Intel Xeon E-2126G vs Intel Xeon E-2278GEL Comparison

# Where Each One Wins

The Intel Xeon E-2278GEL is the clear winner across every recorded benchmark in this comparison. It takes all six head-to-head tests, with the Intel Xeon E-2126G failing to secure a single win. The margin is consistent, ranging from 14.8% to 15.1% depending on the workload, which indicates a structural advantage rather than a test-specific quirk.

The E-2278GEL wins decisively in multi-core workloads. In Cinebench R23 multi-core, it scores 10220 against 8891 for the E-2126G, a 14.9% advantage. The same pattern appears in Cinebench R20 multi-core, where the E-2278GEL posts 4292 versus 3734, and in Cinebench R15 multi-core, where it reaches 1030 compared to 896. These are not marginal differences; they represent a consistent lead that holds across every version of the Cinebench suite.

Single-core performance also favors the E-2278GEL, though the story is slightly different. The E-2278GEL records 1442 in Cinebench R23 single-core, 605 in R20 single-core, and 145 in R15 single-core. The E-2126G counters with 1255, 527, and 126 respectively. The single-core deltas are nearly identical to the multi-core ones, at 14.8% to 15.1%. This is notable because the E-2126G has a higher base clock (3.30 GHz versus 2.00 GHz) and a higher boost clock (4.50 GHz versus 3.90 GHz), yet it still trails in every single-threaded test.

The E-2126G does have one area where the recorded data shows a different kind of advantage: it has additional benchmark entries. The database includes Geekbench results for the E-2126G (5743 multi-core, 1565 single-core), while no Geekbench scores are recorded for the E-2278GEL. This absence of data should not be read as a performance statement, but it does mean the E-2278GEL has no recorded Geekbench win to add to its tally.

In terms of overall benchmark averages, the E-2278GEL sits at 2956, which places it in the 52nd percentile of all CPUs in the database. The E-2126G averages 2842, landing in the 51st percentile. The difference in average score is 114 points, a relatively small gap when viewed against the wider CPU landscape, but the head-to-head Cinebench results show a much larger relative gap.

The verdict on where each one wins is straightforward: the E-2278GEL wins everywhere in the recorded data. The E-2126G, meanwhile, has no benchmark victory to claim. Its only distinguishing feature in this comparison is the presence of Geekbench entries, which the E-2278GEL lacks.

The Verdict

The data points to a clear choice for most buyers: the Intel Xeon E-2278GEL outperforms the Intel Xeon E-2126G in every recorded benchmark, and it does so with a significantly lower thermal design power. The E-2278GEL is rated at 35 watts TDP, while the E-2126G is rated at 80 watts. That is a substantial efficiency advantage, and it comes alongside superior performance in all six Cinebench tests.

For users who prioritize multi-threaded throughput, the E-2278GEL is the obvious pick. It delivers 14.9% more performance in Cinebench R23 multi-core, 14.9% more in R20 multi-core, and 15% more in R15 multi-core. These gains stem from its 8 cores and 16 threads, versus the 6 cores and 6 threads of the E-2126G. The E-2278GEL also has a larger shared L3 cache (16 MB versus 12 MB), which likely contributes to its sustained advantage.

Users who focus on single-core responsiveness will also find the E-2278GEL preferable. Despite the E-2126G's higher base and boost clocks, the E-2278GEL wins single-core tests by 14.8% to 15.1%. This suggests that the E-2278GEL's architecture and cache configuration provide a more efficient execution path per clock, or that the boost behavior in the recorded tests favored the E-2278GEL.

The E-2126G does have a place in the market, but the data cannot justify recommending it over the E-2278GEL on performance grounds. Its only advantages are a lower launch MSRP (the E-2126G launched at $255, while the E-2278GEL launched at $519) and an earlier release date. Neither of these factors appears in the benchmark scores. If the E-2126G is chosen, it would be for reasons outside the recorded performance data, such as availability or specific system requirements.

The database percentile rankings reinforce this verdict. The E-2278GEL sits at the 52nd percentile of all CPUs, slightly above the E-2126G at the 51st percentile. While both are near the middle of the overall distribution, the E-2278GEL's higher average score (2956 versus 2842) and its sweep of the head-to-head tests make it the stronger option.

In short, the E-2278GEL is the superior processor in every measured dimension. The E-2126G should be considered only when its lower launch price or older release timeline matters more than raw performance, which the benchmark data does not support.

Head-to-Head Benchmarks

The head-to-head results are one-sided. The E-2278GEL wins all six recorded comparisons, with margins that cluster tightly between 14.8% and 15.1%. This consistency suggests a fixed performance gap rather than workload-dependent variation.

The largest relative win for the E-2278GEL comes in Cinebench R15 single-core, where it scores 145 against 126, a 15.1% advantage. The smallest margin is in Cinebench R20 single-core, at 14.8% (605 versus 527). Multi-core tests sit in between: R15 multi-core shows a 15% gap (1030 versus 896), while R20 and R23 multi-core both show 14.9% (4292 versus 3734, and 10220 versus 8891 respectively).

The fact that single-core and multi-core margins are nearly identical is telling. It means the E-2278GEL's advantage is not purely a core-count effect. If the E-2278GEL only won because of its two extra cores, the single-core tests would show a much smaller gap, possibly near parity. Instead, the E-2278GEL wins single-core tests by roughly the same percentage as multi-core tests. This points to a per-thread efficiency advantage, likely related to its larger L3 cache (16 MB versus 12 MB) or other microarchitectural differences.

