Intel Core i7-4790K vs Intel Core i7-5820K

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Core i7-4790K compared with Core i7-5820K

	IntelCore i7-4790K	IntelCore i7-5820K
Overview
Released
Released	June 2014	August 2014
Cores and clocks
Cores
Cores	4	6 (better)
Threads
Threads	8	12 (better)
Base clock
Base clock	4 GHz	3.3 GHz
Boost clock
Boost clock	4.4 GHz (better)	3.6 GHz
L3 cache
L3 cache	8 MB	15 MB (better)
Cores
Cores	Four cores with Hyper-Threading; Intel Turbo Boost 2.0 supported. The current maker page lists Transactional Synchronization Extensions as unsupported, superseding early review specifications.	Haswell-E; six cores with Hyper-Threading; unlocked multiplier and lack of integrated graphics confirmed by exact-model reviews
Clocks
Clocks	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	Yes	No
Graphics
Graphics	Intel HD Graphics 4600; 20 execution units; 350 MHz base, up to 1.25 GHz; three displays; Quick Sync Video. HDMI up to 3840×2160 at 24 Hz; DisplayPort and eDP up to 3840×2160 at 60 Hz; VGA up to 1920×1200 at 60 Hz.	–
Platform
Socket
Socket	LGA1150	LGA2011-v3
Base power
Base power	88 W	140 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 or DDR3L-1333/1600 at 1.5 V, as listed by Intel; 25.6 GB/s maximum bandwidth; ECC not supported.	Up to 64 GB; four channels; DDR4-1600/1866/2133; maximum bandwidth 68 GB/s; no ECC support
PCIe
PCIe	PCIe 3.0; 16 CPU lanes, configured as 1×16, 2×8 or 1×8+2×4.	28 CPU lanes; PCIe 3.0
Chipsets
Chipsets	–	X99 and LGA2011-v3, as distinguished by Intel's Core i7 comparison chart and exact-model reviews. August release month follows Intel's 29 August family availability notice and contemporary exact-model stock coverage; an exact maker-SKU first-sale day was not established.
Process
Process	22 nm; Devil's Canyon, a Haswell refresh; 37.5 × 37.5 mm package; 74.04°C Tcase limit, not a junction-temperature limit. New polymer thermal interface and additional capacitors, described in Intel's Computex launch coverage and the exact-model reviews.	22 nm; package size 52.5 × 45 mm
Cooler
Cooler	Intel lists both ordinary boxed and explicitly fanless boxed SKUs; cooler contents should be checked for the particular package. Compatible Intel 8- and 9-series chipsets require the appropriate motherboard BIOS. Intel's June 2014 fact sheet confirms volume availability that month; the announcement itself is not used as the on-sale day.	Intel explicitly excludes a fan and heatsink from the boxed product; a separate cooler is required