Intel Xeon Platinum 8256

Intel Xeon Platinum 8256 is a 4-core, 8-thread Cascade Lake-SP processor built for the server and workstation segment, operating at a base clock of 3.80 GHz and a boost clock of 3.90 GHz. It sits in the 50th percentile of all CPUs in the database, indicating a mid-pack standing overall, though its benchmark profile is notably shaped by its modest core count and high-frequency design. The processor has a 105 W TDP and supports DDR4 memory with ECC, targeting latency-sensitive and lightly threaded workloads rather than massive parallel throughput.

Benchmark Performance

The Intel Xeon Platinum 8256’s benchmark data is absent from the current record, with an average benchmark score of zero and no entries in the benchmarks field. This absence makes direct numeric comparison impossible, but the processor’s position in the 50th percentile of all CPUs provides a broad reference point: it sits exactly at the median of the database’s cumulative performance distribution. That percentile ranking, however, must be weighed against the processor’s specifications — 4 cores and 8 threads at 3.80 GHz base and 3.90 GHz boost — which suggest a design optimized for low-latency, single-threaded responsiveness rather than multi-threaded brute force. In the absence of measured scores, the data indicates that the 8256 would likely outperform many higher-core-count Xeons in single-threaded tasks due to its relatively high boost clock, but would lag significantly in multi-threaded workloads where core count dominates. The 16.5 MB shared L3 cache, partitioned across the four cores, offers a relatively generous per-core cache ratio of roughly 4.1 MB per core, which can mitigate memory latency in cache-sensitive applications. The 64 KB L1 and 1 MB L2 per core further support this latency-focused architecture. Without rival scores or deltaPct values in the nearestRivals field — which is empty — the benchmark analysis must rely on architectural inference: the 8256’s frequency-to-core ratio is unusually high for a Platinum part, and its 14 nm process node from Intel’s Cascade Lake generation is consistent with that era’s server offerings. The absence of measured data means the percentile ranking is the only quantitative anchor; it suggests that while the 8256 is not a top performer globally, it holds a defensible middle-ground position, likely driven by its clock speed compensating for its low core count in typical database workloads.

How It Compares

The nearestRivals field is empty for the Intel Xeon Platinum 8256, meaning no direct competitor scores or deltaPct values are available in the fact pack. Consequently, comparison must be framed qualitatively against the broader Xeon Platinum lineup, which is characterized by high core counts and large caches. The 8256’s 4-core configuration is an outlier within its own family — most Platinum parts feature far more cores, often exceeding 20. This suggests that the 8256 is positioned as a specialized SKU for workloads that prioritize clock speed and low thread latency over parallel throughput. Against a typical 16-core Xeon Platinum, the 8256 would likely lose decisively in multi-threaded benchmarks, potentially by a factor of four or more, given the linear scaling of many server workloads with core count. However, in single-threaded or lightly threaded tasks — such as certain database transactions, network packet processing, or real-time control systems — the 8256’s 3.90 GHz boost clock could give it a per-core advantage over rivals that boost lower, often in the 3.0–3.5 GHz range for higher-core-count parts. The 105 W TDP is notably low for a Platinum processor, further indicating that this SKU is not designed for sustained all-core loads but rather for bursty, latency-sensitive operations where power efficiency under partial load matters. Without exact rival data, the comparison hinges on the architectural trade-off: the 8256 trades raw core count for higher clocks and lower power, making it a niche part within a family that otherwise emphasizes scalability.

Who Should Consider It

The Intel Xeon Platinum 8256 is best suited for workloads that are latency-bound rather than throughput-bound. Its 3.80 GHz base and 3.90 GHz boost clocks, combined with 8 threads, make it a strong candidate for single-threaded database operations, financial trading systems, or network infrastructure where response time is critical and parallel thread counts are low. The 16.5 MB shared L3 cache, with roughly 4.1 MB per core, is generous for a 4-core part and can substantially reduce memory access penalties in cache-resident workloads, such as in-memory key-value stores or real-time analytics. For gaming, the 8256 is a poor fit — it lacks integrated graphics and targets server platforms, and its 4-core/8-thread count is below what modern gaming workloads expect, even if the high clock speed would help in some older titles. For content creation, the 8256 would struggle in multi-threaded rendering or video encoding tasks, where 8 threads are far below the 16 to 32 threads typical of mainstream creation CPUs; however, tasks like 3D modeling viewport manipulation or light photo editing that rely on single-core performance could see acceptable results. Office productivity, such as spreadsheet processing, word processing, and web browsing, would run smoothly due to the high clock speeds, but the platform cost and server-oriented feature set — Intel Socket 3647, DDR4 ECC support — make it overkill for typical office use. The processor’s 50th percentile ranking underscores its mediocrity in the broader CPU landscape, but that ranking is skewed by the prevalence of consumer and high-core-count server parts; within its narrow niche, the 8256 could deliver competitive latency performance. The 14 nm process node and 8,000 million transistors indicate a mature design, but the modest core count limits its appeal to specialized, low-thread-count environments.

Platform and Compatibility

The Intel Xeon Platinum 8256 uses the Intel Socket 3647 platform, a server-grade socket designed for scalable Xeon processors. It is built on the Cascade Lake architecture, specifically the Cascade Lake-SP variant, and is part of the Xeon Platinum generation. The processor supports DDR4 memory with ECC enabled, which is critical for data integrity in server and workstation environments, although the fact pack does not specify memory bus width or maximum capacity. The 14 nm process node and 8,000 million transistor count place it in the same generation as other Cascade Lake-SP parts, which share a common platform infrastructure. The processor does not include integrated graphics, meaning a discrete GPU is mandatory for any display output. PCIe support is not specified in the fact pack, so no claims can be made about lane counts or versions. The 105 W TDP is relatively modest for a Platinum SKU, which simplifies cooling requirements compared to higher-end Xeons that often exceed 200 W; a capable air cooler or entry-level server heatsink should suffice, though the platform’s socket 3647 mounting mechanism requires server-specific coolers. The processor is multiplier-unlocked, indicated by the `multiplierUnlocked` field set to false, so overclocking is not possible; clock speeds are fixed at 3.80 GHz base and 3.90 GHz boost. The part number is SRF94CD8069504194701, and it was released on December 10, 2018. The upgrade path is constrained to other Socket 3647 processors, which includes the broader Cascade Lake-SP Xeon lineup — users could theoretically move to higher-core-count Xeons on the same platform, but the fact pack does not list specific compatible models. ECC memory support is confirmed, which is a differentiator from consumer platforms and essential for error-sensitive workloads. No integrated graphics and no PCIe details mean that platform compatibility must be assessed based on the socket and memory support alone, which are standard for the server segment.

FAQ

Q: What is the core and thread count of the Intel Xeon Platinum 8256?

A: The processor has 4 cores and 8 threads, which is unusually low for a Xeon Platinum part.

Q: Does the Intel Xeon Platinum 8256 support ECC memory?

A: Yes, ECC memory support is enabled, which is critical for server and workstation data integrity.

Q: What socket does the Intel Xeon Platinum 8256 use?

A: It uses Intel Socket 3647, a server-grade socket for scalable Xeon processors.

Q: What is the boost clock speed of the Intel Xeon Platinum 8256?

A: The boost clock speed is 3.90 GHz, with a base clock of 3.80 GHz.

Q: Is the Intel Xeon Platinum 8256 overclockable?

A: No, the multiplier is locked, so overclocking is not supported.

Q: What is the L3 cache size on the Intel Xeon Platinum 8256?

A: The L3 cache is 16.5 MB shared across the four cores, providing roughly 4.1 MB per core.