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Overclocking i7-4930k Help - Page 77

post #761 of 1417
X-79 Deluxe...

How high can I safely go on VCCSA?
post #762 of 1417
Quote:
Originally Posted by Silent Scone View Post

What board? Just set VCCSA manual voltage to 1.115 if unstable increase incrementally until it is

X-79 Deluxe...

How high can I safely go on VCCSA?

Do I have to up PLL as well, it's now on 1.05...
Edited by Mercy4You - 3/24/14 at 6:14am
post #763 of 1417
Quote:
Originally Posted by Mercy4You View Post

X-79 Deluxe...

How high can I safely go on VCCSA?

Do I have to up PLL as well, it's now on 1.05...


Ideally you want to keep it at or below 1.2v as a maximum, but 1.25 would be my absolute maximum for 24/7 usage. Any more then you're best off backing off the overclock

As I said in my other posts, for 4.77 on 129 BCLK and VRAM 16GB @ 1204 C9 CR1 I need 1.2v VCCSA. Most XMP profiles will set between 1.2V - 1.3V by default, but they're known to be aggressive. Every IMC has different tollerences though, but your configuration shouldn't be a push. 1.115v - 1.150 ish should be doable or maybe slightly higher.
Edited by Silent Scone - 3/24/14 at 8:31am
post #764 of 1417
Quote:
Originally Posted by Silent Scone View Post

Ideally you want to keep it at or below 1.2v as a maximum, but 1.25 would be my absolute maximum for 24/7 usage. Any more then you're best off backing off the overclock

As I said in my other posts, for 4.77 on 129 BCLK and VRAM 16GB @ 1204 C9 CR1 I need 1.2v VCCSA. Most XMP profiles will set between 1.2V - 1.3V by default, but they're known to be aggressive. Every IMC has different tollerences though, but your configuration shouldn't be a push. 1.115v - 1.150 ish should be doable or maybe slightly higher.

Ok, good to know XMP is altering the VCCSA voltage, meaning that when I want to change that voltage I have to change the timings manually.

Does XMP influence other voltages too?
post #765 of 1417
Quote:
Originally Posted by Mercy4You View Post

Ok, good to know XMP is altering the VCCSA voltage, meaning that when I want to change that voltage I have to change the timings manually.

Does XMP influence other voltages too?


VRAM volts and possibly VTT but can't remember on the latter. Depends on the RAM manufacturer for set voltages though. Corsair are very aggressive, others might be not so much.
post #766 of 1417
any way to read the VCCSA voltage in windows ?
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post #767 of 1417
Quote:
Originally Posted by Silent Scone View Post

VRAM volts and possibly VTT but can't remember on the latter. Depends on the RAM manufacturer for set voltages though. Corsair are very aggressive, others might be not so much.

I am interested to know how people here conclude their overclock is stable or not. I can use Intel Burn and get a 'stable', while Prime 95 'Blend' crashes.

When I use Prime 'small FFT's' I can go way down with my Vcore...
post #768 of 1417
Quote:
Originally Posted by Mercy4You View Post

I am interested to know how people here conclude their overclock is stable or not. I can use Intel Burn and get a 'stable', while Prime 95 'Blend' crashes.

When I use Prime 'small FFT's' I can go way down with my Vcore...

Prime95 Blend custom with a lot of RAM.
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post #769 of 1417
Quote:
Originally Posted by Mercy4You View Post

I am interested to know how people here conclude their overclock is stable or not. I can use Intel Burn and get a 'stable', while Prime 95 'Blend' crashes.

When I use Prime 'small FFT's' I can go way down with my Vcore...

I just use my pc for what i want to do, if it runs it is stable if it doesn't It isn't. Not scientific by any stretch of the imagination but it is practical.
post #770 of 1417
Quote:
Originally Posted by Silent Scone View Post

As low as you can get it stable? Try VVT 1.1 - VCCSA @ 1.15 at first and work your way down / up.

Stock CPU you could run that kit in auto.
Quote:
Originally Posted by the9quad View Post

I just use my pc for what i want to do, if it runs it is stable if it doesn't It isn't. Not scientific by any stretch of the imagination but it is practical.
Quote:
Originally Posted by jasjeet View Post

Prime95 Blend custom with a lot of RAM.

Yep, that's what I thought biggrin.gif.

I've seen a BIG difference in Prime 95 version 27.9 order older versions. Stable in older versions, 1 core 'crashes' within the first 10 runs of the first Blend test version 27.9 smile.gif

Prime95 stops a core when the time does not meet the expectations of a calculation, while other cores proceed.

Does anyone know how this works in gaming, will it still be a good overclock as long as the BSOD doesn't appear?
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