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[OFFICIAL] FX-8320/FX-8350 Vishera Owners Club - Page 825

post #8241 of 67351
Quote:
Originally Posted by Capta1nKirk View Post

That's what Prime requires.

It will do everything else at 0.05 less, but not Prime.


EDIT: Stock (non-turbo) VID is 1.35v

Hmmm, you might have a Golden FX 8350. I'd bet with a CHV-Z and Water you'd be running over 5Ghz at a reasonable voltage.
post #8242 of 67351
So something very interesting just occurred.

I'm at about 11h30m on Prime right now, and about 15 minutes ago I had to close the door to my office for a bit.

Ambient temps started to increase, and TMPIN2, what everyone has always said is the northbridge, hit 70C.

At that exact moment, the board beeped, and Vcore was decreased to 1.376. I assume this is the MOS protection that was noted in a BIOS update a few revisions ago.

So that means either TMPIN2 is NOT the NB but is indeed the MOS/VRM temp as has been suggested before, or that MOS/VRM protection kicks in based on NB temp.

In any case, it is still priming with 18 minutes to go.
post #8243 of 67351
Quote:
Originally Posted by Capta1nKirk View Post

So something very interesting just occurred.

I'm at about 11h30m on Prime right now, and about 15 minutes ago I had to close the door to my office for a bit.

Ambient temps started to increase, and TMPIN2, what everyone has always said is the northbridge, hit 70C.

At that exact moment, the board beeped, and Vcore was decreased to 1.376. I assume this is the MOS protection that was noted in a BIOS update a few revisions ago.

So that means either TMPIN2 is NOT the NB but is indeed the MOS/VRM temp as has been suggested before, or that MOS/VRM protection kicks in based on NB temp.

In any case, it is still priming with 18 minutes to go.

Did you just buy your chip? Do you happen to have the patch number? It sounds like you have something good.



Did you disable thermal throttling in the PC Health section of the BIOS? I turned mine off and walked past 72c on TMPIN2 like nothing. I've gone past 70c like nothing a few times too.

90c is when these chips start to degrade. AMD is just very conservative with temps, probably because GloFo blows and they know it and they need a big safety net because there's probably a ton of variance in the quality of these chips.

Also, for anyone interested, I've been running this thing constantly above 1.55v with peaks of 1.62v with LLC under load, and I haven't seen any signs of degrading. Although if Capta1nKirk just bought a new chip and it's that good, I may want to get another. You know, for science.
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post #8244 of 67351
And that killed it frown.gif

6 minutes short of 12h, 1 core failed prime, and it's my own fault GAH!

I am positive that had I not let ambient temps increase to the point of VRM protection kicking in, it would have passed 12+ hours no problem.

Still, good information for anyone on a 990FXA-UD3 (rev 1.0 at least), it appears that 70C on TMPIN2 is the key to VRM protection kicking in and throttling Vcore.
post #8245 of 67351
Quote:
Originally Posted by ComputerRestore View Post

Yes it could.

Also, do you know if your Motherboard will support an FX 8350? It's not listed for it, and none of the BIOS updates even mention it.
Great. It would be good to see OCCT at 4.3Ghz at the same voltage as what you are running 4.2Ghz or even just a small voltage increase. If your temps are still ok, then hopefully it will show the actual issue at that frequency.

If nothing turns up on OCCT as to what the issue is I'd recommend following this guide

Core Failure Guide

Yeah, I know, I'm checking out what motherboard will I get.
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post #8246 of 67351
Quote:
Originally Posted by sdlvx View Post

Did you just buy your chip? Do you happen to have the patch number? It sounds like you have something good.



Quote:
Originally Posted by sdlvx View Post

***snipped image***

Did you disable thermal throttling in the PC Health section of the BIOS? I turned mine off and walked past 72c on TMPIN2 like nothing. I've gone past 70c like nothing a few times too.

90c is when these chips start to degrade. AMD is just very conservative with temps, probably because GloFo blows and they know it and they need a big safety net because there's probably a ton of variance in the quality of these chips.

Also, for anyone interested, I've been running this thing constantly above 1.55v with peaks of 1.62v with LLC under load, and I haven't seen any signs of degrading. Although if Capta1nKirk just bought a new chip and it's that good, I may want to get another. You know, for science.

That setting was indeed enabled in BIOS, I will test again with it disabled, just to see. I guess that's what I get for assuming it was tied to CPU temp as it's description says redface.gif

Not certain how I want to proceed now though, as I already have active VRM and NB cooling in place. I don't know that I would want to leave that setting disabled full time, especially considering that I only ever get close to 70C running Prime or IBT, and only when I am an idiot and close the door to my office biggrin.gif
post #8247 of 67351
Quote:
Originally Posted by Capta1nKirk View Post

Not certain how I want to proceed now though, as I already have active VRM and NB cooling in place. I don't know that I would want to leave that setting disabled full time, especially considering that I only ever get close to 70C running Prime or IBT, and only when I am an idiot and close the door to my office biggrin.gif

I'll help you with that

This one

This one

This one

You can fill in the rest. biggrin.gif
post #8248 of 67351
Quote:
Originally Posted by ComputerRestore View Post

I'll help you with that

This one

This one

This one

You can fill in the rest. biggrin.gif

HA !

Is that all ? biggrin.gif

I have been on the fence regarding the CVFZ vs UD7 for about a week now. I would probably go UD7 if I could guarantee a rev 1.1, as I do prefer it's layout and slot spacing.

And it's not red.

Not so sure about the H2O.
post #8249 of 67351
Quote:
Originally Posted by Capta1nKirk View Post


That setting was indeed enabled in BIOS, I will test again with it disabled, just to see. I guess that's what I get for assuming it was tied to CPU temp as it's description says redface.gif

Not certain how I want to proceed now though, as I already have active VRM and NB cooling in place. I don't know that I would want to leave that setting disabled full time, especially considering that I only ever get close to 70C running Prime or IBT, and only when I am an idiot and close the door to my office biggrin.gif

I believe the setting in PC Health is an extra Gigabyte layer of protection and that it just reads socket temp and throttles that at 70c. I am on linux now and I've dug this up before, but I also believe Linux can read registers for max temps and I've read 70c is a warning zone and 90c is critical.
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Tyrant Kuma
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Starscythe
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Super Micro h8qme-2+ Sapphire 4870 Samsung DDR2 ECC 667mhz western digital caviar blue 
CoolingCoolingOSPower
FX 8350 stock cooler FX 6300 stock cooler Gentoo Linux 2x Silverstone PSU 
Case
Custom Fabbed Steel Case 
CPUMotherboardGraphicsRAM
AMD FX 8350 gigabyte 990FXA-UD5 7970 Mushkin Enhanced Blackline 16GB 
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Gentoo Linux Windows 7 x64 Yamakasi Catleap Q270 Corsair K90 
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XSPC RS360 Raystorm with custom radiator mounts 
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post #8250 of 67351
90c is the temperature at which silicon starts degrading.
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