"Lynnfield" (45 nm)

• All models support: MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, Enhanced Intel SpeedStep Technology (EIST), Intel 64, XD bit (an NX bit implementation), TXT, Intel VT-x, Intel VT-d, Hyper-threading, Turbo Boost, Smart Cache.
• Core i7-875K features an unlocked multiplier and does not support Intel TXT and Intel VT-d..^[1]
• FSB has been replaced with DMI.
• Transistors: 774 million
• Die size: 296 mm²
• Stepping: B1

Model number	sSpec number	Frequency	Turbo	Cores	L2 cache	L3 cache	I/O bus	Mult.	Memory	Voltage	TDP	Socket	Release date	Part number(s)	Release price (USD)
Standard power
Core i7-860	SLBJJ (B1)	2.8 GHz	1/1/4/5[Note 1]	4	4 × 256 KB	8 MB	DMI	21×	2 × DDR3-1333	0.65–1.4 V	95 W	LGA 1156	September 2009	BV80605001908AK BX80605I7860	$284
Core i7-870	SLBJG (B1)	2.93 GHz	2/2/4/5	4	4 × 256 KB	8 MB	DMI	22×	2 × DDR3-1333	0.65–1.4 V	95 W	LGA 1156	September 2009	BV80605001905AI BX80605I7870	$562
Core i7-875K	SLBS2 (B1)	2.93 GHz	2/2/4/5	4	4 × 256 KB	8 MB	DMI	22×	2 × DDR3-1333	0.65–1.4 V	95 W	LGA 1156	May 2010	BV80605001905AM BX80605I7875K	$342
Core i7-880	SLBPS (B1)	3.07 GHz	2/2/4/5	4	4 × 256 KB	8 MB	DMI	23×	2 × DDR3-1333	0.65–1.4 V	95 W	LGA 1156	May 2010	BV80605002505AG BX80605I7880	$583
Low power
Core i7-860S	SLBLG (B1)	2.53 GHz	0/0/6/7	4	4 × 256 KB	8 MB	DMI	19×	2 × DDR3-1333	0.65–1.4 V	82 W	LGA 1156	January 2010	BV80605003210AD BX80605I7860S	$337
Core i7-870S	SLBQ7 (B1)	2.67 GHz	0/0/6/7	4	4 × 256 KB	8 MB	DMI	20×	2 × DDR3-1333	0.65–1.4 V	82 W	LGA 1156	July 2010	BX80605I7870S BV80605004494AB	$351