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Disappointed with GB GTX 670 overclock - Page 4

post #31 of 66
Quote:
Originally Posted by plum View Post

Smells like cherry picked GPUs, I guess they'll release a 1300mhz SoC edition later
Edit: 670 is very tempting, wonder what kind of performance improvement I would see coming from a 460. There aren't really any demanding games though besides BF3, Witcher and Metro... all of which I'm already playing with pretty good eye candy, just not ultra

1x 670 outperformed my 460 hawks in sli @920core in all benchmarks, and have a better gaming experience aswell. So I'd say you notice double the performance. smile.gif
 
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post #32 of 66
What kind of gaming temps are you getting? I've grown pretty fond of the TF design, so I might wait and see what MSI has to offer unless Windforce is as decent
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post #33 of 66
Quote:
Originally Posted by plum View Post

What kind of gaming temps are you getting? I've grown pretty fond of the TF design, so I might wait and see what MSI has to offer unless Windforce is as decent

In sli my top card gets to 68c, but when I had a single card it was around 55-60c. And the fans barely ramp up at all, so stay fairly quiet.
 
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post #34 of 66
Thread Starter 
Quote:
Originally Posted by plum View Post

What kind of gaming temps are you getting? I've grown pretty fond of the TF design, so I might wait and see what MSI has to offer unless Windforce is as decent

 

Reasonable temps. Just ran 3dMark11 and temps were around 63C when the fan is at 36%. The card is almost silent until you crank it past 50%. At 100% the fan gets fairly loud. 

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post #35 of 66
Quote:
Originally Posted by LexDiamonds View Post

I'm from the age where raising voltages on a vid card required soldering skills and a VR. The whole software vmod revolution has people spoiled. This being said, I believe there is still a driver/BIOS lock on Kepler voltages at the moment but this should be sorted out in the coming months. thumb.gif

I tend to agree. No offense Youra but the # of phases and pin connectors don't have anything to do with the 'overvolting' capability of a card. There's only three things that matter directly in a software-controlled situation like this one:

1) You have a voltage controller that has the ability to 'take commands' from the voltage control software you're using (like AB or the like) and
2) The software knows how to successfully 'talk to' that voltage controller and tell it what to set the voltage at, and
3) The bios or driver doesn't somehow inhibit that 'conversation' from happening.

Beyond that, the de-facto limit to the maximum voltage that can be achieved could be dictated by any of three components involved (controller, software, bios/driver).

Since it's IMHO unlikely there's a software limit (be that driver software or overvolting software) in place here, the only things that could be limiting voltage on Kepler cards are limits either set by the bios of the card, or the controller itself is simply not capable of delivering a voltage that's any higher than what we're seeing the cards hitting. I don't think we really have enough info at this point to know for sure which one of those two is applicable, but it *may* be a bios lock on the voltage, that's for sure.

What the additional power phases do is clean up the delivered power more thoroughly (reducing ripple and scale of voltage fluctuations) so they may improve stability at higher clocks but really don't allow for more voltage per se. And all the extra pins do is keep your PCI-Ex power cables from getting as warm.
Edited by brettjv - 5/12/12 at 11:53pm
    
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post #36 of 66
Thread Starter 
Quote:
Originally Posted by brettjv View Post


I tend to agree. No offense Youra but the # of phases and pin connectors don't have anything to do with the 'overvolting' capability of a card. There's only three things that matter directly in a software-controlled situation like this one:
1) You have a voltage controller that has the ability to 'take commands' from the voltage control software you're using (like AB or the like) and
2) The software knows how to successfully 'talk to' that voltage controller and tell it what to set the voltage at, and
3) The bios or driver doesn't somehow inhibit that 'conversation' from happening.
Beyond that, the de-facto limit to the maximum voltage that can be achieved could be dictated by any of three components involved (controller, software, bios/driver).
Since it's IMHO unlikely there's a software limit (be that driver software or overvolting software) in place here, the only things that could be limiting voltage on Kepler cards are limits either set by the bios of the card, or the controller itself is simply not capable of delivering a voltage that's any higher than what we're seeing the cards hitting. I don't think we really have enough info at this point to know for sure which one of those two is applicable, but it *may* be a bios lock on the voltage, that's for sure.
What the additional power phases do is clean up the delivered power more thoroughly (reducing ripple and scale of voltage fluctuations) so they may improve stability at higher clocks but really don't allow for more voltage per se. And all the extra pins do is keep your PCI-Ex power cables from getting as warm.

 

This I understand, you can have 2000 PWN phases in the card and it still wouldn't make a difference. I was trying to make a point that no current GTX 680 could be overvolted with the exception of one. And that one card is the Classy 680. It is clearly a non-reference board. 

 

Remember the GTX 570? I recalled that the 570 lacked 2 less  power phases than the 580,. As a result,  this caused many 570s to fail when overvolted. I do concede, however, that sometimes the blame is incorrectly pointed to the VRMs, especially when there are many other components to consider.

 

The 570s I recall may have had a design flaw, where the load to the VRM was unequally divided. The 590s had cheaply made MOSFETs.  Whatever the case, EVGA would not be adding all these power phases without reason. Perhaps its a marketing gimmick... I don't fully know.

