Intel Xeon E-2174G vs Intel Xeon E5-2643 v3 Comparison

FAQ

Q: Which processor has more cores and threads?

A: The Intel Xeon E5-2643 v3 offers 6 cores and 12 threads, while the Intel Xeon E-2174G has 4 cores and 8 threads.

Q: How do their boost clocks compare?

A: The E-2174G reaches a boost clock of 4.70 GHz, significantly higher than the E5-2643 v3's 3.70 GHz boost. Base clocks are 3.80 GHz for the E-2174G and 3.40 GHz for the E5-2643 v3.

Q: Which CPU has better single-core performance in Cinebench R23?

A: The E5-2643 v3 scores 1225 in Cinebench R23 single-core, beating the E-2174G's 1142. That is a 6.8% advantage for the older Haswell part.

Q: Are both CPUs end-of-life products?

A: Yes, both are marked as end-of-life in the database. The E-2174G was released in July 2018, while the E5-2643 v3 came out in September 2014.

Q: Which processor supports more memory channels?

A: The E5-2643 v3 supports quad-channel DDR4 memory with a bandwidth of 68.3 GB/s. The E-2174G is dual-channel with 42.7 GB/s bandwidth.

Q: Do both CPUs support ECC memory?

A: Yes, both the E-2174G and the E5-2643 v3 support ECC memory.

Architecture Differences

The two processors come from different Intel generations and are built on different process nodes. The E-2174G uses the Coffee Lake architecture (Coffee Lake-S WS) on a 14 nm process with a die size of 126 mm². The E5-2643 v3 is based on Haswell (Haswell-EP) on a 22 nm process with a much larger die of 356 mm² and 2,600 million transistors.

Cache layouts differ substantially. Both have 64 KB L1 and 256 KB L2 per core. However, the E5-2643 v3 carries 20 MB of shared L3 cache, while the E-2174G has only 8 MB shared L3.

The E-2174G includes integrated graphics (HD Graphics P630), while the E5-2643 v3 has none. Socket compatibility is entirely different: the E-2174G uses Intel Socket 1151, and the E5-2643 v3 uses Intel Socket 2011-3.

PCIe lane counts are another major split. The E-2174G provides 16 Gen 3 lanes from the CPU, while the E5-2643 v3 provides 40 Gen 3 lanes. Memory support also favors the E5-2643 v3 with quad-channel DDR4 and 68.3 GB/s bandwidth versus dual-channel 42.7 GB/s on the E-2174G.

TDP ratings reflect the older part's higher power envelope: 135 W for the E5-2643 v3 versus 71 W for the E-2174G.

Head-to-Head Benchmarks

The database records six direct benchmark comparisons between these two CPUs, and the E5-2643 v3 wins all six. The margins are remarkably consistent, hovering around 6.8% to 7.3%.

In Cinebench R15 multicore, the E5-2643 v3 scores 875 against 815 for the E-2174G, a 6.9% lead. In single-core R15, the E5-2643 v3 posts 123 versus 114, a 7.3% advantage. Those are the largest deltas in the set.

Cinebench R20 results show the same pattern. Multicore: E5-2643 v3 at 3646, E-2174G at 3398, a 6.8% gap. Single-core: 514 versus 479, also 6.8%.

Cinebench R23 repeats the story. Multicore: E5-2643 v3 at 8682, E-2174G at 8091, a 6.8% difference. Single-core: 1225 versus 1142, again 6.8%.

Notably, the E-2174G does have Geekbench scores in the database (5104 multicore, 1559 single-core), but no Geekbench results are recorded for the E5-2643 v3, so those cannot be compared directly.

The average benchmark score in the database places the E-2174G at 2588 and the E5-2643 v3 at 2511. That is interesting: despite losing every head-to-head test, the newer chip posts a higher average across all recorded benchmarks. That is because the E-2174G's Geekbench results (5104 and 1559) are strong, while the E5-2643 v3 has no Geekbench entries to pull its average up.

Specification Differences

| Specification | Intel Xeon E-2174G | Intel Xeon E5-2643 v3 |

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

| Cores | 4 | 6 |

| Threads | 8 | 12 |

| Base Clock | 3.80 GHz | 3.40 GHz |

| Boost Clock | 4.70 GHz | 3.70 GHz |

| TDP | 71 W | 135 W |

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

| Architecture | Coffee Lake | Haswell |

| Process Node | 14 nm | 22 nm |

| Die Size | 126 mm² | 356 mm² |

| Transistors | Not recorded | 2,600 million |

| L3 Cache | 8 MB (shared) | 20 MB (shared) |

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

| Memory Bandwidth | 42.7 GB/s | 68.3 GB/s |

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

| Integrated Graphics | HD Graphics P630 | None |

| Launch MSRP | $334 | $1552 |

Everything else in the database is identical: both are Intel parts, both support DDR4 and ECC memory, both are locked multipliers, both target server/workstation segments, and both are end-of-life.

Where Each One Wins

The E5-2643 v3 wins every recorded head-to-head benchmark. Its advantage comes from having two more cores and four more threads, plus 12 MB more L3 cache and higher memory bandwidth. In multicore workloads like Cinebench R15, R20, and R23, the extra cores translate directly into higher scores. Even in single-core tests, the older chip edges ahead, likely due to its larger cache and higher TDP headroom.

The E-2174G wins on efficiency and platform flexibility. Its 71 W TDP is nearly half of the E5-2643 v3's 135 W. It also includes integrated graphics, which the E5-2643 v3 lacks entirely. The newer 14 nm process and smaller die (126 mm² versus 356 mm²) make it a much simpler part to cool and power.

For users who need raw compute throughput in threaded workloads, the E5-2643 v3 is the clear choice. Its 6-core/12-thread configuration and quad-channel memory make it better suited for memory-intensive server tasks. The E-2174G, with its dual-channel memory and fewer cores, fits lighter workloads where single-socket simplicity and lower power matter more.

The Verdict

The data is unambiguous: the Intel Xeon E5-2643 v3 outperforms the Intel Xeon E-2174G in every direct benchmark recorded. Cinebench R15, R20, and R23 all show the E5-2643 v3 leading by roughly 6.8% to 7.3% in both single-core and multicore tests. Anyone building a workstation where those workloads matter should choose the E5-2643 v3.

However, the E-2174G is not without merit. Its average benchmark score across all recorded tests (2588) is actually higher than the E5-2643 v3's (2511), thanks to strong Geekbench results. It also draws less power, runs on a smaller platform, and includes integrated graphics. For a compact server or a workstation where power and space are limited, the E-2174G is the more practical choice.

The launch MSRP difference is stark: $334 for the E-2174G versus $1552 for the E5-2643 v3. But the E5-2643 v3 was a higher-tier part at launch, and its benchmark results justify the premium for compute-heavy use.

In short: pick the E5-2643 v3 for maximum thread performance and memory bandwidth. Pick the E-2174G for lower power, integrated graphics, and a newer platform. The benchmark data favors the older chip, but the newer chip offers better balance for many real-world builds.