three years newer than the Xeon’s 2009 debut.

Specification Differences

The two processors differ on nearly every major specification. The Core i5-3360M has 2 cores and 4 threads, while the Xeon E5540 has 4 cores and 8 threads. Base clocks are 2.80 GHz for the i5 and 2.53 GHz for the Xeon, with boost clocks of 3.50 GHz and 2.80 GHz respectively. The i5’s higher turbo frequency is crucial to its benchmark victories.

TDP is a major differentiator: the i5 draws 35W, while the Xeon consumes 80W. Sockets are incompatible, with the i5 using Intel BGA 1023 and the Xeon using Intel Socket 1366. The i5 is a mobile part, while the Xeon targets servers and workstations. The Xeon supports ECC memory and triple-channel DDR3 with 25.6 GB/s bandwidth, while the i5 uses dual-channel memory with no listed bandwidth or ECC support. The i5 has integrated graphics; the Xeon does not. The Xeon’s launch MSRP was $774, while the i5 has no listed launch MSRP. Both are multiplier-unlocked, and neither has a listed series.

Head-to-Head Benchmarks

The head-to-head results are consistent and narrow. In Cinebench R15 multi-core, the i5-3360M scores 246 against the Xeon’s 240, a 2.5% margin. Cinebench R20 multi-core shows a similar pattern: 1029 for the i5 versus 1001 for the Xeon, a 2.8% difference. The single-core R20 test also favors the i5 at 145 versus 141, again 2.8% apart.

Cinebench R23 multi-core scores 2451 for the i5 and 2384 for the Xeon, a 2.8% delta. The largest gap appears in Cinebench R23 single-core, where the i5 scores 346 against the Xeon’s 336, a 3% win. Across all five tests, the i5’s advantage is remarkably consistent at roughly 2.5-3%, suggesting a fundamental per-clock efficiency edge rather than a workload-specific quirk.

The Xeon’s double core count and 8 MB of L3 cache are not enough to overcome the i5’s architectural advantages. The i5’s 22nm process and higher boost clock deliver better single-thread performance, and even in multi-threaded Cinebench tests, the i5’s two cores with four threads outperform the Xeon’s four cores with eight threads. This is a striking result that underscores how much IPC improved between Nehalem and Ivy Bridge. The Xeon’s 731 million transistors and larger die cannot compensate for the older design’s inefficiencies in these specific workloads.

The Geekbench results, which only exist for the i5, show 1110 multi-core and 518 single-core, reinforcing its competitive position. The Xeon lacks Geekbench data in this comparison, so no direct comparison is possible there. Both CPUs sit at the 22nd percentile of all CPUs, and their average benchmark scores of 835 and 820 place them within 1.8% of each other. The nearest rivals for the i5 include the Intel Xeon X3450 at 837 (0.2% behind) and the Intel Core i5-5200U at 838 (0.3% behind), while the Xeon’s closest competitor is the AMD PRO A10-8750B at 821 (0.1% behind). These narrow margins confirm that both processors are firmly in the same performance tier, despite their vastly different internal designs.