Intel Core i5-1345UE vs Intel Xeon D-1577 Comparison

The Intel Xeon D-1577 and Intel Core i5-1345UE occupy opposite ends of the design spectrum, yet benchmark results place them in a statistical tie across every measured workload. The Xeon D-1577, a 16-core Broadwell server part from 2016, edges out the 10-core Raptor Lake mobile processor from 2023 in all six Cinebench comparisons, but the margins are consistently under one percent. The data shows a classic case where architectural age and core-count advantages are neutralized by process technology and clock-speed improvements.

Head-to-Head Benchmarks

The Xeon D-1577 wins every single benchmark in the comparison, but the victories are razor-thin. In Cinebench R15 multicore, the Xeon scores 946 against the Core i5's 940, a delta of just 0.6%. The single-core R15 result is similarly close: 133 versus 132, a 0.8% margin. These differences are within run-to-run variance for most testing environments, though the direction is consistent.

Moving to Cinebench R20, the pattern holds. The Xeon D-1577 posts 3943 in multicore versus 3918 for the Core i5-1345UE, another 0.6% gap. Single-core R20 sees 556 versus 553, a 0.5% difference. The newest workload, Cinebench R23, shows 9389 against 9329 in multicore (0.6% delta) and 1325 against 1317 in single-core (0.6% delta). Across all six tests, the Xeon wins by an average margin of roughly 0.6%, with no test exceeding 0.8%.

What makes these results notable is the hardware behind them. The Xeon D-1577 uses 16 physical cores and 32 threads, running at a 1300 MHz base clock with a 2100 MHz boost. The Core i5-1345UE uses 10 cores and 12 threads, with a 1400 MHz base and a 4600 MHz boost. The Core i5's boost clock is more than double the Xeon's, which explains how it nearly matches a processor with 60% more cores and 167% more threads. The newer 10 nm Raptor Lake architecture also brings a 12 MB shared L3 cache, whereas the Broadwell Xeon uses a per-core 1.5 MB L3 arrangement.

The average benchmark scores reflect this parity. The Xeon D-1577 has an average score of 2715 across all benchmarks, while the Core i5-1345UE sits at 2698. That 17-point gap (0.6%) places both processors at the 50th percentile among all CPUs. For context, the Xeon's nearest rivals list includes the Intel Core i7-11390H at 2715 (0% delta) and the AMD Ryzen 5 PRO 5650U at 2713 (0.1% delta). The Core i5's rivals include the Intel Core i7-8700T at 2701 (-0.1% delta) and the Intel Xeon E5-2640 v3 at 2703 (-0.2% delta). Both chips effectively trade blows with a cluster of mid-range desktop and mobile parts from several generations.

Where Each One Wins

The benchmark data does not show a clear workload-based split because the Xeon D-1577 wins all six tests. However, the composition of those wins reveals different strengths. The Xeon's largest relative advantage appears in single-core R15, where it leads by 0.8%. This is surprising given the Core i5's 4600 MHz boost clock versus the Xeon's 2100 MHz, but the data is unambiguous.

For multithreaded workloads, the Xeon's core-count advantage shows up as a consistent 0.6% lead across R15, R20, and R23 multicore tests. The Core i5-1345UE, despite having fewer cores, manages to stay within striking distance because its higher boost clock and newer architecture compensate for the deficit. In single-threaded tests, the Core i5's clock advantage does not translate into a win — the Xeon holds a 0.5-0.8% edge in all three generations of Cinebench.

The practical interpretation is that neither chip has a meaningful edge in any specific scenario. The Xeon's 16 cores and 32 threads make it theoretically better suited for heavily parallel server workloads, while the Core i5's 4.6 GHz boost and integrated Iris Xe Graphics 80EU make it more versatile for mobile tasks that require responsiveness. But the benchmark scores do not support a decisive recommendation for either based on raw compute alone. The Xeon's 45 W TDP versus the Core i5's 15 W TDP is a significant differentiator, but power efficiency is not captured in these Cinebench scores.

The Verdict

From a pure performance standpoint, the data shows no meaningful winner. The Intel Xeon D-1577 wins all six head-to-head benchmarks, but the largest margin is 0.8% — a figure that falls within typical measurement noise. The average benchmark score difference is 17 points out of roughly 2700, which is negligible. Users choosing between these two should base their decision on platform characteristics rather than compute performance.

