Intel Core i3-N300 vs Intel Xeon D-1518 Comparison

The Intel Core i3-N300 and the Intel Xeon D-1518 represent two fundamentally different design philosophies from the same manufacturer. The data shows a clear split: the Core i3-N300 delivers superior performance in older Cinebench versions and dominates on a per-watt basis, while the Xeon D-1518 takes the lead in the most demanding modern workload. The Core i3-N300 wins four of the six head-to-head benchmarks, but the Xeon D-1518 wins the two that matter most for sustained professional rendering: Cinebench R23 multi-core and single-core.

FAQ

Q: Which processor has more cores?

A: The Intel Core i3-N300 has 8 cores, while the Intel Xeon D-1518 has 4 cores. Both processors support 8 threads.

Q: What is the performance difference in Cinebench R23 multi-core?

A: The Intel Xeon D-1518 scores 3877, which is 34.3% higher than the Intel Core i3-N300's score of 2546. This is the largest single benchmark gap in either direction.

Q: Which processor supports ECC memory?

A: The Intel Xeon D-1518 supports ECC memory. The Intel Core i3-N300 does not list ECC memory support in the database.

Q: How do the single-core scores compare?

A: In Cinebench R23 single-core, the Intel Xeon D-1518 scores 547, beating the Intel Core i3-N300's 513 by 6.2%. However, in Cinebench R20 single-core, the Core i3-N300 wins with 401 against 229, a 75.1% advantage.

Q: What are the TDP ratings for these processors?

A: The Intel Core i3-N300 has a TDP of 7 watts, while the Intel Xeon D-1518 has a TDP of 35 watts.

Q: Which processor has a higher average benchmark score?

A: The Intel Core i3-N300 has an average benchmark score of 1135, while the Intel Xeon D-1518 has an average of 1121. The Core i3-N300 sits 0.1% above the Intel Core i5-3570T, a direct rival.

The Verdict

The data supports a clear choice based on workload. For general-purpose computing, lightweight multitasking, and older software, the Intel Core i3-N300 is the stronger option. It wins four of the six recorded benchmarks, including massive margins in Cinebench R20 multi-core (75% ahead) and Cinebench R15 single-core (57.4% ahead). Its 8-core Gracemont architecture produces an average benchmark score of 1135, which places it 0.1% above the Intel Core i5-2550K and 0.3% above the AMD Athlon Silver PRO 3125GE.

For sustained professional rendering, video encoding, and server-type workloads, the Intel Xeon D-1518 is the better pick. It wins Cinebench R23 multi-core by 34.3% and Cinebench R23 single-core by 6.2%. These are the most modern and demanding tests in the database, and the Xeon's Broadwell architecture with higher per-core cache (1.5 MB per core) shows its strength under prolonged load. The Xeon D-1518 also supports ECC memory and has a dual-channel memory bus, features absent from the Core i3-N300.

The verdict is not about which is "better" overall, but which fits the intended use case. The Core i3-N300 is for efficiency and responsiveness in light tasks. The Xeon D-1518 is for reliability and sustained multi-threaded performance in professional environments. The 7-watt TDP of the Core i3-N300 versus the 35-watt TDP of the Xeon D-1518 reinforces this split: the former is designed for mobile efficiency, the latter for workstation endurance.

Head-to-Head Benchmarks

The largest win for the Intel Core i3-N300 comes in Cinebench R20 multi-core, where it scores 2849 against the Xeon D-1518's 1628. That is a 75% advantage, driven by the Core i3-N300's 8 cores and higher boost clock of 3.70 GHz. The same pattern appears in Cinebench R20 single-core, with the Core i3-N300 scoring 401 versus 229, a 75.1% lead. These results indicate that the Gracemont architecture handles the older R20 test with remarkable efficiency.

In Cinebench R15, the Core i3-N300 continues its dominance. The multi-core score is 416 versus 390, a 6.7% win, and the single-core score is 85 versus 54, a 57.4% win. The single-core gap is notable because it suggests the Core i3-N300's 100 MHz base clock is misleading; its boost clock of 3.70 GHz provides a massive frequency advantage in short bursts.

The Intel Xeon D-1518 reverses the trend in Cinebench R23. The multi-core score of 3877 beats the Core i3-N300's 2546 by 34.3%. This is a dramatic shift from R20, indicating that the Xeon's architecture scales better with the newer, more demanding R23 workload. The single-core R23 result also favors the Xeon, with 547 versus 513, a 6.2% lead. The Xeon's base clock of 2.20 GHz, while lower than the Core i3-N300's boost, appears more stable under sustained load.

The overall record is 4 wins for the Core i3-N300 and 2 wins for the Xeon D-1518. However, the Xeon's two wins are in the most recent benchmark version, which carries more weight for modern application performance. The data suggests that the Core i3-N300 is optimized for short-duration tasks, while the Xeon D-1518 excels in prolonged, heavy workloads.

