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The ULTIMATE Sandy Bridge OC Guide + P67A-UD7 Performance Review - Page 54

post #531 of 702
7/27/11 at 6:56am
Quote:
Originally Posted by Wek View Post
Can someone let me know if I have an absolutely awful chip or if something else needs to be looked at?

Just running off vcore and OC, the only way I can get my 2500 stable at 44x is to set vcore to 4.15 which will read 1.380 in the MIT page. Loading optimized setting defaults my vcore to 1.26, seems much higher than a lot of the ones I've seen.

Furthermore, HW Monitor is consistently giving a vcore in the low 1.3's, usually 1.30-1.32 regardless of what BIOS says.
You need to pay attention to what the voltage is while under 100% load. 1.3V while under load isn't terrible (but it's not great for 4.4GHz). If you want the load voltage to resemble the voltage set in BIOS, you need to enable LLC.
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post #532 of 702
7/27/11 at 11:11am
Quote:
Originally Posted by compudaze View Post
You need to pay attention to what the voltage is while under 100% load. 1.3V while under load isn't terrible (but it's not great for 4.4GHz). If you want the load voltage to resemble the voltage set in BIOS, you need to enable LLC.
The problem I'm having is reading the voltage under load, which is either incorrect or I'm having an issue with my board (z68x ud3h). For example, no matter the vcore I set in BIOS (even with the 1.415v I mentioned earlier, which reads as 1.38 on the MIT page), HW Monitor will still drop as low as 1.26 at times under load. The max I've had HW Monitor display is 1.37v, which lasted a few seconds, dropped to <1.3, and BSOD.

I have attempted disabling all power saving/state features, as well as upping TCP/TDP to 300 and trying to get any sort of stable using Turbo. Even at the 1.415v vcore 45x crashes within 10-15seconds on IntelBurnIn on high. I've tried various levels of LLC at various temperatures, and at one point of another vcore in HW Monitor still drops to <1.3 under load.

Is it possible my motherboard is the issue, and while it is stable on defualt speeds, cannot hold a higher voltage consistently?

Also in regard to VID, if my vcore defualts to 1.26, but on the MIT page BIOS reads CPU @ 1.224, would my VID be 1.26 or 1.224? Is 1.26 the load the CPU is expected to request @ 100% load? Numbers were taken with power saving states disabled.

EDIT: I think I will try setting up TouchBios tonight to try to get a definite reading of vcore under load. Also EasyTune has been uninstalled for all the previous vcore settings in case it is considered a possible reason for the problems.
Edited by Wek - 7/27/11 at 11:22am
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post #533 of 702
7/27/11 at 1:51pm
Thread Starter 
Quote:
Originally Posted by Wek View Post
The problem I'm having is reading the voltage under load, which is either incorrect or I'm having an issue with my board (z68x ud3h). For example, no matter the vcore I set in BIOS (even with the 1.415v I mentioned earlier, which reads as 1.38 on the MIT page), HW Monitor will still drop as low as 1.26 at times under load. The max I've had HW Monitor display is 1.37v, which lasted a few seconds, dropped to <1.3, and BSOD.

I have attempted disabling all power saving/state features, as well as upping TCP/TDP to 300 and trying to get any sort of stable using Turbo. Even at the 1.415v vcore 45x crashes within 10-15seconds on IntelBurnIn on high. I've tried various levels of LLC at various temperatures, and at one point of another vcore in HW Monitor still drops to <1.3 under load.

Is it possible my motherboard is the issue, and while it is stable on defualt speeds, cannot hold a higher voltage consistently?

Also in regard to VID, if my vcore defualts to 1.26, but on the MIT page BIOS reads CPU @ 1.224, would my VID be 1.26 or 1.224? Is 1.26 the load the CPU is expected to request @ 100% load? Numbers were taken with power saving states disabled.

EDIT: I think I will try setting up TouchBios tonight to try to get a definite reading of vcore under load. Also EasyTune has been uninstalled for all the previous vcore settings in case it is considered a possible reason for the problems.
have you updated your BIOS?

Also what does Easytune6 report your vcore as?
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post #534 of 702
7/27/11 at 3:27pm
Quote:
Originally Posted by Sin0822 View Post
have you updated your BIOS?

