Intel Core i7-860 vs Intel Core i7-875K

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Core i7-860 compared with Core i7-875K

	IntelCore i7-860	IntelCore i7-875K
Overview
Released
Released	September 2009	June 2010
Cores and clocks
Cores
Cores	4	4
Threads
Threads	8	8
Base clock
Base clock	2.8 GHz	2.93 GHz
Boost clock
Boost clock	3.46 GHz	3.6 GHz (better)
L3 cache
L3 cache	8 MB	8 MB
Cores
Cores	Four cores and eight threads with Hyper-Threading. Alphr’s exact review explicitly lists the clock multiplier as locked.	Four cores and eight threads with Hyper-Threading; unlocked multiplier confirmed in both exact reviews.
Clocks
Clocks	2.80 GHz base; up to 3.46 GHz with one core active, 3.33 GHz with two and 2.93 GHz with four, per Intel’s exact embedded brief. Intel’s 8 September 2009 launch states availability that day and names the 860 in its table.	2.93 GHz base and up to 3.60 GHz Turbo Boost. Intel’s exact comparison chart gives Q2 2010. The 28 May review/announcement precedes the June retail availability documented by AKIBA PC Hotline; month precision is retained because a maker-confirmed first-sale day was not found.
Cache
Cache	8 MB shared L3 cache.	8 MB shared L3 cache.
Graphics and AI
Built-in graphics
Built-in graphics	No	No
Graphics
Graphics	Intel’s exact-model comparison chart lists no processor graphics.	Intel’s exact-model chart lists no processor graphics.
Platform
Socket
Socket	LGA1156	LGA1156
Base power
Base power	95 W	95 W
Unlocked
Unlocked	No	Yes
Cooler in the box
Cooler in the box	–	No
Memory support
Memory support	Two channels of DDR3-1066/1333 in Intel’s exact embedded product brief.	DDR3-1333 rated maximum in Intel’s exact chart; two-channel memory confirmed by bit-tech’s exact review.
PCIe
PCIe	16 PCIe 2.0 lanes, configurable as one ×16 or two ×8 links; DMI connects the chipset, according to Intel’s launch and embedded brief.	16 PCIe 2.0 lanes in PC Perspective’s exact-model review introduction.
Process
Process	45 nm; Lynnfield. Intel’s launch names the P55 platform.	45 nm; Lynnfield.
Cooler
Cooler	–	The exact Newegg listing and contemporary AKIBA PC Hotline retail report confirm that the boxed model has no cooler.