| Product | Core i5-6600K | Core i7-7800X X-series |
| Brand | Intel | Intel |
| Street Price (Approx) | ~ $225 Search low Core i5-6600K price (Amazon) | ~ $345 Search low Core i7-7800X X-series price (Amazon) |
| # CPU Cores | 4 | 6 |
| Frequency (GHz) | 3.5 GHz | 3.5 GHz |
| Cache (MB) | 6 | 8.25 |
| TDP (Watts) | 91 W | 140 W |
| Product Segment | Desktop | Desktop |
| Status | Released | Released |
| Announced On | 2015-06-01 | 2017-03-01 |
| Technicals | Core i5-6600K | Core i7-7800X X-series |
| Dimensions (2D) | 37.5x37.5 mm | |
| Conflict Free? | 1 | 1 |
| # CPU Cores | 4 | 6 |
| Threads/Core | 4 | 12 |
| Frequency (GHz) | 3.5 GHz | 3.5 GHz |
| Turbo Frequency (GHz) | 3.9 GHz | 4 GHz |
| Cache (MB) | 6 | 8.25 |
| Instructions Width (bits) | 64 | 64 |
| Instructions Extensions | SSE4.1/4.2, AVX 2.0 | SSE4.1/4.2, AVX 2.0, AVX-512 |
| Lithography Process (nm) | 14 nm | 14 nm |
| TDP (Watts) | 91 W | 140 W |
| Max RAM | 64 GB | 128 GB |
| RAM Types | DDR4-1866/2133, DDR3L-1333/1600 @ 1.35V | DDR4-2400 |
| # Memory Channels | 2 | 4 |
| Memory Bandwidth (GB/Sec) | 34.1GB/s | |
| Max CPU / Package | 1 | 1 |
| PCI-E Version | 3 | 3 |
| PCI-E Configurations | Up to 1x16, 2x8, 1x8+2x4 | |
| PCI-E Max Lanes # | 16 | 28 |
| Compatible Sockets | FCLGA1151 | FCLGA2066 |
| Intel Turbo Boost Version | 2 | 2 |
| Intel V-Pro | No | |
| Intel Hyper-Thread | No | Yes |
| Intel Virtualization (VTX) | Yes | Yes |
| Intel Directed I/O (VTD) | Yes | Yes |
| Intel Ext. Page Tables (EPT) | Yes | |
| Intel TSX Sync. Extensions | Yes | |
| Intel 64 | Yes | Yes |
| Idle States | Yes | |
| Enhanced Speedstep | Yes | |
| Thermal MonitoringTech. | Yes | |
| Intel ID Protect | Yes | |
| Intel SIPP | No | |
| Intel SMB Advantage | Yes | |
| Intel AES New Instructions | Yes | Yes |
| Intel Secure Key | Yes | |
| Intel OS Guard | Yes | |
| Trusted Execution | No | |
| Execution Disable | Yes | Yes |