Specification Differences

The two processors differ across nearly every major specification. The Intel Core i3-N300 has 8 cores and 8 threads, while the Intel Xeon D-1518 has 4 cores and 8 threads. The Core i3-N300 has a base clock of 100 MHz and a boost clock of 3.70 GHz, whereas the Xeon D-1518 has a base clock of 2.20 GHz and no boost clock listed in the database.

The TDP difference is substantial: 7 watts for the Core i3-N300 versus 35 watts for the Xeon D-1518. The Core i3-N300 uses the Intel BGA 1264 socket and the Gracemont architecture, while the Xeon D-1518 uses the Intel BGA 1667 socket and the Broadwell architecture. The process nodes also differ: 10 nm for the Core i3-N300 and 14 nm for the Xeon D-1518.

Memory support varies significantly. The Core i3-N300 supports DDR4 and DDR5 with a single-channel memory bus and a bandwidth of 38.4 GB/s. The Xeon D-1518 supports DDR3 and DDR4 with a dual-channel memory bus and no bandwidth figure recorded. ECC memory is supported only on the Xeon D-1518.

PCIe lanes differ as well: the Core i3-N300 has Gen 3 with 9 lanes, while the Xeon D-1518 has Gen 3 with 24 lanes. The Core i3-N300 includes integrated UHD Graphics 770, while the Xeon D-1518 has no integrated graphics. The market segments reflect this: the Core i3-N300 is classified as Mobile, and the Xeon D-1518 is Server/Workstation.

The Xeon D-1518 has a transistor count of 3,200 million and a die size of 246 mm², while the Core i3-N300 has no recorded transistor or die size data. The release dates are far apart: the Core i3-N300 launched in 2023, and the Xeon D-1518 launched in 2015. Both are listed as Active in production.

Architecture Differences

The Intel Core i3-N300 is built on the Gracemont architecture, a design focused on efficiency and parallel throughput. Its 8 cores are arranged in modules with 2 MB of L2 cache per module, and it has 6 MB of shared L3 cache. The L1 cache is 96 KB per core. The 10 nm process node allows for a very low TDP of 7 watts, which is a key architectural achievement.

The Intel Xeon D-1518 uses the Broadwell architecture, a more traditional design optimized for sustained server workloads. It has 4 physical cores with 8 threads via Hyper-Threading. The cache hierarchy is different: 64 KB L1 per core, 256 KB L2 per core, and 1.5 MB L3 per core. The 14 nm process node and 35-watt TDP reflect a less efficient but more robust design, with a transistor count of 3,200 million on a 246 mm² die.

The architectural differences explain the benchmark results. The Gracemont architecture's high core count and low power envelope give it an advantage in short, bursty tasks like Cinebench R15 and R20. The Broadwell architecture's larger per-core cache and stable clock behavior under load give it the edge in the extended R23 test. The Xeon's ECC memory support and dual-channel bus also make it architecturally suited for data integrity and memory bandwidth in server scenarios.

The lack of a boost clock on the Xeon D-1518 is a critical architectural distinction. It means the Xeon operates at a fixed 2.20 GHz, providing predictable performance but capping single-thread speed. The Core i3-N300, with a 3.70 GHz boost, can surge ahead in single-core tests, as seen in the R15 and R20 results. However, under sustained multi-core load, the Core i3-N300's advantage fades, and the Xeon's steady state takes over.

Where Each One Wins

The Intel Core i3-N300 wins in scenarios that demand quick responsiveness and low power consumption. Its 7-watt TDP makes it ideal for passive-cooled mobile devices, thin laptops, and fanless systems. The 8 cores handle multitasking and light parallel workloads with ease, as shown by the 75% lead in Cinebench R20 multi-core. Single-core tasks like web browsing, document editing, and legacy application compatibility are also strong suits, given the 57.4% advantage in Cinebench R15 single-core.

The Intel Xeon D-1518 wins in professional environments where reliability and sustained performance are non-negotiable. Its 35-watt TDP and server-grade features, including ECC memory and 24 PCIe Gen 3 lanes, make it suitable for small-scale servers, network appliances, and storage systems. The 34.3% lead in Cinebench R23 multi-core indicates that modern rendering and encoding workloads run significantly faster on the Xeon. The 6.2% single-core R23 win also suggests better performance in current-generation software that relies on a single heavy thread.

The use-case split is stark. For a mobile workstation or an ultra-efficient desktop, the Core i3-N300 is the data-backed choice. For a rack-mount server or a workstation that runs continuous batch jobs, the Xeon D-1518 is the superior option. The Xeon's dual-channel memory bus and ECC support provide a reliability layer the Core i3-N300 cannot match, while the Core i3-N300's single-channel memory and integrated graphics target a completely different market segment.

In summary, the Core i3-N300 wins the efficiency and responsiveness battles, while the Xeon D-1518 wins the endurance and modern workload war. The database records show that neither processor is a universal winner, but each excels precisely where its architecture and feature set are designed to perform.