Intel Core i5-11260H vs Intel Xeon E5-1681 v3 Comparison

# FAQ

Q: Which processor has the higher average benchmark score?

A: The Intel Core i5-11260H has an average benchmark score of 3721, while the Intel Xeon E5-1681 v3 scores 3643. The Core i5 sits at the 56th percentile of all CPUs, just ahead of the Xeon's 55th percentile.

Q: How do the two CPUs compare in multi-core Cinebench R23 performance?

A: The Core i5-11260H scores 12905 in Cinebench R23 multi-core, which is 2.4% higher than the Xeon E5-1681 v3's 12597. Despite having fewer cores, the Core i5 edges out the Xeon in this workload.

Q: Which processor supports ECC memory?

A: The Intel Xeon E5-1681 v3 supports ECC memory, while the Intel Core i5-11260H does not. This makes the Xeon suitable for error-correcting memory configurations in server or workstation environments.

Q: What is the difference in memory bandwidth between the two chips?

A: The Xeon E5-1681 v3 offers 68.3 GB/s of memory bandwidth through its quad-channel memory bus, while the Core i5-11260H provides 51.2 GB/s via dual-channel memory. The Xeon's greater bandwidth is a direct result of its additional memory channels.

Q: How many PCIe lanes does each processor provide?

A: The Xeon E5-1681 v3 supplies 40 PCIe Gen 3 lanes from the CPU, whereas the Core i5-11260H offers 20 PCIe Gen 4 lanes. The Xeon provides more lanes, but the Core i5 supports a newer PCIe generation.

Q: What is the production status of each processor?

A: The Core i5-11260H is listed as Active in production, while the Xeon E5-1681 v3 is marked as End-of-life. The Core i5 was released in 2021, whereas the Xeon launched in 2014.

# Architecture Differences

The Intel Core i5-11260H and Intel Xeon E5-1681 v3 represent two entirely different design philosophies from Intel. The Core i5 is built on the Tiger Lake-H architecture using a 10 nm process node, while the Xeon E5-1681 v3 uses the older Haswell-EP architecture on a 22 nm process. This generational gap is substantial, with the Tiger Lake design packing transistors more densely; the die size for the Core i5 is 190 mm², compared to the Xeon's 356 mm².

The core configurations differ significantly. The Core i5-11260H features 6 cores and 12 threads, while the Xeon E5-1681 v3 offers 10 cores and 20 threads. This gives the Xeon a 4-core and 8-thread advantage in raw parallelism. However, the Core i5 compensates with a much higher boost clock: 4.40 GHz versus the Xeon's 3.50 GHz. The base clocks also favor the Xeon at 2.90 GHz versus 2.10 GHz, but the Turbo range of the Core i5 is considerably wider.

Cache hierarchies reveal another divergence. The Core i5 uses 80 KB of L1 cache per core and 1.25 MB of L2 cache per core, while the Xeon has 64 KB of L1 per core and 256 KB of L2 per core. The shared L3 cache favors the Xeon, which has 25 MB shared, compared to the Core i5's 12 MB shared. This means the Xeon has more than double the last-level cache, which can benefit certain data-heavy workloads that fit within that pool.

Memory support shows a split between consumer and enterprise features. Both support DDR4, but the Core i5 uses a dual-channel memory bus achieving 51.2 GB/s, while the Xeon uses quad-channel memory achieving 68.3 GB/s. The Xeon also adds ECC memory support, which the Core i5 lacks. PCIe capabilities differ as well: the Core i5 provides 20 PCIe Gen 4 lanes, while the Xeon provides 40 PCIe Gen 3 lanes. The newer PCIe standard on the Core i5 offers higher per-lane bandwidth, but the Xeon has twice the lane count.

Integrated graphics are present on the Core i5 (UHD Graphics), while the Xeon has no integrated GPU. The Core i5 targets the mobile segment with a 35 W TDP and uses the Intel BGA 1787 socket, whereas the Xeon is a server/workstation part with a 135 W TDP on the Intel Socket 2011-3. The Xeon's transistor count is recorded at 2,600 million, reflecting its larger and older design.

# Head-to-Head Benchmarks

Across all six recorded benchmark comparisons, the Intel Core i5-11260H wins every single test. This is a clean sweep, with the Core i5 taking all six victories and the Xeon E5-1681 v3 recording zero wins. The margin is consistent, hovering just above two percent in each workload.

In Cinebench R15 multi-core, the Core i5 scores 1300 against the Xeon's 1269, a 2.4% advantage. The single-core R15 test shows a similar story: 183 for the Core i5 versus 179 for the Xeon, a 2.2% edge. Moving to Cinebench R20, the Core i5 posts 5420 in multi-core versus 5290, a 2.5% lead, and 764 in single-core versus 746, a 2.4% margin. Cinebench R23 mirrors these results: multi-core sees the Core i5 at 12905 versus 12597 (2.4% ahead), and single-core sees 1821 versus 1778 (also 2.4% ahead).

The consistent delta across all tests suggests that the Core i5's architectural efficiency and higher clock speeds overcome the Xeon's core-count advantage. The Xeon has 10 cores against 6, yet it still trails in multi-threaded Cinebench workloads. This indicates that per-core performance from the Tiger Lake architecture, combined with the 4.40 GHz boost clock, is sufficient to outpace the older Haswell design even when the Xeon has 67% more cores.

