Definitely something to think about before you start to overclock.Wa_emtcontenttype: "emtcontenttype:donotuse/webpage/landingpage", the power consumption all of a sudden is 184 Watts and thus is costing us an additional 64 Watts. When we stress the 2 (4 threaded) CPU cores 100% at default we peak at roughly 120 Watts. We put this to the test by monitoring power consumption with the processor at its default settings and then overclocked to 4.2 GHz. What a lot of you do not realize is that overclocking a processor will consume more wattage. Okay, check this out then: Power Consumption Mind you that overclocking will draw more power from your system. Overclocking itself, it is a pretty easy thing to achieve with this processor. Proper cooling can get you much higher, we feel. Now again, I can't stress this hard enough, this was done with the stock Intel cooler. When we stress the CPU cores with Prime 95, temperatures now rise to roughly 73 Degrees C (163F) which really is okay but also roughly the maximum limit you want to go to. At 4 GHz on the air cooler we easily boot into Windows.Lower memory multiplier to maximum stable memory frequency at maximum memory frequency.Increase processor voltage a little bit to 1.30v.So we were able to overclock the Core i5 661 processor to 4.2 GHz on the stock Intel air cooler (!). Just play around with CPU voltage and even on the stock air cooler you can achieve some pretty snazzy results. Of course, if you have an Extreme Edition processor, things would be much easier as they have unlocked multipliers unfortunately this is not the case with today's launched processors.Īll processors released today are multiplier locked, meaning you select the highest possible multiplier and then increase the base clock in the BIOS or Windows tweaking software that comes along with your motherboard. In the BIOS you'll find a 133 MHz register, labeled the base clock - look at that as your 'FSB' to play around with. It's a little weird but the concept remains the same. The overclock results you will see today are thus based on the P55 eVGA Classified 200 - with the H55 motherboard from Intel, you'd have absolutely no chance whatsoever with the overclock experience you are about to see.Įver since we met the Nehalem family of processors the Front Side Bus was officially annihilated, things tend to change a little in the overclocking department. And luckily my contact was able to provide one. So we decided to give eVGA a call and see if they would have a beta BIOS available for their P55 based eVGA Classified 200. And it's okay, the board is just not designed for that kind of user. The base clock can be tweaked but there are no voltage, memory, timings or multiplier/divider controls available. Okay so first off, overclocking with the reference H55 motherboard was a horrible experience as the BIOS offers no real tweaking options whatsoever.
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