2500K Max OC???

P4Clock · 30 Nov 2014 at 14:48

jacob1995knight said:
WOW! that sucks real shame

its may be down to may board are a setting this i have wrong but its a good low voltage clocker upto 4.6Ghz but then

all over setting are t auto, any change and the clock is unstable, i will have to have a play latter but i am happy at 4.6Ghz it will be better than the none k chip i replaced

jacob1995knight · 30 Nov 2014 at 15:01

P4Clock said:
its may be down to may board are a setting this i have wrong but its a good low voltage clocker upto 4.6Ghz but then

all over setting are t auto, any change and the clock is unstable, i will have to have a play latter but i am happy at 4.6Ghz it will be better than the none k chip i replaced

Just to clarify, you do have turbo mode enabled? as this is key for high overclocks?

P4Clock · 30 Nov 2014 at 15:33

jacob1995knight said:
Just to clarify, you do have turbo mode enabled? as this is key for high overclocks?

that would be a no :eek:

jacob1995knight · 30 Nov 2014 at 15:54

P4Clock said:
that would be a no

OM*G SON!!! get it enabled

have fun and watch your temps

P4Clock · 30 Nov 2014 at 17:01

What difference will it make? i have EIST disabled, and that in turn disables Turbo boost.
But i do have Enhanced turbo boost enabled. that forces the CPU to run at max speed all the time

jacob1995knight · 30 Nov 2014 at 17:11

The 2500k turbo mode puts the standard clock of 3.3Ghz up to 3.7Ghz, when i first got my 2500K, i had turbo mode disabled, i could only get to around 4.5 / 4.6Ghz, then turbo mode enabled gave be a large overclock ability.

However, with some motherboards its different, im running the Gigabyte GA-Z77-D3H, witch in turn has a large overclock adjustment system.

What motherboard are you running? see if it has turbo mode without having to enable EIST?

P4Clock · 30 Nov 2014 at 17:26

MoBo: z77a-GD65
if i disable EIST, it removed the option for Turbo boost

P4Clock · 30 Nov 2014 at 17:31

ok i see what your saying now.

in my bios there is and option screen where you can set the power limit for the CPU. it was set to 125w with boost back in is not 1011w. that as to lift the lid on some over clocking

jacob1995knight · 30 Nov 2014 at 17:31

P4Clock said:
MoBo: z77a-GD65
if i disable EIST, it removed the option for Turbo boost

You want Enhanced Intel Speed Step Technology enabled, this is what gives you the ability to overclock higher, without it, your stuck at 4.6Ghz

jacob1995knight · 30 Nov 2014 at 17:34

P4Clock said:
ok i see what your saying now.

in my bios there is and option screen where you can set the power limit for the CPU. it was set to 125w with boost back in is not 1011w. that as to lift the lid on some over clocking

Yes

we got there in the end, have a play with overclocking now, just dont go to far and watch your temperatures

Threepwood · 30 Nov 2014 at 17:52

And when you have found your absolute highest clock that you are happy with, have a play with turning off two cores and seeing what your highest overclock is then. You might/should be able to see beyond 5Ghz.

But with play and further tinkering, considering you are water cooled you might still find that on 4 cores... Best of luck!

jacob1995knight · 30 Nov 2014 at 17:54

Threepwood said:
And when you have found your absolute highest clock that you are happy with, have a play with turning off two cores and seeing what your highest overclock is then. You might/should be able to see beyond 5Ghz.

But with play and further tinkering, considering you are water cooled you might still find that on 4 cores... Best of luck!

Can you even turn off cores with the 2500K? also why :confused:

i mean, its quad core from factory, why would you downgrade?

stooeh · 30 Nov 2014 at 17:58

My old 2500K did 4.6 @ 1.35V

Make sure you have internal PLL overvoltage enabled and try upping the VCCIO/VTT to about 1.15V

P4Clock · 30 Nov 2014 at 18:52

Pow!
there is life in the old beast

P4Clock · 30 Nov 2014 at 19:03

i think 5ghz is the max on 4 cores, i have vcore to 1.55 and it would not post so stopping there.

Edit
Stable 4.9Ghz @ 1.475v, idle 35c, Linx load 63c - 3d mark load 64c
my temps look to be more stable now, and i am 300mhz faster with volts

Threepwood · 30 Nov 2014 at 19:31

jacob1995knight said:
Can you even turn off cores with the 2500K? also why i mean, its quad core from factory, why would you downgrade?

Yes, you can turn off two cores on the 2500k.

Why? Because you can then achieve even higher clocks on those two cores than you could with 4.

It is not downgrading, it is turning two cores off so two cores can go faster. Great for anything that is single threaded, benchmarking...games... etc.

Gz, P4.... would be nice to see under 1.45v but only if you want to live on the safe side. But if that means only a loss of 0.1Ghz and going down to 4.8... it is not a big loss.

Anyway, now turn two cores off... leave everything the same but increase your multiplier to x51, x52 etc until no boot.

jacob1995knight · 30 Nov 2014 at 19:45

P4Clock said:
Pow!
there is life in the old beast

Thats really good

well done for finally getting there

p.s

(your welcome

)

P4Clock · 30 Nov 2014 at 20:08

Threepwood said:
Gz, P4.... would be nice to see under 1.45v but only if you want to live on the safe side. But if that means only a loss of 0.1Ghz and going down to 4.8... it is not a big loss.

Anyway, now turn two cores off... leave everything the same but increase your multiplier to x51, x52 etc until no boot.

Lol i got 4.9 @ 1.445

, i will do two core testing in 5 any advice on what numbers to turn off or is it just ant 2.

jacob1995knight said:
Thats really good well done for finally getting there
p.s
(your welcome )

jacob1995knight · 30 Nov 2014 at 20:17

Ah, thought i would have ago P4Clock

What dya think?

Using the rig at 5Ghz now as im writing this with CPU temps of:

38
39
41
40

P4Clock · 30 Nov 2014 at 20:38

your temps are very high but its a good clockers, my temps are low and i have an okl clocker

@ Threepwood
Unstable at 5ghz, and would not boot and anything over 5ghz on 2 or 1 cores