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[OFFICIAL] FX-8320/FX-8350 Vishera Owners Club - Page 4488

post #44871 of 67911
With my 1333 ram the stock timings are 9-9-9-24 and they run just fine like that. However in order to OC to them and get stable results I have to go to 9-9-9-27 and bump the D-RAM voltage up.
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post #44872 of 67911
Ram is very different stick to stick and SPD timings vary quite a bit. From 10-12-12-31@ 2400 or 6-7-6-24 @ 2000. It all depends on the ram chips. Learning to Oc your ram takes time and patience and needs to be tested just like a CPU OC if you want stability. It's also a quick way to mess up an OS or even your bios.
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post #44873 of 67911
Well I tried Tras at 27 no go was more unstable.... blue-screened/ thread exception error etc....

Earlier was even getting NTFS errors...
Edited by RJ-Savage - 1/6/15 at 3:58pm
post #44874 of 67911
RAM overclocking can be really finicky, some companies bin their IC's really tight where going much beyond the specs will be unstable. I would try to keep it close to their JEDEC or XMP profile, unless you know you have some overclocking friendly IC's.
post #44875 of 67911
I feel an overwhelming urge to post this link again...

http://forum-en.msi.com/faq/article/ddr3-memory-timings-explained

^^^ for those of you having ram clocking issues.

this is good for a ball park due to the difference in IC from brand to brand.
Edited by FlailScHLAMP - 1/6/15 at 4:14pm
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post #44876 of 67911
Quote:
Originally Posted by FlailScHLAMP View Post

I feel an overwhelming urge to post this link again...

http://forum-en.msi.com/faq/article/ddr3-memory-timings-explained

^^^ for those of you having ram clocking issues.

this is good for a ball park due to the difference in IC from brand to brand.

Bookmarked, thank you. thumb.gif
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post #44877 of 67911
I was running 2133MHz @ 9-11-10-28 on the 860K so hopefully I can do the same with the 8350. The modules are actually CAS 10 2400MHz but they come up with errors at their rated speeds/timings. I'll probably RMA them when I get errors at lower speeds also. I wonder if running on 2400MHz will perform any better than 2133MHz on Vishera CPUs
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post #44878 of 67911
I think your best bet is 2133MHz as tight as possible on the timings.
post #44879 of 67911
8320E clocked at 4.5GHz with 1.344v passed 12 hours of prime then failed IBT. What seems to have fixed that is higher CPU/NB voltage.

Both RAM and NB at default speeds, so I was surprised that made a difference. Maybe I should not be surprised?

Edit: At 4.6 1.384v I pass IBT, and also one and a half hours of Small-FFT on prime. But I stopped the prime test because of my core temp. It reached 66C rolleyes.gif
Edited by pshootr - 1/6/15 at 6:41pm
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post #44880 of 67911
ok so i upped my ram voltage to 1.67 and dropped the refresh rate and the response time to 160 from 300 so far so good... also is at 1t timing... gonna try ibt again and see if it fails if it does ill look into possibly higher voltage although i dont like the idea of my 8320e taking more voltage than my 8320 did at 4.8 frown.gif

EDIT: first 2 runs were much faster and consistent with times and flops but failed on the third... going to try a few more setting see what happens..... ok so this is i set the voltage in the bios to 1.49 just to see if upping the vcore helped.. upon doing so loading up hwinfo64 and running ibt avx on very high.. my voltage didnt move above 1.46.... wth is going on here? before i upped the vcore from 1.48 to 1.49 it was idling around 1.46 and hitting 1.488 under load.... this is odd...apparently dropping llc doesnt help with over shoot it keeps wanting to default me to 1.46 in windows....this last time it didnt budge above that 1.46 even under load

EDIT2: With llc on very high and vcore at the same bumped 1.49 it overshoots to 1.50 and only passes one more run of very high ibt with slower and less consistent scores

also temps are a lot higher for .012 jump in vcore? looking at 9C difference anyway any thoughts?

I also noticed this in the bios the vcore fluctuates from 1.76 to 1.88 every few seconds is that normal? bios fluctuation (Click to show)
This one is the vcore defaulting to 1.46 in the bios and windows


these two are the fluctuations taken just seconds apart

Edited by mfknjadagr8 - 1/6/15 at 7:34pm
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