Intel Core i5-6600K vs Intel Core i7-5775C

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Core i5-6600K compared with Core i7-5775C

	IntelCore i5-6600K	IntelCore i7-5775C
Overview
Released
Released	August 2015	June 2015
Cores and clocks
Cores
Cores	4	4
Threads
Threads	4	8 (better)
Base clock
Base clock	3.5 GHz	3.3 GHz
Boost clock
Boost clock	3.9 GHz (better)	3.7 GHz
L3 cache
L3 cache	6 MB	6 MB
Cores
Cores	Skylake; four cores without Hyper-Threading; unlocked multiplier confirmed in Intel's Gamescom release	Four cores with Hyper-Threading; Intel Turbo Boost 2.0 supported. CPU multiplier overclocking is confirmed by PC Gamer and PCWorld.
Clocks
Clocks	–	Maximum turbo is a single-core frequency. Intel also publishes a 37 W configurable TDP-down mode at a 2.2 GHz base frequency. Intel's June 2015 driver notes describe the model as newly launched; Velocity Micro offered systems immediately in June, while PC Gamer reported delayed availability of separately boxed processors.
Graphics and AI
Built-in graphics
Built-in graphics	Yes	Yes
Graphics
Graphics	Intel HD Graphics 530; maker clocks 350 MHz base and 1.15 GHz maximum dynamic clock, rather than differing launch-review figures	Intel Iris Pro Graphics 6200; 300 MHz base, up to 1.15 GHz; 128 MB eDRAM; three displays; Quick Sync Video. DisplayPort up to 3840×2160 at 60 Hz; HDMI up to 4096×2304 at 24 Hz.
Platform
Socket
Socket	LGA1151	LGA1150
Base power
Base power	91 W	65 W
Unlocked
Unlocked	Yes	Yes
Cooler in the box
Cooler in the box	No	–
Memory support
Memory support	Up to 64 GB; two channels; DDR4-1866/2133 or DDR3L-1333/1600 at 1.35 V; maximum bandwidth 34.1 GB/s; no ECC support	Up to 32 GB; two channels; DDR3L-1333/1600 at 1.5 V, as Intel specifies; 25.6 GB/s maximum bandwidth; ECC not supported.
PCIe
PCIe	16 CPU lanes; PCIe 3.0	PCIe 3.0; 16 CPU lanes, configured as 1×16, 2×8 or 1×8+2×4.
Chipsets
Chipsets	LGA1151 Skylake platform; Intel's 5 August 2015 release names the 6600K boxed processor and systems as available immediately	–
Process
Process	14 nm	14 nm; Broadwell; 37.5 × 37.5 mm package.
Cooler
Cooler	Intel lists no included heatsink; a separate cooler is required, despite the bundled-cooler implication in Expert Reviews	LGA1150 motherboard support depends on the board and BIOS. PC Gamer's firmware difficulties concern its early engineering sample and do not establish a fault in every retail processor.