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[OFFICIAL] FX-8320/FX-8350 Vishera Owners Club - Page 627

post #6261 of 67013
Anything else is left on stock. Not auto, stock value.
I thought it'll be easy: raise cpu voltage, raise cpu multiplier to 23-24, and thats it..
I don't understand what's happening.
post #6262 of 67013
Hi, tx for answer. The cooler is a freshly arrived Prolimatech Panther. http://extrahardware.cnews.cz/sites/default/files/pictures/archive/clanky/archive/2011/12prosinec/prolimatech-lynx-panther/photos/450px/02.jpg

So you're telling me that i give the CPU so much voltage that it just refuses to work?
The stock Vcore is 1.4 under load..
Interesting idea, thank you. Will give it a try.
4.4-1.35-ultra h
post #6263 of 67013
Thread Starter 
Quote:
Originally Posted by os2wiz View Post

Quote:
Originally Posted by KyadCK View Post

Having just watched it, it's an incredibly good movie. It's basically a musical I'm willing to watch. biggrin.gif
Anyway, CPU doesn't like 5.2Ghz with just a VCore bump, not with the wussy 1650rpm fans they included. IBT still makes it get too hot (understand we're talking 1.6-1.625v here, as that's what it took to bench at 5.2 before) and it crashes (although not until the 3rd pass begins, when it's had time to warm up), but I bet it'd be acceptable for some PlanetSide2 or DVD ripping.
I also need to decide what to do with my H100... I don't have another case that it would fit "nicely" in. Anvil (HAF XM) is fine with it's H80, and I really don't want to screw up it's fan config. I could put it in CloudNine (HAF 912) I guess, in front of the HDD bay with the front fans, if the hose will reach. Or I could sell it, but I have no idea where the Intel stuff for it is, and the Liquid Ultra doesn't seem to want to come off completely. Decisions decisions... thinking.gif

I have an H100 also. I am wondering if it would keep temps lower if I replaced the 2' stock 120mm fans with 2 120mm Noctuas NF-S12B ? If it won' lower temps but will be as good with less noise that would be a viable option for me as well. I have 2 of them new in the box sitting under my computer desk. Just want to make sure the effort of install is not a wasted venture , as frail as my health is these days, I can't afford spinning my wheels.

You would find yourself very hard pressed to find fans the preform as well as Corsair's:
Quote:
Fan dimensions: 120mm x 120mm x 25mm
Fan speed: 1300 - 2600RPM
Fan airflow: 46 - 92 CFM
Fan dBA: 22 - 39 dBA
Fan static pressure: 1.6 - 7.7mm/H20
SOURCE: http://www.corsair.com/hydro-series-h100-extreme-performance-liquid-cpu-cooler.html

And considering the feel of them compared to the current 1650 fans I use, the 1650 Corsair fans in Anvil, and the R4's that serve as my case fans, I very much believe those specs. They're noisy, but they're in a class of their own.
Quote:
Originally Posted by os2wiz View Post

Quote:
Originally Posted by KyadCK View Post

With PD? Nope. Not enough samples.
With others? Wouldn't be a very good way to compare chips if they did.

sure enough. I was hoping there may be some engineering info on this question that is in the public domain. It might be useful to us here. I would be great if someone here who may have contacts with AMD may be able to have them do a podcast
Or interactive forum for a set day and time that would allow us to ask those arcane but interesting questions we are not sure about to someone with a much wider database of knowledge. Do you think that may be feasible for the Vishera Owners-Users Club?

While I can't answer for the actual process used and why there may be variations between or in a given batch, I think the idea has to do with the fact they don't make each CPU on an individual basis. They make one massive sheet of Silicon Wafers, then chop it up into the dies we call CPUs. Each sheet is baked, and all dies cut out of the same sheet were made using exactly the same settings. Sheets made within the same timeframe of one another get the same Batch number. GPUs are made the same way, as well as most other chips. It's also the reason why it's so much cheaper and smarter for AMD to make one design (8350) and just laser off cores for the other chips (6300, 4300) then to submit a whole other design. Or in the case of the wonderful Ph II x2's and x3's, just disable them.

I could be wrong, but how I understand batch numbers is:

1234 =
Year '12
Week 34

There could very well be large differences between a chip made on monday and one on friday of that week, but the variance is much less likely to be as extreme as a CPU made in week 34 vs one made 10 weeks later in batch 1244.

This is mostly patchwork from other people though, I have no hard evidence of any of this aside from baking chips in sheets, there's actual pictures available on the web for that.
Edited by KyadCK - 12/28/12 at 2:01pm
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post #6264 of 67013
Tried 4.4GHz-1.35V-Ultra High LLC, OCCT error on Core2 after couple of minutes. Now going on same settings but 1.41-1.42V (stock value)..
The core temperature's under load are 50-53C.
post #6265 of 67013
can anyone post their CHV-Z bios settings for 5.0ghz on the 8350, not sure why i cant get it ITB or prime stable, thanks
Edited by sgtgates - 12/28/12 at 3:21pm
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post #6266 of 67013
Probably going to take at least 1.53 volts to run IBT @ 5 ghz stable. Prime, it's hard to say because people have had problems with it and the Vishera.
I'm not sure you have enough cooling to run IBT at 5ghz , keep an eye on temps.
How do you like your Stryker? Looks nice btw smile.gif
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post #6267 of 67013
Quote:
Originally Posted by cssorkinman View Post

Probably going to take at least 1.53 volts to run IBT @ 5 ghz stable. Prime, it's hard to say because people have had problems with it and the Vishera.
I'm not sure you have enough cooling to run IBT at 5ghz , keep an eye on temps.
How do you like your Stryker? Looks nice btw smile.gif

My (Storm Trooper) is fun I like it, and I have full custom loop temps only hit 61 on 1.55 volts under load with raystorm block. My issue is no matter what voltge even close to 1.55 it wont successfully run, something else must be incorrect voltage wise

edit:I updated my sig rig, post pictures soon. I have the thermal capabilities and the board hold voltages great idk what my prob is frown.gif
Edited by sgtgates - 12/28/12 at 3:50pm
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post #6268 of 67013
KyadCK:
Quote:
There could very well be large differences between a chip made on monday and one on friday of that week, but the variance is much less likely to be as extreme as a CPU made in week 34 vs one made 10 weeks later in batch 1244.

This is mostly patchwork from other people though, I have no hard evidence of any of this aside from baking chips in sheets, there's actual pictures available on the web for that.
Edited by KyadCK - Today at 4:01 pm
From Toms Hardware:


Here is a short but well done tutorial of the CPU manufacturing processes from Tom's Hardware.

http://www.tomshardware.com/reviews/semiconductor-production-101,1590.html

One of the biggest factors in the overclockability of a CPU is Transistor gate length. (the distance between the source and the drain) and inconsistencies in shape and or length.
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post #6269 of 67013
So im working on 5Ghz stable now.. and im a bit curious on voltages.. now.. what do you think the max "safe voltage" is if you are not limited by heat for lets say an extended 8+ hour use at 100% without leading to degradation
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post #6270 of 67013
Quote:
Originally Posted by F3ERS 2 ASH3S View Post

So im working on 5Ghz stable now.. and im a bit curious on voltages.. now.. what do you think the max "safe voltage" is if you are not limited by heat for lets say an extended 8+ hour use at 100% without leading to degradation


Bump, I was wondering the same thing
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