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Deliding a 4770K (Haswell). Improving temperatures and maximizing overclockablity. - Page 20

post #191 of 1134
Quote:
Originally Posted by Cyclops View Post

My overclock is now 99% stable (24H Prime95 blend stable). The CPU Input Voltage was the missing link. I couldn't get 4.5 GHz even with 1.45 volts. Now I'm stable at 4.5 GHz with 1.38 volts and with CPU Input Voltage at 1.89 volts.

I don't have a decent chip but I managed to solve the mystery (At least in this case) by increasing the CIV from 1.75 to 1.89. With further tweaking/testing I can probably bring the CIV down even further but for a quick and dirty overclock, 1.89 is what I used.

FTFY
 
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post #192 of 1134
holy bejeezus, 20c improvement?
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post #193 of 1134
Quote:
Originally Posted by Cyclops View Post

My overclock is now 100% stable (24H Prime95 blend stable). The CPU Input Voltage was the missing link. I couldn't get 4.5 GHz even with 1.45 volts. Now I'm stable at 4.5 GHz with 1.38 volts and with CPU Input Voltage at 1.89 volts.

I don't have a decent chip but I managed to solve the mystery (At least in this case) by increasing the CIV from 1.75 to 1.89. With further tweaking/testing I can probably bring the CIV down even further but for a quick and dirty overclock, 1.89 is what I used.

How are the temps at 1.38V?

post #194 of 1134
Thread Starter 
Quote:
Originally Posted by kingduqc View Post

I'm fairly new to overclock, what is dirty OC mean? You get stable but you could lover voltage and still be stable? What Kind of score you get at 4.5 vs a 3770k? It's around the 4.7-4.8 ghz mark right?

Yeah, that's what a dirty OC is. There is still room for improvement / fine tuning.

In Cinebench, the 4770K @ 4.5 Ghz is getting 9.82 which is pretty much exactly the same as 3770K @ 4.8 GHz (9.80) which again, is exactly the same as a 2700K @ 5 GHz (9.81). It's almost poetic. For context, a 3770K @ 4.5 GHz gets 9.19. Have a look at the variety of Cinebench scores that I've been collecting:


Quote:
Originally Posted by Forceman View Post

How are the temps at 1.38V?

52-84C depending on different sort of P95 tests. I have the cooler at fairly low RPM. In Cinebench, it hits a maximum of 67C after four consecutive runs so real world temps should be even lower.
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post #195 of 1134
Quote:
Originally Posted by Cyclops View Post

Yeah, that's what a dirty OC is. There is still room for improvement / fine tuning.

In Cinebench, the 4770K @ 4.5 Ghz is getting 9.82 which is pretty much exactly the same as 3770K @ 4.8 GHz (9.80) which again, is exactly the same as a 2700K @ 5 GHz (9.81). It's almost poetic. For context, a 3770K @ 4.5 GHz gets 9.19. Have a look at the variety of Cinebench scores that I've been collecting:


52-84C depending on different sort of P95 tests. I have the cooler at fairly low RPM. In Cinebench, it hits a maximum of 67C after four consecutive runs so real world temps should be even lower.

I would say this "proves" that there is no point to change from Sandy or Ivy simply over the fact that the stable top-overclocks are roughly the same as the stable/top overclocks for 2600k/2700k/3770k. At the same time though, it's still a fairly new chip.

What kind of cooling are you using?
post #196 of 1134
If you delid, don't put back the IHS. If you use the indigo extreme, it's 99% safe.
http://www.frozencpu.com/products/9685/thr-70/Indigo_Xtreme_Precision_Engineered_Thermal_Interface_ETI_for_Core_2_LGA_775_-_2_Pack.html
This thing doesn't require a lot of pressure for perfect contact and it protects the cpu if anything goes wrong.
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post #197 of 1134
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post #198 of 1134
Quote:
Originally Posted by Cyclops View Post

Yeah, that's what a dirty OC is. There is still room for improvement / fine tuning.

In Cinebench, the 4770K @ 4.5 Ghz is getting 9.82 which is pretty much exactly the same as 3770K @ 4.8 GHz (9.80) which again, is exactly the same as a 2700K @ 5 GHz (9.81). It's almost poetic. For context, a 3770K @ 4.5 GHz gets 9.19. Have a look at the variety of Cinebench scores that I've been collecting:

Can you give more information on temperatures and voltage?

My Sandy Bridge chip would probably realistically be able to hit 4.8-4.9 GHz on my cooler (basically the same as the NH-D14). My chip runs really hot.

Does Haswell usually do 4.5GHz on a closed loop?
Edited by Art Vanelay - 6/8/13 at 7:50pm
post #199 of 1134
Quote:
Originally Posted by EpicAMDGamer View Post

Quote:
Originally Posted by Cyclops View Post

Quote:
Originally Posted by EpicAMDGamer View Post

I believe you mean Loyal not Royal customers.

That's relative to this thread how?

Quote:
Originally Posted by AlaskaFox View Post

Quote:
Originally Posted by dr/owned View Post

You can crack or chip the die if you torque down the waterblock unevenly. I spent 10 minutes screwing down my waterblock a quarter turn at a time.

this is what i figured would happen for on die application.
i figure im not fearful of it, but i didnt know if thats what people did.
not extremely different from reapplying? still putting pressure on the die that was not manufactured.
Quote:
Originally Posted by Cyclops View Post

That's relative to this thread how?

its not.. sometimes i think people just want to feel like their ability to capture gramatical inconsistancies matter..

Okay, yeah, I'm so wrong to correct a big mistake in the OP of a popular thread.

I guess I wouldn't want anyone to tell me if I had a similar error too.

no one cares, go away EpIc AMD GamEr DooD
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post #200 of 1134
Quote:
Originally Posted by Cyclops View Post

Yeah, that's what a dirty OC is. There is still room for improvement / fine tuning.

In Cinebench, the 4770K @ 4.5 Ghz is getting 9.82 which is pretty much exactly the same as 3770K @ 4.8 GHz (9.80) which again, is exactly the same as a 2700K @ 5 GHz (9.81). It's almost poetic. For context, a 3770K @ 4.5 GHz gets 9.19. Have a look at the variety of Cinebench scores that I've been collecting:


52-84C depending on different sort of P95 tests. I have the cooler at fairly low RPM. In Cinebench, it hits a maximum of 67C after four consecutive runs so real world temps should be even lower.

What is your batch for you CPU I have a L307B and it also seems to also be stuck at 4.5 (1.35V).
Edited by rancor - 6/8/13 at 8:44pm
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