Geekbench data is only available for the Core i5, which scores 5780 in multi-core and 1595 in single-core. This benchmark is not recorded for the Xeon E5-1681 v3, so a direct comparison cannot be made in that test.

# Specification Differences

| Specification | Intel Core i5-11260H | Intel Xeon E5-1681 v3 |

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

| Cores | 6 | 10 |

| Threads | 12 | 20 |

| Base Clock | 2.10 GHz | 2.90 GHz |

| Boost Clock | 4.40 GHz | 3.50 GHz |

| TDP | 35 W | 135 W |

| Socket | Intel BGA 1787 | Intel Socket 2011-3 |

| Architecture | Tiger Lake | Haswell |

| Process Node | 10 nm | 22 nm |

| Die Size | 190 mm² | 356 mm² |

| Transistors | Not recorded | 2,600 million |

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

| L2 Cache | 1.25 MB (per core) | 256 KB (per core) |

| L3 Cache | 12 MB (shared) | 25 MB (shared) |

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

| Memory Bandwidth | 51.2 GB/s | 68.3 GB/s |

| ECC Memory | No | Yes |

| PCIe | Gen 4, 20 Lanes | Gen 3, 40 Lanes |

| Integrated Graphics | UHD Graphics | None |

| Market Segment | Mobile | Server/Workstation |

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

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

| Part Number | SRKT0 | SR1Y2 |

The launch MSRP for the Core i5-11260H is $250. The Xeon E5-1681 v3 has no recorded launch MSRP in the database.

# Where Each One Wins

The Intel Core i5-11260H wins in every benchmark category recorded. Its advantages are most pronounced in single-threaded performance, where it leads by 2.2% to 2.4% across Cinebench R15, R20, and R23. The architecture's newer 10 nm process and higher boost clock of 4.40 GHz give it a clear edge in workloads that rely on per-core speed. For mobile users, the 35 W TDP makes it suitable for laptops, and the integrated UHD Graphics provide a display output without needing a discrete GPU. The 20 PCIe Gen 4 lanes offer modern connectivity for current peripherals.

The Intel Xeon E5-1681 v3, despite losing all benchmarks, has specific strengths that are not captured in Cinebench scores. Its 10 cores and 20 threads provide more parallel execution units, which can be beneficial in heavily threaded server workloads that scale beyond Cinebench's demands. The 25 MB of shared L3 cache is more than double the Core i5's 12 MB, potentially improving performance for data sets that fit within that larger cache pool. The quad-channel memory bus delivers 68.3 GB/s of bandwidth, which is 33% higher than the Core i5's 51.2 GB/s. ECC memory support makes the Xeon viable for error-sensitive computing environments. The 40 PCIe Gen 3 lanes allow for more expansion cards and devices directly attached to the CPU.

The Xeon's market segment is server and workstation, where its features align with multi-socket platforms, large memory configurations, and reliability requirements. Its end-of-life status, however, means it is no longer actively produced, while the Core i5 remains in active production.

# The Verdict

The benchmark data is unambiguous: the Intel Core i5-11260H outperforms the Intel Xeon E5-1681 v3 in every recorded test. The Core i5 leads by 2.4% in Cinebench R15 multi-core, 2.2% in R15 single-core, 2.5% in R20 multi-core, 2.4% in R20 single-core, 2.4% in R23 multi-core, and 2.4% in R23 single-core. Despite having 4 fewer cores and 8 fewer threads, the Core i5's newer Tiger Lake architecture and significantly higher 4.40 GHz boost clock deliver superior results across the board. The Xeon's 10-core count cannot compensate for the older Haswell design's lower clock speeds and older process node.

For users prioritizing raw benchmark performance, single-thread responsiveness, and modern platform features such as PCIe Gen 4, the Core i5-11260H is the clear choice. It also carries the advantage of active production status and a lower 35 W TDP, making it suitable for mobile systems. The Core i5's launch MSRP is $250, though pricing considerations are separate from the performance data.

The Xeon E5-1681 v3, while losing all benchmark comparisons, retains a role for specific enterprise scenarios. Its ECC memory support, quad-channel memory bus with 68.3 GB/s bandwidth, 40 PCIe Gen 3 lanes, and 25 MB of shared L3 cache target server and workstation environments where these features matter more than Cinebench scores. The larger core count of 10 cores and 20 threads may also help in workloads that scale beyond the tested benchmarks. However, its end-of-life production status and 135 W TDP make it a less attractive option for new deployments compared to the actively produced Core i5.

The recorded average benchmark scores place the Core i5 at 3721 (56th percentile) and the Xeon at 3643 (55th percentile). The Core i5's nearest rival is the AMD Ryzen 5 PRO 4650GE at 3732, a 0.3% difference, while the Xeon's closest competitor is the Intel Core i9-10885H at 3651, a 0.2% gap. These figures confirm that both processors sit in a similar performance tier overall, but the Core i5 consistently finishes ahead in direct comparisons. The data suggests that any user choosing between these two should select the Core i5 if benchmark performance is the deciding factor, while the Xeon only makes sense for specialized server features that the Core i5 does not offer.