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    Should I leave the list combined for both the CHVF and CHVF-Z
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    Seperate the lists
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post #4541 of 9900
Quote:
Originally Posted by UncleBlitz View Post

lol...and i you "enter" the prime95 stressing u have to revisit ur OC @ same cpu voltage... 4.9 stable is nearly impossible even with a middle range custom loop
so i m restarting the whole oc from stock but with prime95 aka stress reference tool
for now i m @ 4.5ghz with 1.45v(bios) and LLC on ultra, it seems rock solid under occt, ibt and prime95 but....as i see what voltage i had to put in i ll be very happy to hit a stable 4.8ghz with max cpu core temperature under 60°c
for the test i ve backed my ram @ 1333 and all the cpu nb stuff on auto
other point i had 2 bsods while playing crysis with the ram @ 1600....backed @ 1333 it runs fine...i bet i ll have to put more juice in ram voltages to get them stable @ 1600....but for now i try to focus on cpu frequency limit
it seem that p95 requires a lot more cpu voltage than occt and ibt, and tbh 20 runs of ibt doesnt mean 100% stable wink.gif

You may have lost me. Are you saying you are not stable at 4.9GHz as the data chart indicates? I can run 4.5GHz here all day long no problem, but that is uninteresting to me now.

I'm trying to crack the 5GHz barrier for stability and I'm thinking that should be easily achievable with the hardware I have. And yet it eludes me.
post #4542 of 9900
Quote:
Originally Posted by gr8sho View Post

You may have lost me. Are you saying you are not stable at 4.9GHz as the data chart indicates? I can run 4.5GHz here all day long no problem, but that is uninteresting to me now.
I'm trying to crack the 5GHz barrier for stability and I'm thinking that should be easily achievable with the hardware I have. And yet it eludes me.

yes mate it s exactly what i m trying to say: i had same objectives as you have: to break the 5.0ghz barrier stable
the recommended test for stability in the FX-8xxx data thread is 20 ibt runs which i can handdle with no problems as indicated in the mentionned thread....but....like i just wrote it i m no more sure that 20 ibt runs means 100% stable
there s a big discussion around prime95 as it require lot more juice than other stress programs to run without errors (verified here too...sadly): is prime faulty ;not addapted to FX and shouldnt be taken in account for the cpu stability......second idee is that the FX cant clock as high as expected and prime is just enough accurate to proove it
i personnally prefer to reduce my oc, just to be 100% sure of the stability

u told u can run 4.5ghz all day long? lol nice , i can run 5.3ghz for a month....though if i can run bench programs each cpu stress kills the dream in some seconds...can u run occt and prime for one or two hours @ 4.5ghz, if yes i ll be very interrested to compare what voltages u had to put in ?

of course 4.5ghz isnt interressant and that s absolutly not what i was aiming for with a custom loop, i just show where i am now when i foolow my instinct and not the FX-8xxx stressing recommendations,i can tell that my cpu is stable for this specific thread stressing /stability recommendations but imo this is what have no interrest
to me stable just mean that the pc can handle all programs , prime include( except if someone can prove me that prime95 is bugged)

anyway i hope u ll reach ur 5.00ghz target wink.gif
Edited by UncleBlitz - 12/2/12 at 3:52pm
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post #4543 of 9900
You raise some good points in here.
Quote:
Originally Posted by UncleBlitz View Post

yes mate it s exactly what i m trying to say: i had same objectives as you have: to break the 5.0ghz barrier stable
the recommended test for stability in the FX-8xxx data thread is 20 ibt runs which i can handdle with no problems as indicated in the mentionned thread....but....like i just wrote it i m no more sure that 20 ibt runs means 100% stable
there s a big discussion around prime95 as it require lot more juice than other stress programs to run without errors (verified here too...sadly): is prime faulty ;not addapted to FX and shouldnt be taken in account for the cpu stability......second idee is that the FX cant clock as high as expected and prime is just enough accurate to proove it

I'm going with the latter. If the program isn't optimized for FX then the app will just run slower. It should not affect computational accuracy. This is one reason I want to get it working. As things stood when I started asking about this topic, I couldn't get OCCT to run either, so there is definitely something amiss right now. And certainly if the system freezes that's surely a problem with the setup or the hardware itself.
Quote:
i personnally prefer to reduce my oc, just to be 100% sure of the stability
u told u can run 4.5ghz all day long? lol nice , i can run 5.3ghz for a month....though if i can run bench programs each cpu stress kills the dream in some seconds...can u run occt and prime for one or two hours @ 4.5ghz, if yes i ll be very interrested to compare what voltages u had to put in ?

Yes, when I said I could run @4.5GHz all day long, I meant it was Prime95 stable. If you go back a few pages you will see a screenshot of it. Vcore for this run was 1.38V. Really nothing out of the ordinary.
Quote:
of course 4.5ghz isnt interressant and that s absolutly not what i was aiming for with a custom loop, i just show where i am now when i foolow my instinct and not the FX-8xxx stressing recommendations,i can tell that my cpu is stable for this specific thread stressing /stability recommendations but imo this is what have no interrest
to me stable just mean that the pc can handle all programs , prime include( except if someone can prove me that prime95 is bugged)
anyway i hope u ll reach ur 5.00ghz target wink.gif

Right, well the trick here is to figure out what part of the system becomes unstable up at 4.9-5.0.

