Overclocking 2500k

snips86x · 31 Aug 2013 at 16:03

I currently have an Asrock Z68 Extreme 7 Gen 3 board, paired with a 2500k & 16gb Patriot 1866 RAM.

I was able to overclock to 4.2ghz, but was unable to re-enable the power saving mode. My chip is idling at 40 ish and the fan on the CPU cooler is not running overly quiet either and I'm now at the stage where I'd like to get it sorted.

My current BIOS settings are:

What setting do I need to enable power save mode?
Also, If I can get 4.3/4.4 without much more movement, that would be great, but not essential.

wazza300 · 31 Aug 2013 at 16:22

you need to enable offset cpu voltage

then find the right amount of offset to equal your load cpu v

each llc level affects the load voltage too so I would try with +0.010v offset and try level 3 or level 4 llc and see what cpu v it gives you in cpu-z while stressing

enable all power saving and x.m.p for your memory if it supports it and maybe try 1.10v cpu/vtt(vtt voltage) for 16gb of memory

snips86x · 31 Aug 2013 at 16:30

wazza300 said:
you need to enable offset cpu voltage

then find the right amount of offset to equal your load cpu v

each llc level affects the load voltage too so I would try with +0.010v offset and try level 3 or level 4 llc and see what cpu v it gives you in cpu-z while stressing

enable all power saving and x.m.p for your memory if it supports it and maybe try 1.10v cpu/vtt(vtt voltage) for 16gb of memory

Would that include the 'C' states too?
As for XMP, I think it's already enabled, but will check anyhow.
Also, which way for the offset should I be going if stressing fails? + or -?

wazza300 · 31 Aug 2013 at 16:49

more offset but for 4.2ghz you might only need a little amount,only add one or two clicks at a time and check what the load cpu v is

you can also undervolt the voltage if its too much by using a negative offset so -0.005v ect

and yes enable all c states and eist

remebr to set vtt from stock 1.05 to 1.10v for the memory controller

snips86x · 31 Aug 2013 at 16:55

wazza300 said:
more offset but for 4.2ghz you might only need a little amount,only add one or two clicks at a time and check what the load cpu v is

you can also undervolt the voltage if its too much by using a negative offset so -0.005v ect

and yes enable all c states and eist

remebr to set vtt from stock 1.05 to 1.10v for the memory controller

Ok.

Does it matter if I leave the RAM or does it have to be done at the same time?

Just to clarify before I attempt:
Enable Power Saving, C3 and C6
Set LLC to Level 3
CPU vcore offset to +0.010v
VTT to 1.10

wazza300 · 31 Aug 2013 at 16:57

vtt you mean?yes set to 1.10v

ram will be ok on x.m.p or auto for now

you can also take bios screenshots if you plug a usb stick in and press one of the F buttons

snips86x · 31 Aug 2013 at 17:02

Do I leave Intel Speed step disabled?

wazza300 · 31 Aug 2013 at 17:05

enable that too

snips86x · 31 Aug 2013 at 17:09

wazza300 said:
enable that too

Ok.

I'm going to give it a go, thanks for your help. I would have had no idea where to start.

wazza300 · 31 Aug 2013 at 17:10

what cooler are you using? I would aim for 4.5ghz later

and you might be able to tweak the voltages down

snips86x · 31 Aug 2013 at 17:17

K2 doom at the moment. Have been thinking about changing to H100, but not yet. I've managed to boot in to Windows and prime hits 60 with your settings.

Last time i attempted 4.5, the thermal throttling kicked in.

wazza300 · 31 Aug 2013 at 17:19

what's the load cpu voltage while stressing? you need to keep an eye on that with each offset and llc change

try a 45x multi now and add one click on offset voltage so +0.015v

then post what load cpu v is and load temps

snips86x · 31 Aug 2013 at 17:22

wazza300 said:
what's the load cpu voltage while stressing? you need to keep an eye on that with each offset and llc change

try a 45x multi now and add one click on offset voltage so +0.015v

then post what load cpu v is and load temps

CPUID is reporting 0.976 Min and 1.320 max. This fluctuates between 1.304 and the max value.

Currently, 62 is the max temp so far, but seems comfortable around the 58-59 mark.

wazza300 · 31 Aug 2013 at 17:24

those volts are ok I would try 4.5ghz now,its a good allround clock imo

could leave offset as it is or try with a +0.015v offset

temps wise anything under 80c is acceptable ideally around 75c ish

snips86x · 31 Aug 2013 at 17:25

Idle temp at 4.2 seems much better at 33/4, but the CPU fan seems to stay at max.

wazza300 · 31 Aug 2013 at 17:26

is it a pwm fan connected to cpu fan header? look in the bios for fan control and set to pwm or voltage,it should then ramp up and down according to temps

and if you want to stay at 4.2ghz try lowering the offset now to get load cpu v as low as possible which = lower temps

snips86x · 31 Aug 2013 at 17:31

wazza300 said:
is it a pwm fan connected to cpu fan header? look in the bios for fan control and set to pwm or voltage,it should then ramp up and down according to temps

and if you want to stay at 4.2ghz try lowering the offset now to get load cpu v as low as possible which = lower temps

This is what i struggled to work out. When setting the CPU fan to auto, it gives you a target temp and a target fan speed from level 1 to 9.

Any ideas as Google didn't really help much when i last looked at this.

wazza300 · 31 Aug 2013 at 17:34

I don't know asrock boards tbh but target temp will be the limit you want the fan to speed up

so I would set 70c target temp and level 9

snips86x · 31 Aug 2013 at 17:40

Ok.

Stressing with 4.5 is kicking the multi down to 42 with the occasional touch on 43.

wazza300 · 31 Aug 2013 at 17:41

make sure all the turbo ratios are on auto and just set the cpu multi to 45x

it should boost to 45ghz then and stay there

disabling spread spectrum might make the bclk stay at 100