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Complete Overclocking Guide: Sandy Bridge & Ivy Bridge | *ASRock Edition* - Page 732

Poll Results: Was this guide helpful?

Poll expired: Oct 17, 2012  
  • 80% (237)
    Yes (and I DO have an ASRock motherboard).
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post #7311 of 9531
Quote:
Originally Posted by Buffalo101 View Post

Can someone tell me why my motherboard (ASRock Pro3 Z77) doesn't allow fixed voltage? I'm pretty sure that it was an option before I updated my BIOS, but now I have Auto and Offset only.

I would really like to test fixed voltage because my Vcore is 1.3v when I run offset +0.005 at 4.2GHz. I can actually run 4.2GHz at auto voltage where it's only around 1.2v

I cant answer "why" specifically, something went wrong, and it could be due to many things. Did you flash from a USB stick? Did you reset BIOS before and after the flash? The general rule of flashing BIOS is "if you dont have to, you really dont want to", if there are not specific problems that are pointing you to a bios flash, best to leave it alone. try reverting back to the last BIOS.


All is not lost, as fixed voltage is not your end goal anyway right?

From where you are now, you could likely stabilize 4.5 with little more effort and forgo the trouble of reflashing BIOS, finding stable fixed, then converting to offset. To get a lower voltage, you can drop to a lower LLC, like 4 or 5, and use a negative offset voltage. For 4.2 you could probably go pretty deep into the negative and maintain stability.
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post #7312 of 9531
Quote:
Originally Posted by inedenimadam View Post

I cant answer "why" specifically, something went wrong, and it could be due to many things. Did you flash from a USB stick? Did you reset BIOS before and after the flash? The general rule of flashing BIOS is "if you dont have to, you really dont want to", if there are not specific problems that are pointing you to a bios flash, best to leave it alone. try reverting back to the last BIOS.


All is not lost, as fixed voltage is not your end goal anyway right?

From where you are now, you could likely stabilize 4.5 with little more effort and forgo the trouble of reflashing BIOS, finding stable fixed, then converting to offset. To get a lower voltage, you can drop to a lower LLC, like 4 or 5, and use a negative offset voltage. For 4.2 you could probably go pretty deep into the negative and maintain stability.

I'm completely green in OC'ing, but this guide explained how to update the BIOS and I did so. I don't think anything went bad. At least I didn't notice any errors during the install. Through a Google search it seems that other people also have the problem with no fixed voltage on their Pro3 boards.

Anyway, about the LLC. When you say levels, I'm getting a bit confused. In the BIOS there are only 100%, 75% and 0%. From what I have been able to learn, it seems that 100% gives least compensation and 0% most. Is that correct?
post #7313 of 9531
Quote:
Originally Posted by Buffalo101 View Post

Quote:
Originally Posted by inedenimadam View Post

I cant answer "why" specifically, something went wrong, and it could be due to many things. Did you flash from a USB stick? Did you reset BIOS before and after the flash? The general rule of flashing BIOS is "if you dont have to, you really dont want to", if there are not specific problems that are pointing you to a bios flash, best to leave it alone. try reverting back to the last BIOS.


All is not lost, as fixed voltage is not your end goal anyway right?

From where you are now, you could likely stabilize 4.5 with little more effort and forgo the trouble of reflashing BIOS, finding stable fixed, then converting to offset. To get a lower voltage, you can drop to a lower LLC, like 4 or 5, and use a negative offset voltage. For 4.2 you could probably go pretty deep into the negative and maintain stability.

I'm completely green in OC'ing, but this guide explained how to update the BIOS and I did so. I don't think anything went bad. At least I didn't notice any errors during the install. Through a Google search it seems that other people also have the problem with no fixed voltage on their Pro3 boards.

Anyway, about the LLC. When you say levels, I'm getting a bit confused. In the BIOS there are only 100%, 75% and 0%. From what I have been able to learn, it seems that 100% gives least compensation and 0% most. Is that correct?

I do not have that board, so I cant answer that. But a quick way to test would be to figure out which one gives the most vDroop. which you can calculate by taking the MAX vCore and subtracting the load Vcore. Since you are trying to lower VCore, you would want more Vdroop, which I am assuming would be 0% compensation, giving you less voltage under a constant load.
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post #7314 of 9531
Quote:
Originally Posted by inedenimadam View Post

I do not have that board, so I cant answer that. But a quick way to test would be to figure out which one gives the most vDroop. which you can calculate by taking the MAX vCore and subtracting the load Vcore. Since you are trying to lower VCore, you would want more Vdroop, which I am assuming would be 0% compensation, giving you less voltage under a constant load.

Thanks for the explanation, definitely learning something smile.gif Currently my LLC is set to 50% (I assumed that was a good middle ground) and my MAX Vcore in HWMonitor is 1.280v and the load is also 1.280v. Does that mean a Vdroop of 0?