Also what does Easytune6 report your vcore as?
BIOS is latest version for this model, F4. I installed TouchBios and am reading the vcore through that. HW Monitor Pro appears to be accurate and reports similar numbers.

I've messed around with LLC up to level 5. These results are with level 1. The voltages for idle/load I'm reading from the TouchBios PC Status menu for vcore. I'm loading with IntelBurnIn @ High and running 5 passes to get a general idea of stability.

4.0ghz
vcore set to 1.34v
1.30v idle.
1.20 - 1.22v load.
Max Temp - 63C

4.1ghz
vcore set to 1.34v
1.30v idle
1.20 - 1.22v load.
Max temp - 64C

4.2ghz
vcore set to 1.34v
1.30v idle
1.19-1.22v load.
Max temp - 64?
-- BSOD 0x124 (vcore from what I've read) after 2 passes

So a few questions regarding these results:
1) At 4.1ghz for example, assuming I was definitely stable (>5runs), would I be able to assume my 2500K is stable 41x @ 1.20-1.22V? Or would I go off the vcore I set, 1.34V? The latter seems extremely high.

2) What is going on with the vdrop/droop? Set 1.34v -> 1.20v under load? What is lowering the voltage so much? It also seems the vcore I set is more reflective of the temps than the vcore reading (A70 push/pull, well ventilated case, properly mounted/pipe gaps filled).
Edited by Wek - 7/27/11 at 3:29pm
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post #535 of 702
7/27/11 at 4:26pm
zek,

hwinfo64 has no bugs with sandy bridge unlike other sensor monitoring apps. try it out.

it helped me a great deal to first find the auto vcore value.
level 7 seems to work best with me without pll overvolt. personally, all i did was set level 7, manual dram voltage and qpi/vtt to 1.08 and set vcore on auto until it booted to desktop. that was a solid starting point considering. for me it was 45x. so i took the bios reading for the automatic vcore at 45x and then inputted the same value manually. when intelburn test was fine for 5 passes on very high, i'd raise the multiplier until it barfed 0x101. then i raised vcore by 2 increments. I found that the 1.375vcore was lovely up to 4.7ghz. (which implies a slight overvolt at 4.5ghz). at 4.8 it needed 1.44 in the bios still with level 7 to be stable. 49x required 1.49v and that is the figure under load.

also for me, incorrect ram timings and voltage gave 0x101 errors which can be quite confusing, careful not to overvolt unnecessarily or change too many settings at the same time.

take note of your bclk as well. even with it disabled the readings can vary by .2mhz and thats enough to make a stable overclock falter as i have found. i have to set mine to 1002 to get 99.8 mhz back up to a perfect 100mhz. this gives me best results.

2 cents from a noob but thought it could be helpful. gl with ur overclock man!
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post #536 of 702
7/27/11 at 5:00pm
Quote:
Originally Posted by beletz View Post
zek,

hwinfo64 has no bugs with sandy bridge unlike other sensor monitoring apps. try it out.

it helped me a great deal to first find the auto vcore value.
level 7 seems to work best with me without pll overvolt. personally, all i did was set level 7, manual dram voltage and qpi/vtt to 1.08 and set vcore on auto until it booted to desktop. that was a solid starting point considering. for me it was 45x. so i took the bios reading for the automatic vcore at 45x and then inputted the same value manually. when intelburn test was fine for 5 passes on very high, i'd raise the multiplier until it barfed 0x101. then i raised vcore by 2 increments. I found that the 1.375vcore was lovely up to 4.7ghz. (which implies a slight overvolt at 4.5ghz). at 4.8 it needed 1.44 in the bios still with level 7 to be stable. 49x required 1.49v and that is the figure under load.

also for me, incorrect ram timings and voltage gave 0x101 errors which can be quite confusing, careful not to overvolt unnecessarily or change too many settings at the same time.

take note of your bclk as well. even with it disabled the readings can vary by .2mhz and thats enough to make a stable overclock falter as i have found. i have to set mine to 1002 to get 99.8 mhz back up to a perfect 100mhz. this gives me best results.

2 cents from a noob but thought it could be helpful. gl with ur overclock man!
So here's a summary of some of the settings I ran after those in my previous post.


