Any one of you guys OC'd an i5 2500k on an Asus P8Z68-V LX mobo?

jotto · 11 Jan 2013 at 22:15

The BIOS doesnt seem to have some of the settings mentioned in a lot of the guides. I know its only a cheap board but its what I have.

I have a stable 4.5GHz OC when run from windows using the TurboV Evo with a Vcore of 1.320-1.328. CPU voltage is set to 1.220 in TurboV.

When I tried going in to the BIOS and setting the Vcore to 1.220, it would boot IIRC but BSOD.
I wondered what other settings the Turbo program changed but from what I can see, there is no way of making it a permanent OC.

At idle, it drops back to the default 1.6GHz with a voltage of 1.032 which is higher than it used to be.

I would like to get a BIOS OC to 4.5GHz with the same voltage or perhaps a little lower....
Im going to tinker with the program to see what is the minimum Vcore for my usage. Ive read that the Vcore used by software OC'ing is usually a little higher than manually setting in the BIOS, is that correct?

jotto · 13 Jan 2013 at 16:35

I was getting too hung up on trying to enter a manual setting for the CPU Vcore but just couldnt. It looks like on this board the BIOS seems to set a value for a given speed and then you can use either a + or - offset to get what you need.

I have it set with a + 0.065 offset where the BIOS is showing a 1.230 voltage.

Under load seems stable and has a Vcore of between 1.312 and 1.320 so happy with that.
Temps under load are 54/61/58/59 so all good there also.

Now to tweak my memory settings.
They are all at auto at the mo. What is the XMP setting?

InvisiblePrawn · 14 Jan 2013 at 16:39

As far as I know, the XMP (eXtreme Memory Profile or something) settings are pre-defined profiles for common RAM types. I have a similar Asus Z68 board to you and ignored XMP. Just set the basic settings such as timings and voltage according to the RAM specifications and ignore the rest.

Please feel free to correct me someone!

wazza300 · 14 Jan 2013 at 16:47

heres a 4.5ghz guide,type in your own rams settings though and you might need slightly less cpu v offset with a 2500k cpu due to no multithreading

http://forums.tweaktown.com/asus/47510-asus-z68-v-pro-4-5ghz-bios-screenshots.html

jotto · 14 Jan 2013 at 20:12

InvisiblePrawn said:
As far as I know, the XMP (eXtreme Memory Profile or something) settings are pre-defined profiles for common RAM types. I have a similar Asus Z68 board to you and ignored XMP. Just set the basic settings such as timings and voltage according to the RAM specifications and ignore the rest.

Please feel free to correct me someone!

When set to XMP, it sets the memory timings to those specified on my modules.

wazza300 said:
heres a 4.5ghz guide,type in your own rams settings though and you might need slightly less cpu v offset with a 2500k cpu due to no multithreading

http://forums.tweaktown.com/asus/47510-asus-z68-v-pro-4-5ghz-bios-screenshots.html

On your Memory primary settings, you have 9-9-9-24-1, IIRC, I have 9-9-9-24-2.
I have no idea what these settings mean so am loathed to change them until I know what Im doing! lol.

Your BIOS also has a lot more options than mine. I dont think my board was intended for serious over clocking. Seems to be holding up nicely though.

bainbridge · 14 Jan 2013 at 21:11

Set the RAM voltage to 1.5v

wazza300 · 14 Jan 2013 at 23:44

jotto said:
When set to XMP, it sets the memory timings to those specified on my modules.

On your Memory primary settings, you have 9-9-9-24-1, IIRC, I have 9-9-9-24-2.
I have no idea what these settings mean so am loathed to change them until I know what Im doing! lol.

Your BIOS also has a lot more options than mine. I dont think my board was intended for serious over clocking. Seems to be holding up nicely though.

command rate 1 will be better but you might ned a touch more dram voltage

they are basically the same board with just a few features locked out on the cheaper models,your board should do 4.5ghz+ easily

jotto · 15 Jan 2013 at 13:55

bainbridge said:
Set the RAM voltage to 1.5v

It already is.

wazza300 said:
command rate 1 will be better but you might ned a touch more dram voltage

they are basically the same board with just a few features locked out on the cheaper models,your board should do 4.5ghz+ easily

Happy with my 4.5GHz, just wondered how much difference I would notice by tweaking memory settings.

Here are my memory settings as of now,