Intel Core i3-10305 vs Intel Xeon D-1557 Comparison

The Intel Xeon D-1557 and the Intel Core i3-10305 occupy opposite ends of the Intel lineup, yet their average benchmark scores are nearly identical. The data shows a 12-core, 24-thread server processor from the Broadwell generation facing off against a 4-core, 8-thread desktop part from Comet Lake. Despite their architectural and market differences, the Xeon D-1557 edges out the Core i3-10305 in every single benchmark recorded, though the margins are consistently narrow. The Xeon D-1557 holds an average benchmark score of 2282, while the Core i3-10305 sits at 2264, a difference of just 0.8 percent. This places both processors at the 47th percentile among all CPUs, indicating they deliver comparable overall performance despite radically different designs.

Where Each One Wins

The benchmark data is unambiguous regarding total wins: the Intel Xeon D-1557 wins all six head-to-head tests, while the Intel Core i3-10305 wins none. However, the practical interpretation of these wins depends heavily on workload characteristics. The Xeon D-1557’s victories are consistent but slim, with delta percentages ranging from 0.6 percent in Cinebench R20 single-core to 0.9 percent in both Cinebench R15 multi-core and single-core tests. This means the Xeon D-1557 is the better choice for threaded workloads that can utilize its 12 cores and 24 threads, such as server virtualization, database processing, or compilation tasks. Its 45 W TDP also makes it suitable for dense, low-power server environments where thermal headroom is limited. Conversely, the Core i3-10305, despite losing every benchmark, is not without merit. Its 4 cores and 8 threads with a 4.50 GHz boost clock are more than sufficient for single-threaded desktop responsiveness, and its integrated UHD Graphics 630 eliminates the need for a discrete GPU in basic systems. The Core i3-10305’s higher clock speeds suggest it would excel in latency-sensitive tasks that do not scale across many cores, even if the synthetic Cinebench scores do not reflect a decisive advantage. The data indicates the Xeon D-1557 is the superior compute engine, while the Core i3-10305 serves as a more flexible desktop platform with graphics capabilities.

Architecture Differences

The architectural gap between these two processors is substantial, as they come from different Intel generations and target different market segments. The Intel Xeon D-1557 is built on the Broadwell architecture, specifically the Broadwell-DE variant, and uses a 14 nm process node. It features 12 cores and 24 threads with a base clock of 1500 MHz and a boost clock of 2.10 GHz. The cache hierarchy is per-core: 64 KB of L1 cache, 256 KB of L2 cache, and 1.5 MB of L3 cache per core, which totals 18 MB of L3 across all cores. This processor uses the Intel BGA 1667 socket and supports both DDR3 and DDR4 memory in a dual-channel configuration. It also supports ECC memory, a critical feature for server reliability, and provides 24 PCIe Gen 3 lanes. The die is relatively large at 246 mm² with 3,200 million transistors, reflecting its server-oriented design with more cores and memory controller flexibility.

In contrast, the Intel Core i3-10305 is based on the Comet Lake architecture, specifically Comet Lake-R, also on a 14 nm process node. It has 4 cores and 8 threads with a much higher base clock of 3.80 GHz and a boost clock of 4.50 GHz. Its cache configuration differs: 64 KB of L1 and 256 KB of L2 per core remain the same, but L3 cache is 8 MB shared across all cores. The Core i3-10305 uses the Intel Socket 1200 and supports only DDR4 memory in dual-channel mode, with a memory bandwidth of 42.7 GB/s. It does not support ECC memory, and its PCIe implementation is limited to 16 Gen 3 lanes. The chip also integrates UHD Graphics 630, which the Xeon D-1557 lacks entirely. The transistor count and die size for the Core i3-10305 are not listed in the data, but the architectural focus is clearly on high clock speeds and desktop compatibility rather than core count or server features.

Head-to-Head Benchmarks

The head-to-head results show a remarkably consistent pattern of narrow victories for the Intel Xeon D-1557. In Cinebench R15 multi-core, the Xeon D-1557 scores 795 against the Core i3-10305’s 788, a 0.9 percent advantage. The single-core R15 test shows the same deltaPct at 0.9 percent, with scores of 112 and 111 respectively. Moving to Cinebench R20, the multi-core test yields a score of 3314 for the Xeon D-1557 versus 3287 for the Core i3-10305, a 0.8 percent difference. The single-core R20 test narrows further to 0.6 percent, with scores of 467 and 464. In Cinebench R23, the multi-core scores are 7892 for the Xeon D-1557 and 7828 for the Core i3-10305, again a 0.8 percent gap. The single-core R23 test shows 1114 against 1105, a 0.8 percent difference.

