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Questions regarding my "attempt" to overclock an I7 3770K

post #1 of 16
Thread Starter 
I know having a first post asking for help is begging to be flamed and told to search... However, If anyone would like to help me I would greatly appreciate it. Let me preface by saying I've spent a couple of days researching overclocking and read the Ivy Bridge overclocking guide over a few times. I was successful in getting 4.4ghz with v-core set at 1.22 and LLC/ v-droop set to auto. It proved stable through Intel Burn test on maximum (as well as prime 95 for a few hours. Temps seemed alright at <80 for IBT and <70 for Prime 95. My attempts to get a stable 4.5ghz have proven unsuccessful. With v-core set at 1.25 IBT crashed after the first 3 runs (out of 10). Temps were at 82 max during IBT. I ran prime 95 last night only to find the system in standby with Prime up but not running this morning (admittedly I'm not sure If I just didn't set it to run long enough). I attempted to manually set the LLC to the second to highest level to run Prime again while at work but immediately got a blue screen.

My questions are the following:
-My v-core in HWmonitor never approached what I had set in bios. When the v-core is discussed regarding overclocking (like in the ivy bridge overclocking guide) does this refer to what it is SET at or what it actually is? My v-core showed a max of 1.24 with it staying at 2.22 during the 3 runs of ITB at maximum. If I were to state what the v-core is at for my current overclock would I say the 1.25 its set at in bios or what it actually reads with the monitoring software?

-Before increasing the voltage in hopes of stability at 4.5ghz would it be recommended to attempt further LLC/ v-droop settings? If so are there any guides regarding how to go about setting it? My board has 7 levels.

-How much of a stability difference does turbo boost being enabled have?

Thank you for your help. Below are the system specs:

Processor: I7 3770k overclocked to 4.5ghz
CPU Cooling: Cooler Master Hyper 212 Plus
Motherboard: MSI Z77A-GD55
Ram: 16gb 1600mhz DDR3
Video Card: Radeon HD 7850
Primary Drive: 120gb SSD
Secondary Drives: 1X 3TB, 2X 1TB
Power Supply: OCZ 600 watt
Case: Cooling Master Haf X 942
Media Drive: LG 22x
Edited by BAD STI - 5/15/12 at 12:48pm
post #2 of 16
Quote:
Originally Posted by BAD STI View Post

I know having a first post asking for help is begging to be flamed and told to search... However, If anyone would like to help me I would greatly appreciate it. Let me preface by saying I've spent a couple of days researching overclocking and read the Ivy Bridge overclocking guide over a few times. I was successful in getting 4.4ghz with v-core set at 1.22 and LLC/ v-droop set to auto. It proved stable through Intel Burn test on maximum (as well as prime 95 for a few hours. Temps seemed alright at <80 for IBT and <70 for Prime 95. My attempts to get a stable 4.5ghz have proven unsuccessful. With v-core set at 1.25 IBT crashed after the first 3 runs (out of 10). Temps were at 82 max during IBT. I ran prime 95 last night only to find the system in standby with Prime up but not running this morning (admittedly I'm not sure If I just didn't set it to run long enough). I attempted to manually set the LLC to the second to highest level to run Prime again while at work but immediately got a blue screen.
My questions are the following:
-My v-core in HWmonitor never approached what I had set in bios. When the v-core is discussed regarding overclocking (like in the ivy bridge overclocking guide) does this refer to what it is SET at or what it actually is? My v-core showed a max of 1.24 with it staying at 2.22 during the 3 runs of ITB at maximum. If I were to state what the v-core is at for my current overclock would I say the 1.25 its set at in bios or what it actually reads with the monitoring software?
-Before increasing the voltage in hopes of stability at 4.5ghz would it be recommended to attempt further LLC/ v-droop settings? If so are there any guides regarding how to go about setting it? My board has 7 levels.
-How much of a stability difference does turbo boost being enabled have?
Thank you for your help. Below are the system specs:
Processor: I7 3770k overclocked to 4.5ghz
CPU Cooling: Cooler Master Hyper 212 Plus
Motherboard: MSI Z77A-GD55
Ram: 16gb 1600mhz DDR3
Video Card: Radeon HD 7850
Primary Drive: 120gb SSD
Secondary Drives: 1X 3TB, 2X 1TB
Power Supply: OCZ 600 watt
Case: Cooling Master Haf X 942
Media Drive: LG 22x

First, are you going manual or offset? I would up the LLC to 75%, reduce the PLL to about 1.6. If you're going manual try 1.25v with those changes. If that doesn't work, keep increasing by .005. When people refer to VCore, it's what you SET in the BIOS if using manual. Use CPU-Z, it's extremely accurate in that regards. Also, enable Turbo and see how that fares. Do one change at a time, though.
post #3 of 16
Thread Starter 
Quote:
Originally Posted by Nihilo View Post

First, are you going manual or offset? I would up the LLC to 75%, reduce the PLL to about 1.6. If you're going manual try 1.25v with those changes. If that doesn't work, keep increasing by .005. When people refer to VCore, it's what you SET in the BIOS if using manual. Use CPU-Z, it's extremely accurate in that regards. Also, enable Turbo and see how that fares. Do one change at a time, though.

Manual. I'm too much of a noob for offset at this point. LOL. I'll make the adjustments you recommended and try again. LLC at 75% would be closest to level 5 right? 5/7= 71.4%. Level 6 (85%) is what gave me a blue screen on start up.

