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*Official* Intel DDR4 24/7 Memory Stability Thread - Page 151

post #1501 of 5753
Thread Starter 
Quote:
Originally Posted by QuantumX View Post

QuantumX---i7-6700K @ 4.7/4.5---3340Mhz---C15-15-15-35-1T---1.47v---SA 1.15v---IO 1.38v---Stressapptest 1H





I would try and lower that IO voltage personally
post #1502 of 5753
Quote:
Originally Posted by Silent Scone View Post

I would try and lower that IO voltage personally

I know this doesn't relate to the OP's question, but what IO voltage would you recommend not exceeding on X99? I definitely seem to gain stability during training up to 1.10V, not sure if it would be wise to exceed that 1.10V.
post #1503 of 5753
Thread Starter 
Quote:
Originally Posted by Desolutional View Post

I know this doesn't relate to the OP's question, but what IO voltage would you recommend not exceeding on X99? I definitely seem to gain stability during training up to 1.10V, not sure if it would be wise to exceed that 1.10V.

I've never had to adjust this manually on X99. Perhaps 1.2v would be a good general rule, I can't imagine ever needing this much on this platform for a daily overclock
post #1504 of 5753
Quote:
Originally Posted by Silent Scone View Post

I've never had to adjust this manually on X99. Perhaps 1.2v would be a good general rule, I can't imagine ever needing this much on this platform for a daily overclock

Yep, I was definitely surprised when I could only get past training by raising it to 1.10V for XMP. So there was a definite gain in stability by manipulating this voltage. I've played it safe thus far keeping to 1.10V. Everything I read online seemed to say that VCCIO shouldn't affect stability.
post #1505 of 5753
do you really see the diff between 2400 n 3000?
post #1506 of 5753
Quote:
Originally Posted by GRABibus View Post

So which value tras should I try ?
I base on tRAS = tCL + tRCD + tRP (+/- 1) formula ?
Means tras=12+12+13=37 or 36 ?
ras=cas+rcd+rtp. As Praz and Kimir posted. There is a little play around the value as you indicate, but at some point, the timing error gets corrected and we cannot know the substituted value.
More to th epoint, OCCT is not a test of ram stability - tho completely borked up ram will crash. AID64 just takes a very long time ot reveal errors. Use HCI memtest or google stressapptest. thumb.gif
Quote:
Originally Posted by Desolutional View Post

I know this doesn't relate to the OP's question, but what IO voltage would you recommend not exceeding on X99? I definitely seem to gain stability during training up to 1.10V, not sure if it would be wise to exceed that 1.10V.
Early on, devilhead and I both found that increasing both VCCIO voltages a notch or two helped to stabilize some of the early Hynix sticks at 3333 on 125 strap. Since then, I just run both at 1.075V. Done this with about 5 or 6 ram kits - maybe more of a habit than anything else at this point, but it has not hurt. smile.gif


Edited by Jpmboy - 5/31/16 at 6:02pm
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post #1507 of 5753
Quote:
Originally Posted by Desolutional View Post

Yep, I was definitely surprised when I could only get past training by raising it to 1.10V for XMP. So there was a definite gain in stability by manipulating this voltage. I've played it safe thus far keeping to 1.10V. Everything I read online seemed to say that VCCIO shouldn't affect stability.

I run vccio @ 1.05 manually on my OC and never had training problems. Lucky I guess?
post #1508 of 5753
Quote:
Originally Posted by Jpmboy View Post

ras=cas+rcd+rtp. As Praz and Kimir posted. There is a little play around the value as you indicate, but at some point, the timing error gets corrected and we cannot know the substituted value.
More to th epoint, OCCT is not a test of ram stability - tho completely borked up ram will crash. AID64 just takes a very long time ot reveal errors. Use HCI memtest or google stressapptest. thumb.gif
Early on, devilhead and I both found that increasing both VCCIO voltages a notch or two helped to stabilize some of the early Hynix sticks at 3333 on 125 strap. Since then, I just run both at 1.075V. Done this with about 5 or 6 ram kits - maybe more of a habit than anything else at this point, but it has not hurt. smile.gif


Considéring memtest, I read That it is better to Run as Many instances as cores we have (6 instances for a 6 cores CPU).
Do we have to Run 12 instances With HT enabled on 6 cores CPU ?

Other question : which amount of RAM for instances ?
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post #1509 of 5753
Yes, 1 instance per thread, so indeed 12 instance with your cpu and HT enabled. wink.gif
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post #1510 of 5753
Quote:
Originally Posted by Kimir View Post

Yes, 1 instance per thread, so indeed 12 instance with your cpu and HT enabled. wink.gif

Ok.
And How Many amount of RAM for each instance ?
It is advised to use "unavailable amount of RAM". I let this "unavailable amount of RAM" for the 12 instances ?
Or should I put my total 16GB divided by 12 for each instance (1333MB for each instance) ?
Edited by GRABibus - 6/1/16 at 2:38am
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