Intel Core i5-1240P vs Intel Xeon D-1581 Comparison

The benchmark data presents a clear split: the Intel Core i5-1240P dominates in most Cinebench tests, but the Intel Xeon D-1581 claims a decisive victory in the most demanding multi-threaded workload. Overall, the i5-1240P wins 5 of the 6 head-to-head comparisons, yet the Xeon D-1581’s single win in Cinebench R23 multi-core is substantial enough to define its purpose. The average benchmark scores are nearly identical—3238 for the Xeon versus 3202 for the i5—placing both at the 53rd percentile, which indicates these are closely matched overall performers with very different strengths.

Head-to-Head Benchmarks

The i5-1240P’s advantage is most pronounced in single-core tests, where its higher boost clock delivers commanding leads. In Cinebench R15 single-core, the i5 scores 226 against the Xeon’s 159, a 29.6% margin. This gap narrows slightly in R20 single-core, with the i5 at 795 versus 663, a 16.6% difference. The R23 single-core result is the closest of all, with the i5 scoring 1600 against 1580, a slim 1.2% edge. These results consistently favor the i5, reflecting its architecture’s superior per-thread efficiency.

Multi-core results tell a more complex story. In Cinebench R15 multi-core, the i5 wins decisively with 1566.5 against 1128, a 28% lead. The R20 multi-core test shows a similar pattern, with the i5 at 5632 versus 4702, a 16.5% advantage. However, the Cinebench R23 multi-core test flips the script entirely. Here, the Xeon D-1581 scores 11197, while the i5 manages only 9392, giving the Xeon a 19.2% victory. This is the Xeon’s only win, but it is a significant one, suggesting that the benchmark’s longer duration or memory access patterns favor the Xeon’s 16-core, 32-thread configuration.

The overall average benchmark scores reinforce the close competition. The Xeon’s average of 3238 places it just 0.3% behind the AMD Ryzen 5 1600X (3249) and 0.6% ahead of both the AMD Ryzen 7 4800U and AMD Ryzen 3 PRO 5350GE (both 3218). The i5’s average of 3202 sits 0.1% ahead of the Intel Core i3-13100T (3198) and 0.2% ahead of the Intel Core i7-9700E (3197), while trailing the Intel Atom P5342 (3217) by 0.5%. These proximity scores indicate that neither processor has a clear overall performance crown; instead, they excel in different workload types.

FAQ

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

A: The Intel Core i5-1240P wins every single-core benchmark. It leads by 29.6% in Cinebench R15 (226 vs 159), 16.6% in R20 (795 vs 663), and 1.2% in R23 (1600 vs 1580).

Q: Does the Xeon D-1581 win any benchmarks?

A: Yes, it wins Cinebench R23 multi-core by a 19.2% margin, scoring 11197 against the i5-1240P’s 9392. This is its only victory in the head-to-head set.

Q: How do their overall average scores compare?

A: The Xeon D-1581 averages 3238, while the i5-1240P averages 3202. Both processors sit at the 53rd percentile among all CPUs, indicating near-identical overall standing.

Q: What are the nearest rivals for each processor?

A: The Xeon D-1581’s closest rival is the AMD Ryzen 5 1600X (3249, -0.3% delta). The i5-1240P’s closest rival is the Intel Core i3-13100T (3198, +0.1% delta).

Q: Which processor has more cores and threads?

A: The Xeon D-1581 has 16 cores and 32 threads. The i5-1240P has 12 cores and 16 threads.

Q: Do both processors support ECC memory?

A: No. The Xeon D-1581 supports ECC memory, while the i5-1240P does not.

Architecture Differences

The two processors come from different Intel design eras. The Xeon D-1581 uses the Broadwell architecture on a 14 nm process node, with a die size of 246 mm² and 3,200 million transistors. It targets the Server/Workstation segment and uses the Intel BGA 1667 socket. In contrast, the i5-1240P employs the Alder Lake architecture on a 10 nm process, with a smaller die size of 217 mm² and no transistor count listed. It is a Mobile segment part using the Intel BGA 1744 socket.

