Intel Core i3-8350K vs Intel Xeon W-2123 Comparison

The Verdict

The benchmark data is unambiguous: the Intel Xeon W-2123 wins every single head-to-head test against the Intel Core i3-8350K, taking all six comparisons. The Xeon posts a consistent advantage of roughly 18% across both single-threaded and multi-threaded workloads, making it the stronger processor in every measured scenario. The Core i3-8350K, however, is not without merit — it is a fully unlocked part (multiplierUnlocked: true) aimed at desktop users, while the Xeon is a locked workstation/server chip. From the data alone, the Xeon W-2123 is the pick for anyone who prioritizes raw compute performance in Cinebench workloads, especially those needing extra threads (8 vs 4) and quad-channel memory bandwidth. The i3-8350K makes sense only for users who value its unlocked multiplier and integrated UHD Graphics 630, since the Xeon has no integrated graphics at all. Given the Xeon’s 18% lead in every benchmark and its larger memory bus, the verdict leans heavily toward the Xeon for productivity-focused builds, while the i3 remains a niche choice for overclocking enthusiasts who also need a GPU-less fallback.

Architecture Differences

The two processors come from different Intel families, though both are built on the same 14 nm process node. The Core i3-8350K uses the Coffee Lake architecture, while the Xeon W-2123 uses Skylake-W, a workstation variant of Skylake. Both feature 4 physical cores, but the Xeon doubles the thread count with Hyper-Threading, offering 8 threads versus the i3’s 4. Clock speeds favor the i3 on paper — a base clock of 4.00 GHz compared to the Xeon’s 3.60 GHz — but the Xeon adds a boost clock of 3.90 GHz, while the i3 has no listed boost clock. The Xeon also has a significantly larger die size at 484 mm² versus 126 mm², which aligns with its more complex platform features.

Cache configurations differ notably. The i3-8350K has 64 KB of L1 and 256 KB of L2 per core, with 8 MB of shared L3. The Xeon W-2123 matches the L1 at 64 KB per core but quadruples the L2 to 1 MB per core, and its L3 is slightly larger at 8.25 MB shared. Memory support is a major differentiator: both support DDR4 and ECC memory, but the i3 uses a dual-channel memory bus with 38.4 GB/s bandwidth, while the Xeon uses a quad-channel bus delivering 85.3 GB/s — more than double the bandwidth. PCIe lane counts also diverge sharply, with the Xeon offering 48 Gen 3 lanes (CPU only) versus 16 on the i3. The Xeon has no integrated graphics, while the i3 includes UHD Graphics 630. Socket compatibility is different as well: the i3 uses Intel Socket 1151, and the Xeon uses Intel Socket 2066. Both parts are end-of-life, with the i3 releasing in October 2017 and the Xeon slightly earlier in August 2017.

Head-to-Head Benchmarks

The Xeon W-2123 dominates every Cinebench test in the head-to-head comparison, with a consistent margin of roughly 18% across all six benchmarks. Starting with Cinebench R15, the Xeon scores 724 in multi-core versus the i3’s 593, a delta of -18.1% from the i3’s perspective. The single-core R15 result is similar: Xeon 102 versus i3 83, a -18.6% gap. This pattern holds in Cinebench R20, where the Xeon’s multi-core score is 3019 against 2471 (-18.2%), and single-core is 425 versus 348 (-18.1%). Cinebench R23 shows the same story: multi-core 7189 for the Xeon versus 5884 for the i3 (-18.2%), and single-core 1014 versus 830 (-18.1%).

The Xeon’s advantage is not just consistent in percentage terms but also in absolute points, with the largest raw gap appearing in the R23 multi-core test, where the Xeon leads by 1305 points. Notably, the i3-8350K also has Geekbench results — 4992 multi-core and 1564 single-core — but these are not part of the head-to-head data, so no direct comparison can be made there. The overall benchmark picture is one of uniform superiority for the Xeon, which wins all six head-to-head tests and claims a 6-0 record in the wins tally. The i3’s only potential advantage comes from its unlocked multiplier, which allows overclocking, but the stock-frequency data shows no scenario where the i3 outperforms the Xeon.

FAQ

Q: Which processor has more threads?

A: The Intel Xeon W-2123 has 8 threads, while the Intel Core i3-8350K has only 4 threads, despite both having 4 cores.

Q: Does the Xeon W-2123 have integrated graphics?

A: No, the Xeon W-2123 has no integrated graphics. The Core i3-8350K, by contrast, includes Intel UHD Graphics 630.

Q: What is the memory bandwidth difference between the two?

A: The Xeon W-2123 offers 85.3 GB/s of memory bandwidth via a quad-channel bus, while the i3-8350K provides 38.4 GB/s over a dual-channel bus — a difference of roughly 2.2 times in favor of the Xeon.

Q: Which CPU has a higher base clock?

A: The Core i3-8350K has a higher base clock at 4.00 GHz, compared to the Xeon W-2123’s 3.60 GHz. However, the Xeon adds a boost clock of 3.90 GHz, while the i3 has no listed boost clock.

Q: Are both processors end-of-life?

A: Yes, both the Intel Core i3-8350K and the Intel Xeon W-2123 are listed as end-of-life products.

Q: How does the Xeon perform relative to the i3 in Cinebench R23 multi-core?

A: The Xeon W-2123 scores 7189 in Cinebench R23 multi-core, which is 18.2% higher than the i3-8350K’s score of 5884.

Where Each One Wins

The Intel Xeon W-2123 is the clear winner in all measured benchmarks, so its advantages are straightforward to enumerate. It wins every Cinebench test — R15, R20, and R23, both single-core and multi-core — with a consistent 18% lead over the i3-8350K. This makes it the better choice for any workload that relies on Cinebench-style rendering or compute tasks, particularly those that can utilize its 8 threads versus the i3’s 4. The Xeon also offers a quad-channel memory bus with 85.3 GB/s of bandwidth, which is more than double the i3’s 38.4 GB/s, a significant benefit for memory-intensive workstation applications. Its 48 PCIe Gen 3 lanes (CPU only) dwarf the i3’s 16 lanes, enabling more expansion cards, NVMe drives, or GPUs in a workstation context. Additionally, the Xeon supports ECC memory, as does the i3, but the Xeon’s larger L2 cache (1 MB per core versus 256 KB) and slightly larger L3 (8.25 MB versus 8 MB) provide minor architectural advantages.

The Core i3-8350K, despite losing all head-to-head tests, still has clear use cases based on its feature set. Its unlocked multiplier allows overclocking, which the Xeon does not offer (multiplierUnlocked: false). For users who push clocks beyond stock, the i3 could potentially close the 18% gap in single-threaded performance, though the data only reflects stock speeds. The i3 also includes integrated UHD Graphics 630, making it a viable option for systems without a discrete GPU, whereas the Xeon requires a separate graphics card. The i3’s lower launch MSRP of $168 (versus the Xeon’s $294) also positions it as a more accessible desktop part, though pricing is not a performance metric. For gaming or general desktop use where the iGPU is sufficient and overclocking is desired, the i3-8350K holds appeal. But for pure compute performance as measured by Cinebench, the Xeon W-2123 is the definitive choice, winning all six head-to-head comparisons with a consistent 18% margin and offering superior memory bandwidth and PCIe connectivity.