CPU Comparison

The Intel Xeon E3-1231 v3 and Intel Xeon E-2314 are both quad-core server processors, but they represent vastly different eras of Intel's design philosophy. The E3-1231 v3 is a Haswell-era part from 2014, while the E-2314 is a Rocket Lake-E chip from 2021. Benchmark data shows a clear and consistent performance gap, with the newer E-2314 winning all six head-to-head comparisons. However, the older chip still holds relevance in specific legacy scenarios, and the architecture differences between the two explain much of the performance delta.

Where Each One Wins

The data paints a straightforward picture: the Intel Xeon E-2314 wins every single benchmark in the head-to-head comparison. Across Cinebench R15, R20, and R23, in both single-core and multi-core tests, the E-2314 takes the lead with a deltaPct between -9.7% and -9.8% relative to the E3-1231 v3. This means the E-2314 is roughly 10% faster across the board, a consistent margin that suggests a fundamental advantage in per-clock performance and boost capability.

The E3-1231 v3, on the other hand, wins in no benchmark category. Its sole advantage lies in thread count: it offers 8 threads versus the E-2314's 4 threads. Yet, this does not translate to a multi-core victory in the tested workloads. The data suggests that the E-2314's higher boost clock of 4.50 GHz, compared to the E3-1231 v3's 3.80 GHz, more than compensates for the halved thread count in these specific benchmarks. For workloads that are heavily parallelized and scale perfectly with thread count, the E3-1231 v3 might theoretically fare better, but the Cinebench results indicate that the E-2314's architectural efficiency overcomes this deficit. The E3-1231 v3 is a capable part for its era, but the E-2314 is the clear winner for any modern workload represented by these tests.

Architecture Differences

The two processors are separated by more than just release date; their internal designs are fundamentally different. The E3-1231 v3 is built on Intel's 22 nm process node with a die size of 160 mm² and contains 1,400 million transistors. The E-2314, conversely, uses a 14 nm process node with a larger die size of 276 mm² and has no transistor count listed in the data. This shift to a larger, more complex node is a key factor in the E-2314's higher clock speeds and improved IPC.

Cache configurations also differ. The E3-1231 v3 has 64 KB of L1 cache per core and 256 KB of L2 cache per core, while the E-2314 increases these to 80 KB and 512 KB per core, respectively. Both share 8 MB of L3 cache. The larger per-core caches on the E-2314 likely contribute to its better single-core performance, as more data can be held closer to the processing cores.

Memory support is another major divergence. The E3-1231 v3 supports DDR3 memory with a dual-channel bus and a total memory bandwidth of 25.6 GB/s. The E-2314 supports DDR4, also dual-channel, but with a significantly higher memory bandwidth of 51.2 GB/s. This doubled bandwidth is critical for memory-intensive server workloads. Additionally, the E-2314 offers PCIe Gen 4 with 20 lanes (CPU only), whereas the E3-1231 v3 is limited to PCIe Gen 3 with 16 lanes. This gives the newer chip more modern expansion capabilities and faster data transfer to peripherals. Both processors support ECC memory and lack integrated graphics, targeting the server/workstation segment. The E3-1231 v3 uses the LGA 1150 socket, while the E-2314 uses LGA 1200, making them incompatible with each other's motherboards.

Head-to-Head Benchmarks

The Cinebench results show a remarkably uniform performance gap. In Cinebench R15 multi-core, the E3-1231 v3 scores 601 while the E-2314 scores 666, a delta of -9.8%. The single-core R15 test shows a similar story: 84 for the E3-1231 v3 versus 93 for the E-2314, a -9.7% difference. This pattern holds in R20, where multi-core scores are 2506 versus 2775 (-9.7%) and single-core scores are 353 versus 391 (-9.7%).

The most recent benchmark, Cinebench R23, reinforces the trend. The E3-1231 v3 achieves a multi-core score of 5967, while the E-2314 reaches 6609, a -9.7% delta. In single-core R23, the scores are 842 and 933, respectively, a -9.8% difference. The consistency of this ~10% margin across all tests is notable. It suggests that the E-2314's advantage is not workload-specific but rather a general improvement in execution efficiency. The E3-1231 v3's extra threads (8 vs 4) do not help it close the gap in multi-core tests, indicating that the E-2314's higher boost clock and architectural improvements are more impactful than raw thread count in these rendering workloads. The data also shows the E3-1231 v3 achieving a Geekbench multi-core score of 3939 and a single-core score of 1109, though no comparable Geekbench scores are provided for the E-2314, limiting direct comparison to the Cinebench suite.

FAQ

Q: Which processor has a higher boost clock?

A: The Intel Xeon E-2314 has a boost clock of 4.50 GHz, while the Intel Xeon E3-1231 v3 has a boost clock of 3.80 GHz.

Q: Do both processors support ECC memory?

A: Yes, both the Intel Xeon E3-1231 v3 and the Intel Xeon E-2314 support ECC memory.

Q: What is the difference in memory bandwidth?

A: The E3-1231 v3 has a memory bandwidth of 25.6 GB/s with DDR3 support, while the E-2314 has a memory bandwidth of 51.2 GB/s with DDR4 support.

Q: How do the single-core Cinebench R23 scores compare?

A: The E-2314 scores 933 in Cinebench R23 single-core, which is -9.8% higher than the E3-1231 v3's score of 842.

Q: Which processor has more threads?

A: The Intel Xeon E3-1231 v3 has 8 threads, while the Intel Xeon E-2314 has 4 threads.

Q: Are these processors on the same socket?

A: No, the E3-1231 v3 uses Intel Socket 1150, while the E-2314 uses Intel Socket 1200.

The Verdict

For any new build, the Intel Xeon E-2314 is the clear choice based on benchmark data. It wins every head-to-head test by a margin of roughly 10%, offers double the memory bandwidth, and supports faster PCIe Gen 4 connectivity. Its lower TDP of 65 W, compared to the E3-1231 v3's 80 W, also makes it more power-efficient. The E-2314 is an active product, while the E3-1231 v3 is end-of-life, meaning the newer chip is a more practical and forward-looking option.

The Intel Xeon E3-1231 v3, however, is not without merit. Its 8 threads provide a theoretical advantage in heavily threaded applications that are not represented in the Cinebench suite. For someone maintaining an existing LGA 1150 system with DDR3 memory, the E3-1231 v3 remains a capable drop-in upgrade. Its 43rd percentile ranking among all CPUs is identical to the E-2314's, suggesting that despite being older, it still holds its own in the broader performance landscape. The data does not show the E3-1231 v3 winning any benchmark, but its legacy support for older platforms is its primary value proposition.

Specification Differences

| Specification | Intel Xeon E3-1231 v3 | Intel Xeon E-2314 |

|---|---|---|

| Base Clock | 3.40 GHz | 2.80 GHz |

| Boost Clock | 3.80 GHz | 4.50 GHz |

| TDP | 80 W | 65 W |

| Socket | Intel Socket 1150 | Intel Socket 1200 |

| Process Node | 22 nm | 14 nm |

| Die Size | 160 mm² | 276 mm² |

| L1 Cache | 64 KB (per core) | 80 KB (per core) |

| L2 Cache | 256 KB (per core) | 512 KB (per core) |

| Memory Support | DDR3 | DDR4 |

| Memory Bandwidth | 25.6 GB/s | 51.2 GB/s |

| PCIe | Gen 3, 16 Lanes (CPU only) | Gen 4, 20 Lanes (CPU only) |

| Production Status | End-of-life | Active |

| Release Date | 2014-05-10 | 2021-09-07 |

| Launch MSRP | $250 | $182 |