Intel Core i5-5675R vs Intel Xeon E5-2623 v3 Comparison

The benchmark data is unambiguous: the Intel Xeon E5-2623 v3 outperforms the Intel Core i5-5675R in every single head-to-head test, posting a clean 6-0 sweep. The Xeon’s wins are consistent and decisive, with margins hovering around 15-16% across all Cinebench workloads. While the i5-5675R is the newer part based on a smaller process node, the Xeon’s additional threads and larger cache pool translate directly into superior raw compute performance in every measured scenario.

Head-to-Head Benchmarks

The most striking pattern in the data is the uniformity of the Xeon E5-2623 v3’s advantage. In Cinebench R15 multicore, the Xeon scores 568 against the i5-5675R’s 476, a delta of -16.2% from the i5’s perspective. That 92-point gap represents a substantial lead that carries through every other test. The single-core R15 result tells a similar story: the Xeon posts 79 versus 67 for the i5, a 15.2% deficit for the Core part.

Moving to Cinebench R20, the margins stay remarkably stable. The multicore test shows the Xeon at 2367 and the i5 at 1987, a 16.1% difference. Single-core R20 sees the Xeon at 333 against the i5’s 280, a 15.9% gap. These consistent deltas suggest the performance difference is structural rather than workload-specific — the Xeon’s advantage holds whether the test scales across cores or runs on a single thread.

The newest Cinebench R23 results reinforce the pattern with near-identical margins. Multicore R23 gives the Xeon 5637 versus the i5’s 4733, a 16% difference. Single-core R23 shows 795 for the Xeon and 668 for the i5, again a 16% gap. Across all six benchmarks, the Xeon’s lead never drops below 15.2% and never exceeds 16.2%, indicating a remarkably consistent performance ceiling advantage.

Notably, the i5-5675R does not win a single benchmark in this comparison. Its average benchmark score of 1648 places it in the 40th percentile of all CPUs, while the Xeon’s 1630 average score sits at the 39th percentile. Despite the Xeon winning every head-to-head, their overall percentile rankings are nearly identical — a reminder that both parts occupy similar tiers in the broader CPU landscape, even if the Xeon is clearly superior within this pairing.

Where Each One Wins

The Xeon E5-2623 v3 wins everywhere in this comparison. There is no benchmark category where the i5-5675R takes the lead. The Xeon’s 8 threads versus the i5’s 4 threads likely explain its multicore dominance, but the single-core results are more telling. Even in single-threaded workloads, where thread count is irrelevant, the Xeon holds a 15-16% advantage across all three Cinebench versions.

For users prioritizing raw compute throughput, the Xeon is the clear choice. Its Cinebench R23 multicore score of 5637 stands 904 points above the i5’s 4733, a gap that will translate into meaningfully faster rendering and compilation times. The Xeon also offers ECC memory support and quad-channel DDR4 with 59.7 GB/s bandwidth, features that matter in server and workstation environments where data integrity and memory throughput are critical.

The i5-5675R’s only advantages lie outside the benchmark suite. It integrates Iris Pro Graphics 6200, enabling visual output without a discrete GPU. It also carries a lower 65W TDP versus the Xeon’s 105W, making it more suitable for compact or power-constrained builds. However, in pure processing performance — the metric these benchmarks measure — the i5 has no territory it can claim against the Xeon.

Architecture Differences

The two processors come from different Intel generations and process nodes. The i5-5675R uses Broadwell architecture on a 14 nm process with a 182 mm² die size. The Xeon E5-2623 v3 is built on the older Haswell-EP architecture using a 22 nm process, with a substantially larger 356 mm² die and 2,600 million transistors. Despite being on an older node, the Xeon’s larger die allows for more on-chip resources.

Cache configurations differ significantly. Both share 64 KB L1 and 256 KB L2 per core, but the L3 cache tells a different story. The i5-5675R has 4 MB of shared L3, while the Xeon E5-2623 v3 offers 10 MB of shared L3 — a 6 MB advantage that becomes critical in memory-intensive workloads. This larger cache likely contributes to the Xeon’s consistent single-core lead, as more data can be held closer to the execution cores.

Core and thread counts diverge as well. The i5-5675R provides 4 cores and 4 threads with no hyper-threading, while the Xeon E5-2623 v3 provides 4 cores but 8 threads through hyper-threading. This doubles the Xeon’s logical thread count, providing better utilization of execution resources in multithreaded applications. Base and boost clocks slightly favor the i5 at 3.10 GHz and 3.60 GHz versus the Xeon’s 3.00 GHz and 3.50 GHz, but the Xeon’s architectural advantages overcome this clock deficit.

