CPU Comparison

The Intel Xeon E-2386G and Intel Core i9-10900E are both active Intel Socket 1200 processors, but they target different segments: the Xeon is a Server/Workstation part while the Core i9 is a Desktop chip. Despite the Xeon’s lower core count, benchmark results consistently favor it across every tested workload. The data shows a clean sweep for the Xeon, though the margins are narrow.

Head-to-Head Benchmarks

The Xeon E-2386G wins all six head-to-head Cinebench comparisons, with every delta hovering near 3%. In Cinebench R23 multicore, the Xeon scores 16592 against the i9-10900E’s 16093, a 3.1% advantage. The single-core R23 result is similar: 2342 versus 2272, also a 3.1% lead. This pattern repeats in R20 multicore (6968 vs. 6759, +3.1%) and R20 single-core (983 vs. 954, +3%). The R15 tests show identical margins: 1672 vs. 1622 multicore and 235 vs. 228 single-core, both at 3.1%.

What is striking is that the Core i9-10900E has 10 cores and 20 threads, while the Xeon has only 6 cores and 12 threads. Yet the Xeon’s higher clock speeds, 3.50 GHz base and 5.10 GHz boost versus the i9’s 2.80 GHz and 4.70 GHz, compensate for the two-core deficit. The i9-10900E never wins a single benchmark in this comparison, posting a 0-6 record. The largest gap is only 3.1%, meaning these are closely matched chips in absolute terms, but the Xeon is consistently ahead in every rendering workload tested.

Looking at broader averages, the Xeon’s average benchmark score is 4799, while the i9-10900E sits at 4708. That puts the Xeon 1.9% higher overall. Both CPUs land at the 59th percentile versus all CPUs, indicating they occupy the same performance tier in the global database. The Xeon’s nearest rival is the AMD Ryzen 9 3950X with an average score of 4807, a negligible -0.2% difference. The i9-10900E’s closest competitor is the Intel Core i9-9900KS at 4738, which the i9 trails by -0.6%. Interestingly, the i9-10900E is also only 0.5% behind the Intel Core i9-11900T (4685) and 0.9% ahead of the Intel Core i9-10900F (4664).

Where Each One Wins

The Xeon E-2386G wins everywhere in the data, but the nature of its wins matters. Its advantage is consistent across both single-threaded and multi-threaded tests, which points to superior per-core efficiency. For workloads that rely on high clock speeds and responsive single-thread performance, such as lightly threaded database queries, legacy application compatibility, or interactive workstation tasks, the Xeon’s 5.10 GHz boost clock gives it a measurable edge. The Cinebench R23 single-core score of 2342 versus 2272 confirms this.

For multi-threaded rendering, the i9-10900E’s extra four cores should theoretically give it an edge, but the data contradicts that assumption. The Xeon still wins Cinebench R23 multicore by 3.1%, suggesting that the i9’s lower 2.80 GHz base clock and 4.70 GHz boost clock cannot fully utilize its additional cores effectively in these specific tests. The i9-10900E does have a larger 20 MB shared L3 cache versus the Xeon’s 12 MB, which could help in cache-sensitive workloads, but that advantage does not translate into a benchmark win here.

The i9-10900E’s only unique data point is a Geekbench result: 8162 multicore and 1575 single-core. The Xeon has no Geekbench scores in the provided data, so this is the i9’s sole exclusive validation. However, without a direct Xeon comparison, this cannot be interpreted as a win. The i9 also has a lower 65W TDP versus the Xeon’s 95W, which matters for power-constrained systems, though no thermal testing data is available.

Architecture Differences

The two chips come from different Intel architectures. The Xeon E-2386G uses Rocket Lake, specifically the Rocket Lake-E codename, built on a 14 nm process with a 276 mm² die. The Core i9-10900E uses Comet Lake, also on 14 nm, but with a smaller 206 mm² die. Both are manufactured by Intel, but the architectural differences are significant.

