Intel · Core

Core i7-875K

Released June 2010

An unlocked four-core Lynnfield desktop processor with Hyper-Threading, dual-channel DDR3 and an LGA1156 socket.

Cores: 4/8
Boost: 3.6 GHz
L3: 8 MB
Power: 95 W
Socket: LGA1156

Unlocked

What reviewers say

Both reviews found strong all-round performance but little practical overclocking benefit from the unlocked multiplier with air cooling. TechRadar considered cheaper i5 models sufficient for gaming; bit-tech preferred the i7-930 for buyers willing to overclock. The multiplier adds flexibility, but neither saw it as a compelling reason to pay the premium.

From bit-tech.net and techradar.com

Specifications

Report a wrong or missing spec

Cores and clocks

Cores: 4
Threads: 8
Base clock: 2.93 GHz
Boost clock: 3.6 GHz
L3 cache: 8 MB
Cores: Four cores and eight threads with Hyper-Threading; unlocked multiplier confirmed in both exact reviews.
Clocks: 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: 8 MB shared L3 cache.

Graphics and AI

Built-in graphics: No
Graphics: Intel’s exact-model chart lists no processor graphics.

Platform

Socket: LGA1156
Base power: 95 W
Unlocked: Yes
Cooler in the box: No
Memory support: DDR3-1333 rated maximum in Intel’s exact chart; two-channel memory confirmed by bit-tech’s exact review.
PCIe: 16 PCIe 2.0 lanes in PC Perspective’s exact-model review introduction.
Process: 45 nm; Lynnfield.
Cooler: The exact Newegg listing and contemporary AKIBA PC Hotline retail report confirm that the boxed model has no cooler.

Pros and cons

Pros

Eight simultaneous threads
Unlocked multiplier
Dual-channel DDR3 memory

Cons

No integrated graphics
No boxed cooler
Requires an LGA1156 motherboard

Closest rivals

Model	Cores	Boost	L3	Power	Socket	Released
IntelCore i7-930	4/8	3.06 GHz	8 MB	130 W	LGA1366	Feb 2010
IntelCore i5-2500K	4/4	3.7 GHz	6 MB	95 W	LGA1155	Jan 2011
IntelCore i5-750	4/4	3.2 GHz	8 MB	95 W	LGA1156	Sept 2009

Sources

Photo: Newegg’s exact BX80605I7875K listing; generic Core i7 processor artwork without visible 875K model engraving.

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