These results are striking because the Xeon D-1557 wins single-core tests despite having a boost clock of just 2.10 GHz, compared to the Core i3-10305’s 4.50 GHz. The data suggests that the Xeon D-1557’s older Broadwell architecture compensates for its lower clock speed in these specific Cinebench workloads, or that the benchmarks are not purely clock-bound. In multi-core tests, the Xeon D-1557’s 12 cores and 24 threads provide a clear theoretical advantage, yet the actual score difference is minimal. This implies that the Core i3-10305’s higher per-core performance nearly offsets the Xeon D-1557’s core-count advantage in these particular rendering tests. The largest margin of victory is only 0.9 percent, which is within typical run-to-run variation for such benchmarks. The data shows a processor that is effectively a statistical tie in performance, despite the vast architectural differences.

Specification Differences

The specification sheet reveals several key differences between the two processors. The most obvious is core count: the Intel Xeon D-1557 has 12 cores and 24 threads, while the Intel Core i3-10305 has 4 cores and 8 threads. Clock speeds differ substantially, with the Xeon D-1557 running at a 1500 MHz base and 2.10 GHz boost, versus the Core i3-10305 at 3.80 GHz base and 4.50 GHz boost. The Xeon D-1557 has a TDP of 45 W, which is lower than the Core i3-10305’s 65 W, despite having three times the cores. Socket compatibility is entirely different: the Xeon D-1557 uses Intel BGA 1667, while the Core i3-10305 uses Intel Socket 1200. Memory support also diverges, with the Xeon D-1557 accepting both DDR3 and DDR4, while the Core i3-10305 only supports DDR4. ECC memory is supported on the Xeon D-1557 but not on the Core i3-10305. PCIe lane counts differ, with the Xeon D-1557 offering 24 Gen 3 lanes and the Core i3-10305 offering 16 Gen 3 lanes. The Xeon D-1557 has no integrated graphics, whereas the Core i3-10305 includes UHD Graphics 630. The L3 cache is configured per core on the Xeon D-1557 at 1.5 MB per core, while the Core i3-10305 has 8 MB shared. The memory bandwidth is listed only for the Core i3-10305 at 42.7 GB/s. Market segments differ: the Xeon D-1557 targets server and workstation use, while the Core i3-10305 is a desktop part. The release dates are also far apart, with the Xeon D-1557 launching in 2016 and the Core i3-10305 in 2021. The Xeon D-1557 has a launch MSRP of $694, while the Core i3-10305 has no listed launch MSRP.

FAQ

Q: Which processor has more cores and threads?

A: The Intel Xeon D-1557 has 12 cores and 24 threads, while the Intel Core i3-10305 has 4 cores and 8 threads. This gives the Xeon D-1557 a threefold advantage in core count and thread count.

Q: Do both processors support ECC memory?

A: No. The Intel Xeon D-1557 supports ECC memory, which is typical for server-class parts. The Intel Core i3-10305 does not support ECC memory, as it is a desktop-oriented processor.

Q: What is the performance difference in Cinebench R23 multi-core?

A: The Intel Xeon D-1557 scores 7892 in Cinebench R23 multi-core, while the Intel Core i3-10305 scores 7828. The Xeon D-1557 leads by 0.8 percent in this test.

Q: Which processor has a higher boost clock?

A: The Intel Core i3-10305 has a significantly higher boost clock of 4.50 GHz, compared to the Intel Xeon D-1557’s boost clock of 2.10 GHz. The Core i3-10305 also has a higher base clock at 3.80 GHz versus 1.50 GHz.

Q: Does the Intel Core i3-10305 have integrated graphics?

A: Yes, the Intel Core i3-10305 includes UHD Graphics 630. The Intel Xeon D-1557 has no integrated graphics, requiring a discrete GPU for display output.

Q: What are the average benchmark scores for each processor?

A: The Intel Xeon D-1557 has an average benchmark score of 2282, while the Intel Core i3-10305 has an average score of 2264. This places the Xeon D-1557 0.8 percent ahead of the Core i3-10305.