Platform support marks another major divide. The i5-5675R uses Intel BGA 1364 with dual-channel DDR3 memory support at 29.9 GB/s. The Xeon E5-2623 v3 uses Intel Socket 2011-3 with quad-channel DDR4 at 59.7 GB/s — exactly double the memory bandwidth. PCIe connectivity also favors the Xeon with 40 lanes versus the i5’s 16 lanes, both Gen 3. The Xeon supports ECC memory while the i5 does not, and the Xeon has no integrated graphics while the i5 includes Iris Pro Graphics 6200.

The Verdict

The data supports one conclusion: choose the Intel Xeon E5-2623 v3 for any workload where CPU compute performance matters. It wins all six benchmark comparisons with margins between 15.2% and 16.2%, regardless of single-core or multicore testing. The Xeon’s 8 threads, 10 MB L3 cache, and double memory bandwidth provide structural advantages that the i5-5675R cannot overcome despite its smaller process node and higher clock speeds.

The i5-5675R remains viable only in specific scenarios the benchmarks do not cover. Its integrated Iris Pro Graphics 6200 makes it a complete package for a basic desktop without a discrete GPU. Its 65W TDP allows for simpler cooling and lower power draw than the Xeon’s 105W. But in every Cinebench test, the Xeon is faster — and in most cases, approximately 16% faster.

The Xeon’s launch MSRP was $444, while the i5-5675R launched at $265. The price difference reflects the Xeon’s server-grade feature set: ECC memory, quad-channel bandwidth, 40 PCIe lanes, and a larger cache. For users building a workstation or server where those features matter, the Xeon’s price premium is justified by its benchmark superiority and platform capabilities.

FAQ

Q: Which processor is faster in single-core performance?

A: The Intel Xeon E5-2623 v3 is faster in every single-core test. In Cinebench R23 single-core, it scores 795 versus the i5-5675R’s 668, a 16% advantage. The same pattern holds in R15 (79 vs 67) and R20 (333 vs 280).

Q: Does the i5-5675R win any benchmark in this comparison?

A: No. The Xeon E5-2623 v3 wins all six head-to-head benchmarks. The i5-5675R records zero wins, while the Xeon takes all six.

Q: How do their overall CPU percentile rankings compare?

A: The i5-5675R ranks in the 40th percentile of all CPUs with an average benchmark score of 1648. The Xeon E5-2623 v3 ranks in the 39th percentile with an average score of 1630, making them nearly equivalent in overall standing despite the Xeon’s head-to-head dominance.

Q: What memory features does the Xeon support that the i5 does not?

A: The Xeon E5-2623 v3 supports ECC memory and uses quad-channel DDR4 with 59.7 GB/s bandwidth. The i5-5675R supports only dual-channel DDR3 at 29.9 GB/s and does not support ECC.

Q: Which processor has integrated graphics?

A: Only the Intel Core i5-5675R includes integrated graphics, specifically Iris Pro Graphics 6200. The Intel Xeon E5-2623 v3 has no integrated graphics and requires a discrete GPU for display output.

Q: How many threads does each processor provide?

A: The i5-5675R provides 4 threads from 4 cores with no hyper-threading. The Xeon E5-2623 v3 provides 8 threads from 4 cores thanks to hyper-threading support.

Specification Differences

| Specification | Intel Core i5-5675R | Intel Xeon E5-2623 v3 |

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

| Cores | 4 | 4 |

| Threads | 4 | 8 |

| Base Clock | 3.10 GHz | 3.00 GHz |

| Boost Clock | 3.60 GHz | 3.50 GHz |

| TDP | 65 W | 105 W |

| Socket | Intel BGA 1364 | Intel Socket 2011-3 |

| Architecture | Broadwell | Haswell-EP |

| Process Node | 14 nm | 22 nm |

| Die Size | 182 mm² | 356 mm² |

| Transistors | Not specified | 2,600 million |

| L3 Cache | 4 MB (shared) | 10 MB (shared) |

| Memory Support | DDR3 | DDR4 |

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

| Memory Bandwidth | 29.9 GB/s | 59.7 GB/s |

| ECC Memory | No | Yes |

| PCIe | Gen 3, 16 Lanes | Gen 3, 40 Lanes |

| Integrated Graphics | Iris Pro Graphics 6200 | None |

| Market Segment | Desktop | Server/Workstation |

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

| Release Date | 2015-05-14 | 2014-09-07 |

| Launch MSRP | $265 | $444 |