Intel Core i5-750 vs Intel Core i7-875K

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Core i5-750 compared with Core i7-875K

	IntelCore i5-750	IntelCore i7-875K
Overview
Released
Released	September 2009	June 2010
Cores and clocks
Cores
Cores	4	4
Threads
Threads	4	8 (better)
Base clock
Base clock	2.66 GHz	2.93 GHz
Boost clock
Boost clock	3.2 GHz	3.6 GHz (better)
L3 cache
L3 cache	8 MB	8 MB
Cores
Cores	Four cores and four threads; Hyper-Threading is absent. TechRadar's exact Core i5-750 overclocking guide confirms the CPU multiplier is locked; base-clock overclocking remains possible.	Four cores and eight threads with Hyper-Threading; unlocked multiplier confirmed in both exact reviews.
Clocks
Clocks	Up to 3.20 GHz Turbo Boost. Intel's embedded product brief specifies 3.20 GHz with one or two active cores and 2.80 GHz with four; actual behaviour depends on workload, cooling and platform limits.	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.
Graphics and AI
Built-in graphics
Built-in graphics	No	No
Graphics
Graphics	No processor graphics; Intel's desktop comparison chart lists graphics as not applicable. A separate graphics solution is required.	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. Optional maximum memory capacity and bandwidth are omitted because the retired exact-model specification page could not be read.	DDR3-1333 rated maximum in Intel’s exact chart; two-channel memory confirmed by bit-tech’s exact review.
PCIe
PCIe	16 processor PCIe 2.0 lanes, configurable as one ×16 or two ×8 graphics links. A separate DMI link connects the processor to the chipset.	16 PCIe 2.0 lanes in PC Perspective’s exact-model review introduction.
Process
Process	45 nm; Lynnfield, based on the Nehalem architecture.	45 nm; Lynnfield.
Cooler
Cooler	LGA1156 platform, distinct from LGA775 and LGA1366. Intel's 8 September 2009 notice names the 750 and says the new processors and P55 chipset are available that day. Cooler inclusion and package temperature are omitted where maker evidence is unavailable.	The exact Newegg listing and contemporary AKIBA PC Hotline retail report confirm that the boxed model has no cooler.