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First OC results, I5-750, Questions

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Last response: in Overclocking
August 27, 2010 6:58:10 PM

So I've just finished OCing my 750 to 3.6 ghz.

Here are the results.

I left the CPU Multiplier on Auto so I still had Turbo Boost Enabled. I have the frequency set to 171, multiplied by 21 comes to just over 3.6 ghz. Everything is good except my dram Frequency is only 1370 mhz. I had a choice of 1710 mhz but the memory I have is 1600 mhz. Wasn't sure if I should go over 1600 mhz. I'm also wondering if there is a better way to OC it so I reach 1600 mhz. Like I had an idea to try 200 x 18. Wonder if that would be better? Or perhaps I could lower my timings and keep the memory at 1370?
I left PCI-E at 100 and QPI on Auto.

My memory is this

I already set the Dram timings properly in Bios.

Is everything else fine? I notice the voltage increased to 1.344 and the temps look pretty high using primenet on P95. I'm using a Hyper 212+ for cooler. P7P55D EVO mobo. Should I have updated bios before OCing? I was also concerned about core 0 being higher than the others. Is this normal for quad core? On idle Core 0 and 2 seem to hover around 35C while Core 1 and 3 are around 30-31C.

More about : results 750 questions

August 27, 2010 11:23:02 PM

I noticed in some guides that the voltages were around 1.25-1.26 for running 3.6 ghz. So I limited my voltage with the same setting to 1.26. Ran fine for 10 to 20 minutes. Temps dropped to low 60s to mid 60s on the hottest core.

Then I looked at a couple other guides and decided to try x19 multiplier at 190 frequency. Same voltage. The difference in temps so far is amazing. On idle my cores were fluctuating in low to mid 20s. The CPU temp is running hotter than the cores now. On load the temps are only running at low 50s to mid 50s now. That's a 10 degree drop. I'm guessing that's good and better than a x21 multiplier.

Memory is also running closer to 1600 mhz now, at 1530ish mhz.