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[Official] Gigabyte GA-990FXA-Series Owners Thread/Club - Page 35

post #341 of 12377
sigh. my UD7 is still at least a day away but i can't stop myself from constantly updating the tracking page
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post #342 of 12377
Quote:
Originally Posted by crossy82 View Post
Obviously they will say that.Lol,theres no end of problems with these boards,the net is full of the same stories,and people who are in the know and have tested significantly say its the hardware.

TO ANYONE WANTING THE GIGABYTE,DONT DO IT,WAIT FOR A FIX TO BE SURE.

I not bashing them as a company,i own a Gigabyte and it has done me fine,but seriously,no point in investing your hard earned money into something potentially defective.
I asked them by e-mail, but if they're lying, they're only lying to themselves in a long run. Gigabyte has never lied to me when I asked them something. The things I've asked always came out to be true, so I don't know...
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post #343 of 12377
Quote:
Originally Posted by Lordred View Post
Vdroop can ruin an OC, setting the Vcore up higher to compensate causes them to work harder (hotter).

I call garbaldygook on the not tuned for Thubans, as the Octa FX's will have a 135watt TDP (thats 10 watts higher then the Thuban) at stock
not true at all, vdroop results in lower total wattage pulled, its healthier for your CPU.

Sow hat is so wrong with teh board i am not gettingit?

BTW some of you guys need education in voltage regulation, the MOSFETs have nothing to do with it, the PWM does and the tweaking for the PWM does. The PWm controls the output voltage no matter the condition of the MOSFETs.

You guys really need to see Intel, Vdroop is part of the spec, and almost 100mv in many cases(thats .1v) and that is becuase those CPus are really power hungry and need to be in good condition so the vdroop maintains this fact.

Here is why vdroop is there:
So wattage = power and power= current x voltage.
At idle you are pushing VERy little current rhough the CPU, so teh voltage can be higher, its really doesn't matter. But when you go under load, the current is increase in huge steps, in Intel platforms its 100A step. Do the math, voltage is dropped for an increase in current so that the CPu stays within TDP.

Ever think that is part of BD's spec? vdroop? its very common among high wattage CPUs. This board is tuned for BD not Thubans like i said before.

Now on Intel side we have somthing called LLC, load line calibration and its not very healthy for teh CPU and it does exactly what you guys are asking for, no vdroop.

BTw vdrop is part of every single voltage regulator on your board, its the difference from what you set to what you get. Vdroop is difference between idle and load.

If what i read is correct you guys are saying you set 1.5v and you get 1.54v idle and 1.47 load, then that is not natural, it should be more like 1.49v, if its raising that means GB has implemented some type of LLC for this platform, whether they care to tweak it or not for now, or whether they need to is not a question I can answer for you. What i can say that you should ONLY look at your load voltage, idle voltage means as much as idle temps, as in it doesn't mean scrap.

Remember font be scared of voltage be scared of current, becuase no matter how much you change voltage, current wont change.

FYI i do help GB better their products by doing a power user review. I haven't had time to touch this board becuase of llano launch but ill investigate it.

One thing to remember, b/c its not in the BIOS doesn;'t mean its not there.

Intel P67 boards released with 3 levels of LLC, now they have 10 through a BIOS update, and I have a BIOS with 33 possible LLC levels, of course consumer will never see 33 levels.
Edited by Sin0822 - 6/29/11 at 3:56pm
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post #344 of 12377
@ Sin0822 - if its part of the BD spec I'd have thought that 990fx boards by other manufacturers would have the same thing. I don't see any vdroop comments in the Sabertooth 990fx or Crosshair 990fx threads though.
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post #345 of 12377
what different manufacturers do its totally up to them, some follow spec some dont, just like some on the Intel side dont have VRD12 certification. They could have tuned it for thuban better than GB bothered too. The truth is we wont see how good these boards really are until BD is released.

Either way guys, GB has the capability, becuase with the A75-UD4H i have i set 1.525v and it gives me 1.520v idle and 1.520v load.
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post #346 of 12377
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post #347 of 12377
Well that would make sense to vdroop during load as long as the vdroop doesn't make the system unstable or damage the cpu for not getting its proper volts during an high OC. Lordred had a stable 4.0 OC even with the vdroop. Another thing i noticed is that there are reviews up on the net on the UD5 and UD7 and they dont mention the vdroop at all when OCing.
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post #348 of 12377
With my UD5 I have 1.275v set in the BIOS. Idle its giving 1.31v, and under load its giving 1.25v. Also I have set 1.65v for RAM and its only giving 1.62v. There is definitely something wrong. I have almost made up my mind to return it (I still have a couple of weeks to see if Gigabyte can fix this). If not - Sabertooth here I come!
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post #349 of 12377
Quote:
Originally Posted by iSeries View Post
With my UD5 I have 1.275v set in the BIOS. Idle its giving 1.31v, and under load its giving 1.25v. Also I have set 1.65v for RAM and its only giving 1.62v. There is definitely something wrong. I have almost made up my mind to return it (I still have a couple of weeks to see if Gigabyte can fix this). If not - Sabertooth here I come!
I just did a test on my X3, 1.45v. Getting 1.49V idle. This isn't any design, is it? This is just something wrong is what I'm thinking.

I'm thinking about keeping the board and maybe selling it when BD comes out depending on what's up if vDroop is intended or not.

Anyway, is it normal I can't get 3.5GHZ on a 2.8GHZ CPU at 1.5v on this board?
    
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post #350 of 12377
There's been a lot of noise about the Gigabyte 990fx vdroop issue recently and I'm sure many many users have got in contact with Gigabyte (I have - no reply yet!). I'm sure if this is how the boards were designed to behave Gigabyte would have come out and said so. Instead they are giving out beta bios's for us to test.
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