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i5 750, 4.0Ghz and above.. Suggestions? - Page 2

post #11 of 25
Quote:
Originally Posted by Plex View Post
Try to use odd-numbered multipliers for these chips, they do funky things with even ones (like your x20).
Quote:
Originally Posted by PCSarge View Post
then mine should be funky? im running 20x200 o.o stable for the longest time.

*sings* wooo ohhh ohhh for the longest time
That said: I'm using 20. So YMMV.
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post #12 of 25
Thread Starter 
Really have the feeling its my damn Asus board, i just cant adjust and finetunes things as i want.

Gonna try the odd multiplier way, a 19x210 or so.
starting at a Vcore of 1.40v / 1.30 IMC and working down again.
Done this a thousand times now, this is frustrating!
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post #13 of 25
I would start by testing the base clock and memory. Leave the bclk at 200 and your memory at 1600mhz and turn down the multi to something like 12 or 14x and run a few loops of Linx (I don't consider 5 stable). With my most recent overclock I was seeing Linx fail after around 12 passes, I've seen if fail after much more than that in the past. That will rule the IMC and memory out of the equation. After that you will just need to adjust the multi and vcc.

I would also try and lower the vtt a bit. I would be willing to bet that you don't need 1.25v. Intel recommends a max of 1.19v vtt for these chips, thats just something to keep in mind.

After you get the bclk stable start with something like 3.8ghz or even 3.6ghz to see how much vcc(core voltage) that you need to get that stable before going straight for 4ghz and crossing your fingers.
Edited by BababooeyHTJ - 4/8/11 at 1:17pm
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post #14 of 25
Thread Starter 
Quote:
Originally Posted by BababooeyHTJ View Post
I would start by testing the base clock and memory. Leave the bclk at 200 and your memory at 1600mhz and turn down the multi to something like 12 or 14x and run a few loops of Linx (I don't consider 5 stable). With my most recent overclock I was seeing Linx fail after around 12 passes, I've seen if fail after much more than that in the past. That will rule the IMC and memory out of the equation. After that you will just need to adjust the multi and vcc.

I would also try and lower the vtt a bit. I would be willing to bet that you don't need 1.25v. Intel recommends a max of 1.19v vtt for these chips, thats just something to keep in mind.

After you get the bclk stable start with something like 3.8ghz or even 3.6ghz to see how much vcc(core voltage) that you need to get that stable before going straight for 4ghz and crossing your fingers.
Thanks, gonna try that later on.
Looking into other mainboards, got my eyes on:

- EVGA P55 LE
- ASUS P7P55D Deluxe

Any other good mainboards in that pricerange that i should take a look at? I really think its my current mainboard that is bottlenecking me.
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post #15 of 25
Here are my OC settings on my 4GHz 24/7 OC(Completely stable), I run an ASUS board as well so the BIOS shouldn't be too different. Feel free to copy mine.



CPU Configuration:


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post #16 of 25
Quote:
Originally Posted by EpicPie View Post
Here are my OC settings on my 4GHz 24/7 OC(Completely stable), I run an ASUS board as well so the BIOS shouldn't be too different. Feel free to copy mine.
Thats never really good advice. Also your PCH and VTT(IMC) seem much higher than necessary.
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post #17 of 25
Thread Starter 
Bleh.......... Getting sick and tired of this, nothing seems to work and if it does then temps are way off.. i have to pump up my Vcore to 1.39750 to be stable at 4.0Ghz, resulting in temps around 80c after just 5(!) Linx runs.

I am really thinking of replacing my mainboard because i am 99% sure my board is causing this! I am using this p7p55d-LE (Light edition?) version, which is the budget p7p55d from Asus, i think this board doesn't have all the nice overclock functions the other boards have.

Now i got some cash to spend, but its limited ofcourse..
Been thinking of either going for a great mainboard such as:

EVGA P55 FTW:
http://www.evga.com/products/moreInf...board%20Family
Which is a topnotch mainboard with tons of cool features and great overclock possibility's, Crossfire compatible so i could add a 2nd 5850 later on... and go for a waterloop as soon as i got the cash for it?

Or go for a less expensive board such as:

P7P55D Deluxe:
http://www.asus.com/product.aspx?P_ID=yZD4yFdLw1l3gZ35
Together with a XSPC X2OKIT750 RASA Dual 240 WaterCooling Kit?

What do you think? its really temping to go for both the watercooling and the EVGA P55 FTW, but my wallet wont allow that right now..

Is the upgrade worth a 300$?

*Shrugs*
Edited by rck1984 - 4/8/11 at 5:34pm
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post #18 of 25
What is the vcore as reported by cpu-z under load?

I wouldn't push my chip that hard on a board with no cooling on the mosfets. That said a new board is no guarantee that you will hit 4ghz at a lower vcc.

Spend $20 or so on some vrm cooling and settle for 3.8ghz or so. A couple of packs of enzotech mos c1 sinks will do a good job.

Or spend less than $100 on a decent p55 board on ebay and cross your fingers that you can clock the chip higher with less voltage. You can find a P55a UD3 for not much more than $50.

I wouldn't spend too much money on overclocking a mainstream last generation cpu.
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post #19 of 25
Thread Starter 
Quote:
Originally Posted by BababooeyHTJ View Post
What is the vcore as reported by cpu-z under load?

I wouldn't push my chip that hard on a board with no cooling on the mosfets. That said a new board is no guarantee that you will hit 4ghz at a lower vcc.

Spend $20 or so on some vrm cooling and settle for 3.8ghz or so. A couple of packs of enzotech mos c1 sinks will do a good job.

Or spend less than $100 on a decent p55 board on ebay and cross your fingers that you can clock the chip higher with less voltage. You can find a P55a UD3 for not much more than $50.

I wouldn't spend too much money on overclocking a mainstream last generation cpu.
Been reading nothing but good things about the EVGA board, i5 750 is still considered a very nice cpu for gaming though. And i wont be buying a new comp any soon, i wanted to do it before but the new 2011 socket wont be out untill late this year as far as i know and i will atleast wait for that as it looks now.

Thanks for your advice again tho
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post #20 of 25
Read my post? -___-
     
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