Intel Core i9-10940X vs Intel Xeon W-2191B Comparison

FAQ

Q: Which processor wins more head-to-head benchmark comparisons?

A: The Intel Xeon W-2191B wins six of the eight head-to-head benchmarks, while the Intel Core i9-10940X wins two. The Xeon takes all six Cinebench tests, while the Core i9 dominates both Geekbench tests.

Q: How much faster is the Core i9-10940X in Geekbench single-core?

A: The Core i9-10940X scores 1556 versus 1182 for the Xeon W-2191B, a 31.6% advantage. This is the largest performance gap between the two processors in any benchmark.

Q: What is the margin of victory for the Xeon in Cinebench tests?

A: The Xeon W-2191B leads by 1.5% in Cinebench R15 multi-core (2407 vs 2370), R15 single-core (339 vs 334), R20 multi-core (10032 vs 9878), R23 multi-core (23887 vs 23520), and R23 single-core (3372 vs 3320). The R20 single-core margin is 1.6% (1416 vs 1394).

Q: How do the two chips compare in Geekbench multi-core?

A: The Core i9-10940X scores 10464 versus 9614 for the Xeon W-2191B, giving the Core i9 an 8.8% lead. This reverses the Cinebench trend where the Xeon holds a narrow edge.

Q: Do both processors share the same socket and memory architecture?

A: Yes. Both use Intel Socket 2066, support DDR4 memory, and feature quad-channel memory buses. However, the Xeon W-2191B has a rated memory bandwidth of 85.3 GB/s and supports ECC memory, while the Core i9-10940X does not list ECC support.

Q: What is the core and thread difference between the two?

A: The Xeon W-2191B has 18 cores and 36 threads, while the Core i9-10940X has 14 cores and 28 threads. Despite having fewer cores, the Core i9 posts higher Geekbench scores.

The Verdict

The benchmark data presents a split decision. The Intel Xeon W-2191B wins the Cinebench suite outright, taking all six tests with margins of 1.5–1.6%. That consistency across rendering workloads makes it the stronger choice for multi-threaded content creation that scales with core count. Its 18 cores and 36 threads outnumber the Core i9's 14 cores and 28 threads, and the extra silicon delivers measurable, if modest, gains.

The Intel Core i9-10940X, however, wins decisively in Geekbench. Its single-core score of 1556 beats the Xeon's 1182 by 31.6%, and its multi-core score of 10464 beats 9614 by 8.8%. For applications that favor higher clock speeds and newer architecture, the Core i9 is clearly ahead. Its 3.30 GHz base and 4.80 GHz boost clocks outpace the Xeon's 2.30 GHz base and 4.30 GHz boost.

For workstation buyers prioritizing sustained rendering performance, the Xeon W-2191B is the data-backed pick. It also brings ECC memory support and a larger 24.75 MB L3 cache. For users running a mix of single-threaded and multi-threaded workloads, the Core i9-10940X offers better overall responsiveness, as indicated by its Geekbench dominance. The Xeon is end-of-life production status, while the Core i9 remains active. The Core i9 also has an unlocked multiplier, whereas the Xeon does not. Both chips sit at the 62nd percentile among all CPUs, and their average benchmark scores are close: 6605 for the Core i9 versus 6531 for the Xeon.

Head-to-Head Benchmarks

The Xeon W-2191B establishes an early pattern in Cinebench R15 multi-core, scoring 2407 versus 2370 for the Core i9-10940X. That 1.5% margin repeats in R15 single-core, where the Xeon posts 339 against 334. The consistency is striking — the Xeon wins every Cinebench iteration by nearly the same percentage.

Cinebench R20 multi-core sees the Xeon at 10032, ahead of the Core i9's 9878, again by 1.5%. In R20 single-core, the gap widens slightly to 1.6%, with the Xeon scoring 1416 versus 1394. Cinebench R23 continues the trend: multi-core 23887 versus 23520, single-core 3372 versus 3320, both at 1.5% margins.

Then the picture flips. Geekbench multi-core hands the Core i9-10940X an 8.8% win, 10464 against 9614. The single-core Geekbench result is even more lopsided: 1556 versus 1182, a 31.6% advantage for the Core i9. That is the largest delta in the entire comparison and suggests the Core i9's newer Cascade Lake architecture and higher clock speeds translate into substantially better per-thread performance in certain workloads.

The pattern is clear: the Xeon's extra four cores and 36 threads give it a slight edge in Cinebench's rendering tests, which scale well with core count. The Core i9's architectural advantages show up in Geekbench, where clock speed and IPC matter more. A 31.6% single-core lead is not a marginal difference — it represents a generational leap in efficiency for single-threaded tasks.

Specification Differences

The core counts diverge significantly: the Xeon W-2191B packs 18 cores and 36 threads, while the Core i9-10940X has 14 cores and 28 threads. Clock speeds also favor the Core i9, with a 3.30 GHz base and 4.80 GHz boost versus the Xeon's 2.30 GHz base and 4.30 GHz boost. The Xeon compensates with a larger 24.75 MB shared L3 cache, compared to 19.25 MB on the Core i9. L1 and L2 caches are identical at 64 KB per core and 1 MB per core, respectively.

The Xeon W-2191B includes ECC memory support, a feature absent from the Core i9-10940X. The Xeon also lists a memory bandwidth of 85.3 GB/s, while the Core i9 does not specify a figure. Both support DDR4 over quad-channel memory buses. The Xeon provides 48 PCIe Gen 3 lanes (CPU only), whereas the Core i9's PCIe lane count is not listed in the data.

Power and market positioning differ as well. The Core i9-10940X has a 165 W TDP, higher than the Xeon's 140 W. The Core i9 targets the desktop segment and has an unlocked multiplier, while the Xeon is aimed at server/workstation use with a locked multiplier. The Xeon carries part number SR3RW; the Core i9's part number is not listed. Production status also separates them: the Core i9 is active, while the Xeon is end-of-life. Release dates show the Xeon launched in December 2017, nearly two years before the Core i9's October 2019 debut.

Architecture Differences

The Core i9-10940X uses Cascade Lake architecture, specifically Cascade Lake-X, while the Xeon W-2191B is built on Skylake, specifically Skylake-W. Both are fabricated on Intel's 14 nm process at Intel's own foundry. The Xeon's die size is listed at 484 mm²; the Core i9's die size is not provided.

The architectural generation gap explains much of the performance divergence. Cascade Lake is a newer microarchitecture than Skylake, bringing improvements in instruction handling and clock efficiency. The Core i9's higher boost clock of 4.80 GHz versus 4.30 GHz on the Xeon directly contributes to its 31.6% Geekbench single-core advantage. The Xeon's Skylake-W design, while older, scales to 18 cores with a larger L3 cache, which helps it edge ahead in Cinebench's multi-threaded rendering tests.

Both processors share the same Intel Socket 2066 platform and offer quad-channel DDR4 memory support. Neither includes integrated graphics. The Xeon's ECC memory support and 48 PCIe Gen 3 lanes reflect its workstation pedigree, while the Core i9's unlocked multiplier and desktop market segment indicate a consumer enthusiast focus. The Core i9's 165 W TDP exceeds the Xeon's 140 W, a trade-off for higher clock speeds. The Xeon's end-of-life status and 2017 release date contrast with the Core i9's active production and 2019 launch, positioning the Core i9 as the more modern choice for new builds — though the data shows the older Xeon still holds its own in rendering workloads.