Intel Core i9-10940X vs Intel Xeon Platinum 8260 Comparison

The Intel Xeon Platinum 8260 and Intel Core i9-10940X are both built on Cascade Lake silicon, but they target very different corners of the market. The Xeon is a 24-core server/ workstation part on Socket 3647, while the i9-10940X is a 14-core desktop enthusiast chip on Socket 2066. Despite the Xeon’s higher core count and server pedigree, the benchmark data shows a remarkably close contest in raw rendering performance, with the Xeon taking a narrow but consistent lead across every recorded Cinebench test.

Head-to-Head Benchmarks

The recorded head-to-head data covers six Cinebench tests, and the Xeon Platinum 8260 wins all six. The margins are small but uniform: 2.8% in most tests. In Cinebench R15 multi-core, the Xeon scores 2436 against the i9-10940X’s 2370, a 2.8% advantage. Single-core R15 goes 343 to 334, also a 2.7% edge for the Xeon. The pattern repeats in Cinebench R20: 10152 versus 9878 multi-core and 1433 versus 1394 single-core, both 2.8% in favor of the Xeon. Cinebench R23 shows the same story, with the Xeon at 24173 against 23520 multi-core and 3412 against 3320 single-core, again 2.8% ahead.

That consistency is telling. The Xeon wins single-core tests despite having a lower boost clock (3.90 GHz versus 4.80 GHz) and a lower base clock (2.40 GHz versus 3.30 GHz). The recorded data shows the Xeon is simply delivering more work per cycle in this workload, or the i9’s higher clock is not translating into a proportional gain. The multi-core results are less surprising given the core count difference: 24 cores versus 14 gives the Xeon a structural advantage, yet it only leads by 2.8% there as well. That suggests the i9’s higher clocks are doing substantial work to close the gap in heavily threaded tests.

It is worth remembering the i9-10940X has additional benchmark entries in the database that the Xeon does not, specifically Geekbench results. The i9 scores 10464 multi-core and 1556 single-core on Geekbench. Without a matching Xeon result in the recorded data, these cannot be compared directly here, but they do establish a baseline for the i9’s performance in that test.

The average benchmark scores also tell a nuanced story. The Xeon’s average is 6992, while the i9’s average is 6605. That is about a 5.9% gap in aggregate, larger than the Cinebench head-to-head deltas because the i9’s Geekbench scores pull its average down relative to its Cinebench results. The Xeon sits at the 63rd percentile of all CPUs in the database, while the i9 sits at the 62nd. Both are firmly mid-pack performers in the overall database, which makes sense: these are capable but not top-tier parts by modern standards.

FAQ

Q: Which CPU wins in Cinebench R23 multi-core?

A: The Intel Xeon Platinum 8260 wins with a score of 24173, which is 2.8% ahead of the Intel Core i9-10940X’s 23520.

Q: Does the i9-10940X win any benchmark in the head-to-head comparison?

A: No. The recorded head-to-head data covers six Cinebench tests, and the Xeon Platinum 8260 wins all six. The i9 has Geekbench scores in the database, but there is no matching Xeon result for a direct comparison.

Q: How do the single-core scores compare?

A: The Xeon leads in all single-core tests. In Cinebench R23 single-core, it scores 3412 against 3320, a 2.8% margin. The margins in R15 and R20 single-core are 2.7% and 2.8% respectively.

Q: What is the difference in average benchmark score?

A: The Xeon Platinum 8260 has an average benchmark score of 6992, while the i9-10940X averages 6605. That is roughly a 5.9% gap in the Xeon’s favor.

Q: Are the two CPUs in the same performance percentile?

A: They are very close. The Xeon is at the 63rd percentile of all CPUs, and the i9 is at the 62nd percentile. Their nearest rivals in the database differ: the Xeon’s closest match is the Intel Core i9-7980XE with a 0.4% difference, while the i9-10940X is exactly matched by the Intel Pentium Gold G6405.

Q: Which CPU has more cores and threads?

A: The Xeon Platinum 8260 has 24 cores and 48 threads. The i9-10940X has 14 cores and 28 threads.

