Intel Core i7-4770K vs Intel Core i7-4820K

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Core i7-4770K compared with Core i7-4820K

	IntelCore i7-4770K	IntelCore i7-4820K
Overview
Released
Released	June 2013	September 2013
Cores and clocks
Cores
Cores	4	4
Threads
Threads	8	8
Base clock
Base clock	3.5 GHz	3.7 GHz
Boost clock
Boost clock	3.9 GHz	3.9 GHz
L3 cache
L3 cache	8 MB	10 MB (better)
Cores
Cores	Four cores with Hyper-Threading; Intel Turbo Boost 2.0 supported. The unlocked multiplier is confirmed by Expert Reviews and TechRadar. Current Intel specifications list TSX and VT-d as unsupported.	Ivy Bridge-E; 4 cores with Hyper-Threading. The unlocked multiplier is confirmed by the exact-model reviews.
Clocks
Clocks	Maximum turbo is a single-core frequency; sustained clocks depend on cooling and motherboard settings. Intel's June 2013 availability notice and Puget Systems' June launch lineup establish the sale month; they do not establish a worldwide first-sale day.	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.
Graphics and AI
Built-in graphics
Built-in graphics	Yes	No
Graphics
Graphics	Intel HD Graphics 4600; 350 MHz base, up to 1.25 GHz; three displays; Quick Sync Video.	No processor graphics, confirmed by Intel’s exact-model comparison-chart row; a separate graphics solution is required.
Platform
Socket
Socket	LGA1150	LGA2011
Base power
Base power	84 W	130 W
Unlocked
Unlocked	Yes	Yes
Cooler in the box
Cooler in the box	–	No
Memory support
Memory support	Up to 32 GB; two channels; DDR3-1333/1600 and DDR3L-1333/1600 at 1.5 V; 25.6 GB/s maximum bandwidth; ECC not supported.	Up to 64 GB; four channels of DDR3-1333/1600/1866; maximum bandwidth 59.7 GB/s; no ECC.
PCIe
PCIe	PCIe 3.0; 16 CPU lanes, configured as 1×16, 2×8 or 1×8+2×4.	40 CPU lanes; PCIe 3.0
Chipsets
Chipsets	–	X79 and LGA2011, confirmed by the exact-model reviews.
Process
Process	22 nm; Haswell; 37.5 × 37.5 mm package; 72.72°C maximum case temperature, not junction temperature.	22 nm; Ivy Bridge-E. Package size 52.5 × 45.0 mm.
Cooler
Cooler	Requires an LGA1150 motherboard; earlier LGA1155 processors use a different socket. No separate maximum turbo-power figure is published in the current Intel specifications.	Intel explicitly excludes a fan and heatsink from the boxed product; a separate compatible cooler is required.