Intel Core i5-6600K 3.5GHz Quad-Core LGA 1151 CPU (Used)

Upgrade your desktop build with the Intel Core i5-6600K — a dependable quad-core processor built on Intel's 14nm Skylake architecture. Whether you're refreshing an older system or building a budget-friendly workstation, this processor delivers solid multi-tasking performance with integrated graphics and dual-channel DDR3 memory support.

⚠️ Condition Notice: This is a used CPU. The processor may have slight surface scratches from prior use. Each unit is double-tested before shipping to ensure full functionality and reliable performance.

Note: The manufacturing origin of individual CPUs may vary (e.g., China, Malaysia, Vietnam, Costa Rica). All units are genuine Intel processors and perform identically regardless of origin. Units are assigned randomly.

Key Specifications

• Model: Intel Core i5-6600K
• Base Clock Speed: 3.5 GHz
• Cores / Threads: 4 Cores / 4 Threads
• Socket: LGA 1151
• Chip Process: 14nm Skylake
• L3 Cache: 6 MB
• TDP (Wattage): 91W
• PCIe Version: PCIe 3.0
• Integrated Graphics: Yes (Intel HD Graphics 530)
• Memory Support: Dual-Channel DDR3
• Stepping: SR2L4 / SR2BV
• Cooling System: Not included (aftermarket cooler required)
• Application: Desktop

Why Choose the Intel Core i5-6600K?

• ✅ Reliable Quad-Core Performance — Handles everyday computing, multitasking, and light creative workloads with ease
• ✅ LGA 1151 Socket Compatibility — Fits a wide range of Intel 100/200 series motherboards
• ✅ Built-In Intel HD Graphics — No dedicated GPU required for basic display output
• ✅ Tested Before Shipping — Every unit is double-verified for functionality before dispatch
• ✅ Value-Driven Upgrade — Get proven Intel Skylake performance at a budget-friendly price

Compatibility Notes

This processor is compatible with Intel LGA 1151 socket motherboards using 100-series (Z170, H170, B150) and 200-series (Z270) chipsets. Please verify your motherboard's CPU support list before purchasing. A compatible aftermarket CPU cooler is required — not included.

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Frequently Asked Questions

Q: Is the Intel Core i5-6600K compatible with Z270 motherboards?

A: Yes, the Intel Core i5-6600K uses the LGA 1151 socket and is compatible with both Intel 100-series (Z170, H170, B150) and 200-series (Z270) chipsets. Always check your specific motherboard's CPU compatibility list to confirm support.

Q: Does this used Intel i5-6600K CPU come with a cooler?

A: No, this listing does not include a CPU cooler. You will need to purchase a compatible aftermarket cooler separately. The i5-6600K has a 91W TDP, so a mid-range air cooler or better is recommended for stable operation.

Q: What memory type does the Intel Core i5-6600K support?

A: The Intel Core i5-6600K supports dual-channel DDR3 memory. Please ensure your motherboard and RAM are compatible with this configuration before completing your build.

Q: What does "used" condition mean for this CPU?

A: "Used" means the processor has been previously installed and may show slight surface scratches on the integrated heat spreader (IHS). Functionally, each unit is double-tested before shipping to verify it operates correctly and meets Intel specifications.

Production & Packaging Notice

To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.