Intel Xeon 6756P-B: specs and benchmarks

Summary

Intel started Xeon 6756P-B sales 1 October 2025. This is a desktop processor primarily aimed at professional systems. It has 64 cores and 128 threads, and is based on Intel 3 manufacturing technology, with a maximum frequency of 3500 MHz and a locked multiplier.

Compatibility-wise, this is a processor with a TDP of 325 Watt. It supports DDR5 memory.

Primary details

Xeon 6756P-B processor market type (desktop or notebook), architecture, sales start time and pricing.

Place in the ranking	not rated
Place by popularity	not in top-100
Market segment	Server
Designer	Intel
Release date	1 October 2025 (recently)

Detailed specifications

Basic microprocessor parameters such as number of cores, number of threads, base frequency and turbo boost clock, lithography, cache size and multiplier lock state. These parameters can generally indicate CPU performance, but to be more precise you have to review its test results.

Physical cores	64 (Tetrahexaconta-Core)
Performance-cores	64	of 72 (Xeon 6776P-B)
Threads	128
Base clock speed	2.2 GHz	of 4.7 GHz (FX-9590)
Boost clock speed	3.5 GHz	of 6.2 GHz (Core i9-14900KS)
Bus rate	0 GT/s
L3 cache	256 MB	of 1152 MB (EPYC 9684X)
Chip lithography	Intel 3 nm	of 3 nm (Apple M3 Max 16-Core)
Maximum core temperature	85 °C	of 110 °C (Atom x7-E3950)
64 bit support	+

Compatibility

Information on Xeon 6756P-B compatibility with other computer components and devices: motherboard (look for socket type), power supply unit (look for power consumption) etc. Useful when planning a future computer configuration or upgrading an existing one. Note that power consumption of some processors can well exceed their nominal TDP, even without overclocking. Some can even double their declared thermals given that the motherboard allows to tune the CPU power parameters.

Power consumption (TDP)

325 Watt

of 500 Watt (Xeon 6960P)

Technologies and extensions

Technological capabilities and additional instructions supported by Xeon 6756P-B. You'll probably need this information if you require some particular technology.

Instruction set extensions	Intel® SSE4.2, Intel® AVX, Intel® AVX2, Intel® AVX-512, Intel® AMX
AES-NI	+
Enhanced SpeedStep (EIST)	-
QuickAssist	+
Speed Shift	-
Turbo Boost Technology	2.0
Hyper-Threading Technology	+
Deep Learning Boost	+

Security technologies

Processor technologies aimed at improving security, for example, by protecting against hacks.

TXT	+
EDB	+
SGX	Yes with Intel® SPS

Virtualization technologies

Supported virtual machine optimization technologies. Some are specific to Intel only, some to AMD.

VT-d	+
VT-x	+
EPT	+

Memory specs

Types, maximum amount and channel number of RAM supported by Xeon 6756P-B's memory controller. Depending on the motherboard, higher memory frequency may be supported.

Supported memory types	DDR5
Maximum memory size	2.25 TB	of 6 TiB (EPYC 9124)
Max memory channels	8	of 12 (Xeon Platinum 9221)
ECC memory support	+

Peripherals

Specifications and connection types of supported peripherals.

PCIe version	Gen4, Gen5	of 5.0 (Core i9-12900K)
PCI Express lanes	48	of 144 (Threadripper PRO 7955WX)
Integrated LAN	+

Benchmark performance

Single-core and multi-core benchmark results of Xeon 6756P-B. Overall benchmark performance is measured in points in 0-100 range, higher is better.

---

---