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[Official] The Sandy Stable Club **Guides, Voltages, Temps & BIOS Templates** Inc SPREADSHEET - Page 503

post #5021 of 10702
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Screenshot under load^^ Like I said many times, read the OP and the rules carefully.
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post #5022 of 10702
So something I noticed from this thread and a couple others. (I have been ignoring a lot of OC threads as of late >< ). I noticed that if you are using Offset mode for voltage to disable C3 and C6 states, is this correct? The only reason I ask is because I recall seeing TwoCables post and I think Munaim has shown me a template as well with these enabled and using offset mode.

I'm just curious if I may have missed something with C3 and C6 over the past 2 months I've been MIA.
post #5023 of 10702
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Quote:
Originally Posted by crabby654 View Post
So something I noticed from this thread and a couple others. (I have been ignoring a lot of OC threads as of late >< ). I noticed that if you are using Offset mode for voltage to disable C3 and C6 states, is this correct? The only reason I ask is because I recall seeing TwoCables post and I think Munaim has shown me a template as well with these enabled and using offset mode.

I'm just curious if I may have missed something with C3 and C6 over the past 2 months I've been MIA.
When using offset C3 and C6 reports should be disabled as it can cause idle lock ups, also this is something that was bought to my attention not so long ago:

Quote:
Originally Posted by FoLmEr View Post
Yup I can attest to the C3-C6 states lowering throughput of SSDs.

Below are some tests I did earlier with my previous SATA II SSD (Corsair Force120).

WITHOUT C3-C6 states:


WITH C3-C6 states:


The drop is even greater w/ SATA III.

As you can see, though, only my writes are getting handicapped, but at 216MB/s it's pretty fast anyway, so I guess it's only almost a nobrainer. Other sysconfigs may yield different results, so you should test it yourself on your system altho generally I ALWAYS disable C-states while overclocking since I just don't see the need for them.
Now im not 100% sure if this caused by a firmware issue or something but C3 and C6 report should be disabled, therefore you must use offset voltage.

EDIT:

I believe this is apparent with high overclock's 5ghz+.
Edited by munaim1 - 10/28/11 at 8:13am
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post #5024 of 10702
Oh my goodness I had NO IDEA that the C3 and C6 states affected SSD's. That is so bizarre. Thank you once again Munaim for the quick response.

Time to edit my sheet of paper with my Bios settings
post #5025 of 10702
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Quote:
Originally Posted by crabby654 View Post
Oh my goodness I had NO IDEA that the C3 and C6 states affected SSD's. That is so bizarre. Thank you once again Munaim for the quick response.

Time to edit my sheet of paper with my Bios settings
No problem but it was DaGoat (viewing thread right now ) who bought this to light, so on that note massive thanks to him!!!!

Here's the intial post regarding the matter:

Quote:
Originally Posted by DaGoat View Post
There, I found it, it is this page indeed. 2nd post, quote hidden below TwoCable's template.

Quote from Juan Jose

"Quick note regarding options that can affect subsystem performance
It is NOT advised to make adjustments to Cstates as this can considerably affect hard drive throughput performance ( especially SATA6G SSD or Sandforce 2 based SSD ). It is recommended that all CPU power configuration states be left on their default parameters. Overclocking tests have shown internally no increase in multiplier scaling when adjusting these values. * under special cases with high multi capable CPUs and synthetic high load applications ( Linx, Prime, Occt ) it may required C states to be disabled. This has generally only been confirmed for some 51-54 multi capable CPU’s."

So in fact Cstates shall be disabled only for very high - 5.1+ OCs. I don't have an SSD with a SF controller but my Crucial M4 is indeed plugged into the SATAIII port, that's why I felt a loss of performance when disabling C3 & C6.

Edited by munaim1 - 10/28/11 at 8:23am
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post #5026 of 10702
I am a tad confused again.

Quote:
So in fact Cstates shall be disabled only for very high - 5.1+ OCs. I don't have an SSD with a SF controller but my Crucial M4 is indeed plugged into the SATAIII port, that's why I felt a loss of performance when disabling C3 & C6.
I am going to assume that was a miss type? In that quote it says disabling C3 and 6 caused a loss in SSD performance?
post #5027 of 10702
can i join?



i did a 12hour custom blend using 90% of the ram (14500mb)

anything else i need to do?! or do i gets to join!?
highest temps
64/65/71/65 C ambiant of 21/22C
blend for 12h
16GB 1600mhz Gskil
Hyper threading on
Edited by Big-Pete - 10/28/11 at 9:44am
post #5028 of 10702
Quote:
Originally Posted by apSlain View Post
Yeah, it's so tempting to try and push it to the limit.

