Trying to restore my CPU overclock.

Malmortius · 26 Dec 2014 at 21:59

forteh said:
The additional sticks of ram can cause instability because the memory controller on the cpu has to work harder to drive all four sticks. With 2 sticks my memory controller is stable up to 219 bclk whereas with 4 sticks it won't go over 200 bclk. Not a major issue but needs to be considered when pushing overclock limits.

As you have 1600mhz ram, just record the spd timings for the 1600 column, these will be used when trying to determine the maximum speed the ram can run at.

I may aswell just do this ;p

freddie64 · 27 Dec 2014 at 09:37

Just had a look at the manual for your board.

When you first enter bios, press F12 to load CMOS from BIOS.

If there is a OCUK profile, it should be saved here.

If there is and it loads successfully, check the DRAM timings and volts, as you have changed the RAM.

Malmortius · 27 Dec 2014 at 12:14

freddie64 said:
Just had a look at the manual for your board.

When you first enter bios, press F12 to load CMOS from BIOS.

If there is a OCUK profile, it should be saved here.

If there is and it loads successfully, check the DRAM timings and volts, as you have changed the RAM.

It doesnt seem to load. Theres a profile called "ocuk" but when i choose it, nothing changes.

wazza300 · 27 Dec 2014 at 13:21

for 3.9ghz oc

set bclk to 186
set cpu multi to 21x
set memory multi to 8x
set uncore frequency to 16x

idk what motherboard you have but gigabyte set qpi/vtt voltage to 1.35v,(dram vtt if asus)

set dram voltage to what your ram is usually 1.66v (1.65v in windows)

set cpu voltage to normal (offset if asus)

then try +0.0500v dvid(offset if asus) (may be able to lower later)

then see what the load (while stressing cpu/cpu voltage is) use prime95 and use cpu-z to see load cpu voltage

enable all powersaving in bios apart from c1e,disable that

freddie64 · 27 Dec 2014 at 18:25

Malmortius said:
It doesnt seem to load. Theres a profile called "ocuk" but when i choose it, nothing changes.

Would have thought it would just ask you to confirm your choice and then click save and exit/restart.

I'm sure the guys here will help you get a good and stable overclock.

Malmortius · 27 Dec 2014 at 22:35

wazza300 said:
for 3.9ghz oc

set bclk to 186
set cpu multi to 21x
set memory multi to 8x
set uncore frequency to 16x

idk what motherboard you have but gigabyte set qpi/vtt voltage to 1.35v,(dram vtt if asus)

set dram voltage to what your ram is usually 1.66v (1.65v in windows)

set cpu voltage to normal (offset if asus)

then try +0.0500v dvid(offset if asus) (may be able to lower later)

then see what the load (while stressing cpu/cpu voltage is) use prime95 and use cpu-z to see load cpu voltage

enable all powersaving in bios apart from c1e,disable that

Hey i had a look at all these settings, i couldn't change the DVID, it had an X next to it and no option to enable me to change it. Its on optimised right now so i dont fry my pc or anything, so ill wait until i have a bit more info from you.

Also, i couldnt find the powersaving options in the bios, or anything about c1e.

wazza300 · 27 Dec 2014 at 22:41

Yeah you have to first scroll through CPU voltage till you see normal,once you set to that it unlocks dvid for adjustment

C1e should be in there somewhere,just enable eist,or load optimised defaults and re enter all the other oc settings,the rest will be enabled by default (powersaving ect)

Malmortius · 27 Dec 2014 at 23:15

wazza300 said:
Yeah you have to first scroll through CPU voltage till you see normal,once you set to that it unlocks dvid for adjustment

C1e should be in there somewhere,just enable eist,or load optimised defaults and re enter all the other oc settings,the rest will be enabled by default (powersaving ect)

This is probably going to P off those of you who were kind enough to help, but i was able to activate my ocuk overclock.. i pressed enter on the profile twice and it worked. Wow, i forgot the difference between 2.9 and 3.9... DA inquisition seems to be running much better, unless its just a placebo effect (is it?)

The temps were around 65-75 consistently when the cpu load was 80%-100%

My only worry now is, my original overclock was optimized for 4GB, so will i have to change anything right now since im using 8GB ram?

