This article covers インテル CPU BX8070811600K シール付き Corei5-11600K 6コア 3.90 GHz LGA1200 5xxChipset 125W【日本正規流通品】.

Overview

Intel's 11th-gen Rocket Lake-S architecture powers the Core i5-11600K, a LGA1200 processor designed for gamers and enthusiasts who want strong single-threaded performance without breaking the bank. With 6 cores and 12 threads running at a base clock of 3.9GHz and a boost clock reaching 4.9GHz, this CPU delivers excellent responsiveness in games, productivity tasks, and light content creation. The 12MB Intel Smart Cache and 125W TDP allow the i5-11600K to outpace many previous-generation chips in IPC (instructions per clock) and raw frequency. It includes Intel UHD Graphics 750 for basic display output, though a discrete GPU is recommended for gaming. Overclocking support on Z590 motherboards lets you push beyond stock speeds, making it a versatile choice for PC builders.

Compatibility Guide

The Core i5-11600K fits the LGA1200 socket and works with Intel 400 and 500 series chipset motherboards (Z490, B460, H410, Z590, B560, H510). However, always check the motherboard vendor's CPU support list for BIOS compatibility before purchase. Memory: DDR4-3200 dual-channel, up to 128GB. XMP profiles are supported on Z590 and B560 for memory overclocking. Power Supply: A 650W PSU is recommended for a mid-range gaming build pairing this CPU with a GPU like the RTX 3060 or RX 6600. For higher-end GPUs, consider 750W+. Cooling: The 125W TDP requires a capable aftermarket cooler. A high-end air cooler (e.g., Noctua NH-D15) or a 240mm liquid cooler is ideal for sustained loads and overclocking. Chipset: PCIe 4.0 support is available on Z590, B560, and H570 motherboards; Z490 requires a specific board revision. Ensure your motherboard supports PCIe 4.0 if you plan to use a Gen4 SSD or GPU.

Product Info

Released in March 2021, the Intel Core i5-11600K remains a solid mid-range option even in 2026. Its current street price hovers around ¥36,575 (~$250 USD) on retail channels. Intel provides a 3-year warranty for boxed processors, and the Japanese authorized distribution seal assures genuine product. Market positioning: Mid-high tier. It competes directly with AMD's Ryzen 5 5600X but offers an integrated GPU, slightly higher single-core boost, and PCIe 4.0 support out of the box. While not the latest generation, its performance in gaming and general tasks is still very competitive, especially at this price point.

Best Use Cases

1080p/1440p Gaming: The i5-11600K's high boost clock and strong single-core performance make it excellent for CS:GO, Valorant, Fortnite, and AAA games at High settings. For 4K gaming, consider shifting budget to a higher-end GPU instead. Budget-Conscious Builder: Pairing this CPU with a B560 board and 16GB DDR4-3200 keeps total platform cost low while delivering great gaming performance. A capable upgrade from older i5-8400 or i7-7700K builds. Temporary iGPU User: If you're waiting for GPU prices to drop or can't afford a dedicated card now, the UHD Graphics 750 lets you handle basic browsing, office work, and media playback without a discrete GPU. Not Ideal For: Heavy multi-threaded workloads like 4K video rendering, 3D rendering, or software compilation. For those tasks, a Ryzen 7 5800X or Intel Core i7-11700K would offer better performance.

Things to Consider

The LGA1200 platform is a dead end: you cannot upgrade to 12th-gen (Alder Lake) or later without replacing the motherboard. If you plan future upgrades, consider building on a newer platform. Also, the i5-11600K runs hot under load — the stock cooler is not included, and even a mid-range air cooler will struggle with sustained all-core loads. Finally, while its gaming performance is competitive, Ryzen 5 5600X often offers similar gaming FPS with lower power consumption. If you value efficiency, the AMD option might be more appealing. ## FAQ
Q: Is the Core i5-11600K good for streaming? A: It can handle 1080p60 streaming using CPU encoding (x264) on medium present if gaming at 60 FPS. For higher streaming quality or 1440p, use GPU-based NVENC encoding. Q: Can I use DDR4-3600 memory with this CPU? A: Yes, but only if your motherboard supports memory overclocking (Z590, B560, or Z490). The CPU officially supports DDR4-3200, but faster memory will work via XMP, often improving game performance. Q: Does the i5-11600K support Windows 11?

Product Disclosure (Amazon)

  • Manufacturer: インテル
  • Seller: Amazon US
  • Fulfilled by: Amazon US
  • ASIN: B08X67YZBL
  • Note: This article covers a manufacturer-made product based on Amazon listing details.