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[Official] Gigabyte GA-990FXA-Series Owners Thread/Club - Page 55

post #541 of 12377
So.. The Gigabyte GTS replied with the following statement: The GIGABYTE 990 series motherboards strictly follow the AMD AM3+ load line calibration design guide, so CPU V-core voltage will drop according to loading. Such calibrations are built into the platform to protect the hardware and prevent damage to the PC system.
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post #542 of 12377
Interesting. When did you send in yours? I still haven't got a reply from the 13th. Also, OP hasn't been on in a couple days.
post #543 of 12377
Quote:
Originally Posted by Willhemmens View Post
Interesting. When did you send in yours? I still haven't got a reply from the 13th. Also, OP hasn't been on in a couple days.
I sent it yesterday morning. Well, my morning. 6am Finland-time.
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post #544 of 12377
Quote:
Originally Posted by kzone75 View Post
So.. The Gigabyte GTS replied with the following statement: The GIGABYTE 990 series motherboards strictly follow the AMD AM3+ load line calibration design guide, so CPU V-core voltage will drop according to loading. Such calibrations are built into the platform to protect the hardware and prevent damage to the PC system.
Did they say what there take on v-boost was?

Also it seem odd that people using the same mobo's and CPU combination are getting such different results.I'm not sure i believe Gigabyte on this,however maybe it will be fine with a Bulldozer,i'm defo gonna sut back and watch.Still miffed as to why no review site knew that it was implemented,and why Gigabyte have said they are trying to fix it,something does'nt sit right.

By the way is your UD3 affected by the problems at all?If so how bad?
post #545 of 12377
Quote:
Originally Posted by crossy82 View Post
Did they say what there take on v-boost was?

Also it seem odd that people using the same mobo's and CPU combination are getting such different results.I'm not sure i believe Gigabyte on this,however maybe it will be fine with a Bulldozer,i'm defo gonna sut back and watch.Still miffed as to why no review site knew that it was implemented,and why Gigabyte have said they are trying to fix it,something does'nt sit right.

By the way is your UD3 affected by the problems at all?If so how bad?
Well, that's all they told me in the reply. Maybe it's just an answer they give everyone.
I am running at 4.2GHz right now. Set the vcore to 1.440 in the BIOS. And it droops to 1.424. So it's not as bad as some of the other guys on here.
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post #546 of 12377
After careful consideration I've decided to give MSI 990FXA-GD65 a try. No vdroop on this board. OCCT shows 1.425v aswell as Crysis 2 everything maxed out
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post #547 of 12377
Quote:
Originally Posted by crossy82 View Post
Did they say what there take on v-boost was?

Also it seem odd that people using the same mobo's and CPU combination are getting such different results.I'm not sure i believe Gigabyte on this,however maybe it will be fine with a Bulldozer,i'm defo gonna sut back and watch.Still miffed as to why no review site knew that it was implemented,and why Gigabyte have said they are trying to fix it,something does'nt sit right.

By the way is your UD3 affected by the problems at all?If so how bad?
ok man, i have a question, when did they say they are trying to fix it?

THey never told me that, and that is why i changed my previous post so much, b/c it just isn't something I know for sure.


I am sorry i don't work for GB, i but i told you why its implemented. I saw a post once, a picture of integrated vdroop for AM3+ GB boards, but I cannot find it anymore. Then i asked my GB contact and i was given that official response.

Also that guy is right, there is only 1 or 2 reasons to impliment vdroop, the first being to reduce transient overshoot during current steps. On Intel CPUs had 100Amp current steps from idle to load, and voltage had to change as well, but the transient overshoot could be a huge problem so they implemented a droop that would keep that max overshoot within safe limits.

The next reason is that when current is increased voltage needs to be decreased if they want their product to stay within TDP, right now their TDP is very high for bulldozer, and I think that without vdroop they will get too hot.


Review sites don't pick up on stuff b/c they do not test deep enough, they see the voltage is lower and call it a day at that, most reviewers really don't know much about voltage/circuitry/motherboards to even review a motherboard. It saddens me and that is why i review.

You know what ill do you guys even a bigger favor, I will show you guys oscilloscope shots before and after the mod, to see if ripple changes, and if noise changes, and if my OC changes.
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post #548 of 12377
Quote:
Originally Posted by Lostintyme View Post
Please PM me your email for the F5B BIOS. It improves vDroop greatly.
Hey Lostintyme --

I'm trying to PM ya' . . . but I can't send PM's yet (for some reason). If you could send them, KarmaKiller can tell you how to get them to me.

Thanks,

Harder

<edit> YGPM, Thanks again! <edit>
Edited by sharder8 - 7/15/11 at 4:27pm
post #549 of 12377
Quote:
Originally Posted by Sin0822 View Post
You know what ill do you guys even a bigger favor, I will show you guys oscilloscope shots before and after the mod, to see if ripple changes, and if noise changes, and if my OC changes.
This, would be most excellent, proper reviews, in depth analyses, along with hopefully hard core tuned oc reviews is what i have been wishing for, for ever.... they do it on psu's, why not mobos.

hope to see some of your reviews soon!
 
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post #550 of 12377
Quote:
Originally Posted by Sin0822 View Post
ok man, i have a question, when did they say they are trying to fix it?

THey never told me that, and that is why i changed my previous post so much, b/c it just isn't something I know for sure.


I am sorry i don't work for GB, i but i told you why its implemented. I saw a post once, a picture of integrated vdroop for AM3+ GB boards, but I cannot find it anymore. Then i asked my GB contact and i was given that official response.

Also that guy is right, there is only 1 or 2 reasons to impliment vdroop, the first being to reduce transient overshoot during current steps. On Intel CPUs had 100Amp current steps from idle to load, and voltage had to change as well, but the transient overshoot could be a huge problem so they implemented a droop that would keep that max overshoot within safe limits.

The next reason is that when current is increased voltage needs to be decreased if they want their product to stay within TDP, right now their TDP is very high for bulldozer, and I think that without vdroop they will get too hot.


Review sites don't pick up on stuff b/c they do not test deep enough, they see the voltage is lower and call it a day at that, most reviewers really don't know much about voltage/circuitry/motherboards to even review a motherboard. It saddens me and that is why i review.

You know what ill do you guys even a bigger favor, I will show you guys oscilloscope shots before and after the mod, to see if ripple changes, and if noise changes, and if my OC changes.
It seemed going by the various forums that they were implying it was a bios issue.However after some serious research last night,it now appears that it is a feature of Bulldozer.

I also found out that for some reason Gigabyte deliberatly did'nt enable LLC for Phenom processors for some reason.However LLC will be enabled for Bulldozer,going by this that would make Bulldozer problem free on these boards.This could certainly be good news to all owners of these boards,I myself will wait til i see a Bulldozer in one of these before deciding.I guess Gigabyte did'nt put too much effort into AM3 compatability,makes sense though now they will be phased out,no point spending valuable time fine tuning for a end of line CPU.

I wish Gigabyte had mentioned this on there site or actually taken the time to post this in a forum.They may have lost some customers to this by now,maybe they will gain some when the right tech is on this board,and the LLC enabled.
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