Intel Core 2 Duo E6600 vs Intel Core i5-6600K

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Core 2 Duo E6600 compared with Core i5-6600K

	IntelCore 2 Duo E6600	IntelCore i5-6600K
Overview
Released
Released	July 2006	August 2015
Cores and clocks
Cores
Cores	2	4 (better)
Threads
Threads	2	4 (better)
Base clock
Base clock	2.4 GHz	3.5 GHz
Boost clock
Boost clock	–	3.9 GHz
L3 cache
L3 cache	–	6 MB
Cores
Cores	Conroe; two cores and two threads, without Hyper-Threading.	Skylake; four cores without Hyper-Threading; unlocked multiplier confirmed in Intel's Gamescom release
Clocks
Clocks	Published operating frequency 2.40 GHz; 1066 MHz front-side bus. Intel unveiled the family on 27 July 2006 and said complete Core 2 Duo desktop systems would arrive in early August. TechSpot’s 2 August review says boxed CPUs began shipping late the previous week, supporting July CPU availability without an exact sale day. No unpublished boost figure is supplied.	–
Cache
Cache	4 MB shared L2 cache, as Intel’s datasheet states; no L3 figure supplied.	–
Graphics and AI
Built-in graphics
Built-in graphics	No	Yes
Graphics
Graphics	No integrated graphics, explicitly confirmed by the exact-model CPU-Monkey specification entry. Chipset graphics are separate from the processor.	Intel HD Graphics 530; maker clocks 350 MHz base and 1.15 GHz maximum dynamic clock, rather than differing launch-review figures
Platform
Socket
Socket	LGA775	LGA1151
Base power
Base power	65 W	91 W
Unlocked
Unlocked	–	Yes
Cooler in the box
Cooler in the box	Yes	No
Memory support
Memory support	Intel’s datasheet routes memory and I/O transactions through the front-side bus and chipset; memory types and capacity depend on the motherboard.	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
PCIe
PCIe	–	16 CPU lanes; PCIe 3.0
Chipsets
Chipsets	–	LGA1151 Skylake platform; Intel's 5 August 2015 release names the 6600K boxed processor and systems as available immediately
Process
Process	65 nm; Conroe; LGA775.	14 nm
Cooler
Cooler	Intel’s boxed-processor specification confirms an unattached fan heatsink. Published processor TDP is 65 W.	Intel lists no included heatsink; a separate cooler is required, despite the bundled-cooler implication in Expert Reviews