Intel Xeon E-2334 vs Intel Xeon E5-1660 v3 Comparison

Intel Xeon E5-1660 v3 vs Intel Xeon E-2334: a comparison between an eight-core Haswell-era server processor from 2014 and a four-core Rocket Lake-E workstation chip from 2021. The recorded data shows a remarkably consistent result across every benchmark: the older, larger E5-1660 v3 wins all six head-to-head tests, though by a narrow margin that rarely exceeds 3.4%. Despite a seven-year gap in release dates and a significant difference in core count, the E-2334's higher clock speeds keep it competitive, but not victorious, in every measured workload.

Head-to-Head Benchmarks

The benchmark database records six Cinebench comparisons, and the E5-1660 v3 takes all of them. The largest margin appears in the Cinebench R15 single-core test, where the E5-1660 v3 scores 151 against the E-2334's 146, a 3.4% advantage. The R15 multi-core test shows a 3.2% lead (1074 vs 1041). The remaining four tests, Cinebench R20 and R23 in both multi-core and single-core, all show a 3.1% or 3.2% delta in favor of the E5-1660 v3. Specifically, R20 multi-core is 4475 vs 4339, R20 single-core is 631 vs 612, R23 multi-core is 10656 vs 10333, and R23 single-core is 1504 vs 1458.

These numbers paint a picture of consistency rather than dominance. The E5-1660 v3's advantage is uniform, hovering around 3% across all tests regardless of whether the workload is heavily threaded or purely single-threaded. This suggests the difference is not about core count scaling (which would show a larger multi-core gap) but rather about a fundamental per-thread efficiency edge. The E-2334, despite its newer architecture and higher boost clock, cannot overcome this deficit. Its best single-core result, 1458 in R23, still trails the E5-1660 v3's 1504 by 3.2%.

The average benchmark scores further contextualize the gap. The E5-1660 v3 holds an average score of 3082 across all recorded benchmarks, while the E-2334 averages 2988. This 94-point difference translates to a 3.1% gap. The E5-1660 v3's nearest rival, the Intel Core i7-6850K, scores 3079, a negligible 0.1% difference. The E-2334's closest competitor, the AMD Ryzen 5 PRO 5675U, matches it exactly at 2988 (0.0% delta). Both processors sit at the 52nd percentile of all CPUs in the database, meaning they are statistically equivalent in overall standing.

Architecture Differences

The two chips come from different eras and design philosophies. The E5-1660 v3 uses the Haswell-EP architecture on a 22 nm process, with 2,600 million transistors on a 356 mm² die. It is built for Intel Socket 2011-3 and belongs to the Xeon E5 (Haswell-EP) generation. Its core layout is eight physical cores with sixteen threads, running at a 3.00 GHz base clock and a 3.50 GHz boost clock. The cache hierarchy is substantial: 64 KB of L1 per core, 256 KB of L2 per core, and a 20 MB shared L3 pool. It supports quad-channel DDR4 memory with a theoretical bandwidth of 68.3 GB/s, and it offers 40 PCIe Gen 3 lanes from the CPU. The processor is unlocked (multiplierUnlocked is true), a feature typically associated with overclocking, and it is marked as end-of-life.

The E-2334 belongs to the Xeon E-2300 series, built on the Rocket Lake-E architecture using a 14 nm process. Its die measures 276 mm², notably smaller than the E5-1660 v3's 356 mm². It fits Intel Socket 1200 and is part of the Xeon E (Rocket Lake-E) generation. It has four cores and eight threads, with a 3.40 GHz base clock and a 4.80 GHz boost clock. The boost clock is significantly higher than the E5-1660 v3's 3.50 GHz, yet it does not translate into benchmark victories. Its cache is smaller: 80 KB of L1 per core, 512 KB of L2 per core, and 8 MB of shared L3. Memory support is dual-channel DDR4 with a 51.2 GB/s bandwidth, lower than the E5-1660 v3's quad-channel setup. The E-2334 provides 20 PCIe Gen 4 lanes, which is half the lane count but a newer standard. It has a 65 W TDP versus the E5-1660 v3's 140 W, reflecting the efficiency gains of newer silicon. The E-2334 is marked as active production, has a locked multiplier, and carries a launch MSRP of $250.

