CPU Comparison

The Intel Core i3-6300 and the Intel Xeon W5590 represent two very different eras of Intel silicon. The i3-6300 is a modern Skylake desktop part, while the Xeon W5590 is a Nehalem-era workstation processor. The benchmark data shows a clear, consistent winner across every single test, but the margins and the architectural context tell a more nuanced story about why one chip decisively outperforms the other.

Head-to-Head Benchmarks

The results are unambiguous: the Core i3-6300 wins all five head-to-head comparisons, with no victories for the Xeon W5590. The most striking pattern is the consistency of the margins. In Cinebench R15 multi-core, the i3-6300 scores 340 against the Xeon’s 288, a lead of 18.1%. That same percentage appears almost verbatim in the R20 multi-core test, where the i3-6300’s 1419 beats the Xeon’s 1204 by 17.9%. The R23 multi-core results follow suit, with 3380 versus 2867, another 17.9% advantage.

The single-core tests tell the same story. In Cinebench R20 single-core, the i3-6300 posts 200 versus the Xeon’s 169, an 18.3% win. The R23 single-core test shows 477 against 404, a margin of 18.1%. This uniformity across both multi-threaded and single-threaded workloads is telling. It suggests the performance gap is not a matter of core count or thread scaling, but rather a fundamental per-clock efficiency difference between the two architectures.

What makes this interesting is that the Xeon W5590 has a structural advantage on paper. It offers 4 cores and 8 threads, double the i3-6300’s 2 cores and 4 threads. Yet it still loses every multi-core test. The i3-6300’s higher base clock of 3.80 GHz (versus the Xeon’s 3.33 GHz base and 3.60 GHz boost) combined with the massive IPC gains from Skylake over Nehalem more than compensates for the core deficit. The data also shows the Xeon’s average benchmark score is 986, slightly higher than the i3-6300’s 978, but that aggregate figure is dragged down by the i3-6300’s lack of other benchmark entries. In the head-to-head Cinebench suite, the i3-6300 is the clear victor.

The Verdict

From the data, the Core i3-6300 is the better processor for essentially every benchmark scenario measured. It wins 100% of the head-to-head tests (5 out of 5) and does so by nearly identical margins of roughly 18% across the board. Anyone prioritizing Cinebench rendering performance, whether single-threaded or multi-threaded, should choose the i3-6300 without hesitation.

However, the Xeon W5590 is not without a rationale for a specific buyer. Its percentile rank against all CPUs is 27, marginally better than the i3-6300’s 26. This suggests that in a broader benchmark database, the Xeon’s aggregate performance across other tests (not shown here) is slightly more competitive. But that is a statistical artifact of the limited Cinebench data. The Xeon also has a launch MSRP of $1600, which reflects its original enterprise positioning, though pricing comparisons are not the focus here.

The i3-6300 is the pick for anyone running the exact workloads benchmarked: Cinebench R15, R20, and R23. The Xeon W5590 might be worth considering if the workload requires ECC memory support, which the i3-6300 lacks, or if the platform requires triple-channel DDR3 memory. But for raw compute performance, the i3-6300 is the superior choice.

Architecture Differences

The two chips are separated by roughly six years of architectural evolution. The Core i3-6300 uses the Skylake architecture on a 14 nm process node, manufactured by Intel with 1,400 million transistors on a 150 mm² die. The Xeon W5590 uses the older Nehalem architecture (codenamed Gainestown) on a 45 nm process, with just 731 million transistors on a larger 263 mm² die. This process shrink is the primary driver of the i3-6300’s efficiency and clock speed advantage.

The cache configurations differ significantly. Both chips have 64 KB of L1 cache per core and 256 KB of L2 cache per core. The key difference is in L3 cache: the i3-6300 has 4 MB shared, while the Xeon W5590 has 8 MB shared. The Xeon’s larger L3 cache is a legacy of its server heritage, but it does not compensate for the architectural deficit in the benchmark results.

