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Test setup

CPU: Core i5-750 @ 2.66ghz
Motherboard: ASUS Maximus III Gene P55
RAM: 4gb Kingston HyperX DDR3
HDD: 250gb WD 7200rpm SATA HDD
Optical drive: LG Bluray/HDDVD Multidrive
CPU cooler: Coolermaster Hyper TX3
PSU: Hiper Type-R 580w
Case: Lian Li V350

Overclocking

The Core i5-750 proved to clock very nicely. The Maximus III Gene provided a stable base from which to get some very impressive performance boosts.
Using Intel’s P55 chipsets 'CPU Level Up' function the chip achieved 3.2ghz at the 'Extreme' setting.

As that proved stable some manual clocking was needed.

It turned out to be a simple job – i altered some basic settings (multipler to 21x - bus speed to 190mhz) and upped the CPU's core voltage to 1.33v. Doing this returned a 4ghz clock speed... a 50% overclock.


4ghz CPU-Z.

Yes the chip i tested was an engineering sample but from my experience the vast majority of Core, i5 and i7 chips clock very well.

Of course depending on the chip you may end up needing a touch more voltage but ultimately 4ghz should be achievable with decent cooling and a nice motherboard.

Temperatures were also good.


CPU temps at all three clock speeds.

Vortez Hardware - PC Hardware News and Reviews » Articles » Intel Core i5-750 Processor Review » Page 3