CPU Comparison

The Intel Xeon E5-4640 v3 and the Intel Xeon E-2144G are both end-of-life server/workstation processors, but they solve very different problems. The E5-4640 v3 is a 12-core Haswell-EP part built for multi-threaded throughput in large sockets, while the E-2144G is a 4-core Coffee Lake part focused on high clock speeds and single-thread responsiveness. Benchmark data shows the older, larger chip winning every single head-to-head test, but the margin of victory and the platform context tell a more nuanced story than a simple sweep.

Where Each One Wins

The E5-4640 v3 wins everywhere in the measured benchmarks, but the nature of those wins is what matters. Its largest advantages come in multi-core workloads, where its 12 cores and 24 threads provide a substantial parallel processing edge. In Cinebench R23 multi-core, it scores 8816 versus 7910 for the E-2144G, an 11.5% lead. This advantage persists across all multi-core tests, including Cinebench R15 (888 vs 797) and R20 (3702 vs 3322), with consistent margins around 11.4%.

The E-2144G does not win any of the six head-to-head tests. However, its design philosophy points to where it would excel in unmeasured scenarios: its base clock of 3.60 GHz and boost of 4.50 GHz are dramatically higher than the E5-4640 v3's 1900 MHz base and 2.60 GHz boost. For lightly-threaded, latency-sensitive tasks like database queries or single-threaded application logic, the E-2144G's raw clock speed would likely translate into better responsiveness, even though the Cinebench single-core scores favor the E5-4640 v3 (125 vs 112 in R15, an 11.6% lead). The E-2144G also includes integrated HD Graphics P630, which the E5-4640 v3 lacks entirely, making it the only option for systems needing a basic display output without a discrete GPU.

Architecture Differences

These processors come from different architectural generations and manufacturing nodes. The E5-4640 v3 uses the Haswell-EP architecture on a 22 nm process, built on a 356 mm² die with 2,600 million transistors. The E-2144G uses the Coffee Lake architecture on a 14 nm process, with a much smaller 126 mm² die. This generational gap explains the clock speed difference: the newer 14 nm process allows the E-2144G to reach 4.50 GHz boost, while the older 22 nm process limits the E5-4640 v3 to 2.60 GHz.

Cache configurations differ significantly. Both allocate 64 KB of L1 and 256 KB of L2 per core, but the E5-4640 v3 has 30 MB of shared L3 cache versus 8 MB on the E-2144G. The E5-4640 v3's larger cache is typical for a 12-core part, helping to feed all those cores with data. Memory support also diverges: the E5-4640 v3 uses quad-channel DDR4 with 59.7 GB/s bandwidth, while the E-2144G uses dual-channel DDR4 with 42.7 GB/s. Both support ECC memory, which is critical for server reliability.

The platform sockets are incompatible: the E5-4640 v3 uses Intel Socket 2011-3, while the E-2144G uses Intel Socket 1151. PCIe lane counts also differ, with the E5-4640 v3 offering 40 Gen 3 lanes (CPU only) versus 16 lanes on the E-2144G. The E5-4640 v3 is the older part, released in 2015, while the E-2144G came in 2018. Neither has an unlocked multiplier, and both are end-of-life.

Head-to-Head Benchmarks

The Cinebench results show a consistent pattern: the E5-4640 v3 beats the E-2144G by roughly 11.5% in every single test. In Cinebench R15 multi-core, the score is 888 vs 797, an 11.4% difference. The single-core R15 test shows 125 vs 112, an 11.6% margin. This pattern repeats in R20: 3702 vs 3322 multi-core (11.4%) and 522 vs 468 single-core (11.5%). In R23, the multi-core score is 8816 vs 7910 (11.5%) and single-core is 1244 vs 1116 (11.5%).

What's notable is that the E5-4640 v3 wins single-core tests despite having a base clock of 1900 MHz and boost of 2.60 GHz, compared to the E-2144G's 3.60 GHz base and 4.50 GHz boost. This suggests the older Haswell architecture has better instructions-per-clock efficiency in the Cinebench workload, or that the E-2144G is thermally constrained in sustained single-thread boosts. The E-2144G does have a Geekbench result (4875 multi-core, 1508 single-core) that the E5-4640 v3 lacks, but no comparable data exists for the older chip in that test.

The average benchmark scores tell a similar story: the E5-4640 v3 averages 2550, while the E-2144G averages 2514. Both sit at the 49th percentile of all CPUs, meaning neither is exceptionally fast by modern standards. The E5-4640 v3's nearest rivals include the Xeon E5-1650 v3 (deltaPct 0.2%), Ryzen 7 4800HS (deltaPct -0.3%), and Core i3-10325 (deltaPct 0.8%). The E-2144G's rivals include the Xeon E5-2643 v3 (deltaPct 0.1%), Xeon E5-2630 v3 (deltaPct 0.3%), and Xeon E-2244G (deltaPct -0.5%). These rival deltas are small, indicating both chips are solidly mid-pack performers in their respective categories.

