can anyone tell me guide to overclock ?

I think you should read post #1.

I try to understand all the explanation regarding all in page 1 , but it seems to be confusing , but from what i learn is that the hertz X multiplier will give you your final value , and the rest i do not know what is for , so i just want to know what should i keep an eye on and what should not .

I'm very very new to water cooling.
I don't OC in the past, and since I recently got hook up to WC I tell myself why not try how far I can go.

Purpose : Other than benchmarking / showing off, I do 3D rendering a lot (Interior Designer here)

Ok, cut the crap short.

My water cooling setup is as below

RASA 750 RX240X KIT | EX240 RADIATOR
SCYTHE GENTLE TYPHOON x 4 | XSPC TUBING
ENZOTECH COMPRESSION FITTINGS | RAYSTORM CPU & GPU WATERBLOCK

Loop design :


In my room I have air-con set to 21c - 24c

Result, which I think it's the max I can go.
1.46v @ 4.8ghz (passed 1 hour Prime95 small FFT.

Will do a 24 hour test after getting advice here.

Photos :


Okay, so here's the problem.
1.) I think I either got a bad chip or something is wrong with my loop.
My CPU idle @ around 37-40 (PLEASE CONSIDER MY AMBIENT TEMP)
When it's full load on 4.8ghz @ 1.46v it goes up to 70c - 80c

Can anyone of you help me identify the problem? Or that's the max I can go with the radiator I'm having now. (I'm still new so I tell myself to upgrade slowly in the future)

Another question is, why do core #0 get so much lower temp than the other 3, around 10c lower if you notice in the picture provided.

I will appreciate your input here!

Full specs on my sig!

This post has been edited by Qavs: Jun 24 2012, 08:34 PM

oops something wrong with your wc setup the idle temps look too high
Pls resit the CPU wb & check whether your loop is fully out of bubbles
alright as per PM conversation it is known that you initialized the realtemp late so the load temps look quite normal.
nothing wrong with the core0 vs others as I believe all of us getting the same reading.
Reducing CPU PLL to 1.5-1.75v would decrease the temp abit
get another set of fans for push pull setup.
add some rads or upgrade to triple/quad rad.

This post has been edited by owikh84: Jun 24 2012, 10:38 PM

Hmm, so regarding the idle temp it's pretty normal for my WC setup?
Only fan? I have both typhoon pushing air out.
Using 1,48 to achieve 4.8 consider a bad chip or not?

Sigh, I've seen people getting to 4.8 with much lower voltage in OCN.

don't know how's the airflow of your casing but i believe you should get as low as 30-35C under that ambient temp.
that's an average chip i got like 9 out of 10 of CPU like this
my golden 2600K chip could do 5.0 @ 1.42v on load.
you're actually running at degradation zone
better find a suitable clock stable as low as 1.4v & load temp less than 80C to prevent degradation.

This post has been edited by owikh84: Jun 24 2012, 10:57 PM

I'm actually pretty new to this OCing and WCing thing.

I think you can see my loop design from the picture above,
airflow I think should be ok-good. Since cable are well managed by Cyntrix, exhaust fan at the back of casing (stock from CM Storm Trooper)
Both rad using push style.
I'm thinking of upgrading to 360 or 480 as you suggested, but did some google and 480 require modding of the case and I don't think I'm capable of doing it.
Took a peek from the top and I see there's a little bit space left to put fan for push-pull.

Anyway your 2600k still available?

The golden 2600K was sold to a forumer long2 time ago.
wc is seriously poisonous you will not stop upgrading.
just don't expect too much on a kit that's worth below RM1k.
Get a quad rad & mount it at the rear of casing.

Haiya no luck
Anyway, I lowered my core speed to 4.7ghz with 1.43v getting temp MAX 78 after 40min of prime small fft.
Should I stick to this or lower more for 24/7 usage?
It's still an improvement over the high voltage and >80 temp previously @ 4.8

Daily usage you wont hit 78C actually this core temp only apply to stress test like LinX and Prime. I would stay with 1.4v on load just because SB will degrade very fast.

wat is the best for i5 2500k ya?? i means how far can go for this?

<1.4 Can only hit 4.6ghz
Kinda disappointing as this is my first WC rig and didn't even hit good result. Probably a bad chip I guess, the chip is very power hungry. Anything below 1.3 won't even load pass bios.

agreed on the luck part you must be the luckiest guy to get the golden chip from retail in which i am not that's why i am willing to fork out RM2.3k to buy the golden 2600K from a UK guy.

And dont be so upset about the performance of your wc as it is still better and look sexier than the air cooler.

This post has been edited by owikh84: Jun 25 2012, 09:53 AM

Now trying 1.37 @ 4.6ghz, temp stays around 65. If everything is stable might as well just stick with it and wish for better luck of winning the lottery of golden chips in the future.
It's pretty crazy this chip need additional of 0.6v to move 100mhz more.

This post has been edited by Qavs: Jun 25 2012, 09:53 AM

The relationship between vcore vs speed is more like exponential rather than a linear proportion. Same like other platforms & DRAM clock vs vdimm.

This post has been edited by owikh84: Jun 25 2012, 09:59 AM

Yeah, I guess that's the case.
Anyway, does a SB degrade over high voltage or high temp? Or both? and how much improvement will I see if I upgrade my pump to MCP-355 from rx240kit stock pump?
Looking forward to learn a lot from you man, initially just wanted to get a rig from Cyntrix, let him OC for me to the max and learn how to maintain the WC system just for the sake of look.
After getting the rig not more than 1 day already gatal to play around with OCing and benchmarking. Well I guess I'm more to a 'learn how to fish' than a 'give me a bucket of fish'

Everbody including me is still learning

Degradation happen when high vcore applied and sky high temp, especially when stressed.

MCP355 is a stronger pump having higher head pressure so expect it to move more coolant at faster way and improve your overall loop performance.

if you change from the stock pump of the rasa kit to mcp355, your temps may reduce from 1-2C. Not a major jump compared to extra rad or faster fans
Normally XSPC stuff are high flow rate and do not restrict much. The heat dump from the mcp355 also will factor in

I'm actually running the rx240 with gt 1800 push
and ex240 pull

is 73 max on 4.6 @ 1.39v acceptable at all for my setup? aircon room @ 21c
Really temp to switch the ex240 to rx360
Now rx240 for CPU and ex240 for gpu, not dual loop la.

then rx360 for the cpu and rx240 for the gpu
and also switching the pump too.

Went to BIOS and reset everything, auto voltage for my cpu is 1.37, bloody hungry chip

This post has been edited by Qavs: Jun 27 2012, 01:52 AM