Ronald · 27 Dec 2014 at 23:47

If it is stable, no. Sounds like the memory you bought has more headroom than your old 4GB so I wouldn't be too suprised if it is stable as you have it now.

Initially I assumed you added memory to reach 8GB, rather than replace your original 4GB, which would be a bit more difficult to stabilize.

wazza300 · 27 Dec 2014 at 23:52

Only thing I'd check is qpi/vtt voltage,you might need around 1.32v with 8gb of ram

Malmortius · 28 Dec 2014 at 00:04

Ronald said:
If it is stable, no. Sounds like the memory you bought has more headroom than your old 4GB so I wouldn't be too suprised if it is stable as you have it now.

Initially I assumed you added memory to reach 8GB, rather than replace your original 4GB, which would be a bit more difficult to stabilize.

I originally added the ram to make 12gb i think, but it caused bluescreen. I took out my old 2x2gb ram and placed in 2x4gb

wazza300 said:
Only thing I'd check is qpi/vtt voltage,you might need around 1.32v with 8gb of ram

Might, or will?

Ronald · 28 Dec 2014 at 00:09

Malmortius said:
I originally added the ram to make 12gb i think, but it caused bluescreen. I took out my old 2x2gb ram and placed in 2x4gb

Did the 12GB run on the OCUK profile at all, or only after the bios reset itself?

It would be unfortunate, but not unheard of to not be stable at stock speeds with such different memory modules.

Malmortius · 28 Dec 2014 at 00:12

Ronald said:
Did the 12GB run on the OCUK profile at all, or only after the bios reset itself?

It would be unfortunate, but not unheard of to not be stable at stock speeds with such different memory modules.

i don't think it did. The overclock reset and the pc went to defaults when it bluescreened after putting in the ram. I think it might have been because i had in 3 sticks of ram? which ive heard is bad.

How will i know if its unstable, random crashes?

wazza300 · 28 Dec 2014 at 00:16

Will need more qpi/vtt if its set to auto or using less than 1.32v

Use prime95 blend test for CPU and memory stability

124 bsod not enough qpi/vtt

101 bsod not enough CPU voltage

Malmortius · 28 Dec 2014 at 00:18

wazza300 said:
Will need more qpi/vtt if its set to auto or using less than 1.32v

So ill go and set the qpi/vtt to 1.32v right? Anything else i should do while im on the bios?

wazza300 · 28 Dec 2014 at 00:22

Should be fine if its ocuk profile,they probably won't oc using powersaving/dvid

They use a fixed CPU voltage and it won't downclock at idle

It takes time to tune but dvid is better imo

Malmortius · 28 Dec 2014 at 00:27

wazza300 said:
Should be fine if its ocuk profile,they probably won't oc using powersaving/dvid

They use a fixed CPU voltage and it won't downclock at idle

It takes time to tune but dvid is better imo

I don't know what dvid is. keep in mind im a noob at this.

wazza300 · 28 Dec 2014 at 00:35

It just let's the CPU use less than 1v at idle,if stressed it uses full voltage

You have a default CPU voltage set by Intel,each chip is unique in how much default voltage it uses,dvid (dynamic vcore) adds what you set in it needed for stability ontop of the default voltage

So say you have 1.2v default and you set +0.0500v in dvid this would give you 1.25v CPU voltage at load and allow CPU to idle at 1v

Malmortius · 28 Dec 2014 at 00:37

wazza300 said:
It just let's the CPU use less than 1v at idle,if stressed it uses full voltage

You have a default CPU voltage set by Intel,each chip is unique in how much default voltage it uses,dvid (dynamic vcore) adds what you set in it needed for stability ontop of the default voltage

So say you have 1.2v default and you set +0.0500v in dvid this would give you 1.25v CPU voltage at load and allow CPU to idle at 1v

Oh, that makes sense.

QPI/VTT was on 1.00(Auto?), i put it to 1.31v (it was either 1.31 or 1.33)

wazza300 · 28 Dec 2014 at 00:39

Yh 1v won't be enough for 8gb,I ran mine for years at 1.35v max safe is 1.4v but you won't need that much