Intel Xeon E-2336 vs Intel Xeon E-2378 Comparison

The Intel Xeon E-2378 and Intel Xeon E-2336 are both 65 W server and workstation processors built on the Rocket Lake-E architecture for the Intel Socket 1200 platform. They share the same 14 nm process node, dual-channel DDR4 memory support, and Gen 4 PCIe connectivity with 20 CPU lanes. The recorded benchmark data, however, shows a clear and consistent performance hierarchy between the two, with the E-2378 winning every single head-to-head test in the database. This analysis examines where each processor excels, what the scores imply for different workloads, and the architectural choices that separate them.

Where Each One Wins

The benchmark results in the database paint a straightforward picture: the Intel Xeon E-2378 wins in every recorded test. Out of six head-to-head comparisons, the E-2378 takes all six, while the E-2336 records zero wins. This is not a case of one chip dominating in multi-threaded tasks while the other takes single-threaded honors. The E-2378 leads in both categories across all three Cinebench versions (R15, R20, and R23).

The E-2378's advantage is most pronounced in single-core workloads. In Cinebench R15 single-core, it scores 208 against the E-2336's 195, a delta of 6.7%. This is the largest percentage gap between the two processors in any test. The pattern repeats in Cinebench R20 single-core, where the E-2378 scores 867 versus 816, a 6.3% lead, and in Cinebench R23 single-core, where it scores 2065 against 1945, a 6.2% advantage.

Multi-core performance tells a similar story, though the margins are slightly tighter. The E-2378 leads by 6.2% in Cinebench R15 multicore (1474 vs 1388), by 6.2% in Cinebench R20 multicore (6145 vs 5786), and by 6.2% in Cinebench R23 multicore (14633 vs 13777). The consistency of these deltas suggests a fundamental throughput advantage for the E-2378 rather than a workload-specific quirk.

For users prioritizing raw single-thread responsiveness, the E-2378 is the clear choice. For those who need maximum multi-threaded rendering or simulation throughput, the E-2378 again comes out ahead. The E-2336, while competitive in its own right, does not win any category in the recorded data. Its role is that of a lower-core-count alternative within the same family, not a performance leader.

The Verdict

The data directs a simple verdict: the Intel Xeon E-2378 is the superior processor in every measured dimension. Its 8 cores and 16 threads outpace the E-2336's 6 cores and 12 threads in all six Cinebench tests, with deltas ranging from 6.2% to 6.7%. The E-2378 also carries a larger shared L3 cache, 16 MB versus 12 MB, which likely contributes to its consistent edge.

Who should pick the E-2378? Anyone whose workload is represented by Cinebench, which includes 3D rendering, content creation, and general multi-threaded compute. The data shows it is faster in both single-core and multi-core scenarios, so there is no trade-off in choosing it over the E-2336. The E-2378's launch MSRP is $362, and it delivers a measurable performance premium across the board.

Who should pick the E-2336? The benchmark results do not identify a scenario where the E-2336 wins. Its launch MSRP is $284, which is lower, but the performance data shows it trailing in every test. For a workload that is lightly threaded and does not scale with core count, the E-2336's 6 cores may be sufficient, but the E-2378 still posts higher single-core scores. The E-2336 is a viable entry point into the Xeon E-2300 series, but the recorded measurements indicate the E-2378 is the stronger choice for performance-sensitive applications.

Head-to-Head Benchmarks

The head-to-head results in the database are remarkably uniform. In Cinebench R15 multicore, the E-2378 scores 1474 against the E-2336's 1388, a 6.2% lead. The single-core test in the same version shows a 6.7% gap, with scores of 208 and 195 respectively. This is the largest delta in the entire comparison, suggesting the E-2378's higher core count and larger cache also benefit lightly threaded performance.

Moving to Cinebench R20, the multicore test shows the E-2378 at 6145 versus 5786 for the E-2336, again a 6.2% difference. The single-core test shows 867 against 816, a 6.3% gap. The pattern holds in Cinebench R23, where the E-2378 scores 14633 in multicore against 13777, a 6.2% lead, and 2065 in single-core against 1945, a 6.2% lead.

The consistency of these numbers is notable. Across six tests, the E-2378's advantage never dips below 6.2% and never rises above 6.7%. This suggests a structural difference between the two chips, likely the additional 2 cores and 4 threads, plus the 4 MB of extra L3 cache, rather than a clock speed advantage. Both processors share the same 4.80 GHz boost clock, so the E-2378's wins come from having more physical resources to draw upon.