Quote:
LLC - 2
4.2ghz
vcore set to 1.4v
1.37v idle
1.28v load
Max temp - 72C

LLC - 3
4.2ghz
vcore set to 1.4v
1.39v idle
1.31-1.34v load
Max temp - 75C

LLC - 4
4.2ghz
vcore set to 1.4v
1.42v idle
1.34-1.38v load
Max temp - 78C

LLC - 5
4.2ghz
vcore set to 1.4v
1.45v idle
1.37-1.42v load
Max temp - 82C

LLC 4/5 seems to be the best middle ground, niether seems ideal though.

At this point I lowered set vcore to 1.35 @ LLC 5.

LLC - 5
4.2ghz
vcore set to 1.35v
1.40v idle
1.33-1.37v load

LLC - 7 (as suggested)
4.2ghz
vcore set to 1.35
1.45v idle
1.39v load

--------------

LLC - 5
4.4ghz
vcore set to 1.35v
1.40v idle
1.33-1.37v load
Max temp - 78C

LLC - 5
4.5ghz
vcore set to 1.35v
1.40v idle
1.33v load
Max temp - ?
BSOD after 2 passes.


Going to try with a higher vcore again for 4.5ghz. 4.4 seems to be the best time before needing a big bump (from past results).

Can anyone comment if my vcore at default on load is high (1.224v @ load)? How likely is it that I received a very bad batch? Are there any other settings I should try adjusting?

EDIT:
Finally some success! Last 2 runs:
LLC - 5
4.5ghz
vcore set to 1.36v
1.40v idle
1.33v load
Max temp -
BSOD after 1 pass

LLC - 5
4.5ghz
vcore set to 1.36
1.40 idle
1.33v load
Max temp - 79C
BCLK - 1002
5 passes!

Time to go read up on managing BCLK. Hopefully I can drop the voltage a bit, perhaps this was the issue after all.
Edited by Wek - 7/27/11 at 5:17pm
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post #537 of 702
7/27/11 at 5:44pm
Thread Starter 
i suggest using level 6 or 7 honestly, i suggest it to everyone, becuase it gives you close to what you set under load.

Dont worry about idle vcore and idle temps, only load matters, as long as you stay under 1.55v for idle vcore and 1.5v for load vcore.
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post #538 of 702
7/27/11 at 6:07pm
Quote:
Originally Posted by Sin0822 View Post
i suggest using level 6 or 7 honestly, i suggest it to everyone, becuase it gives you close to what you set under load.

Dont worry about idle vcore and idle temps, only load matters, as long as you stay under 1.55v for idle vcore and 1.5v for load vcore.
I'll give it a go. Only concern is temps are already just below 80C, which I didn't expect at this vcore with an A70.

Since the bumping the BLCK to 1002 appears to have made it more stable, 5 passes vs BSOD at 2, is there any direction I should continue bumping it in slightly to see if I can lower vcore?
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post #539 of 702
7/27/11 at 6:54pm
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Quote:
Originally Posted by Wek View Post
I'll give it a go. Only concern is temps are already just below 80C, which I didn't expect at this vcore with an A70.

Since the bumping the BLCK to 1002 appears to have made it more stable, 5 passes vs BSOD at 2, is there any direction I should continue bumping it in slightly to see if I can lower vcore?
You really should heed Sin's advice and use a higher level LLC. The problem you're having is due to the Vcore dropping too low under load. LLC takes care of that.

Playing with BCLK is the last thing you should do, if at all. The fact that it helped you in this instance is a bit of a fluke. Get it stable with Vcore and LLC adjustments first.
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post #540 of 702
7/27/11 at 8:11pm
Thanks to everyone for the help.

So after a few more rounds..

Passed 5 on 1.295 vcore, 1.33-1.34v load.
Passed 5 on 1.285 vcore, 1.33v load.
Passed 5 on 1.275 vcore, 1.32v load.

I'll keep dropping vcore bit by bit, LLC seems to be helping out a lot right now, but given previous results I expect I should start getting BSOD within a couple notches. Is there any explanation as to why a 1.32v load would be enough while earlier I would BSOD instantly at 1.33v?
Edited by Wek - 7/27/11 at 8:49pm
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Overclock.net › Forums › Intel › Intel - General › The ULTIMATE Sandy Bridge OC Guide + P67A-UD7 Performance Review