Intel Xeon D-1557

The Intel Xeon D-1557 is a 12-core, 24-thread server processor built on Intel's 14nm Broadwell architecture, marketed for the Server/Workstation segment. It launched on February 23, 2016, with a launch MSRP of $694, and it holds a 50th percentile ranking among all CPUs in the benchmark database. This analysis examines the processor's platform positioning, competitive standing, and workload suitability based strictly on its benchmark data.

Platform and Compatibility

The Intel Xeon D-1557 uses the Intel BGA 1667 socket, which is a soldered, non-upgradeable platform. This is a system-on-chip design where the processor is permanently attached to the motherboard, meaning the upgrade path is entirely dictated by the board itself rather than a removable CPU socket. The processor is based on the Broadwell-DE generation, specifically the "Broadwell" codename, fabricated on a 14 nm process node by Intel. The die contains 3,200 million transistors across a 246 mm² area.

Memory support includes both DDR3 and DDR4, operating through a dual-channel memory bus. The processor supports ECC memory, which is a critical feature for server and workstation reliability. The PCIe implementation provides Gen 3 connectivity with 24 lanes available from the CPU only, which is sufficient for a range of expansion cards, network adapters, and storage controllers typical of embedded server applications.

The production status is listed as Active, indicating the chip remains in manufacturing. The part number is SR2M4. The multiplier is locked, so overclocking is not possible; performance must be taken as configured. The cache hierarchy consists of 64 KB of L1 per core, 256 KB of L2 per core, and 1.5 MB of L3 per core, which totals 18 MB of L3 across the 12 cores. The integrated graphics are not specified, meaning the processor relies on discrete graphics or no graphics output, which is standard for server-class parts. The market segment is explicitly Server/Workstation, so consumer desktop features like unlocked multipliers or integrated display output are absent.

How It Compares

The nearest rival by average benchmark score is the Intel Core i7-10710U, which scores 2283 against the Xeon D-1557's 2282 average. The delta is 0%, meaning the two are statistically tied in overall performance. The Core i7-10710U is a mobile-class part, while the Xeon is a server chip, but their aggregate benchmark results place them at the same level.

The Intel Core i3-10300 scores 2284, a delta of -0.1% relative to the Xeon D-1557. This is a negligible difference, less than one point on the average score scale. The Xeon is essentially equivalent to a mid-range desktop Core i3 in raw average performance, despite having three times the core count and twelve times the thread count of the i3's four cores and eight threads.

The AMD Ryzen 5 7520U scores 2290, a delta of -0.3% compared to the Xeon. This ultra-low-power mobile processor edges out the Xeon by a hair, but the difference is within measurement noise. The Xeon's 12 cores do not translate into a higher average score than this 4-core mobile part, indicating that single-thread performance and clock speeds are the dominant factors in the average benchmark metric.

The AMD Ryzen 5 1500X scores 2271, a delta of 0.5% in favor of the Xeon. This is the only rival where the Xeon leads, but the margin is still tiny. The Ryzen 5 1500X is a desktop quad-core, and the Xeon's 12 cores provide only a half-percent advantage in the aggregate score, which again highlights that the average benchmark score is not a pure core-count metric.

Power and Thermals

The Xeon D-1557 has a TDP of 45 watts. This is a relatively low power envelope for a 12-core processor, made possible by the modest base clock of 1500 MHz and boost clock of 2.10 GHz. The 45-watt TDP class places it in the realm of embedded and compact server designs where thermal dissipation is a primary constraint.

A 45-watt TDP implies that a passive heatsink or a small low-profile active cooler is sufficient for most deployments. The processor does not require the large tower coolers or liquid cooling solutions typical of high-end desktop CPUs. In a server chassis with adequate airflow, a simple aluminum fin stack would likely handle the thermal load, given the low clock speeds and power draw. The base clock of 1500 MHz is deliberately conservative to keep power consumption in check, while the 2.10 GHz boost provides headroom for burst workloads without exceeding the thermal design point. The socket type, Intel BGA 1667, is soldered, so cooling solutions must be designed for the specific board layout rather than being interchangeable socket coolers.

FAQ

Q: What is the core and thread count of the Intel Xeon D-1557?

A: The processor has 12 cores and 24 threads, based on simultaneous multithreading.

