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3770K vs. 4470K - Page 3

post #21 of 31
Quote:
Originally Posted by gohnyanzhan View Post

There's a lot more settings to tweak. For the 3770k, it's just setting multiplier and vcore and that's it3k.jpg

I recall on SB-E you had to tweak LLC calibration as well. What new settings are there on Haswell?
     
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post #22 of 31
Quote:
Originally Posted by ChronoBodi View Post

I recall on SB-E you had to tweak LLC calibration as well. What new settings are there on Haswell?

For future reference, that's spam you responded to. It quotes part of a random post and inserts an invisible image to gather hotlinked image views. It took a bit from deepor's post, #4.
    
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post #23 of 31
adaptive voltage is the biggest reason to get a 4770k

you can finally overclock a CPU and still have it idle at .8v most of the time
post #24 of 31
Quote:
Originally Posted by Apolladan View Post

adaptive voltage is the biggest reason to get a 4770k

you can finally overclock a CPU and still have it idle at .8v most of the time


Wasn't that Dynamic Vcore anyway on SB/Ivy? They seem to do the same thing to me.
Edited by ChronoBodi - 3/10/14 at 12:09am
     
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post #25 of 31
Quote:
Originally Posted by ChronoBodi View Post

Wasn't that Dynamic Vcore anyway on SB/Ivy? They seem to do the same thing to me.
there were offsets, but it's not adaptive voltage

post #26 of 31
Quote:
Originally Posted by ChronoBodi View Post

I recall on SB-E you had to tweak LLC calibration as well. What new settings are there on Haswell?

The Haswell CPU gets a fixed VRIN voltage from the board, something approaching 2V. There's an LLC setting for the board hardware that supplies that VRIN voltage.

You get a whole lot of settings to tweak how the VRM hardware inside the CPU uses that VRIN for the various parts of the CPU. You can let the CPU cores and the uncore (with cache etc.) run at different multipliers and give them different voltage. If you tweak VRIN, the various parts in the CPU will want a different voltage to run stable, so there's opportunity to tweak a lot and improve the overclock.

A thing that's neat is that you can apparently use fixed voltage for the cores, but if you leave the power saving features enabled, the CPU will still reduce voltage when Windows lets the CPU run at reduced speed on the desktop (that might just be Gigabyte not really having fixed voltage, instead always using some sort of adaptive voltage).

On Ivy Bridge, you set VCore and enable LLC, and you are done. There's literally no other setting to touch on my board and CPU to improve stability beside VCore voltage. The 3570k I have seems to run fine up to 5GHz where it wants about 1.5V. It's pretty boring to OC it. tongue.gif

Here's a graphic about Haswell and the VRM inside it (you can change all those voltages mentioned):

post #27 of 31
Quote:
Originally Posted by deepor View Post

The Haswell CPU gets a fixed VRIN voltage from the board, something approaching 2V. There's an LLC setting for the board hardware that supplies that VRIN voltage.

You get a whole lot of settings to tweak how the VRM hardware inside the CPU uses that VRIN for the various parts of the CPU. You can let the CPU cores and the uncore (with cache etc.) run at different multipliers and give them different voltage. If you tweak VRIN, the various parts in the CPU will want a different voltage to run stable, so there's opportunity to tweak a lot and improve the overclock.

A thing that's neat is that you can apparently use fixed voltage for the cores, but if you leave the power saving features enabled, the CPU will still reduce voltage when Windows lets the CPU run at reduced speed on the desktop (that might just be Gigabyte not really having fixed voltage, instead always using some sort of adaptive voltage).

On Ivy Bridge, you set VCore and enable LLC, and you are done. There's literally no other setting to touch on my board and CPU to improve stability beside VCore voltage. The 3570k I have seems to run fine up to 5GHz where it wants about 1.5V. It's pretty boring to OC it. tongue.gif

Here's a graphic about Haswell and the VRM inside it (you can change all those voltages mentioned):


Ah... great.

It's more complicated to get an simple OC now?


Ah well, is there still sort of an set-it-and-forget OC like Sandy/Ivy?
     
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post #28 of 31
Quote:
Originally Posted by ChronoBodi View Post

Ah... great.

It's more complicated to get an simple OC now?


Ah well, is there still sort of an set-it-and-forget OC like Sandy/Ivy?

From what I gathered, you can set the uncore stuff to a low multiplier (meaning, don't let it go much over the CPU stock speed) and you won't have a problem with it. Enable VRIN LLC, set Vcore to something that won't be too much for the cooling you have, then just use the highest core multiplier that still runs stable. There's rules to guess what to do to VRIN if you find out that your cooling is good enough to use high Vcore voltages.
post #29 of 31
Quote:
Originally Posted by ChronoBodi View Post

Ah... great.

It's more complicated to get an simple OC now?


Ah well, is there still sort of an set-it-and-forget OC like Sandy/Ivy?
most of those settings can be left on auto. Vrin, vcore, uncore voltage and the multipliers are really all you have to touch.
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post #30 of 31
Wait skylake.
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