Intel Core i5-2500K vs Intel Core i5-750

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Core i5-2500K compared with Core i5-750

	IntelCore i5-2500K	IntelCore i5-750
Overview
Released
Released	January 2011	September 2009
Cores and clocks
Cores
Cores	4	4
Threads
Threads	4	4
Base clock
Base clock	3.3 GHz	2.66 GHz
Boost clock
Boost clock	3.7 GHz (better)	3.2 GHz
L3 cache
L3 cache	6 MB	8 MB (better)
Cores
Cores	Four cores without Hyper-Threading; Intel Turbo Boost 2.0 and VT-x supported; VT-d not supported.	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.
Clocks
Clocks	Maximum turbo is a single-core frequency. The multiplier is unlocked, but motherboard support and cooling determine available overclocking; the original H67 platform does not support CPU multiplier overclocking.	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.
Graphics and AI
Built-in graphics
Built-in graphics	Yes	No
Graphics
Graphics	Intel HD Graphics 3000; 850 MHz base, up to 1.10 GHz; two displays; Quick Sync Video. Available display outputs and access to integrated graphics depend on the motherboard.	No processor graphics; Intel's desktop comparison chart lists graphics as not applicable. A separate graphics solution is required.
Platform
Socket
Socket	LGA1155	LGA1156
Base power
Base power	95 W	95 W
Unlocked
Unlocked	Yes	No
Memory support
Memory support	Up to 32 GB; two channels; DDR3-1066/1333; 21 GB/s maximum bandwidth as published by Intel; ECC not supported.	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.
PCIe
PCIe	PCIe 2.0; up to 16 CPU lanes. Motherboard support determines available slot configurations.	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.
Process
Process	32 nm; Sandy Bridge; 37.5 × 37.5 mm package; 72.6°C Tcase limit, not a junction-temperature limit.	45 nm; Lynnfield, based on the Nehalem architecture.
Cooler
Cooler	LGA1155-compatible cooling required. Intel's 5 January 2011 announcement gives 9 January availability for quad-core systems; APH Networks' contemporaneous exact-model review also identifies 9 January as the processor's release date.	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.