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1156 i5-760 Overclocking Advice, Please.

post #1 of 30
Thread Starter 
Well, the i5 is in my sig's motherboard. I'm just curious as to how to approach this at the moment.

Initially, I checked what my stock voltages were (Leaving BIOS setting on Auto, then going to check what the voltage was reported in BIOS). This came back with it being 1.09something or rather.

Next thing I did was watch LinusTechTips' i5 overclocking guide. As following his instructions, I did a mild OC, only to 3.33GHz, and set the volts @ 1.1V.

I've also set my RAM speed down to 1480MHz from 1600MHz, to keep it under spec'd limits.

I'm just curious, what to do now? Continue by bumping Base Clock? Or change multiplier? Or both? Add voltage or not?

Thanks, OCN.
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post #2 of 30
Thread Starter 
Also: Currently running Prime for stability.
Core temps are hovering ~50C
CPU temp is hovering ~40C

Checking with HWMonitor and CoreTemp. Speed check with CPU-Z.
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post #3 of 30
Continue to raise the bclk, try and find a good number that works with your ram. Personally mine likes 200 x 20 then the 2:8 divider gives me 1600MHz on the ram..

Keep your VTT voltage within .05v of your ram. So if your ram is 1.65v, make sure your VTT is never lower than 1.15v... But you will need more for higher OC anyway... Probably in the 1.30v range for both the core & vtt for 4.0


LOL @ Taylor Swift
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post #4 of 30
Thread Starter 
Quote:
Originally Posted by 10acjed View Post
Continue to raise the bclk, try and find a good number that works with your ram. Personally mine likes 200 x 20 then the 2:8 divider gives me 1600MHz on the ram..

Keep your VTT voltage within .05v of your ram. So if your ram is 1.65v, make sure your VTT is never lower than 1.15v... But you will need more for higher OC anyway... Probably in the 1.30v range for both the core & vtt for 4.0


LOL @ Taylor Swift
Haha, thanks. Yeah, I'm a massive fanboi of her.

Just out of curiousity, what are the VID's of Core i5's? Or like, good VID's. I'm not that sure if it's still relevant nowadays, but it was on the old Core 2 Quads.

And I shall take aboard your advice. Will post updates soon
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post #5 of 30
Quote:
Originally Posted by Swift Castiel View Post
Haha, thanks. Yeah, I'm a massive fanboi of her.

Just out of curiousity, what are the VID's of Core i5's? Or like, good VID's. I'm not that sure if it's still relevant nowadays, but it was on the old Core 2 Quads.

And I shall take aboard your advice. Will post updates soon


VID = Default Voltage... So load optimized defaults, save & exit, go back into bios and it should show the default voltage...

The range is somewhere around 1.1 - 1.25... Mine is 1.224 and you can see in my sig what it needs to run at 4.0
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post #6 of 30
Thread Starter 
Quote:
Originally Posted by 10acjed View Post
VID = Default Voltage... So load optimized defaults, save & exit, go back into bios and it should show the default voltage...

The range is somewhere around 1.1 - 1.25... Mine is 1.224 and you can see in my sig what it needs to run at 4.0
Really? O.O
That's what I did as well, and my VID/Default Voltage on Auto was 1.09. And CPU-Z tells me at the moment I've got 1.088V on it at the moment. VDroop?
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post #7 of 30
Quote:
Originally Posted by Swift Castiel View Post
Really? O.O
That's what I did as well, and my VID/Default Voltage on Auto was 1.09. And CPU-Z tells me at the moment I've got 1.088V on it at the moment. VDroop?
CPU voltage is a bit of a guessing game:

CPUZ isn't completely accurate, vDroop is certainly a factor, and LLC pushes additional voltage under load.

Keep raising your Bclk until you can't boot, or are unstable. Then manually up the voltage.

When you reach 1.4v OR 80degrees or so while testing, you're done. Backoff a notch and it's set.

Make sure your ram is always running under or at your rated speed.
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post #8 of 30
Bios is a better way to tell as cpu-z as well as any other software will read after vdrop/vdroop


Software is fine when seeing what it idles/loads and what you need to be at for a stable OC...

But load optimized and save & exit. When you reboot back to bios you should see the default voltage aka VID

1.09 is a good default. You could probably hit 4.0 below 1.30v.... But your going to see some high temps if my theory is correct...

My theory - Low default voltage/VID = hotter running cpu....
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post #9 of 30
Thread Starter 
Okay, I decided to set the multiplier up to 20, and leave the base clock at 185. I also up'd the voltage to 1.15V. I have a question about the CPU VTT Voltage. Do I leave it at the previous 1.25? Or should I change it to something higher?

The 185 BLCK with the 20x multi brings it up to 3.7GHz.
RAM's still clocked at 1480MHz.
Running Prime now.
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post #10 of 30
Thread Starter 
Okay, so temps on the cores are all hovering around 55C. I'm just curious as Core #0 is hovering at 58C. Is it normal to have one core marginally hotter than the others? Or am I going to have do a reseat of my cooler with a reapplication of the TIM?
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