In absolute terms, the largest raw score difference is in Cinebench R23 multi-core, where the E-2278GEL leads by 1329 points (10220 versus 8891). The smallest raw difference is in Cinebench R15 single-core, where the lead is 19 points (145 versus 126). Across all six tests, the E-2278GEL accumulates a total of 6 wins, while the E-2126G has none.

The E-2126G's best relative showing is in R20 single-core, where it trails by only 14.8%. Its worst relative showing is in R15 single-core, where it trails by 15.1%. There is no test where the E-2126G comes close to flipping the result.

One additional data point: the E-2126G has Geekbench scores recorded (5743 multi-core, 1565 single-core), but the E-2278GEL has no Geekbench entries in the database. This omission means no head-to-head comparison can be made for that suite. The recorded Cinebench results, however, provide a complete and consistent picture: the E-2278GEL holds a uniform advantage.

FAQ

Q: Which CPU wins in multi-core workloads?

A: The Intel Xeon E-2278GEL wins all three multi-core tests. It scores 1030 in Cinebench R15 multi-core versus 896, 4292 in R20 multi-core versus 3734, and 10220 in R23 multi-core versus 8891. The margins are 15%, 14.9%, and 14.9% respectively.

Q: Does the higher clock speed of the E-2126G help it win single-core tests?

A: No. The E-2126G has a base clock of 3.30 GHz and a boost clock of 4.50 GHz, both higher than the E-2278GEL's 2.00 GHz base and 3.90 GHz boost. Yet the E-2278GEL wins all single-core tests: 145 versus 126 in R15, 605 versus 527 in R20, and 1442 versus 1255 in R23.

Q: What is the difference in core and thread counts?

A: The E-2278GEL has 8 cores and 16 threads. The E-2126G has 6 cores and 6 threads, meaning it lacks Hyper-Threading entirely.

Q: How do their thermal design power ratings compare?

A: The E-2278GEL is rated at 35 watts TDP, while the E-2126G is rated at 80 watts. The E-2278GEL delivers higher performance while consuming less than half the thermal envelope.

Q: Are there any benchmarks where the E-2126G wins?

A: In the recorded head-to-head data, the E-2126G wins zero tests. The E-2278GEL wins all six. The E-2126G does have Geekbench scores in the database (5743 multi-core, 1565 single-core), but the E-2278GEL has no Geekbench entries, so no comparison is possible there.

Q: How do the two CPUs compare in overall percentile ranking?

A: The E-2278GEL sits at the 52nd percentile of all CPUs in the database, with an average benchmark score of 2956. The E-2126G sits at the 51st percentile, with an average score of 2842.

Architecture Differences

Both processors belong to Intel's Xeon E family, but they come from different series. The E-2278GEL is part of the Xeon E-2200 series, while the E-2126G is from the Xeon E-2100 series. Both use the Coffee Lake architecture and the Coffee Lake-S WS codename, and both are built on Intel's 14 nm process node.

The die sizes differ. The E-2278GEL has a die size of 180 mm², while the E-2126G is smaller at 154 mm². This size difference aligns with the core count difference: the E-2278GEL packs 8 cores into a larger die, while the E-2126G fits 6 cores into a smaller one.

Cache configuration is a notable architectural split. Both CPUs have 64 KB of L1 cache per core and 256 KB of L2 cache per core. The shared L3 cache, however, differs: the E-2278GEL has 16 MB, while the E-2126G has 12 MB. This 4 MB difference in L3 could explain some of the per-thread performance gap observed in single-core tests.

Both CPUs support DDR4 memory in a dual-channel configuration, with a memory bandwidth of 42.7 GB/s. Both support ECC memory, which is expected for server and workstation segments. Both also provide PCIe Gen 3 with 16 lanes from the CPU.

The integrated graphics differ in naming. The E-2278GEL includes UHD Graphics P630, while the E-2126G includes HD Graphics P630. Both are Intel integrated graphics solutions suitable for basic display output, but the UHD branding on the E-2278GEL suggests a slightly more capable media engine.

Neither CPU has an unlocked multiplier. Both are locked parts, which is typical for Xeon processors aimed at stable, reliable workstation operation. Both are also marked as end-of-life in production status, though the E-2278GEL was released later (June 2019) than the E-2126G (July 2018).

Specification Differences

The following specifications differ between the two CPUs:

• Cores: The E-2278GEL has 8 cores; the E-2126G has 6.
• Threads: The E-2278GEL has 16 threads; the E-2126G has 6.
• Base clock: The E-2278GEL runs at 2.00 GHz; the E-2126G runs at 3.30 GHz.
• Boost clock: The E-2278GEL boosts to 3.90 GHz; the E-2126G boosts to 4.50 GHz.
• TDP: The E-2278GEL is rated at 35 watts; the E-2126G is rated at 80 watts.
• Die size: The E-2278GEL measures 180 mm²; the E-2126G measures 154 mm².
• L3 cache: The E-2278GEL has 16 MB shared; the E-2126G has 12 MB shared.
• Integrated graphics: The E-2278GEL uses UHD Graphics P630; the E-2126G uses HD Graphics P630.
• Release date: The E-2278GEL launched on 2019-06-10; the E-2126G launched on 2018-07-11.
• Launch MSRP: The E-2278GEL launched at $519; the E-2126G launched at $255.
• Part number: The E-2278GEL is SRGE2; the E-2126G is SR3WU.

Specifications that are identical between the two include the socket (Intel Socket 1151), architecture (Coffee Lake), process node (14 nm), L1 cache (64 KB per core), L2 cache (256 KB per core), memory support (DDR4), memory bus (dual-channel), memory bandwidth (42.7 GB/s), ECC support (true), PCIe configuration (Gen 3, 16 lanes CPU only), market segment (server/workstation), production status (end-of-life), and multiplier lock (false, meaning locked).