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3570k OC and ASRock Bios Questions

post #1 of 5
Thread Starter 
Hey guys, been awhile. Got myself a new 3570k, coming from my old Phenom II 1090t. I have it stable at 4.5Ghz with ~1.280 vcore (I'm in the process of getting it stable at lower voltages).

My questions: I think I have a pretty big OC wall. To get this to boot at 4.6ghz I had to pump around ~1.4v to get it to boot and it still was not very stable. I've hit a oc wall, but none this drastic before and from what I have read this CPU *should* be able go higher with minimal effort. Any suggestions or does this sound like it's it for my chip?

Also, when my OC is unstable, my BIOS becomes unstable. It will sometimes work or it will freeze, sometimes I'm lucky enough to get to and change the clock speed before it freezes. I have never had this problem with a BIOS before, is this a UEFI issue? (This is my first UEFI BIOS I've overclocked on.)

I've got some more questions (dealing with all the intel powersaving options after a stable OC) but will get to them at a more appropriate time so I don't flood with questions.

As always, any help or comments is appreciated. Thanks.
Andromeda
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Andromeda
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post #2 of 5
It is normal for the Ivy (and Sandy) chips to hit a pretty significant wall like you are seeing. I would just stick with 4.5 at the 1.28V as that is a nice overclock. If you can't even boot into Windows at 4.6, then you can try enabling Internal PLL Overvoltage and see if that helps - it can sometimes help you get through the wall for another couple of multipliers.

As for power saving, once you have your overclock dialed in you should switch to an offset voltage instead of fixed, and then enable all the power saving (EIST, C1E, C3 and C6). If you run into problems with the offset voltage causing crashes at idle or on resuming from sleep you can disable C3 and C6 - but you shouldn't have any problems with EIST and C1E.
post #3 of 5
Thread Starter 
Thanks for your suggestions. I read about the PLL Voltage and will give that a try when I feel like going farther. Have you had any problems with the BIOS locking up like I described? That's new to me.

Was there a calculation to find your offset voltage or is it just trial and error? Is EIST a option? I don't think I have seen that in the BIOS anywhere, just the other C States.
Andromeda
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Andromeda
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CPUMotherboardGraphicsRAM
i5-3570k [4.5Ghz] Z77X-UP5TH EVGA GTX 670FTW Corsair Vengeance 4x4 16GB 
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Samsung 7200 500GB Samsung 830 120GB  Corsair H100 Windows 8.1 x64 
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Samsung 27'' P2770 K90 Corsair HX850W Carbide 500R 
MouseMouse PadAudioAudio
M95 Vespula Maverick Audio Tubemagic D1 DAC/AMP AKG K550 Headphones  
Audio
Schiit Modi/Magni  
CPUMotherboardRAMHard Drive
A8-3850 ASUS F1A75-M PRO Kingston HyperX 1866 9-10-9-24-1  Samsung 7200 500GB 
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post #4 of 5
I've never experienced BIOS lockups before, although I have had issues with the board getting stuck in reboot loops with too high an overclock. So it's possible it is related.

EIST should be an option, it is short for Enhanced Intel Speedstep Technology, I'm not sure what the actual name is in ASRock.

You can calculate the offset if you want, or just use trial and error. The Vcore is just the chip VID plus the offset, so if you know the Vcore you need for stability (say 1.3V) and you know the VID, which you can read from Coretemp or Realtemp under load (say 1.25V), then just subract the VID from the Vcore to get your offset (so 1.3-1.25=0.05). That works fairly well, although you normally have to go back in and tweak it a little.

The trial and error method is to just set a small offset, say +0.005V, and then boot up and put a load on the system. See what voltage that delivers (say 1.255V) and then go back into the BIOS and change the offset (so add 0.045 to what you already had to get to 1.3V, in this example) so the end result is the Vcore you need.

I prefer the second method, since you are always dealing with actual voltages and don't have to worry about the accuracy of the VID reporting or the effect of LLC. ASRock actually has two offsets (offset and additional turbo voltage) instead of the normal one so it's a little different for those boards.

You can check this thread, which is specific to ASRock boards, for more info on their specific BIOS:

http://www.overclock.net/t/1198504/complete-overclocking-guide-sandy-bridge-ivy-bridge-asrock-edition/0_20
post #5 of 5
Thread Starter 
Thanks for your help. Got a stable offset set. I already had that link bookmarked smile.gif

One more question, whats the best way to go about getting trader rep? I have a few things I'd like to sell.
Andromeda
(18 items)
 
   
CPUMotherboardGraphicsRAM
i5-3570k [4.5Ghz] Z77X-UP5TH EVGA GTX 670FTW Corsair Vengeance 4x4 16GB 
Hard DriveHard DriveCoolingOS
Samsung 7200 500GB Samsung 830 120GB  Corsair H100 Windows 8.1 x64 
MonitorKeyboardPowerCase
Samsung 27'' P2770 K90 Corsair HX850W Carbide 500R 
MouseMouse PadAudioAudio
M95 Vespula Maverick Audio Tubemagic D1 DAC/AMP AKG K550 Headphones  
Audio
Schiit Modi/Magni  
CPUMotherboardRAMHard Drive
A8-3850 ASUS F1A75-M PRO Kingston HyperX 1866 9-10-9-24-1  Samsung 7200 500GB 
OSMonitorKeyboardPower
Win 8 x64 ASUS VE247H Razer Lycosa Corsair TX650 
CaseMouse
LIAN LI PC-V351 Razer Deathadder 
  hide details  
Reply
Andromeda
(18 items)
 
   
CPUMotherboardGraphicsRAM
i5-3570k [4.5Ghz] Z77X-UP5TH EVGA GTX 670FTW Corsair Vengeance 4x4 16GB 
Hard DriveHard DriveCoolingOS
Samsung 7200 500GB Samsung 830 120GB  Corsair H100 Windows 8.1 x64 
MonitorKeyboardPowerCase
Samsung 27'' P2770 K90 Corsair HX850W Carbide 500R 
MouseMouse PadAudioAudio
M95 Vespula Maverick Audio Tubemagic D1 DAC/AMP AKG K550 Headphones  
Audio
Schiit Modi/Magni  
CPUMotherboardRAMHard Drive
A8-3850 ASUS F1A75-M PRO Kingston HyperX 1866 9-10-9-24-1  Samsung 7200 500GB 
OSMonitorKeyboardPower
Win 8 x64 ASUS VE247H Razer Lycosa Corsair TX650 
CaseMouse
LIAN LI PC-V351 Razer Deathadder 
  hide details  
Reply
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