The Verdict

The data is unambiguous: the E5-4640 v3 outperforms the E-2144G in every measured benchmark, with a consistent 11.5% advantage across all Cinebench tests. For multi-threaded server workloads like virtualization, rendering, or large-scale data processing, the 12-core E5-4640 v3 is the clear choice. Its quad-channel memory (59.7 GB/s) and 30 MB L3 cache also make it better suited for memory-bandwidth-hungry applications. The 40 PCIe Gen 3 lanes provide more expansion headroom for GPUs, NVMe drives, or network cards.

However, the E-2144G is not without merit. Its 4.50 GHz boost clock and dual-channel memory make it a more responsive processor for single-threaded tasks, even though the Cinebench numbers don't reflect this advantage. It has a much lower 71 W TDP versus 105 W for the E5-4640 v3, which means lower cooling requirements and potentially lower operating costs. The integrated HD Graphics P630 eliminates the need for a separate GPU in headless or basic-display servers. For someone building a compact single-socket workstation on Socket 1151 with modest power delivery, the E-2144G is a practical choice.

The E5-4640 v3's launch MSRP is $2859, while the E-2144G's is $272, a massive difference that reflects their different market positions. The E5-4640 v3 was a high-end multi-socket server part, while the E-2144G is a value-oriented single-socket Xeon. Given the E5-4640 v3's consistent benchmark wins, it is the better performer, but the E-2144G wins on efficiency, lower platform cost, and integrated graphics. Choose the E5-4640 v3 if you need maximum core count and memory bandwidth; choose the E-2144G if you want a low-power, high-clock chip for a lighter workload.

FAQ

Q: Which CPU is faster in multi-core workloads?

A: The Intel Xeon E5-4640 v3 wins all multi-core Cinebench tests. In R23 multi-core, it scores 8816 versus 7910 for the E-2144G, an 11.5% advantage. Its 12 cores and 24 threads provide the parallel processing edge.

Q: Does the E-2144G win any benchmark?

A: No. In the six head-to-head Cinebench tests, the E5-4640 v3 wins all of them. The E-2144G does have Geekbench scores (4875 multi-core, 1508 single-core) that were not measured for the E5-4640 v3, but no direct comparison exists for that test.

Q: What are the clock speed differences?

A: The E-2144G has a base clock of 3.60 GHz and boost of 4.50 GHz, while the E5-4640 v3 has a base clock of 1900 MHz and a boost of 2.60 GHz. The E-2144G's clocks are significantly higher, but it still loses in Cinebench single-core tests.

Q: Which CPU supports more memory bandwidth?

A: The E5-4640 v3 uses quad-channel DDR4 with 59.7 GB/s bandwidth. The E-2144G uses dual-channel DDR4 with 42.7 GB/s. Both support ECC memory.

Q: Do these CPUs have integrated graphics?

A: Only the E-2144G has integrated graphics (HD Graphics P630). The E5-4640 v3 has no integrated GPU, so it requires a discrete graphics card for any display output.

Q: Are these CPUs on the same socket?

A: No. The E5-4640 v3 uses Intel Socket 2011-3, while the E-2144G uses Intel Socket 1151. They are not interchangeable in the same motherboard.

Specification Differences

| Specification | Intel Xeon E5-4640 v3 | Intel Xeon E-2144G |

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

| Cores | 12 | 4 |

| Threads | 24 | 8 |

| Base Clock | 1900.00 MHz | 3.60 GHz |

| Boost Clock | 2.60 GHz | 4.50 GHz |

| TDP | 105 W | 71 W |

| Socket | Intel Socket 2011-3 | Intel Socket 1151 |

| Architecture | Haswell | Coffee Lake |

| Process Node | 22 nm | 14 nm |

| Die Size | 356 mm² | 126 mm² |

| L3 Cache | 30 MB (shared) | 8 MB (shared) |

| Memory Bus | Quad-channel | Dual-channel |

| Memory Bandwidth | 59.7 GB/s | 42.7 GB/s |

| PCIe | Gen 3, 40 Lanes (CPU only) | Gen 3, 16 Lanes (CPU only) |

| Integrated Graphics | None | HD Graphics P630 |

| Release Date | 2015-05-31 | 2018-07-11 |

| Launch MSRP | $2859 | $272 |

| Part Number | SR22L | SR3WM |