The Verdict

The data points to a straightforward conclusion: the Xeon Platinum 8260 is the faster CPU in every directly comparable benchmark, but the margins are slim. A 2.8% lead in multi-core and single-core Cinebench tests is real but modest. The Xeon’s advantage comes from its 24 cores and 48 threads, which should give it more headroom in heavily threaded workloads beyond the tested Cinebench suite, though the database does not record such tests for this pair.

The i9-10940X is not far behind despite having 10 fewer cores and 20 fewer threads. Its higher base and boost clocks compensate substantially in the recorded tests. For users who already have a Socket 2066 platform or who specifically want a desktop part with an unlocked multiplier, the i9’s performance is close enough that the platform choice may matter more than the raw benchmark delta. The i9 is also the only one of the two with an active production status in the database, which could influence availability considerations.

However, for pure performance per the recorded data, the Xeon Platinum 8260 is the pick. It wins every head-to-head test, has the higher average benchmark score, and sits one percentile point higher in the overall database. The only caveat is that the i9 has Geekbench scores the Xeon cannot contest, so the aggregate picture is slightly incomplete.

Specification Differences

The core and thread counts are the most obvious split: the Xeon has 24 cores and 48 threads, the i9 has 14 cores and 28 threads. Clock speeds favor the i9, with a 3.30 GHz base and 4.80 GHz boost versus the Xeon’s 2.40 GHz base and 3.90 GHz boost. Both parts share a 165 W TDP and 14 nm process node from Intel. The sockets differ entirely: the Xeon uses Intel Socket 3647, the i9 uses Intel Socket 2066.

Cache configurations also differ. Both have 64 KB of L1 per core and 1 MB of L2 per core, but the shared L3 is much larger on the Xeon at 35.75 MB versus 19.25 MB on the i9. The Xeon supports ECC memory, while the i9 does not. The i9 has a quad-channel memory bus and PCIe Gen 3 support listed; the Xeon’s memory bus and PCIe details are not recorded in the database. The i9’s multiplier is unlocked, the Xeon’s is not. The market segments reflect the intended use: Server/Workstation for the Xeon, Desktop for the i9. Release dates are about ten months apart, with the Xeon at the end of 2018 and the i9 in late 2019.

Architecture Differences

Both processors are built on Intel’s 14 nm process and share the Cascade Lake architecture family, but they are distinct variants. The Xeon Platinum 8260 is Cascade Lake-SP, designed for scalable server platforms. The i9-10940X is Cascade Lake-X, the high-end desktop variant. The transistor count is recorded for the Xeon at 8,000 million; no transistor count is listed for the i9.

The cache hierarchy is the key architectural divergence beyond the core count. Per-core L1 and L2 are identical, but the Xeon’s shared L3 is 35.75 MB, nearly double the i9’s 19.25 MB. That larger pool of shared cache likely contributes to the Xeon’s slight edge in single-core tests despite its much lower clocks. ECC support on the Xeon also signals its server pedigree, as does its Socket 3647 platform. The i9, by contrast, is a desktop part with an unlocked multiplier, a quad-channel memory bus, and no ECC support.

Where Each One Wins

The Xeon Platinum 8260 wins every recorded benchmark in the direct comparison. Its strongest case is multi-core rendering, where 24 cores and 48 threads give it a structural edge, even if the margin is only 2.8% in Cinebench R23 multi-core. The larger 35.75 MB L3 cache also helps it edge out the i9 in single-core tests, which is notable given the clock disadvantage. Users running heavily threaded workstation workloads, virtualized environments, or memory-intensive server tasks on Socket 3647 platforms will find the Xeon’s profile more appropriate, especially with ECC memory support.

The i9-10940X’s case is narrower but still valid. Its recorded Geekbench scores (10464 multi-core, 1556 single-core) show it is a capable performer in that test, though no Xeon comparison is available. Its higher clocks (3.30 GHz base, 4.80 GHz boost) and unlocked multiplier make it the more flexible choice for overclocking and for desktop users who want high single-thread responsiveness. The quad-channel memory bus and PCIe Gen 3 support are listed for the i9, and it is the only one of the two with an active production status. For a desktop enthusiast build on Socket 2066, the i9 gets the nod; for a server or workstation deployment where ECC and core count matter, the Xeon is the clear choice.