 

Anyways even though power phases do not have a direct connection to over volting (I never intended to make that connection),  more phases will prevent the VRMs from overloading. But you're right, the differences in actual numbers may be nil.

 

Which brings me to another point. If it is indeed the BIOS that is preventing the card to be overclocked, why is EVGA the only vendor who has "figured" it out? I would think by now, the geniuses in Asus development team would have come up with an answer?

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post #37 of 66
Quote:
Originally Posted by brettjv View Post

Beyond that, the de-facto limit to the maximum voltage that can be achieved could be dictated by any of three components involved (controller, software, bios/driver).
Since it's IMHO unlikely there's a software limit (be that driver software or overvolting software) in place here, the only things that could be limiting voltage on Kepler cards are limits either set by the bios of the card, or the controller itself is simply not capable of delivering a voltage that's any higher than what we're seeing the cards hitting. I don't think we really have enough info at this point to know for sure which one of those two is applicable, but it *may* be a bios lock on the voltage, that's for sure..

Unfortunately it looks like it is not in the bios, from what I've read in another thread,, when customising the bios almost everything else is changable except the voltage, which leaves me to think that its a hardware limitation.
 
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post #38 of 66
Hey guys, I'll be getting my Gigabyte cards sometime next week...ordered two for SLI

What should I do to "test" and see if I got the low or high Overclock version? Do I just run Heaven for awhile with Precision X in the background....then check to see how far it boosted up?

Thanks in advanced
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post #39 of 66
Quote:
Originally Posted by steven88 View Post

Hey guys, I'll be getting my Gigabyte cards sometime next week...ordered two for SLI
What should I do to "test" and see if I got the low or high Overclock version? Do I just run Heaven for awhile with Precision X in the background....then check to see how far it boosted up?
Thanks in advanced

Basically that, yes. To see your true OC, it must be 'observed' under load. However it'd be most meaningful if multiple tests were run + perhaps a few hours of gaming on a few different games.

This is because sometimes a card is stable in one bench/game but not another. Heaven seems to be pretty reliable in sussing out an unstable OC, however a few loops of Vantage or 3dMark11 + playing some original Crysis are other good tests thumb.gif
Edited by brettjv - 5/13/12 at 8:11am
    
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post #40 of 66
Quote:
Originally Posted by youra6 View Post

This I understand, you can have 2000 PWN phases in the card and it still wouldn't make a difference. I was trying to make a point that no current GTX 680 could be overvolted with the exception of one. And that one card is the Classy 680. It is clearly a non-reference board. 

Remember the GTX 570? I recalled that the 570 lacked 2 less  power phases than the 580,. As a result,  this caused many 570s to fail when overvolted. I do concede, however, that sometimes the blame is incorrectly pointed to the VRMs, especially when there are many other components to consider.

The 570s I recall may have had a design flaw, where the load to the VRM was unequally divided. The 590s had cheaply made MOSFETs.  Whatever the case, EVGA would not be adding all these power phases without reason. Perhaps its a marketing gimmick... I don't fully know.

Anyways even though power phases do not have a direct connection to over volting (I never intended to make that connection),  more phases will prevent the VRMs from overloading. But you're right, the differences in actual numbers may be nil.

Which brings me to another point. If it is indeed the BIOS that is preventing the card to be overclocked, why is EVGA the only vendor who has "figured" it out? I would think by now, the geniuses in Asus development team would have come up with an answer?

I hear ya. But the 570 ... you could still set a really high voltage, and it would try to do it. It might fail and crap out and go up in smoke, but as a user you had the option. So it was not quite the same scenario wink.gif
Quote:
Originally Posted by marduke83 View Post

Unfortunately it looks like it is not in the bios, from what I've read in another thread,, when customizing the bios almost everything else is changeable except the voltage, which leaves me to think that its a hardware limitation.

I hope the info Marduke shared is somehow wrong, but I fear it may be right. There may be a hard-cap at 1.175V at the VRM level itself. Like I said above, it's either gonna be the BIOS limit, or the VRM simply doesn't have any higher VID's available on it.

However this info leads me to wonder ... do they (people in the 'other thread') mean that they set a higher voltage in the BIOS and it simply doesn't 'work' (which would make me think it's a VRM limit) or ... have they just not yet figured out *how* to properly change the bios to get the actual voltage to go up? Sometimes those kinds of things take time.

Seems like a VRM limit could be determined somehow by just the make/model number on the VRM ... don't those things usually have published specs like "Programmable Voltage Range: .175V - 1.175V" or whatnot?
Edited by brettjv - 5/13/12 at 8:06am
    
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CPUMotherboardGraphicsRAM
xeon X5675 6-core @ 4.1ghz (1.29v, 20x205 +ht ) rampage iii extreme msi rx470 gaming X (the $159 budget king) 3 x 2gb corsair xms3 pc12800 (9-9-9-24-1T@1600MHz) 
Hard DriveOptical DriveCoolingOS
hynix 250gb ssd (boot), 2tb deskstar (apps),1tb... plextor px-712sa - still the best optical drive... corsair h8o v2 aio W10 home 
MonitorPowerCaseAudio
asus vw266h 25.5" (1920x1200) abs sl (enermax revolution) * single 70A rail 850w silverstone rv-03 XFi Titanium 
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