The average benchmark score in the database reinforces this. The E-2378 has an average score of 4232, while the E-2336 sits at 3985. The E-2378's nearest rivals include the Intel Core i7-1265U at 4248 (a 0.4% deficit) and the Intel Core i5-12500T at 4216 (a 0.4% advantage). The E-2336, by contrast, sits near the AMD Ryzen 5 PRO 4650G at 3977 and the AMD Ryzen 7 PRO 5875U at 3971, both within 0.4%. This places the E-2378 in a slightly higher performance tier than the E-2336, even though both share the same 57th percentile ranking among all CPUs.

FAQ

Q: Which processor has more cores?

A: The Intel Xeon E-2378 has 8 cores and 16 threads, while the Intel Xeon E-2336 has 6 cores and 12 threads.

Q: Do both processors have the same boost clock?

A: Yes, both the E-2378 and the E-2336 have a boost clock of 4.80 GHz. The E-2336 has a higher base clock at 2.90 GHz compared to the E-2378's 2.60 GHz.

Q: How much L3 cache does each processor have?

A: The E-2378 has 16 MB of shared L3 cache, while the E-2336 has 12 MB of shared L3 cache. Both have 80 KB of L1 cache per core and 512 KB of L2 cache per core.

Q: What is the largest performance difference between the two?

A: The largest delta is in Cinebench R15 single-core, where the E-2378 leads by 6.7% with a score of 208 versus 195.

Q: Do both processors support ECC memory?

A: Yes, both the E-2378 and the E-2336 support ECC memory and use dual-channel DDR4 with a memory bandwidth of 51.2 GB/s.

Q: Are both processors on the same socket?

A: Yes, both use the Intel Socket 1200 and are part of the Xeon E-2300 series with the Rocket Lake-E architecture.

Architecture Differences

Both processors share the same fundamental architecture: Rocket Lake-E, built on a 14 nm process at Intel, with a die size of 276 mm². They are both part of the Xeon E-2300 series and use the Intel Socket 1200. The integrated graphics are not specified for either chip, and both are unlocked for overclocking, meaning the multiplier is not locked.

The key architectural difference lies in the core and cache configuration. The E-2378 has 8 cores and 16 threads, while the E-2336 has 6 cores and 12 threads. This two-core, four-thread difference is the primary driver of the multi-core performance gap. The L3 cache also differs: the E-2378 has 16 MB shared, while the E-2336 has 12 MB shared. This 4 MB difference likely contributes to the E-2378's single-core advantage, as a larger cache can hold more working data for each core.

Both chips have identical per-core L1 and L2 caches: 80 KB and 512 KB respectively. The memory subsystem is also identical, with dual-channel DDR4 support and 51.2 GB/s of bandwidth. PCIe connectivity is the same as well, with Gen 4 and 20 lanes from the CPU. The base clock differs slightly, with the E-2336 running at 2.90 GHz versus the E-2378's 2.60 GHz, but the boost clock is the same at 4.80 GHz. This means the E-2336 starts from a higher idle frequency, but the E-2378's additional cores and cache allow it to sustain higher performance under load.

Specification Differences

The recorded specifications show several differences between the two processors. The core count is the most obvious: 8 cores and 16 threads for the E-2378 versus 6 cores and 12 threads for the E-2336. The base clock also differs, with the E-2336 at 2.90 GHz and the E-2378 at 2.60 GHz. The boost clock is identical at 4.80 GHz.

The L3 cache is another point of divergence: 16 MB shared on the E-2378 versus 12 MB shared on the E-2336. The L1 and L2 caches are the same at 80 KB and 512 KB per core respectively. The launch MSRP differs as well, with the E-2378 at $362 and the E-2336 at $284. The part numbers are distinct, SRKN4 for the E-2378 and SRKN5 for the E-2336.

All other specifications are shared. Both have a TDP of 65 W, use the Intel Socket 1200, and are built on the Rocket Lake-E architecture with a 14 nm process. Both support dual-channel DDR4 memory with ECC and have a memory bandwidth of 51.2 GB/s. PCIe connectivity is Gen 4 with 20 lanes for both. The release date is the same, September 7, 2021, and both are marked as Active in production status. The market segment for both is Server and Workstation, and neither has integrated graphics listed.