The transistor count for the E-2334 is not recorded in the database, so a direct density comparison is impossible. However, the process node difference (22 nm vs 14 nm) and the TDP difference (140 W vs 65 W) indicate that the E-2334 is a much more power-efficient design. The E5-1660 v3 compensates with more cores, more L3 cache, and a wider memory bus.

Where Each One Wins

Based on the recorded benchmarks, the E5-1660 v3 wins every test, so the "where each one wins" section is one-sided in the data. However, the margins are small enough that the E-2334's advantages show up in other metrics. The E5-1660 v3 is the clear choice for any workload that leverages its eight cores and sixteen threads, especially given its 20 MB shared L3 cache and quad-channel memory bandwidth. The 3.1% to 3.2% lead in multi-core tests, such as Cinebench R23 at 10656 vs 10333, confirms this. It also wins single-core tests, but by a similar margin, meaning it is not merely a core-count advantage.

The E-2334, despite losing all six benchmarks, offers a compelling alternative in specific scenarios. Its 4.80 GHz boost clock is the highest recorded in this comparison, and its 65 W TDP makes it suitable for compact, power-constrained systems. The dual-channel memory bus and 20 PCIe Gen 4 lanes are sufficient for many workstation tasks, and the smaller die size suggests lower manufacturing complexity. The E-2334 is also an active product, while the E5-1660 v3 is end-of-life, which matters for availability and long-term support. The E-2334's launch MSRP of $250 provides a reference point, though pricing comparisons are outside the scope of this analysis.

In practical terms, the E5-1660 v3 is better for multi-threaded rendering or simulation workloads that can use all sixteen threads. The E-2334 is a more modern platform with a higher single-thread boost clock, which could benefit lightly-threaded applications, but the benchmark data does not support that claim: the E5-1660 v3 wins single-core tests too. The E-2334's advantage lies in platform modernity, lower power draw, and PCIe Gen 4 support, not in measured performance.

FAQ

Q: Which processor wins the Cinebench R23 multi-core test?

A: The Intel Xeon E5-1660 v3 wins with a score of 10656, compared to the E-2334's 10333, a 3.1% advantage.

Q: What is the single-core performance difference in Cinebench R15?

A: The E5-1660 v3 scores 151, while the E-2334 scores 146, giving the E5-1660 v3 a 3.4% lead in this test.

Q: How do the two processors compare in terms of core and thread counts?

A: The E5-1660 v3 has eight cores and sixteen threads, while the E-2334 has four cores and eight threads.

Q: What are the boost clock speeds for each CPU?

A: The E5-1660 v3 has a 3.50 GHz boost clock, and the E-2334 has a 4.80 GHz boost clock.

Q: Which processor has a higher average benchmark score?

A: The E5-1660 v3 averages 3082, while the E-2334 averages 2988, a difference of 94 points.

Q: Does the E-2334 win any head-to-head benchmark?

A: No, the E5-1660 v3 wins all six recorded benchmarks, with zero wins for the E-2334.

The Verdict

The data is unambiguous: the Intel Xeon E5-1660 v3 outperforms the Intel Xeon E-2334 in every recorded benchmark, with a consistent margin of 3.1% to 3.4%. This is surprising given the E-2334's newer architecture, higher boost clock (4.80 GHz vs 3.50 GHz), and lower TDP. The E5-1660 v3's advantages are its eight cores (vs four), 20 MB L3 cache (vs 8 MB), and quad-channel memory (vs dual-channel). These factors combine to produce a small but uniform performance lead across both multi-core and single-core workloads.

The E-2334 is not without merit. It is an active product, runs at a much lower 65 W TDP, supports PCIe Gen 4, and has a higher base clock (3.40 GHz vs 3.00 GHz). Its launch MSRP of $250 is recorded in the database. For systems where power efficiency, platform longevity, or PCIe Gen 4 connectivity are priorities, the E-2334 is a rational choice despite its benchmark deficit. However, for raw computing performance as measured by Cinebench, the E5-1660 v3 is the winner.

The 52nd percentile ranking for both CPUs in the overall database confirms they are mid-pack performers. The E5-1660 v3's nearest rival, the Core i7-6850K, is within 0.1% of its average score, while the E-2334 sits exactly level with the Ryzen 5 PRO 5675U. Choosing between these two Xeon processors should be based on platform requirements and workload characteristics, not on the benchmark scores alone, since the performance gap is narrow. The E5-1660 v3 is the better performer in every tested metric, but the E-2334 offers a more modern, efficient platform that may be preferable for new builds.