This article covers Intel インテル Core i9-9960X 16コア 3.1GHz LGA2066.
Overview
The Intel Core i9-9960X is a high-end processor from Intel's X-series family, featuring 16 cores and 32 threads for exceptional multi-threaded performance. With a base clock of 3.1GHz and a maximum Turbo Boost of 4.5GHz, it delivers solid single-core speed as well. Built on the LGA2066 socket, it supports quad-channel DDR4-2666 memory up to 128GB and provides 44 PCIe 3.0 lanes for extensive expansion. Targeted at enthusiasts and professionals, this 165W TDP CPU was released in October 2018 and represents one of Intel's top-tier desktop offerings at the time.
Compatibility Guide
The processor exclusively uses the LGA2066 socket and requires an Intel X299 chipset motherboard. Memory support includes DDR4-2666 in quad-channel configuration, with a maximum capacity of 128GB. XMP profiles are supported but overclocking may be limited by the memory controller. With 44 PCIe 3.0 lanes, it can handle multiple GPUs and NVMe SSDs simultaneously without bandwidth constraints. A dedicated CPU cooler is mandatory, as the processor ships without a fan. Given the 165W TDP, a high-end air cooler or liquid cooling solution is recommended. * A power supply of at least 850W is advised for a full system with a high-end GPU; more wattage needed for multiple GPUs.
Product Info
The Intel Core i9-9960X launched in October 2018 as part of the Skylake-X refresh, fabricated on Intel's 14nm process. It includes 22MB of L3 cache and a 165W TDP. Market positioning was at the high end of desktop processors, just below the 18-core i9-9980XE. Originally priced around ¥200,000 JPY, it has seen significant price drops; new units are available on Japan for approximately ¥7,980. Intel provides a standard 3-year warranty for retail boxed units.
Best Use Cases
Creative workloads: Video editing, 3D rendering, and software compilation benefit greatly from 16 cores and 32 threads, making this CPU ideal for professionals using multithreaded applications. Multi-GPU workstations: The 44 PCIe 3.0 lanes allow for two or three GPUs running at full x16, perfect for deep learning, scientific simulations, or GPU rendering farms. Budget-conscious high-performance builds: Due to its age and current low pricing, enthusiasts can build a powerful workstation at a fraction of the original cost, leveraging the high core count.
Things to Consider
Platform obsolescence: LGA2066 and X299 are outdated, offering no upgrade path to newer CPU generations. The motherboard and memory must be specifically for this socket. Single-thread performance lags behind modern CPUs like Core i5-13xxx or Ryzen 5 7000 series, so pure gaming builds may be better served by newer architectures. The 165W TDP generates substantial heat, requiring robust cooling. Power consumption and electricity costs are also higher than modern processors. PCIe 3.0 limitation means you cannot utilize the full speed of PCIe 4.0/5.0 SSDs or GPUs, which may affect future high-bandwidth devices. Stock of new units is limited; many listings are used or refurbished. Check product condition and warranty coverage before purchase.
