Intel Xeon 6756P-B

Intel Xeon 6756P-B is a 64-core, 128-thread server processor built on Intel’s Granite Rapids architecture, fabricated on a 5 nm process. It operates with a base clock of 2.20 GHz and a boost clock of 3.50 GHz, placing it in the upper tier of Intel’s Xeon 6 lineup. The processor carries a TDP of 325 W, which signals substantial cooling and power delivery requirements. With no benchmark scores or nearest rivals listed in the data, the analysis below relies strictly on the architectural specifications, memory configuration, and platform details provided.

Benchmark Performance

The FACT PACK lists no benchmark scores, no average score, and no nearest rival entries for the Intel Xeon 6756P-B. Consequently, direct performance comparisons against other CPUs cannot be quantified. The processor’s percentile versus all CPUs is exactly 50, which indicates that in the absence of measured data, it sits at the median of the reference database — but this figure is a placeholder, not a result of testing. Benchmark results for this SKU are unavailable, so any statement about its speed relative to competitors would be speculative.

What the data does reveal is the theoretical compute ceiling. With 64 cores and 128 threads, the processor is designed for heavily parallel workloads. The 2.20 GHz base clock and 3.50 GHz boost clock suggest a wide frequency range, allowing it to scale down for efficiency or ramp up for burst workloads. The L3 cache is 256 MB shared, which is substantial for a server chip, and each core has 2 MB of L2 cache plus 112 KB of L1 cache. These cache hierarchies are typical of a Granite Rapids part, intended to keep data close to the cores for high-throughput tasks.

Because no rival scores or delta percentages are provided, the data cannot confirm whether this processor leads or trails its direct competitors. The absence of benchmark entries means the database has not yet recorded any measured performance. In this state, the only defensible claim is that the architecture and core count position it for multi-threaded throughput, but without numbers, no relative performance verdict can be made. The percentile value of 50 is a neutral marker, not a performance endorsement.

Power and Thermals

The Intel Xeon 6756P-B carries a TDP of 325 W. This is a high-power classification, typical of a flagship server processor with 64 active cores. The thermal design power implies that a capable air cooler will not suffice; this chip requires a robust server-grade cooling solution, such as a high-end heatsink with strong airflow or a liquid cooling loop, depending on chassis design. The 325 W figure also dictates the power delivery subsystem: a motherboard must supply stable current across all cores under sustained load, and the system’s power supply must accommodate the peak draw.

The process node is 5 nm, which is Intel’s own fabrication, and the die size is listed as 2x 598 mm² — a dual-die configuration. This large silicon area, combined with the high TDP, indicates that heat dissipation is a critical design constraint. The base clock of 2.20 GHz is relatively low for a modern chip, which may serve to keep thermals manageable at full load, while the 3.50 GHz boost clock provides headroom for shorter bursts. In a server environment, the cooling tier implied by 325 W is not optional: it is a mandatory requirement for sustained operation without throttling.

Benchmark results for power consumption are not available, so no efficiency metrics can be derived. The data shows no thermal throttling behavior or power draw under load. The only concrete thermal fact is the TDP itself, which classifies this processor for high-performance computing racks with dedicated cooling infrastructure. For a workstation or server builder, the 325 W TDP means planning for high static pressure fans, large heatsinks, and potentially liquid cooling in dense enclosures.

Who Should Consider It

The Intel Xeon 6756P-B is aimed squarely at server and workstation workloads that can exploit 64 cores and 128 threads. Given the data, the strongest use cases are multi-threaded compute tasks: database processing, virtualization hosts, scientific simulations, and large-scale data analytics. The 256 MB L3 cache and eight-channel DDR5 memory support (409.6 GB/s bandwidth) are well-suited for memory-bound applications that require high throughput per core.

For gaming, this processor is not a practical choice. The 2.20 GHz base clock is low for gaming workloads, which typically favor high single-thread performance over core count. While the 3.50 GHz boost clock helps, the absence of integrated graphics and the server-oriented platform (BGA 5026, soldered) make it incompatible with consumer gaming boards. The data shows no gaming-specific benchmarks, so no frame-rate claims can be made.