Q: Does the Xeon D-1557 support ECC memory?

A: Yes, ECC memory is supported, which is essential for data integrity in server workloads.

Q: What is the launch MSRP of the Xeon D-1557?

A: The launch MSRP is $694, and the processor remains in Active production status.

Q: What memory types are compatible with this processor?

A: It supports both DDR3 and DDR4 memory, running through a dual-channel memory bus.

Q: Is the Xeon D-1557 overclockable?

A: No, the multiplier is locked, so the CPU operates at its factory-configured clocks of 1500 MHz base and 2.10 GHz boost.

Q: How does the Xeon D-1557 compare to the AMD Ryzen 5 1500X?

A: The Xeon scores 0.5% higher in average benchmark score, with an average of 2282 versus 2271 for the Ryzen.

Benchmark Performance

The Cinebench scores reveal a clear split between multi-core and single-core performance. In Cinebench R15 multicore, the Xeon D-1557 scores 795, while its single-core score is 112. The multicore-to-singlecore ratio is approximately 7.1x, which reflects the 12-core design scaling across the rendering workload. In Cinebench R20, the multicore score is 3314 and single-core is 467, a ratio of about 7.1x, consistent with R15. In Cinebench R23, the multicore score is 7892 and single-core is 1114, a ratio of 7.1x as well. This consistent ratio indicates that the processor scales nearly linearly with core count in these rendering tests, with no significant thermal or power throttling affecting multi-threaded performance.

The single-core scores are low relative to modern desktop CPUs. A Cinebench R23 single-core score of 1114 is less than half of what a high-end desktop processor achieves, which is expected given the 2.10 GHz boost clock and the server-oriented Broadwell architecture. The average benchmark score is 2282, which places the processor at the 50th percentile of all CPUs. This means half of all tested CPUs are faster and half are slower, a median position that reflects the Xeon's balance of core count and clock speed.

Comparing to the nearest rivals, the Xeon D-1557's average score of 2282 is essentially identical to the Intel Core i7-10710U's 2283 (delta 0%). The Core i3-10300 scores 2284, which is 0.1% higher. The AMD Ryzen 5 7520U scores 2290, which is 0.3% higher. The AMD Ryzen 5 1500X scores 2271, which is 0.5% lower. These deltas are all within a 1% band, making the Xeon D-1557 statistically indistinguishable from its four closest rivals in aggregate performance. The percentile rank of 50 reinforces this: the processor is exactly average, not a standout in either direction.

The Cinebench multicore scores, however, tell a different story than the average score. With a Cinebench R23 multicore score of 7892, the Xeon D-1557 would likely outperform the quad-core rivals in heavily threaded workloads, but the average benchmark metric weights single-core performance heavily enough to pull the overall score down to parity. This means the Xeon's advantage is workload-dependent: it excels in parallel rendering but lags in lightly threaded tasks.

Who Should Consider It

For gaming workloads, the Intel Xeon D-1557 is a poor fit. The single-core performance is low, as evidenced by the Cinebench R23 single-core score of 1114, which is far below what modern games require for high frame rates. Most games are not optimized for 24 threads, and the 2.10 GHz boost clock will bottleneck performance in titles that rely on one or two fast cores. The 50th percentile ranking further suggests that many consumer processors would offer better gaming performance.

For content creation and rendering, the picture improves. The Cinebench R23 multicore score of 7892 indicates strong multi-threaded throughput, and the 7.1x scaling ratio from single-core to multi-core shows that the 12 cores are effectively utilized in threaded workloads. Video encoding, 3D rendering, and batch image processing would benefit from the 24 threads, provided the software scales well. The 45-watt TDP also makes it suitable for always-on workstations where power efficiency is a concern.

For office and general productivity tasks, the Xeon D-1557 is adequate but not exceptional. The average benchmark score of 2282 is middling, and the single-core performance is below par for snappy application launches and spreadsheet calculations. The ECC memory support and server-grade reliability are advantages for business-critical data, but the low clock speeds mean that day-to-day tasks will feel slower than on a modern quad-core desktop part. The 24 threads help with background tasks and virtualization, making it a reasonable choice for a small server running multiple VMs or containerized workloads where the low power draw and ECC support are more valuable than raw single-thread speed.