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[MPC] i7 4770k 5GHz only 0.9V - Page 2

post #11 of 18
Quote:
Originally Posted by Sin0822 View Post

IMO not impossible to get that CPUz, however not very valid, but not for the reasons you might think(1.64 cpuz and above should be legit). I mean there are ways to get very low vcore 5ghz validations with LN2 and the such, not to mention idle voltages.

What's your highest overclock on air and water, and what voltages did you use? smile.gif
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post #12 of 18
Quote:
Originally Posted by sugarhell View Post

Cpu-z dont read correct the volts. Old news i think.

I think you may be right. CPU-Z on mine shows .976-1.05v and Core temp shows 1.22-1.28. Not sure which is more accurate.
post #13 of 18
Quote:
Originally Posted by Topgearfan View Post

I think you may be right. CPU-Z on mine shows .976-1.05v and Core temp shows 1.22-1.28. Not sure which is more accurate.

Core temp shows VID, That is not the same thing as Vcore which CPU-Z shows.
Quote:
Originally Posted by 2010rig View Post

What's your highest overclock on air and water, and what voltages did you use?

I guess you haven't seen this: Z77X-UP7 Performance Review and CPU/Memory Overclocking Guide.

as far as Haswell results goes obviously Sin couldn't say anything due to NDA.
Edited by sherlock - 5/13/13 at 8:16pm
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post #14 of 18
its already been confirmed that cpu-z reads the sensor for the vrm voltage, and not core voltage, as of now i've only seen accurate readings from aida64
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post #15 of 18
okay VRm from motherboard can't provide less voltage than the iVR gives to the CPU, so its not that. One major point of the iVR is to increase the input voltage to the CPU, because a larger duty cycle(vout/vin) is easier on the VRM. We were getting to a point where modern VRMs did in fact need top notch components to switch so quickly. iVR then takes in higher voltage and steps it down. It is still a buck converter.
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post #16 of 18
Calling bull. Either bad readings, or something, but no way.
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post #17 of 18
Quote:
Originally Posted by sherlock View Post

Core temp shows VID, That is not the same thing as Vcore which CPU-Z shows.
I guess you haven't seen this: Z77X-UP7 Performance Review and CPU/Memory Overclocking Guide.

as far as Haswell results goes obviously Sin couldn't say anything due to NDA.

Yeah, I guess I wasn't clear, I was asking about Haswell, fully knowing he couldn't say anything. smile.gif
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post #18 of 18
Quote:
Originally Posted by Sin0822 View Post

okay VRm from motherboard can't provide less voltage than the iVR gives to the CPU, so its not that. One major point of the iVR is to increase the input voltage to the CPU, because a larger duty cycle(vout/vin) is easier on the VRM. We were getting to a point where modern VRMs did in fact need top notch components to switch so quickly. iVR then takes in higher voltage and steps it down. It is still a buck converter.


I didn't say that the voltage was correct for the ivr, just that it's where the core voltage on cpu-z is coming from.




Notice the "cpu vrm" reading matches up perfectly with the "core voltage" of cpu-z.
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