I'm trying to catch up on several weeks of the Vishera forum and it's a lot of useless discussion interspersed with some good points so I have to read through it carefully to see if I missed anything.
post #4544 of 9900
Quote:
Originally Posted by gr8sho View Post

...
Yes, when I said I could run @4.5GHz all day long, I meant it was Prime95 stable. If you go back a few pages you will see a screenshot of it. Vcore for this run was 1.38V. Really nothing out of the ordinary.
...

thx for the explanation mate, indeed... i had to go a few pages back biggrin.gif...i must tell i never have read so many pages than since i have this cpu....phenom II was so easy to overclock, i bet we have to re-learn all from scratch with this one rolleyes.gif
Quote:
Originally Posted by gr8sho View Post

....
I'm trying to catch up on several weeks of the Vishera forum and it's a lot of useless discussion interspersed with some good points so I have to read through it carefully to see if I missed anything.

lol...yeah hard pain to skip the Prime or not mini "war"....no way to dodge it though if u want to grab usefull infos...our daily crusade wink.gif
Edited by UncleBlitz - 12/2/12 at 4:57pm
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post #4545 of 9900
Quote:
Originally Posted by UncleBlitz View Post

thx for the explanation mate, indeed... i had to go a few pages back biggrin.gif...i must tell i never have read so many pages than since i have this cpu....phenom II was so easy to overclock, i bet we have to re-learn all from scratch with this one rolleyes.gif

Everything is relative here. I'm sure someone said the same thing when the Phenom II was first being overclocked, and when the next big thing in CPUs comes out in a few years, we'll say we missed the good ole days of overclocking the FX processors and how it was child's play. biggrin.gif The fun is the discovery process, as frustrating as it can be. Defining and determining the formula (pardon the pun) of how to overclock the Vishera. Perhaps some have mastered this already from what I am starting to read in the other thread. My hope is I can learn and replicate the formula on my system.
post #4546 of 9900
BTW, I changed a few things like disabled spread spectrum and turbo, and ran WEI which yielded me a 7.8 @ 4.976GHz. Also ran a Cinebench.


post #4547 of 9900
Ah the unknown! it was nice to have a phenom overclocking guide when i started. So I can't really play ball with you guys still have an 8150 on the CHVF but here is my wall I hit and my 2 cents

At 4.45 prime stable 24 hours with all the settings shown below in pictures, at 4.55 prime will fail on one core w fatal error or rounding error within the first few sets 30 minutes or so... I am still unsure about two things: is prime valid and core vs socket temp on the FX

Possible issues i am is chasing temp instability on air, cpu/nb voltage up vs cpu vcore down or both increased, VDDA, multiplier vs bus, and not wanting to update to latest bios sick of of that for now

screenshoots plus some extra data on power draw for the hell of it

CINEBENCH 11.5
open GL: 360 w
CPU: 390 w
Single thread: 220 w
Warning: Spoiler! (Click to show)

PRIME + KOMBUSTER GPU burn in 1680/1050
love to run this for full load on system, not practical but fun non the less
pulls 780 -790 w at the wall with a 90% PSU...goes higher when at 1920/1080 on the 42"
Warning: Spoiler! (Click to show)

VOLTAGES IN BIOS
missing is
NB HT voltage: 1.25
SB: 1.113
NB 1.8: 1.8
Warning: Spoiler! (Click to show)

Edited by ryan w - 12/5/12 at 7:28pm
 
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post #4548 of 9900
Quote:
Originally Posted by ryan w View Post

I am still unsure about two things: is prime valid and core vs socket temp on the FX

There's a raging debate over in the Vishera thread about Prime95. If you go to the actual website for P95, you'll see the change log that's been posted. The program is still actively being updated, but only in terms of Intel's latest Ivy architecture and so it's unclear if the FX Vishera has been tended to, specifically to the latest AVX instruction set. I'm using it to test my 8350 but typically only run for about 30-60 minutes. I also have the latest OCCT and IBT downloaded and will be looking at those as well. Going back to the Vishera argument, the people there seem to have settled on 20 passes of IBT as an indication of stability.
post #4549 of 9900
Quote:
Originally Posted by ihatelolcats View Post

im using ultra as well. extreme didnt freeze me but it did raise the voltage way too high. set at 1.475v high wasnt preventing dips. ultra does raise it to 1.488, i may lower the voltage a tick since it seems pretty steady
just using cpu-z to read it

So the big a-ha moment came late last night.

When I change values in BIOS, I really feel much better about things when I know what these switches actually do. Sometimes these switches only manifest themselves indirectly. I believe this to be the case with "spread spectrum" and possibly "APM". But suspect the former was the more important switch. I do recall turning these off also when I overclocked my 965 on the M2N32 SLI board. You do things because the cookbook tells you to sometimes but not necessarily knowing the full ramifications of what happens if you don't take care of the setting. Case in point, my 4.5GHz run was rock solid with spread spectrum and APM enabled, but go a little faster and the system effectively falls on its face. It's also possible this spread spectrum issue is exacerbated when all 4 memory DIMMs are installed.

Nevertheless, I will be able to get on with the act of profiling this system with my new H100i closed loop heatsink.

Thanks to all for your support.
post #4550 of 9900


are these dips normal?
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