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2500k won't clock past 4.3 - Page 3

post #21 of 26
My chip needs like 1.38v for 4.5ghz so you need to bump that voltage up man. Not all SB chips are golden.

The chips that can run on lower voltage get hotter and the chips that need more voltage run cooler isn't that wierd?
It's TURBO TIME!
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It's TURBO TIME!
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post #22 of 26
Glad you noticed this. And no, it's not weird. Happened with my first 2600k which ran cool.

I dont have a technical explanation, but it has something to do with leakage. Low vid chips tend to leak more heat than the high vid chips which run cooler. I guess a stupid analogy would be a high VID chip having more rough walls (gates) which creates more resistance, preventing the voltage from being used effectively, and thus the chip runs cooler, since there is less power draw. A low VID chip, on the other hand, has smoother walls, making the cpu more responsive to voltage increases, and thus it can use more of the vcore going to the CPU, which thus raises the amount of watts the CPU releases (=heat).

It would be interesting to compare (using realtemp or hwinfo32) the amount of watts a high VID (cooler running at the same voltage) CPU that needs 1.5v to run at 5 ghz, will use in Prime, and compare it to a low VID cpu that needs 1.4v for prime at 5 ghz, while running as hot as the chip that needed 1.5v. It would be interesting to see if the power draw is almost the same, despite the vcore increase. (4.5 ghz would be easier for both samples, though).
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post #23 of 26
It's the chip,not the board.
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post #24 of 26
Quote:
Originally Posted by Dopamin3 View Post
Set the following:
  1. Spread Spectrum - disabled
  2. Vdroop Control - no vdroop (or disable, whatever setting is called)
  3. OverSpeed Protection - disabled
  4. Long duration power limit - as high as you can set it
VDroop Control can't be disabled.
OverSpeed Protection seems irrelevant even at 4.7 GHz.

Quote:
Originally Posted by Axis View Post
The max voltage setting in the bios is 1.35 however as you can see CPUz lists it as 1.328...but that also bounces from 1.328 to 1.336 over and over no matter if the VDROOP is set to High or Low(only 2 settings)
VDroop Control isn't working on MSI boards.
Quote:
Originally Posted by Falkentyne View Post
Surely you know what I mean, don't you?
The power regulation on that board just isn't made to handle pushing high clocks.
Why do you think the maximum vcore is limited to 1.35v? Some around here need 1.4v just for 4.5 ghz...

I mean, for Christ's sake, that board only has a 4 pin CPU power connector! No wonder the vcore is so limited....you'd probably blow out a mosfet or scorch the connector trying to LinX AVX at 1.5v on it at 5 ghz'ish...and how much do you think it cost MSI to put on a 4 pin connector instead of an 8 pin found on all higher up boards? Fifty cents less?
Also note that it has no mosfet cooling while all higher end MSI boards have that.
Quote:
Originally Posted by Redwoodz View Post
It's the chip,not the board.
What makes you say so?
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post #25 of 26
So I finally set mine up with the H50. Will report back in a few days with what I maxed out at. I'm at 4000MHz right now.



Quote:
Originally Posted by Falkentyne View Post
I mean, for Christ's sake, that board only has a 4 pin CPU power connector! No wonder the vcore is so limited....you'd probably blow out a mosfet or scorch the connector trying to LinX AVX at 1.5v on it at 5 ghz'ish...and how much do you think it cost MSI to put on a 4 pin connector instead of an 8 pin found on all higher up boards? Fifty cents less?

Actually it has an 8 pin connector. Might want to look at the picture again.
post #26 of 26
Here is my update, at 4500MHz right now and seems fine so far. I'm slow at overclocking so I will update final numbers in a few more days/weeks. I'm using 1.35V listed in BIOS.


Quote:
Originally Posted by Axis View Post
The max voltage setting in the bios is 1.35 however as you can see CPUz lists it as 1.328...but that also bounces from 1.328 to 1.336 over and over no matter if the VDROOP is set to High or Low(only 2 settings)

You said that you are on BIOS 1.9 Mine is still with 1.8 that shipped with the board and it has BIOS options for cpu voltage up to 1.50V. I haven't tried anything higher than 1.35V yet and that is showing as 1.304V in cpu-z (bounces up sometimes to 1.312 I believe). Also, I'm only using the front fan on my HAF 922 and I'm using a H50 so I don't have great VRM cooling

Do you still plan on buying a new motherboard?
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