For content creation, the picture is mixed. Video rendering and 3D animation tools that scale across many cores would benefit from the 64-core layout, but the low base clock could hurt lightly threaded tasks like photo editing or audio processing. The memory bandwidth of 409.6 GB/s is a strong asset for large file manipulation and real-time effects. Office productivity is overkill: this chip is designed for sustained heavy loads, not bursty document work, and the 325 W TDP makes it inefficient for such tasks.

Workload recommendations must be grounded in the provided scores, which are absent. Therefore, the guidance is architectural: choose this processor for multi-threaded, memory-intensive server roles, and avoid it for latency-sensitive single-threaded applications.

FAQ

Q: How many cores and threads does the Intel Xeon 6756P-B have?

A: It has 64 cores and 128 threads, based on simultaneous multithreading.

Q: What is the boost clock speed?

A: The boost clock is 3.50 GHz, while the base clock is 2.20 GHz.

Q: What memory type and bandwidth does it support?

A: It supports DDR5 memory with an eight-channel bus, providing 409.6 GB/s of memory bandwidth. ECC memory is supported.

Q: What socket does this processor use?

A: It uses the Intel BGA 5026 socket, which is a soldered (non-LGA) package, indicating a non-upgradable motherboard attachment.

Q: Is there an integrated GPU?

A: No integrated graphics are listed in the data; this is a CPU-only server part.

Q: What is the TDP and what cooling does it require?

A: The TDP is 325 W, which implies a high-end server cooling solution, not a standard air cooler.

Platform and Compatibility

The Intel Xeon 6756P-B is built for the Intel BGA 5026 socket, a ball-grid-array package that is soldered directly to the motherboard. This means the CPU is not user-replaceable or upgradeable; the platform is fixed at purchase time. The socket compatibility dictates that this is a server or workstation board, not a consumer desktop platform. The processor supports PCIe Gen 5 with 32 lanes from the CPU, which is sufficient for high-speed storage and accelerators, though the lane count is modest relative to some server chips.

Memory support is DDR5, running across an eight-channel bus with a total bandwidth of 409.6 GB/s. ECC memory is supported, which is essential for error-sensitive server workloads. The eight-channel configuration is a high-end feature, providing ample memory capacity and throughput for large datasets. The cache hierarchy includes 256 MB of shared L3, 2 MB of L2 per core, and 112 KB of L1 per core, which collectively reduce memory latency and improve data locality.

The platform is based on the Granite Rapids architecture, part of the Xeon 6 generation (Granite Rapids-D). The process is Intel’s 5 nm node, and the die is a dual-die design with a total area of 2x 598 mm². The production status is active, meaning it is currently manufactured. The upgrade path is limited by the BGA socket: there is no socket-based upgrade option, so any future CPU change requires a full motherboard replacement. PCIe Gen 5 support ensures compatibility with modern SSDs and GPUs, but the 32-lane count is the only PCIe specification provided.

Single-Thread vs Multi-Thread Behavior

The Intel Xeon 6756P-B exhibits a clear split between multi-threaded capability and single-thread performance. With 64 cores and 128 threads, the multi-threaded potential is enormous, but the base clock of 2.20 GHz is low, capping per-core performance. The boost clock of 3.50 GHz provides a 59% increase over base, which helps single-threaded bursts, but the sustained single-thread speed is limited by the thermal and power envelope of 325 W.

The data shows a large L3 cache (256 MB), which benefits multi-threaded workloads by reducing contention for memory access. In contrast, single-threaded tasks rely more on clock speed and cache latency; the 2.20 GHz base is not competitive with high-clock consumer chips. The memory bandwidth of 409.6 GB/s is a multi-threaded asset, as it allows many cores to feed data simultaneously, but it does not improve single-thread latency.

Real-world implications: multi-threaded workloads like compiling large codebases, running virtual machines, or processing scientific data will see near-linear scaling across the 64 cores. Single-threaded workloads, such as legacy database queries or general-purpose office applications, will be constrained by the modest base clock and may not benefit from the core count. The absence of benchmark scores means no precise single-thread vs multi-thread delta can be cited, but the architectural specs alone indicate that this processor is optimized for throughput over latency. For any workload that cannot use more than a few cores, the 325 W TDP is a poor trade-off, as the energy is spent on idle cores.