The Xeon D-1577 is the choice for server or workstation deployments that require 16 cores, 32 threads, and ECC memory support. It uses DDR3 or DDR4 memory in a dual-channel configuration, has 24 PCIe Gen 3 lanes, and fits an Intel BGA 1667 socket. Its 45 W TDP is higher, but it operates in a segment where that is acceptable. The launch MSRP is 1379, and it remains in active production.

The Core i5-1345UE is the choice for mobile or embedded designs where the 15 W TDP and integrated Iris Xe Graphics 80EU are decisive factors. It supports both DDR4 and DDR5 memory, has 8 PCIe Gen 4 lanes, and uses the Intel BGA 1744 socket. It does not support ECC memory, which limits its appeal in certain reliability-focused environments. Its 4.6 GHz boost clock provides responsiveness that the Xeon cannot match, even if the benchmark scores do not reflect it.

For users who prioritize raw multithreaded throughput, the Xeon D-1577 technically wins, but the margin is too small to justify choosing it over the Core i5 purely for compute. For users who prioritize power efficiency, integrated graphics, or modern memory support, the Core i5-1345UE is the better fit. The data supports a verdict of "benchmark tie with platform-specific advantages."

FAQ

Q: Which processor has a higher single-core score in Cinebench R23?

A: The Intel Xeon D-1577 scores 1325 in Cinebench R23 single-core, while the Intel Core i5-1345UE scores 1317. The Xeon leads by 0.6%.

Q: How do the multicore scores compare in Cinebench R20?

A: The Xeon D-1577 scores 3943 in Cinebench R20 multicore, and the Core i5-1345UE scores 3918. The Xeon wins by 0.6%.

Q: What is the average benchmark score for each processor?

A: The Xeon D-1577 has an average benchmark score of 2715, and the Core i5-1345UE has an average of 2698. The Xeon leads by 17 points.

Q: Do both processors support ECC memory?

A: No. The Xeon D-1577 supports ECC memory, while the Core i5-1345UE does not.

Q: What is the core and thread count difference?

A: The Xeon D-1577 has 16 cores and 32 threads. The Core i5-1345UE has 10 cores and 12 threads.

Q: Which processor has integrated graphics?

A: The Core i5-1345UE includes Iris Xe Graphics 80EU. The Xeon D-1577 has no integrated graphics listed.

Architecture Differences

The Xeon D-1577 is built on the Broadwell architecture, specifically the Broadwell-DE generation, using a 14 nm process node at Intel's foundry. It contains 3,200 million transistors on a 246 mm² die. The Core i5-1345UE uses the Raptor Lake architecture, specifically Raptor Lake-U, on a 10 nm process node. Transistor count and die size are not listed for the Core i5.

Cache layouts differ substantially. The Xeon D-1577 provides 64 KB of L1 cache per core, 256 KB of L2 per core, and 1.5 MB of L3 per core, with no total L3 figure given. The Core i5-1345UE has 80 KB of L1 per core, 1.25 MB of L2 per core, and 12 MB of shared L3 cache. This means the Core i5's L3 is a unified pool, while the Xeon's is distributed per core.

Memory support diverges by generation. The Xeon supports DDR3 and DDR4 in a dual-channel configuration. The Core i5 supports DDR4 and DDR5, also dual-channel. ECC memory is available on the Xeon but not on the Core i5. PCIe connectivity differs as well: the Xeon provides 24 PCIe Gen 3 lanes (CPU only), while the Core i5 provides 8 PCIe Gen 4 lanes (CPU only).

The Core i5-1345UE integrates Iris Xe Graphics 80EU, which the Xeon lacks. Socket compatibility is separate: the Xeon uses Intel BGA 1667, and the Core i5 uses Intel BGA 1744. The Xeon has a 45 W TDP, while the Core i5 has a 15 W TDP. The Xeon's base clock is 1300 MHz with a 2100 MHz boost; the Core i5's base clock is 1400 MHz with a 4600 MHz boost. The Xeon launched on 2016-02-23, while the Core i5 launched on 2023-01-03. The Xeon's part number is SR2M2; no part number is listed for the Core i5. Neither processor has an unlocked multiplier.