I think I know my limit. Will try for 5GHz purely for enthusiast reasons...if I can get that under 70 degrees and a VCore of under 1.39, I'll probably consider keeping it considering it probably won't be a 24/7 rig. Hopefully, if I do reach that goal, enabling Speedstep to lower the VCore/MHz/Temperature will work to save it being completely strenuous.

And don't worry, I know it's a far-reaching goal

EDIT: Hmm, looking at the existing spreadsheet here, I'm definitely reaching too far. Most results here are at over a voltage of 1.4 WITH water cooling and temperatures exceeding 75 degrees. Plus, my case isn't too good with heat and I do game a lot...hmm. I'll have a think about this before doing anything stupid.
Just pick up a H80 or H60, they're cheap enough, work well too for gamers. Or if you dont want water in your pc, get a DH14
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post #5029 of 10702
Quote:
Originally Posted by Big-Pete View Post
can i join?



i did a 12hour custom blend using 90% of the ram (14500mb)

anything else i need to do?! or do i gets to join!?
highest temps
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blend for 12h
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Hyper threading on
Worker#7 - Not running... huummmhh... 79% load...
    
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post #5030 of 10702
Quote:
Originally Posted by crabby654 View Post
I am a tad confused again.



I am going to assume that was a miss type? In that quote it says disabling C3 and 6 caused a loss in SSD performance?
Nope, this is not an error, I indeed experienced a loss of FPS that I attributed to SATA performance loss when disabling Cstates during an overclock, this is why I wrote this and made a research on Cstates. But the graph indeed shows a loss of performance when Cstates enabled. Two scenarios:

1) As indicated in the paragraph below, there is loss of SATA performance simply by tweaking Cstates out of their default parameters,

or, more plausible,

2) In fact nothing proves that the loss of FPS I've experienced was due to SATA, it was certainly something else and I've looked in the wrong direction when seeking info on Cstates.
But in the end this made me discover a useful piece of info .

It was a long time ago, now my OC works so I can't tell you why my FPS dropped down at this very moment.

Anyway, so,
Regarding Offset & Cstates:

_________________________________________

1) Here's a copy-paste from this thread

A few Words about Offset Vcore.

Me and others have seen that when using Offset instead of manually typing in the Vcore, you get a more stable Vcore - Vcore will fluctuate less VS manual Vcore. This again can contribute to a somewhat lower Vcore needed for a certain clock frequency VS manual Vcore setting.

When you put volt values in the Offset field, you add the Vcore you type in there, to the VID of your CPU. However, the VID will vary between each different CPU, and also the speed you run it at.

My 2500K has 1.2410v VID when at 3.3GHz stock. This VID changes to 1.3410 when I overclock it to 4.5GHz. When I type in + 0.020 Volts for Offset, it will then give me 1.3410v + 0.020v = 1.3610v under load. This was tested with LLC at Ultra high. My real Live Prime 95 Blend Vcore varied between 1.360v - 1.376v. And for the most part was about ~1.368v.

If you are stable at full load, like Prime95 while using Offset, but get BSOD's when Idle/light load it is probably because the CPU Vcore ramps down on different load.

This usually happens at higher overclocks when using Offset. For me it works perfectly to use Offset at 4.5GHz with no BSOD's. But if you get problems on higher overclocks, you can try one of two things:

i) Try disabling C3/C6 states. This will hinder the CPU in ramping down the Vcore (as much?) when at idle/light load with Offset Vcore. (Will try this myself. Got a report it helped stability.) Update! I have been using C3/C6 disabled for a long time now. Turns out these can cause idle BSOD's or freezing if they are at AUTO or ENABLED when overclocking. Me and others have confirmed it is best to leave these two Disabled when overclocking.

Beware though, that when disabling both C3 and C6 the Turbo Ratio: By Per Core function in bios will no longer work.


ii) Use manual Vcore setting instead of Offset.

__________________________________________________ ___

2) Another copy paste from this post, quote by by JuanJose


Quick note regarding options that can affect subsystem performance
It is NOT advised to make adjustments to Cstates as this can considerably affect hard drive throughput performance ( especially SATA6G SSD or Sandforce 2 based SSD ). It is recommended that all CPU power configuration states be left on their default parameters. Overclocking tests have shown internally no increase in multiplier scaling when adjusting these values. * under special cases with high multi capable CPUs and synthetic high load applications ( Linx, Prime, Occt ) it may required C states to be disabled. This has generally only been confirmed for some 51-54 multi capable CPU’s.

__________________________________________________ ___


Et voila. (Thanks for the Heads-up Munaim! )
Edited by DaGoat - 10/28/11 at 10:42am
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