CPU Comparison

The Intel Xeon E-2126G and the Intel Xeon E-2324G are both entry-level server/workstation processors, but they represent two different eras of Intel’s Xeon E lineage. The data shows a clear split: the E-2126G, a six-core Coffee Lake part, dominates in multi-threaded and Cinebench workloads, while the E-2324G, a four-core Rocket Lake part, delivers a decisive single-core Geekbench victory. For workloads that scale with core count, the E-2126G is the statistically stronger choice, leading in seven of eight head-to-head benchmarks. Conversely, the E-2324G is the pick for lightly-threaded tasks that prioritize raw single-thread performance, where its Geekbench single-core score of 2059 is 24% ahead. Neither processor escapes the 51st percentile ranking among all CPUs, indicating both are mid-pack performers; the E-2126G has an average benchmark score of 2842, while the E-2324G sits at 2823, a negligible 0.7% difference.

The Verdict

The benchmark results indicate that the Intel Xeon E-2126G is the superior processor for multi-core throughput. It wins all three Cinebench multi-core tests (R15, R20, R23) by margins of 1.1%, and its Geekbench multi-core score of 5743 is 9.2% higher than the E-2324G’s 5257. This advantage stems directly from its core count: six physical cores versus four, which outweighs the newer architecture of the E-2324G in parallel workloads. For server tasks like virtualization, compilation, or rendering that use all available threads, the E-2126G is the data-backed winner.

The Intel Xeon E-2324G, however, owns the single-thread crown. Its Geekbench single-core score of 2059 crushes the E-2126G’s 1565, a massive 24% delta. This is the only benchmark where the E-2324G wins, but it is a significant one. In Cinebench single-core tests, the margin narrows drastically, with the E-2126G actually winning R15, R20, and R23 by 0.8%, 1.2%, and 1.0% respectively. This contradiction suggests that the E-2324G’s advantage is workload-specific, favoring Geekbench’s test methodology over Cinebench’s rendering engine. Users running single-threaded database queries or legacy applications that are sensitive to Geekbench-style integer operations may prefer the E-2324G.

Ultimately, the choice hinges on thread count versus architectural efficiency. The E-2126G offers a 50% core advantage, which translates to consistent, albeit modest, wins in rendering and multi-core synthetic tests. The E-2324G offers a lower 65W TDP compared to the 80W of the E-2126G, and a newer PCIe Gen 4 interface with 20 lanes versus Gen 3 with 16 lanes. For a system that prioritizes raw compute density per socket, the E-2126G is the safer bet. For a power-conscious server with a focus on single-threaded responsiveness and newer I/O, the E-2324G holds merit, despite its loss in the aggregate benchmark score.

Architecture Differences

The two processors are built on fundamentally different silicon designs, despite sharing the same 14 nm process node and Intel foundry. The E-2126G uses the Coffee Lake architecture (codename Coffee Lake-S WS) from the Xeon E-2100 series, while the E-2324G uses the Rocket Lake architecture (codename Rocket Lake-E) from the Xeon E-2300 series. This generational divide explains most of their behavioral differences.

The most obvious divergence is the core configuration. The E-2126G has 6 cores and 6 threads, with a base clock of 3.30 GHz and a boost clock of 4.50 GHz. The E-2324G has 4 cores and 4 threads, with a lower base clock of 3.10 GHz but a higher boost clock of 4.60 GHz. This core-count disparity is the primary driver of the multi-core benchmark results. The E-2126G also has a larger shared L3 cache at 12 MB versus the E-2324G’s 8 MB. However, the E-2324G boasts larger per-core caches: 80 KB of L1 and 512 KB of L2 per core, compared to 64 KB and 256 KB per core on the E-2126G.

Die size and memory bandwidth also differ substantially. The E-2126G has a die size of 154 mm², while the E-2324G is significantly larger at 276 mm², reflecting the more complex Rocket Lake architecture. The E-2324G also supports higher memory bandwidth at 51.2 GB/s, compared to the E-2126G’s 42.7 GB/s, both using dual-channel DDR4 with ECC support. Platform support diverges as well: the E-2126G uses Intel Socket 1151 with PCIe Gen 3 (16 lanes), while the E-2324G uses Intel Socket 1200 with PCIe Gen 4 (20 lanes). Integrated graphics differ, with the E-2126G featuring HD Graphics P630 and the E-2324G featuring UHD Graphics P750. The E-2126G is end-of-life, released in July 2018, while the E-2324G is active, released in September 2021.

