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Complete Overclocking Guide: Sandy Bridge & Ivy Bridge | *ASRock Edition* - Page 14

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post #131 of 9601
I finally disabled spread spectrum (I have not seen that setting in a bios for a very long time, very interesting) and I seemed to get a bit more stability, with the mult holding at 45 and my speed a solid 4.500GHz. My system is doing well now. I cannot figure out this virtu technology, though it seems to be tied to specific programs, and my confusion is not solitary, as I'm not finding many people having any real success with it. I started a thread on it at the PC Forums in their video/editing forums.

My only other real concern is that some people on this forum have reported mobo problems, specifically PCI slots not working, or the mobo dying outright, and this occurring after a few weeks of being fine. I have noticed that this mobo, compared to previous mobos, seems a bit more fragile. For example, I've used the on-chip video a few times and that whole module flexes a bit when plugging in. I could imagine breaking a connection if not careful. I still have this on the bench, and will not be placing in a case until the weekend at the earliest, where it will be safe/

I hope this holds up. I'm having a ball setting up this system. It had been two years since my last genuine new build, my i7 Lynfield system, and with the UEFI, this was distinctly different, also using an unlocked multiplier with the k-series i5. Makes OCing a lot easier though there are still settings to be adjusted. I've really appreciated all the feedback and assistance.

marty
post #132 of 9601
Wait a minute.

I'm trying this out for overclocking my signature rig listed in my profile.

You typed in the "starting off" section of your tutorial to:
"At this point you will only be concerned with CPU Max Ratio. Offset voltage should be +0.05v and CPU LLC should be Level 2 or 3. The goal here is to find the highest clock you can with stock voltage. If you want a very mild overclock, you can go to the final test after this."

Wait a minute. ANYTIME you INCREASE THE MAX RATIO, the "stock voltage" will no longer be "stock".

the max ratio is default 34 on the 2600k i7 logically. My stock seemed to hover around 1.160-1.168 via MOBO BIOS.

NOW, raising that to 37 max ration brings VCORE to 1.296-1.300

So what the heck do you mean? Anytime you raise vcore, the voltage will increase to accomodate increased frequency and higher temperatures.

at 37 max ratio (3.7ghz) , I had 70°C on max load prime95 on my 4 cores on my i7 2600k with Noctua NH-D14 (1.296-1.3 vcore).

WHAT GIVES???
post #133 of 9601
Being new to OC'ing could someone check my settings. I read on this forum where it says to get your VID settings to match your VCore setting.

BIOS settings:
450

450

450


5 Minute prime blend test: Ambient temps = 23c
344

I know I can go higher but 45 is good for the time being.

Thanks for any suggestions
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post #134 of 9601
This cleared everything up for me

This should help too
http://www.overclock.net/t/1219588/offset-mode-overclocking-starter-guide-and-thread
Quote:
Originally Posted by coolhandluke41 View Post

VID is not the same as VCore. VCore is the actual voltage the processor is being fed by the motherboard.
VID is the recommended voltage the processor should be running at at the current power state, this is a predetermined value, programmed by the CPU manufacturer. When the processor settings, especially the VCore is kept at default settings, Core Temp will provide a good approximation of the real VCore, but if you change the setting using the BIOS or by other means, Core Temp's VID readings should be ignored.

Edited by Lucky 23 - 3/24/12 at 10:07am
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post #135 of 9601
Oh! Ok. I guess I'm good to go then.

Thanks Lucky!
Edited by Turtley - 3/24/12 at 11:47am
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post #136 of 9601
Quote:
Originally Posted by XxAlbertoxX View Post

Wait a minute.
I'm trying this out for overclocking my signature rig listed in my profile.
You typed in the "starting off" section of your tutorial to:
"At this point you will only be concerned with CPU Max Ratio. Offset voltage should be +0.05v and CPU LLC should be Level 2 or 3. The goal here is to find the highest clock you can with stock voltage. If you want a very mild overclock, you can go to the final test after this."
Wait a minute. ANYTIME you INCREASE THE MAX RATIO, the "stock voltage" will no longer be "stock".
the max ratio is default 34 on the 2600k i7 logically. My stock seemed to hover around 1.160-1.168 via MOBO BIOS.
NOW, raising that to 37 max ration brings VCORE to 1.296-1.300
So what the heck do you mean? Anytime you raise vcore, the voltage will increase to accomodate increased frequency and higher temperatures.
at 37 max ratio (3.7ghz) , I had 70°C on max load prime95 on my 4 cores on my i7 2600k with Noctua NH-D14 (1.296-1.3 vcore).
WHAT GIVES???

bump
post #137 of 9601
@ turtley and others.... This is how i see it but please correct me if im wrong in how im seeing this.

My 2500k has almost the same VID and Cpu-z vcore basically as you. My VID @ full load is 1.4011 and 1.3961 @ idle and w/ 45 multi.

