Intel Core i7-4820K vs Intel Core i7-6700K

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Core i7-4820K compared with Core i7-6700K

	IntelCore i7-4820K	IntelCore i7-6700K
Overview
Released
Released	September 2013	August 2015
Cores and clocks
Cores
Cores	4	4
Threads
Threads	8	8
Base clock
Base clock	3.7 GHz	4 GHz
Boost clock
Boost clock	3.9 GHz	4.2 GHz (better)
L3 cache
L3 cache	10 MB (better)	8 MB
Cores
Cores	Ivy Bridge-E; 4 cores with Hyper-Threading. The unlocked multiplier is confirmed by the exact-model reviews.	Four cores with Hyper-Threading; Intel Turbo Boost 2.0 supported.
Clocks
Clocks	Turbo Boost 2.0 up to 3.90 GHz. September availability follows Hardware Canucks’ contemporary report of widespread store availability and Intel’s Q3 2013 launch quarter; an exact maker first-sale day was not established.	Maximum turbo is a single-core frequency; overclocking requires an appropriate motherboard and cooling. Intel publishes TDP without a separate maximum turbo-power figure.
Graphics and AI
Built-in graphics
Built-in graphics	No	Yes
Graphics
Graphics	No processor graphics, confirmed by Intel’s exact-model comparison-chart row; a separate graphics solution is required.	Intel HD Graphics 530; 350 MHz base, up to 1.15 GHz; three displays; Quick Sync Video. DisplayPort and eDP up to 4096×2304 at 60 Hz; HDMI up to 4096×2304 at 24 Hz.
Platform
Socket
Socket	LGA2011	LGA1151
Base power
Base power	130 W	91 W
Unlocked
Unlocked	Yes	Yes
Cooler in the box
Cooler in the box	No	No
Memory support
Memory support	Up to 64 GB; four channels of DDR3-1333/1600/1866; maximum bandwidth 59.7 GB/s; no ECC.	Up to 64 GB; two channels; DDR4-1866/2133 or DDR3L-1333/1600 at 1.35 V; 34.1 GB/s maximum bandwidth; ECC not supported.
PCIe
PCIe	40 CPU lanes; PCIe 3.0	PCIe 3.0; 16 CPU lanes, configured as 1×16, 2×8 or 1×8+2×4. PC Gamer describes the Z170 platform's faster DMI 3.0 chipset link and expanded storage connectivity.
Chipsets
Chipsets	X79 and LGA2011, confirmed by the exact-model reviews.	–
Process
Process	22 nm; Ivy Bridge-E. Package size 52.5 × 45.0 mm.	14 nm; Skylake; 37.5 × 37.5 mm package; Intel lists a 64°C Tcase limit, which is a case-temperature specification rather than a junction-temperature limit.
Cooler
Cooler	Intel explicitly excludes a fan and heatsink from the boxed product; a separate compatible cooler is required.	Boxed processor includes no fan or heatsink. Requires a compatible Intel 100-series motherboard; the launch notice names the Z170 chipset for unlocked processors.