I tried to do the negative offset and I'm now on -0.030v (4.2GHz) and it helps slightly on the temps. The hottest core has gone down from 90C to 86C... still insanely high for 4.2GHz I guess.

When I use the negative offset voltage, does that only effect load voltage or idle too?
post #7315 of 9531
Quote:
Originally Posted by Buffalo101 View Post

Quote:
Originally Posted by inedenimadam View Post

I do not have that board, so I cant answer that. But a quick way to test would be to figure out which one gives the most vDroop. which you can calculate by taking the MAX vCore and subtracting the load Vcore. Since you are trying to lower VCore, you would want more Vdroop, which I am assuming would be 0% compensation, giving you less voltage under a constant load.

Thanks for the explanation, definitely learning something smile.gif Currently my LLC is set to 50% (I assumed that was a good middle ground) and my MAX Vcore in HWMonitor is 1.280v and the load is also 1.280v. Does that mean a Vdroop of 0?

I tried to do the negative offset and I'm now on -0.030v (4.2GHz) and it helps slightly on the temps. The hottest core has gone down from 90C to 86C... still insanely high for 4.2GHz I guess.

When I use the negative offset voltage, does that only effect load voltage or idle too?

you should see some drop with 50% LLC, there might be more wrong with your BIOS flash than just a missing setting. I would highly suggest pulling the battery/unplug power, and flashing back one or two BIOS updates, or at minimum re flashing the current one.

Also, you can go further into the negative with offset, the only caveat is that going too low will affect your stability at idle. 1.280 should also be enough for 4.4 or 4.5 or maybe more, changing to those multipliers wont change your voltage/heat at all.
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post #7316 of 9531
Quote:
Originally Posted by inedenimadam View Post

you should see some drop with 50% LLC, there might be more wrong with your BIOS flash than just a missing setting. I would highly suggest pulling the battery/unplug power, and flashing back one or two BIOS updates, or at minimum re flashing the current one.

Also, you can go further into the negative with offset, the only caveat is that going too low will affect your stability at idle. 1.280 should also be enough for 4.4 or 4.5 or maybe more, changing to those multipliers wont change your voltage/heat at all.

I went to -0.060 and one of the cores started failing during Small FFTs test in prime95. Also I tried bumping the multiplier but then the system crashed when it loaded Windows.

When you say flashing the BIOS, do you mean to update it to the newest one from ASRock? I'm not expert at BIOS updates, so obviously I didn't keep a backup of the original :/
post #7317 of 9531
Quote:
Originally Posted by Buffalo101 View Post

Quote:
Originally Posted by inedenimadam View Post

you should see some drop with 50% LLC, there might be more wrong with your BIOS flash than just a missing setting. I would highly suggest pulling the battery/unplug power, and flashing back one or two BIOS updates, or at minimum re flashing the current one.

Also, you can go further into the negative with offset, the only caveat is that going too low will affect your stability at idle. 1.280 should also be enough for 4.4 or 4.5 or maybe more, changing to those multipliers wont change your voltage/heat at all.

I went to -0.060 and one of the cores started failing during Small FFTs test in prime95. Also I tried bumping the multiplier but then the system crashed when it loaded Windows.

When you say flashing the BIOS, do you mean to update it to the newest one from ASRock? I'm not expert at BIOS updates, so obviously I didn't keep a backup of the original :/

I mean, reflash the one you have, but first pull the battery and the power chord and let the last bit of juice leak out so it forces a BIOS reset. You dont want to flash over an overclock, you want to flash over a default BIOS.

Edit to add: if your chip is having stability issues at 4.2 with 1.26, you should probably just stabilize 4.2 with as low of voltage as possible, or upgrade your cooling before pushing higher. It sounds like it might be a volt hungry chip, with voltage comes heat, and you are close to that threashold already.
Edited by inedenimadam - 10/30/13 at 2:18pm
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post #7318 of 9531
Changed it too +.004 for the turbo and doing +.015 for the offset at 4.5 ghz
been running a prime 95 test for 30 mins and this is where everythings staying do u think i have more streaching room if i want it does everything look okay.
post #7319 of 9531
Quote:
Originally Posted by Dunsparth View Post

Changed it too +.004 for the turbo and doing +.015 for the offset at 4.5 ghz
been running a prime 95 test for 30 mins and this is where everythings staying do u think i have more streaching room if i want it does everything look okay. Warning: Spoiler! (Click to show)

I think that is a solid looking overclock, voltage is good for keeping that chip around a long time, and your temperature is in the comfort zone for sure. 4.5 is a nice overclock for daily use. The law of diminishing returns accelerates heavily if you go much higher.
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post #7320 of 9531
This picture was taken at 1 hour of prime 95 while doing other things on the PC browsing the web lol.
seems like its good so i think ill keep it here.


Thanks for all the help.
i stream and play games so i think ill stay here should be good enough for what i do.
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