Also. My current testing procedure is to run ITB on standard, ITB on maximum, then Prime 95 (assuming it passes each test). To me this seems the quickest approach without having to dedicate half a day to a test as ITB on standard/ maximum should expose any errors. However being complete newbie to all of this If my current method isn't the best advice would be appreciated. smile.gif


Thanks for all of your help!
Edited by BAD STI - 5/15/12 at 11:55am
post #4 of 16
Quote:
Originally Posted by BAD STI View Post

Manual. I'm too much of a noob for offset at this point. LOL. I'll make the adjustments you recommended and try again. LLC at 75% would be closest to level 5 right? 5/7= 71.4%. Level 6 (85%) is what gave me a blue screen on start up.
Also. My current testing procedure is to run ITB on standard, ITB on maximum, then Prime 95 (assuming it passes each test). To me this seems the quickest approach without having to dedicate half a day to a test as ITB on standard/ maximum should expose any errors. However being complete newbie to all of this If my current method isn't the best advice would be appreciated. smile.gif
Thanks for all of your help!

Yeah try lvl 5. If you're getting BSOD at start up, you just need to add more voltage more than likely. Try just increasing the VCore first and see if you can boot without a BSOD, then you know you're getting closer. IBT is good on standard, but even at maximum it doesn't run through all the tests. Prime95 has I think like 82 different tests it runs through? Something like that. And at 15 mins a test, it takes roughly 24 hours. If you change the intervals to 10 mins, it takes only like 18.
post #5 of 16
Thread Starter 
Quote:
Originally Posted by Nihilo View Post

Yeah try lvl 5. If you're getting BSOD at start up, you just need to add more voltage more than likely. Try just increasing the VCore first and see if you can boot without a BSOD, then you know you're getting closer. IBT is good on standard, but even at maximum it doesn't run through all the tests. Prime95 has I think like 82 different tests it runs through? Something like that. And at 15 mins a test, it takes roughly 24 hours. If you change the intervals to 10 mins, it takes only like 18.

At 1.25v it boots fine with LLC at default/ auto. I only got the BSOD when I manually set the LLC to 6. I'll try with 5 and see what happens.

Should I increase the turbo current limits as well or leave them for now? Just noticed this section of the guide:
Quote:
If you want the best results you should disable power saving options like I have below, however if you want the CPU frequency to drop under idle conditions, you should leave them enabled. You should also leave them enabled if you will use DVID Voltage offset instead of fixed voltage. If you decide to leave on power saving options, make sure that you increase the turbo current limits for the CPU within the turbo settings list to 200A and 300W to totally maximize Intel Turbo limits; however this might not be needed.
post #6 of 16
I've OC'd mine with and without setting the power/current higher, so might depend on the mobo.
Also I've never disabled any power saving except in Windows where I would say at minimum you set it for "performance" or whatever term MS uses. I don't think you need to disable sleep modes in Windows but I never use them except for monitor so not sure.
post #7 of 16
Quote:
Originally Posted by BAD STI View Post

At 1.25v it boots fine with LLC at default/ auto. I only got the BSOD when I manually set the LLC to 6. I'll try with 5 and see what happens.
Should I increase the turbo current limits as well or leave them for now? Just noticed this section of the guide:
Quote:
If you want the best results you should disable power saving options like I have below, however if you want the CPU frequency to drop under idle conditions, you should leave them enabled. You should also leave them enabled if you will use DVID Voltage offset instead of fixed voltage. If you decide to leave on power saving options, make sure that you increase the turbo current limits for the CPU within the turbo settings list to 200A and 300W to totally maximize Intel Turbo limits; however this might not be needed.

Definitely try different LLC levels then until one boots into Windows. Then start making adjustments as needed. I'm not completely sure about the turbo limits since my board I have it set to auto.
post #8 of 16
Thread Starter 
Quote:
Originally Posted by Nihilo View Post

Definitely try different LLC levels then until one boots into Windows. Then start making adjustments as needed. I'm not completely sure about the turbo limits since my board I have it set to auto.

Awesome thanks! If I can get the CPU overclock squared away tonight I'll be extremely happy. I can then move on to seeing why my ASUS GPU Tweak custom fan profiles aren't working or get afterburner to run instead of freeze. LOL
post #9 of 16
Thread Starter 
So all attempts at setting LLC were a failure at first then I started using the lower settings. Setting 1 proved the most stable. I guess it works the opposite of what I was thinking? I'm passing ITB fine in standard mode but prime is still crashing. With 1.26 volts at 4.5ghz v-droop at 1 prime doesn't run as long as it did at 1.25 volts 4.5ghz with v-droop at auto.... I'm going to up the voltage some more and if that doesn't work try with v-droop at 0.
post #10 of 16
Quote:
Originally Posted by BAD STI View Post

So all attempts at setting LLC were a failure at first then I started using the lower settings. Setting 1 proved the most stable. I guess it works the opposite of what I was thinking? I'm passing ITB fine in standard mode but prime is still crashing. With 1.26 volts at 4.5ghz v-droop at 1 prime doesn't run as long as it did at 1.25 volts 4.5ghz with v-droop at auto.... I'm going to up the voltage some more and if that doesn't work try with v-droop at 0.

Basically, how it works is the higher the LLC, the less of a gap between idle and load VCores. This is good when using an offset. Like in my case, I have a negative offset so it lowers my idle back down while keeping my VCore where it needs to be for stability.
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