Originally Posted by keto;15184547
I can answer your last question very quickly. I had vcore at 1.420 and LLC at 5. My load voltage dropped to 1.416, which was too low...I need somewhere right around 1.420-1.425 at 4.8. My idle was cruising along at 1.452, with fluctuations to 1.464 *that I saw*. I know this is a bit smaller than my stated delta of 0.60 in my prior post (0.48 in this case), but I wasn't at that setting long enough to say that I observed all the fluctuations - P95 failed quickly.
I need to learn to take screenshots LOL.
I'll go investigate prior bios revisions. I have no SSD, which has been an improvement made in recent revisions, so that is of no concern to me.
Off to bed, will resume tomorrow, I'm in Mountain time zone.
In that case I would say level 5 is better, remember the more your reduce LLC the more you need to increase the vcore. Which basically means you need to set your vcore to atleast 1.435 or similar to actually get a load of 1.420v and not 1.416v. Im amazed at the levle of vrise you get under idle. Even if you set hte vcore in the bios to 1.435v under idle it shouldn't be that higher, maybe a couple notch's which is fine, after all idle voltage is not really important, more so when you use offset.
Originally Posted by Ellis;15184604
Oh, man, I really can't be bothered with that.
I left it running all night and it's still alright, I know that's not a great test but it gives me a bit of hope.
After this, what can I do to reduce temperatures/voltage/increase lifespan? Would decreasing the PLL voltage from 1.7V help things? I basically want to be as nice to the CPU as possible, use as little power as possible, whilst keeping the 4.5GHz performance.
If you have a stable setting, the only you can do is start reducing each voltage in small increments and re-test, you may have luck taking the PLL voltage down further.
Originally Posted by crUk;15185264
5ghz was too toasty on my chip. Still waiting for my nh-D14.
This will do for now.
Had to settle for this. All my 212+ can do.
I'll the add submission a bit later one. Hopefully everything is in chekc, unfortunatly due to my internet connection at this moment I could not view the pics, however maybe later on it'll be fine. Anways Like I said, I'll add it to the spreadsheet later on. Thanks again EDIT:
Just realised you're using the wrong version of realtemp. Please download hte latest one just below the RULES section Soory bud, it won't be fair to al the others. Please refer to the rules when you get a chance.
Very impressive!!!! is that your chip???
Originally Posted by alucardx;15187819
First of all thanks to all the contributors on this forum, I've been lurking for many weeks absorbing all of the information. I finished my new build a few nights ago and have begun overclocking and stress testing.
Thus far, I used the OC method outlined in this thread's OP.
I wanted to try to use the "offset method" but it got confusing so I decided for a more traditional fixed voltage for now.
I used the following settings per the OP with a few additions:
RAM - Manually configured per default timings (pc-1600 / 8-8-8-24 2T)
LLC - Ultra High
Speed step, c-states - Enabled / auto (defaults)
Turbo multiplier - 45
Vcore (fixed mode) - 1.335 (started with this for now)
CPU PLL Voltage - 1.70
all other voltages - defaults
CPU Current Capability - 140%
Phase and Duty Control - Extreme
EPU Power saving - Disabled
VRM Frequency - Manual - 350
Spread spectrum - disabled
So I set those settings last night, booted up first try with no issues, and I'm continuing to stress test right now at 4.5 GHz. I'm using Prime95 custom blends like this, http://www.overclock.net/14618583-post2807.html
Temps thus far:
Idle (highest idle value out of the 4 cores) = 36
Max (highest idle value out of the 4 cores) = 72
Voltages thus far per Realtemp 3.67:
Idle Vcore VID = 0.9957
Max Vcore VID = 1.3611 (fluctuates during Prime95 between that and 1.3561)
Few thoughts so far:
1. My biggest question is note above how my idle and max Vcore change. I thought this was only possible either with Intel/bios defaults, or by using a Vcore offset. However, in my setup, with a fixed Vcore of 1.335 my Vcore clocks down to .9957 (don't have exact value right now) and speed goes to 1.6GHz, and under load it ramps up. Am I missing something?
2. Since this is only my first try, I still have some tweaks to do. At this point since I believe I'm stable (still need a 12hr prime test), I may increase to 4.6 and beyond and see where I hit a wall.