I tried a first test on P95 w/ a 45 multi +0.005 offset and my CPU-z Vcore (full Load) ranged between 1.280-1.288-1.296 MAX but it didnt last 5 minutes before failing so i need a higher + offset.

Now i tried a second test w/ a 45 multi and a +0.015 offset which brought my CPU-z vcore up to a range of 1.288-1.312 MAX. So you can see how the offset change my CPU-z vcore. 1.312 - 1.296 = .016. Adding a +0.015 in bios brought my CPU-z up to 1.312 from 1.296. It passed the first test of prime95 w/out failing so no im going to see how long it will last.

I was confused on this also seeing such a high VID but if i understand this correctly you dont have to get your VID to match your CPU-z voltage. According to the quote i posted above VID only the recommended Voltage required at a 45 multi (at a 42 multi the recommended VID will be lower) but you dont want to run 1.396v for 4.5ghz you want to run less. At least what im seeing you dont really need to pay much attention to the VID only what in CPU-z

(just for example) In order for your CPU-z voltage to match your VID you would need to find out the difference which would be roughly 0.1160, 1.396 VID minus Max Cpu-z voltage of 1.280 = .116. So if you enter a +0.1160 offset in bios you should see your CPU-z voltage fairly close to your VID (was 1.280 +0.116 offset = 1.396) but thats most likely too much offset for 45 multi. So if im right on understanding offset correctly were giving the cpu only a small offset which will increase/decrease the value seen in cpu-z.

Or if you need less vcore in CPU-z then you would start going into the negative offsets since a +.005 is the lowest positive. By setting a -.015 you should now see your vcore in cpuz roughly around 1.265v max.....(1.280-.015)

With the offset you set in bios your idle cpu-z voltage will also increase/decrease depending on which offset you apply.

For example w/ a 45 multi and a +0.005 offset my cpu idled w/ 16 mult and idle cpu-z voltage range of .984-.992.

Now w/ a 45 multi and a +0.015 offset my cpu idles at a 16 multi and a idle cpu-z voltage range of 1.000-1.008max. (.992+.015 offset = 1.007) so my idle voltage also increase when changing from a +0.005 offset to a +.015 offset.

My settings in bios are similar so you can check mine out below

CPU ratio 45
Internal PLL disabled
Intel Speed step Enabled
Short duration 250
Long duration 250
Long duration (sec.) 1
Additional turbo voltage Auto
Core Current limit 200
BLCK 100.00
Spread Spectrum disabled
Power savings disabled
Offset Mode w/ +0.015
Dram voltage 1.499 (9-9-9-24)
LLC Level 3 ( 5 is lowest & 1 is highest)
All other voltages on auto
C1e Enabled
C3 disabled
C6 Disabled
C state support Auto
Edited by Lucky 23 - 3/24/12 at 6:16pm
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post #138 of 9601
Quote:
Originally Posted by XxAlbertoxX View Post

bump

If im seeing this correctly you have a 37 multi and a +0.005 offset which equates to CPU-z load voltages around 1.296-1.3. So instead of a +0.005 offset you would want to bring your voltage down since you may need or want less then 1.3v (CPU-z) for 3.7ghz? So if im seeing offset correctly .....for example you would try maybe a -0.025 offset (1.3v -.025 offset in bios = 1.275 roughly in Cpu-z now). If you want less then 1.275v then you would try a higher negative offset to bring down the cpu-z voltage
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post #139 of 9601
Quote:
Originally Posted by Lucky 23 View Post

If im seeing this correctly you have a 37 multi and a +0.005 offset which equates to CPU-z load voltages around 1.296-1.3. So instead of a +0.005 offset you would want to bring your voltage down since you may need or want less then 1.3v (CPU-z) for 3.7ghz? So if im seeing offset correctly .....for example you would try maybe a -0.025 offset (1.3v -.025 offset in bios = 1.275 roughly in Cpu-z now). If you want less then 1.275v then you would try a higher negative offset to bring down the cpu-z voltage

Interesting. that makes sense.

How the hell do all of you post pictures with a 45 or 47 ratio with offset +0.05 and voltages at load less than <1.300??

I put the ratio at 37, which is a WEAK overclock, and my voltage skyrockets....................

I'll try doing the negative offset.

Does anyone else have the 2600k i7 here? My voltage in BIOS with everything stock registered at 1.160-168 as default. Does this seem right?

How come the max voltage for the 2600k is still not listed? and why does the intel official site list it as 72C tmax but this tutorial say 85C?
http://ark.intel.com/products/52214/Intel-Core-i7-2600K-Processor-%288M-Cache-3_40-GHz%29
post #140 of 9601
Been using this guide, it is great. But I can't get 4.9ghz stable with decent volts, so i'll have to settle for 4.8ghz.
     
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