Intel Core i7-3770K vs Intel Core i7-4770K

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Core i7-3770K compared with Core i7-4770K

	IntelCore i7-3770K	IntelCore i7-4770K
Overview
Released
Released	April 2012	June 2013
Cores and clocks
Cores
Cores	4	4
Threads
Threads	8	8
Base clock
Base clock	3.5 GHz	3.5 GHz
Boost clock
Boost clock	3.9 GHz	3.9 GHz
L3 cache
L3 cache	8 MB	8 MB
Cores
Cores	Four cores with Hyper-Threading; Intel Turbo Boost 2.0. TechRadar confirms the unlocked multiplier.	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.
Clocks
Clocks	Maximum turbo is a single-core frequency. Intel announced systems available on 23 April and boxed processors later that month; the 29 April retail sale date comes from Ars Technica's update quoting Newegg.	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.
Graphics and AI
Built-in graphics
Built-in graphics	Yes	Yes
Graphics
Graphics	Intel HD Graphics 4000; 650 MHz base, up to 1.15 GHz; three displays; Quick Sync Video.	Intel HD Graphics 4600; 350 MHz base, up to 1.25 GHz; three displays; Quick Sync Video.
Platform
Socket
Socket	LGA1155	LGA1150
Base power
Base power	77 W	84 W
Unlocked
Unlocked	Yes	Yes
Memory support
Memory support	Up to 32 GB; two channels; DDR3-1333/1600; 25.6 GB/s maximum bandwidth; ECC not supported.	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.
PCIe
PCIe	PCIe 3.0; configurations up to 1×16, 2×8 or 1×8+2×4.	PCIe 3.0; 16 CPU lanes, configured as 1×16, 2×8 or 1×8+2×4.
Process
Process	22 nm; Ivy Bridge; 37.5 × 37.5 mm package; 67.4°C maximum case temperature, not junction temperature.	22 nm; Haswell; 37.5 × 37.5 mm package; 72.72°C maximum case temperature, not junction temperature.
Cooler
Cooler	LGA1155 motherboard compatibility depends on chipset and firmware; Expert Reviews advises confirming older 6-series board support with the motherboard maker. Intel's current specifications give no separate maximum turbo-power figure.	Requires an LGA1150 motherboard; earlier LGA1155 processors use a different socket. No separate maximum turbo-power figure is published in the current Intel specifications.