Where Each One Wins

The data reveals a clear workload split based on thread utilization and test type. The E-2126G wins every multi-core benchmark, making it the definitive choice for parallel processing. Its Cinebench R23 multi-core score of 8891 is 1.1% ahead of the E-2324G’s 8797, and the margin grows to 9.2% in Geekbench multi-core (5743 vs 5257). This indicates that for applications like 3D rendering, video encoding, or scientific simulations that scale across cores, the two extra cores of the E-2126G provide a tangible, measurable benefit.

In contrast, the E-2324G wins only in Geekbench single-core, where its 2059 score represents a 24% lead over the E-2126G’s 1565. This is a massive delta that cannot be ignored. However, this victory does not translate to Cinebench single-core tests, where the E-2126G actually wins by 0.8% to 1.2%. This suggests the E-2324G’s architectural advantage is specific to certain instruction sets or memory access patterns in Geekbench, not a universal single-thread superiority. For users relying on Cinebench as their reference, the E-2126G is the safer single-thread performer; for those using Geekbench, the E-2324G is significantly faster.

The E-2324G also holds advantages outside raw compute benchmarks. Its 65W TDP is lower than the E-2126G’s 80W, offering better power efficiency per core. Its PCIe Gen 4 support with 20 lanes provides double the bandwidth and more lanes for NVMe storage or accelerators compared to the E-2126G’s PCIe Gen 3 with 16 lanes. For a server chassis with limited cooling or a focus on low power draw, the E-2324G is the more efficient platform, even if it loses in aggregate CPU throughput.

FAQ

Q: Which processor has more cores?

A: The Intel Xeon E-2126G has 6 cores and 6 threads. The Intel Xeon E-2324G has 4 cores and 4 threads.

Q: Does the newer E-2324G have a higher boost clock?

A: Yes. The E-2324G has a boost clock of 4.60 GHz, while the E-2126G boosts to 4.50 GHz. The E-2126G, however, has a higher base clock at 3.30 GHz versus 3.10 GHz.

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

A: The E-2126G wins with a score of 8891, which is 1.1% higher than the E-2324G’s 8797.

Q: Is the E-2324G faster in any benchmark?

A: Yes. The E-2324G wins the Geekbench single-core test with a score of 2059, a 24% advantage over the E-2126G’s 1565.

Q: What are the memory bandwidth specifications?

A: The E-2324G supports 51.2 GB/s of memory bandwidth, while the E-2126G supports 42.7 GB/s. Both use dual-channel DDR4 with ECC support.

Q: What is the socket difference?

A: The E-2126G uses Intel Socket 1151, while the E-2324G uses Intel Socket 1200. They are not interchangeable.

Head-to-Head Benchmarks

The head-to-head data presents a nearly one-sided contest. The E-2126G wins 7 out of 8 benchmarks, but the margins reveal a nuanced story.

In the Cinebench suite, the E-2126G’s victories are consistent but narrow. In Cinebench R15 multi-core, it scores 896 against the E-2324G’s 886, a 1.1% delta. The single-core R15 test is closer, with 126 versus 125, a 0.8% win. Moving to Cinebench R20, the multi-core score is 3734 versus 3694 (1.1% delta), and single-core is 527 versus 521 (1.2% delta). The R23 results follow the same pattern: multi-core 8891 versus 8797 (1.1% delta) and single-core 1255 versus 1242 (1.0% delta). Across all six Cinebench tests, the E-2126G maintains a lead of roughly 1%, never exceeding 1.2%. This indicates a stable, predictable advantage from the extra two cores, even in single-threaded rendering workloads.

The Geekbench results break this pattern dramatically. In Geekbench multi-core, the E-2126G scores 5743, a 9.2% victory over the E-2324G’s 5257. This is the largest win margin for the E-2126G in any test, reinforcing that its core advantage is amplified in integer-heavy parallel workloads. However, the Geekbench single-core test flips the script entirely. The E-2324G scores 2059, beating the E-2126G’s 1565 by a staggering 24%. This is the single largest delta in the entire comparison, and it is the only benchmark where the E-2324G comes out ahead.

This divergence between Cinebench single-core (where E-2126G wins) and Geekbench single-core (where E-2324G wins) highlights the importance of benchmark selection. The E-2324G’s Rocket Lake architecture, with its larger per-core caches and higher boost clock, excels in Geekbench’s specific test patterns. Yet, in Cinebench’s rendering workload, the older Coffee Lake design of the E-2126G retains a slight edge. For a buyer, this means that the “better” single-threaded CPU depends entirely on the software stack in question. In aggregate, the E-2126G’s average benchmark score of 2842 edges out the E-2324G’s 2823, but the 24% Geekbench single-core loss for the E-2126G is a critical caveat for any single-thread-sensitive deployment.