Cache hierarchies differ significantly. The Xeon allocates 64 KB of L1 and 256 KB of L2 per core, plus 1.5 MB of L3 per core. The i5 provides 80 KB of L1 and 1.25 MB of L2 per core, but pools its L3 into a shared 12 MB cache. This shared design likely contributes to the i5’s stronger single-core performance, allowing faster access to frequently used data.

Memory support also diverges. The Xeon supports both DDR3 and DDR4, while the i5 supports DDR4 and DDR5. Both use dual-channel memory buses, but neither lists a specific memory bandwidth figure. PCIe capabilities differ as well: the Xeon provides Gen 3 with 24 CPU lanes, while the i5 offers Gen 4 with 20 CPU lanes. The i5 also includes integrated Iris Xe 80EU graphics, whereas the Xeon has no integrated graphics.

Specification Differences

The core and thread counts are the most obvious divergence: the Xeon D-1581 offers 16 cores and 32 threads, while the i5-1240P provides 12 cores and 16 threads. Base clocks are similar, with the Xeon at 1800 MHz and the i5 at 1700 MHz. Boost clocks, however, differ dramatically: the Xeon reaches only 2.40 GHz, while the i5 boosts to 4.40 GHz.

Thermal design power (TDP) reflects their different roles. The Xeon is rated at 65 watts, while the i5 is rated at 28 watts. The Xeon’s higher TDP supports its additional cores, while the i5’s lower TDP suits mobile use. Socket types also differ, with the Xeon using Intel BGA 1667 and the i5 using Intel BGA 1744, making them incompatible with each other’s motherboards.

The Xeon supports ECC memory, a feature absent from the i5. The Xeon’s PCIe implementation is Gen 3 with 24 lanes, whereas the i5 uses Gen 4 with 20 lanes. The i5 includes integrated Iris Xe 80EU graphics; the Xeon has none. Release dates are nearly six years apart, with the Xeon launching in 2016 and the i5 in 2022. Both processors remain active in production, and neither has an unlocked multiplier.

Where Each One Wins

The Intel Core i5-1240P wins in scenarios requiring high single-thread responsiveness. Its 4.40 GHz boost clock delivers superior performance in everyday applications, lightly threaded workloads, and tasks that depend on low-latency per-core execution. The 29.6% lead in R15 single-core and 16.6% lead in R20 single-core make it the clear choice for interactive use, such as desktop productivity or mobile computing where the 28-watt TDP also offers efficiency benefits.

The Intel Xeon D-1581 wins in sustained multi-threaded workloads, as evidenced by its 19.2% victory in Cinebench R23 multi-core. Its 16 cores and 32 threads provide raw parallelism that benefits heavily threaded applications like rendering, scientific computing, or server-side virtualization. The support for ECC memory further positions it for reliability-focused server or workstation environments where data integrity is paramount.

The processors also differ in platform capabilities. The i5’s PCIe Gen 4 support and integrated Iris Xe graphics make it more versatile for consumer or mobile systems. The Xeon’s PCIe Gen 3 with 24 lanes, while older, offers more lanes for expansion in server contexts. The Xeon’s dual memory support (DDR3 and DDR4) provides flexibility in legacy deployments, whereas the i5’s DDR5 support enables newer, faster memory technologies.

The Verdict

The data supports a clear recommendation based on workload. The Intel Core i5-1240P is the better choice for users prioritizing single-core performance and overall versatility. It wins 5 of 6 head-to-head benchmarks, including all single-core tests and two of three multi-core tests. Its 4.40 GHz boost clock, shared 12 MB L3 cache, and integrated graphics make it well-suited for mobile computing, general productivity, and applications that benefit from high clock speeds.

The Intel Xeon D-1581 is the pick for users running sustained, heavily threaded workloads that scale with core count. Its 19.2% victory in Cinebench R23 multi-core demonstrates its capability in long-duration parallel tasks. The combination of 16 cores, 32 threads, ECC memory support, and a 65-watt TDP positions it as a server or workstation processor where reliability and multi-threading outweigh single-core speed.

Both processors sit at the 53rd percentile overall, and their average benchmark scores are within 1.1% of each other. This near-parity means the choice comes down to specific use cases: the i5 for responsive, mixed workloads; the Xeon for sustained parallel processing. Neither is a universal winner, but each excels in its intended domain.