3. I probably have some Vcore room and may look to try to decrease it a bit. I'm not sure how much higher in max temps that I'm comfortable with.
4. My Vcore per bios and Asus utility is set to 1.335v. However under load it is actually 1.3611. This is like opposite Vdroop. Is this because of the LLC of Ultra high? Should I try to tweak the system so these values try to match as close as possible?
5. Had some, possibly Asus specific, questions about Bios settings. Under CPU management, there's sections that have a "different" non-turbo multiplier setting. Is this how you configure what your minimum/idle clock down value is?
Originally Posted by keto;15188520
Lest I mislead anyone from my posts the last couple of pages, I DID FIND DVID OFFSET in the Gibabyte bios. It's strange how it's set up though....
It's in Advanced Voltage Options, underneath CPU vcore, and greyed out when vcore is either on auto or set manually...but there's a third option (I'll edit it back in here it escapes me at the moment). When that option is picked, vcore is locked in and LLC/Multi Step is disabled/greyed out, but then Dynamic Vcore (DVID) comes to life - and that is where you can set either + or - offset.
It's there in the F4 bios, and there in the F10a bios, I flashed back and forth between them today experimenting.
Now, away I go to play with offset.
Firstly you can go ahead and enable Spread Spectrum, it doesn't effect Asus mobo's and overclocking, it should only be disabled when tweaking BCLK.
Secondly amke sure RAM is running at stock either via XMP or by setting the timings and voltage manually, then we can concentrate on the CPU overclocking.
1.355v seems like a high starting point, personally I would start at 1.25v, I have seen 1.212v stable 4.5ghz. Manual voltage would be a good place to start then we can move onto offset voltage.
Voltage reading should be done with cpu-z as VID is different from vcore. Realtemp displays the VID and not the actual vcore. It is only used for when you subtract or add value to that VID value to gain a respective voltage when using the offset method. 72c under prime testing is fine, please read the *** Max safe voltage and temps for Sandybridge*** in the OP for more info.
Is that using Cpu-z? I find it strange how the vcore can clock down without offset. As mentioned before use cpu-z for all vcore readings unless you have a gigabyte Z68 mobo.
As mentioned above I think your vcore starting point of 1.355v for 4.5ghz is way tooo much, start at a lower value and work your way up, you'll be suprised and might even find that a much lower vcore than 1.355v would stabalize 4.5ghz.
Again as mentioned read the ***safe max voltage and temps for sandybridge and make your decision. I would personally say upto 85c under stress testing is fine.
The most important ones are BIOS and cpu-z, forget asus software. LLC helps eliminate or reduce the vdroop as much as possible, you may not exactly get the value that you set in the BIOS but ultra high usually works best for Asus mobo's, however Im using High with Offset mode which worked better for me, but we'll get to that a bit later on after you have found the right voltage for your 4.5ghz overclock.
Had some, possibly Asus specific, questions about Bios settings. Under CPU management, there's sections that have a "different" non-turbo multiplier setting. Is this how you configure what your minimum/idle clock down value is?
The cpu ratio is usually left alone and the turbo multiplier is what allows us to overclock, well that is how I've been my overclocks. The Safety features are available in that section, more specifically C1E and Speedstep allow the multiplier to drop when the cpu is idling, however you cannot control the level of downclock, that's just the way it is. If you use Offset as opposed to manual in combinbation with C1E and Speedstep it allows the voltage to drop along with the mulitplier.
Hope that answer's your question's
Originally Posted by PR-Imagery;15188619
Noticed that as well. I have LCC/Phase Control set to Extreme and vcore to 1.375, running Prime it ramps between 1.38v and 1.39v. When I had it set to Ultra High it ramped up as high as 1.38, and High setting it generally stayed below 1.375. I'm guessing its due to the higher LCC setting.
LLC shoudln't be set to extreme as that will cause Voltage spikes, I would much rather reduce hte LLC a notch or two and control the vcore in that way using small increments changes of manual or offset voltage.
Poeple tend to forget the aim of LLC, it is there to compensate the vdroop not increase the voltage higher than what is set in the BIOS, if you need a higher vcore value it makes sense to incarese the vcore. There is a reason why Asus and other companies have allowed us to change the vcore in very small increments, bit more control of the vcore. LLC can be eccentric, but used correctly it can help.Edited by munaim1 - 10/5/11 at 11:11am