Memory support is another major divergence. The i3-6300 supports DDR4 memory on a dual-channel bus, delivering a theoretical bandwidth of 34.1 GB/s. The Xeon W5590 supports DDR3 on a triple-channel bus, with a slightly lower theoretical bandwidth of 32.0 GB/s. The i3-6300 does not support ECC memory, while the Xeon does, a critical feature for mission-critical server workloads. The i3-6300 also features integrated graphics (Intel HD 530), whereas the Xeon has no integrated graphics at all, requiring a discrete GPU for any display output.

Other platform differences include the socket. The i3-6300 uses Intel Socket 1151, while the Xeon uses the older Intel Socket 1366. PCIe support also differs: the i3-6300 offers Gen 3 with 16 lanes (CPU only), while the Xeon offers Gen 2. The Xeon’s TDP is 130 watts, more than double the i3-6300’s 51 watts, reflecting both the older process node and the higher core count. The i3-6300 was released in 2015 and remains active in production, while the Xeon W5590 was released in 2009 and is now end-of-life.

FAQ

Q: Which processor has more cores and threads?

A: The Xeon W5590 has 4 cores and 8 threads, while the Core i3-6300 has 2 cores and 4 threads. Despite this advantage, the i3-6300 wins every multi-core benchmark.

Q: How much faster is the Core i3-6300 in multi-core Cinebench R23?

A: The i3-6300 scores 3380 versus the Xeon’s 2867, a lead of 17.9%. This is consistent with the R15 and R20 multi-core margins of 18.1% and 17.9%, respectively.

Q: Does the Xeon W5590 support ECC memory?

A: Yes, the Xeon W5590 supports ECC memory. The Core i3-6300 does not support ECC memory, which may be a deciding factor for server or workstation reliability requirements.

Q: What are the process nodes for each chip?

A: The Core i3-6300 is built on a 14 nm process, while the Xeon W5590 uses a 45 nm process. The i3-6300’s smaller node contributes to its lower 51 W TDP versus the Xeon’s 130 W TDP.

Q: Which chip has integrated graphics?

A: Only the Core i3-6300 has integrated graphics, specifically Intel HD 530. The Xeon W5590 has no integrated graphics, requiring a separate GPU.

Q: What is the launch MSRP of the Xeon W5590?

A: The Xeon W5590 has a launch MSRP of $1600. The Core i3-6300 has no listed launch MSRP in the data.

Where Each One Wins

The Core i3-6300 wins in every measured category. In single-core performance, it leads by 18.3% in Cinebench R20 and 18.1% in R23, making it the clear choice for lightly-threaded applications that rely on per-core speed. In multi-core workloads, it maintains a consistent 17.9-18.1% advantage across R15, R20, and R23, proving that its two cores with four threads outpace the Xeon’s four cores with eight threads in this specific rendering workload. The i3-6300 also wins on efficiency, with a 51 W TDP versus the Xeon’s 130 W, and on modern platform features like DDR4 support, PCIe Gen 3, and integrated graphics.

The Xeon W5590 has no benchmark wins to claim, but the data does reveal where it could be the preferred option outside of raw Cinebench performance. Its 8 MB of shared L3 cache is double the i3-6300’s 4 MB, which could benefit certain cache-sensitive workloads not represented in these tests. Its ECC memory support is a genuine feature advantage for error-correcting memory in critical systems. The triple-channel DDR3 memory bus, while offering slightly lower theoretical bandwidth (32.0 GB/s versus 34.1 GB/s), provides a different memory topology that some server platforms may require. The Xeon’s higher 27th percentile rank versus the i3-6300’s 26th also hints that in a wider benchmark suite, the Xeon’s aggregate performance is marginally stronger, though this is not reflected in the Cinebench head-to-head results. For a buyer with an existing Socket 1366 platform and a need for ECC, the Xeon remains a viable legacy option. For anyone building a modern system or prioritizing the benchmarked Cinebench workload, the Core i3-6300 is the definitive winner.