Core counts diverge sharply: the Xeon has 6 cores and 12 threads, while the i9-10900E has 10 cores and 20 threads. Cache layouts also differ. The Xeon provides 80 KB of L1 per core and 512 KB of L2 per core, with 12 MB of shared L3. The i9-10900E offers 64 KB of L1 per core, 256 KB of L2 per core, and a larger 20 MB shared L3. The i9’s L3 advantage is substantial, 8 MB more, but it does not overcome the Xeon’s clock speed lead.

Memory and I/O features are where the Xeon clearly targets professional workloads. The Xeon supports DDR4 with dual-channel memory and a higher memory bandwidth of 51.2 GB/s versus the i9’s 46.9 GB/s. Crucially, the Xeon supports ECC memory, while the i9-10900E does not. The Xeon also uses PCIe Gen 4 with 20 CPU lanes, whereas the i9-10900E is limited to PCIe Gen 3 with 16 lanes. The integrated graphics differ too: the Xeon has UHD Graphics P750, while the i9 includes UHD Graphics 630.

The Xeon launches with a $450 MSRP and is part of the Xeon E-2300 series, released in September 2021. The i9-10900E, from the Core 10th Gen family, launched earlier in April 2020 with a $488 MSRP. Both have locked multipliers, so neither supports overclocking. The Xeon’s part number is SRKN0, while the i9-10900E is SRJFD.

The Verdict

The data is unambiguous: the Intel Xeon E-2386G outperforms the Intel Core i9-10900E in every benchmark where both are measured. If you prioritize raw Cinebench rendering scores, the Xeon is the pick, delivering 3.1% higher multicore performance in R23 despite having four fewer cores. The Xeon’s higher clock speeds, 5.10 GHz boost versus 4.70 GHz, make it the stronger choice for single-threaded tasks as well, as shown by its 2342 R23 single-core score.

Choose the Xeon E-2386G if your workload demands ECC memory support, PCIe Gen 4 connectivity, or higher memory bandwidth (51.2 GB/s). These features are absent on the i9-10900E, which lacks ECC, uses PCIe Gen 3, and tops out at 46.9 GB/s. The Xeon is also $38 cheaper at launch, though pricing should not be the deciding factor per the data. The Xeon’s 95W TDP is higher, but no thermal performance data is available to weigh that trade-off.

Choose the Core i9-10900E if you need more cores and threads, 10 cores and 20 threads versus 6 and 12, or if your application benefits from the larger 20 MB L3 cache. The i9-10900E also has a lower 65W TDP, which may suit compact or power-sensitive builds. Its Geekbench scores (8162 multicore, 1575 single-core) provide an additional data point not available for the Xeon. However, in direct Cinebench comparisons, the i9-10900E loses every round by approximately 3%.

For most professional or workstation tasks, the Xeon E-2386G is the superior part based on benchmark results and platform features. The i9-10900E is viable only if core count and cache size matter more than the Xeon’s consistent performance lead and enterprise-grade memory support.

FAQ

Q: Which CPU has a higher boost clock?

A: The Intel Xeon E-2386G boosts to 5.10 GHz, while the Intel Core i9-10900E boosts to 4.70 GHz.

Q: Does the Core i9-10900E support ECC memory?

A: No. The i9-10900E lacks ECC support, while the Xeon E-2386G supports ECC memory.

Q: How many cores does each processor have?

A: The Xeon E-2386G has 6 cores and 12 threads. The Core i9-10900E has 10 cores and 20 threads.

Q: Which CPU has a larger L3 cache?

A: The Core i9-10900E has a 20 MB shared L3 cache, which is larger than the Xeon E-2386G’s 12 MB shared L3 cache.

Q: What is the average benchmark score difference?

A: The Xeon E-2386G averages 4799, while the Core i9-10900E averages 4708. The Xeon is approximately 1.9% higher.

Q: Which CPU supports PCIe Gen 4?

A: The Xeon E-2386G supports PCIe Gen 4 with 20 lanes. The Core i9-10900E only supports PCIe Gen 3 with 16 lanes.