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*Official* Intel DDR4 24/7 Memory Stability Thread - Page 18

post #171 of 5535
Quote:
Originally Posted by Silent Scone View Post

More likely to be cache RE Prime. I would try it firstly. If nothing else is working just stick to what you can do, or loosen some of the secondary timings.

I'll try bumping CPU Volts instead then a little. I was perfectly prime stable running at 3200mhz. I suppose the increase in ram could have thrown that out now.
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post #172 of 5535
Thread Starter 
Quote:
Originally Posted by llantant View Post

I'll try bumping CPU Volts instead then a little. I was perfectly prime stable running at 3200mhz. I suppose the increase in ram could have thrown that out now.

If stable in stress app with 3200 settings but Prime is failing then by default I would be looking at cache and core, yes. I wouldn't focus too much on Prime stability personally but people will do anyway
post #173 of 5535
Quote:
Originally Posted by Silent Scone View Post

If stable in stress app with 3200 settings but Prime is failing then by default I would be looking at cache and core, yes. I wouldn't focus too much on Prime stability personally but people will do anyway

Stable at 3466 in stressapp but prime failed.

Stable at 3200 in both stressapp and prime.

I tried increasing core cache volt and lowered SA and vccio and it went unstable again.

So put sa and vccio back up to 1.20 and 1.25 and lowered my core back to what I knew was stable and it passed again.

And by me saying prime I mean the ram and chipset test that's 2048 to 4096 30mins per test 90% ram
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post #174 of 5535
Thread Starter 
*Shrug*. Do you do anything on the machine that pulls those kinds of loads? Try with cache at defaults.
post #175 of 5535
Quote:
Originally Posted by Silent Scone View Post

*Shrug*. Do you do anything on the machine that pulls those kinds of loads? Try with cache at defaults.

Nah I do not.

I just always have done ram/chipset test at the end when I'm over locking mem. Granted that was on sandy and I'm a bit behind the time ha!

I just thought it was something worth point out.

I will try with default cache but I am 100% stable at 3200. It's testing 3466 that it's failing but as I said passed stressapp.
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post #176 of 5535
Lowered cache to stock. Same issue. Not stable with vccio and SA voltage on 1.15 and 1.2.

Switch vccio and SA voltage to auto which gives me 1.25 and 1.3 and put my cache back up to 4600 and no errors in prime custom test.

Also things feel snappier so I was def undervolting my vccio and SA and as you said originally it's best left on auto. Just strange that it passed an hour of stressapp.

The only thing tho is I'm unsure I want to run 1.25 1.3 24/7 mad.gif
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post #177 of 5535
Quote:
Originally Posted by llantant View Post

Just strange that it passed an hour of stressapp.

Hello

Nothing strange at all. The Google memory test isolates the memory testing form the rest of the system just as it is designed to do.
post #178 of 5535
Quote:
Originally Posted by Praz View Post

Hello

Nothing strange at all. The Google memory test isolates the memory testing form the rest of the system just as it is designed to do.

How does it require more SA and vccio in order to not get rounding errors in prime ?
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post #179 of 5535
Thread Starter 
Quote:
Originally Posted by llantant View Post

How does it require more SA and vccio in order to not get rounding errors in prime ?

Because As Praz has said, SAT is very good at isolating memory. Other tests that have heavier interaction with other components are more likely to topple other aspects of the overclock if unstable. Try running Prime with your 3466 settings with the core and uncore at stock.

I would be interested to know if this still fails. I've yet to find anything that shows memory instability after passing one or two hours of SAT
post #180 of 5535
Quote:
Originally Posted by Silent Scone View Post

Because As Praz has said, SAT is very good at isolating memory. Other tests that have heavier interaction with other components are more likely to topple other aspects of the overclock if unstable. Try running Prime with your 3466 settings with the core and uncore at stock.

I would be interested to know if this still fails. I've yet to find anything that shows memory instability after passing one or two hours of SAT

Will do it later and report back thanks,

By the would an increase in ram speed need a bump core voltage to remain stable. Like if I'm stable at 4700 3200 at 1.37v then I would technically need 1.4v core I run the ram at 3466?

If I remember rightly on my sandy I needed a voltage bump on CPU to go from 1600 to 2133 (along with vccio ofc).
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