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Old January 17, 2010, 05:58 PM
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Default New i5 750 - First Overclock c/w Questions

I recently completed the build of my i5 750 system c/w ASUS P7P55D-E PRO mobo and 2x2Gb Patriot Extreme Viper II 1600Mhz memory.

I used this overclock guide at
http://www.overclock.net/intel-cpus/605848-i5-i7-lga-1156-overclocking-guide.html
It was a bit confusing for a newbie to OC to figure out where all the settings are and what they are called in the BIOS for my ASUS mobo.



CPU-Z shows the following:
  • Core Speed: 3826.6 Mhz
  • Multiplier: 20x
  • Bus Speed: 191.3 Mhz
  • QPI Link 3444 Mhz
One thing I am concerned about is the memory seems to be running at a low frequency. CPU-Z is showing the following:
  • DRAM Frequency: 574 Mhz
  • FSB:DRAM: 2:6
Am I correct in assuming that my memory frequency is actuall 2x754 = 1148 Mhz

What can I do to improve the memory frequency (Id like to get to at least 1333)? Can I change the FSB:DRAN ratio for example?

After running LinX 20 times RealTemp shows max. temps as 78 76 72 74C on the four cores.
Are those temps OK?
Im using a CM Hyper 212Plus cooler in an Antec 300 with standard case fans on medium speed.

==============
Here is what I did in the BIOS.



On the "Ai Tuner" tab:
  • CPU Core Voltage: 1.35v
  • IMC Voltage: 1.225v
  • CPU PLL Voltage: 1.8v
  • Ai Overclock Tuner: Manual
  • Intel Speedstep: Disabled
  • Intel TurboMode: Disabled
  • Blck Frequency: 191
  • DRAM Volatage: 1.65v
  • Also set the memory timings: 8-8-8-24
On the "Advanced" Tab:
  • Under "Configure advanced CPU settings"
  • C1E Support: Disabled
  • Intel Speedstep: Disabled
  • Intel C-State: Disabled

Comments/suggestions are requested and will be welcomed by this newcomer to overclocking.
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Old January 17, 2010, 06:02 PM
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My System Specs

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I ran my old i5 @ 1.31v 200mhz BCLK with the ram @ 8x to get 1600mhz effective. Cooling was the limiting factor with my old i5 so make sure you have a reallly good cooler, and dont be alarmed to see temps go into teh high 60s when stressing thats perfectly normal.

I had a gigabyte and Asus 1156 board and i used this exact guide, followed it to a T and then tweaked and modified to get my desired results.

bit-tech.net | Feature - Overclocking Intel's Core i5 750
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Old January 17, 2010, 06:07 PM
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Quote:
Originally Posted by Fudd Rucker View Post
I ran my old i5 @ 1.31v 200mhz BCLK with the ram @ 8x to get 1600mhz effective. Cooling was the limiting factor with my old i5
I also use 1.31 with 200 BCLK, if I remember well it was lower than 67'c when I was on a 212+
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Old January 17, 2010, 06:14 PM
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So it looks like I still need to do some work on my cooling since I saw temps into the high 70s.
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Old January 17, 2010, 06:22 PM
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Quote:
Originally Posted by trolleydriver View Post
So it looks like I still need to do some work on my cooling since I saw temps into the high 70s.
don't touch you 212+, look fine to me, your voltage is to high, I guess you use auto setting, asus are generous, they apply more volts so the board don't crash. did you add extra fan to your case
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Old January 17, 2010, 06:40 PM
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I've lowered the CPU voltage to 1.31 (I previously set it the the level recommended in the guide I followed).

Now with the two Antec fans on high and running LinX I'm seeing max temps of 72 70 66 68.

I'm not trying to become an overclock hero. I'll probably settle for something like a 3.6 Ghz. Right now I'm experimenting and trying not to blow things up.
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Old January 17, 2010, 06:44 PM
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better now ,,,,,,,are you still at 3,8 , this 1,31, is this in the BIOS or in CPUZ, I was refering to the CPUZ in my 1.31 volts
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Old January 17, 2010, 06:51 PM
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That 1.31 was in the BIOS.

CPUZ is showing Core Voltage at 1.296 to 1.304.

Still at 3.82 Ghz.
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Old January 17, 2010, 07:00 PM
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Looks like I'm not stable now because LinX has stopped twice on an error.

Also when LinX is running, CPUZ shows CPU Core Voltage is at 1.312v.
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Old January 17, 2010, 07:20 PM
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Not sure why LinX is stopping on errors.

I'm running Prime95 torture test. Seeing temps no higher than 59C across all cores.
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