No Joy With 2500k

Shadz

Shadz

Shadz

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Joined
6 May 2010
Posts
1,003
Location
Nottingham, UK
Hi mate,

I would really like to Overclock my 2500k and have followed some really good
guides from what other members on the forum have put up but the problem is
that my system always seems to crash when I run Prime95, only running that
because that is what everyone seems to run after an overclock.

My system is in the specs below if you could list some stuff for me to change
to get a 4.5Ghz stable overclock I would really appreciate this bud.

Also I have a H100 Cooler as well that is not listed in my sig specs.


Cheers mate
 
Is Prime95 the best thing to test the stability of an Overclock Wazza?

Im only using it because everyone else does but if there is a better way feel free
to let me know mate.
 
8 Pack said:
Sure you can link that.

Use that as a starter as it is well written and any problems you get, hit me with specific questions.
Click to expand...

I have a specific question for you mate if you dont mind.

I have looked at the link that is above and it looks great my only question
at the minute is I don't want an overclock of 4.8ghz i would like 4.5Ghz so
what voltage do i need to put in for this kind of overclock as I cant see it on
this guide?

Thanks
 
Ok guys so using the link above i seem to have got some joy out of an overclock but
I have a question.

So I set my volt to 1.320 and it seems to be fine but the problem I have it I have ran Prime95
and it didnt crash or anything but CPU-Z also reported that the speed stayed at 3.3000
on my CPU even though it states the multiplier is x45.

Any idea why, I though Prime95 would send the speed of the processor right up to be
honest. Screenshot below.

overclock_zps3828d953.jpg
 
when you stress the cpu in prime,how much was showing as cpu voltage? (this is when you used offset and the guide I posted)

you might need anywhere from 1.25v to 1.35v for 4.5ghz it depends on the chip,in which case just keep adding one/two clicks more offset and see how much more cpu voltage it uses when your stressing

for turbo ratio's it will be in the bios somewhere if all on auto and just the cpu multi at 45x then it should clock to 4.5ghz

I have my 2600k/z68 board at 4.5ghz fully stable with +0.020v but you might need more
 
Ok for some reason I accidently turned off speed step and the other one whoops.

Funny thing is I have turned them back on now and my CPU-Z shows me as a speed to
change some im gonna do another prime95 and leave it for 10 minutes and check see what
happens I will report back to you mate.

I really Appreciate you help Wazza you have been great man.

On last stress test it was showing Core Voltage at about 1.322V just fluctuated around that
area?
 
Lets hope so mate,

So latest news report lol.

Did 1 pass on Prime95 got to 2nd test and it froze and I got a blue screen.
So considering that I am using the guide above I would assume that I need to use more
voltage on the processor. I had it set at 1.320V so what is my safe level to go upto m8?

Also just so you know once I activated the speed step again as soon as I ran prime my
speed shot up to 4.5ghz and stayed there and my vaultage on CPU-Z was reported
between 1.302 - 1.320ish temps never went about 53

EDIT: I have just noticed that on the guide above it says the following:

1. For K series parts, the stock voltage supplied will allow for consistent overclocking generally up to a multiplier of 43x.
There is potential for the multi to be raised to 44x depending on the load induced.
This default voltage range be approx 1.240 to 1.260 under load.
2. Increased range between 44 to 47x multipliers will generally require a voltage range between 1.30 to 1.375V with an LLC recommended setting of high to ultra high.

So if I put my voltage to 1.375 and my LLC to ultra high I might get a stable OC? Right ?
 
Last edited:
Ok so after a bit of messing about and tweaking some more volts and stuff I was able to
get 11 tests on Prime95 without and crash.

I was monitoring the Volts on CPU-Z and the most they went upto was 1.355V
then dropped back down again. I have put a SS up of them both after the test
so you can look at temps and stuff and let me know what you think if you dont mind
mate.



P.S. Those temps are with my H100 on the Quiet mode I will happily put it on the next
mode up though if you think those temps are a little on the high side.
 
Last edited:
that's ok but you need to use offset to allow cpu voltages to drop below 1v at idle,and full 1.355v at load

idk how high you went with cpu offset before but keep going till it shows around 1.35v under load (when your stress testing)

cpu voltage wont drop down if you set a fixed amount
 
wazza300 said:
that's ok but you need to use offset to allow cpu voltages to drop below 1v at idle,and full 1.355v at load

idk how high you went with cpu offset before but keep going till it shows around 1.35v under load (when your stress testing)

cpu voltage wont drop down if you set a fixed amount
Click to expand...

I set a fixed amount like it said to do in the guide that is linked on this post
mate.

Is it a problem having the volts like that all the time?
If so I think I will just remove the OC because I don't have the time to sit
and mess about with the offset to be honest with you till at least the weekend.
 
it'll be fine like that,i just prefer using offset myself as it helps with idle temps and less power

all you have to do with offset is set an amount that equals to 1.35v when your stressing the cpu

but only add small amounts because llc will add a chunk of voltage ontop

could try +0.040v and high llc then see what it says when stressing ect if to high use less offset or add more if needed ect till you hit the 1.35v mark in stress testing
 
wazza300 said:
it'll be fine like that,i just prefer using offset myself as it helps with idle temps and less power

all you have to do with offset is set an amount that equals to 1.35v when your stressing the cpu

but only add small amounts because llc will add a chunk of voltage ontop

could try +0.040v and high llc then see what it says when stressing ect if to high use less offset or add more if needed ect till you hit the 1.35v mark in stress testing
Click to expand...

Ok then mate no problem, I will leave it as it is for tonight then as you say
it will be fine like that and I will just use the PC like I usually do and keep
HW Monitor open to monitor my temps, I have turned the fans up on my H100
so that they are going to be going a bit faster so will help with cooling
and then if I get home from work early enough tomorrow will sort the offset
out.

I appreciate your time mate and all your help.
 
Ok I just couldn't wait I got the Overclock bug now, It was cheesing me off not doing it lol.

So I got my LLC on High now instead of "Really High" lol and I have my offset at +0.30
CPU-z was reporting of voltages upto 1.359 at its highest while prime95 was running at
lowest of about 1.344.

Now the system is Idle CPU-Z is reporting voltage of 0.992v upto about 1.024v.
HwMonitor reported temps of Core1 59 Core2 61 Core3 63 Core4 59 thats the highest
while running prime, I am assuming those temps are fine for there highest point as I am
assuming that since Prime95 tears the crap out of your system I shouldn't really see
those temps while playing things like TitanFall/Rust but maybe on BF4.

How does that all look Wazza?
 
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