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Gigabyte GTX 670 OC Version *HANDS ON* - Page 106

post #1051 of 1506
Quote:
Originally Posted by brettjv View Post

Why does it matter to you so much if they aren't running at the same speed? Some very simple math will allow you to run them at the same clocks using Afterburner if you want to.
Not only that but all that's going to happen from the clocks being mismatched is that they'll either run at the average speed between the two of them, or they'll run like they would at the lower of the two clocks. It really shouldn't hurt anything at all.
It's also pretty obvious based on the wide range of Max OC's we're seeing that these chips vary by quite a bit. If they didn't have means to set the variable boost amount differently for different chip samples, then the boost clock on every one of these cards would have to have been set really low, i.e. based on least common denominator.

I think you've nailed exactly why Nvidia decided to use a boost clock for Kepler. There is too much variance between GPU's this generation so they had to customize each cards clock speed to suit its own personal chip. Certainly allowed them to get away with clockspeeds they would never have defaulted to if all the cards were set at a static reference clock....
post #1052 of 1506
Quote:
Originally Posted by lightsout View Post

Thanks man I actually just jumped to precision since I remembered the voltage thing. Looks like the card is boosting to 1150 at stock. Its crashed a few times at 1250 so I know it can do that clock. Which makes me sad. Haven't touched the memory. Temps are excellent.
The thing that is a pain about these cards is the boost. When I run heaven it starts at 1124, a couple minutes later it goes up to 1140, then 1150 a bit later. So its hard to nail down exactly what offset does what as it varies just the same.
Man heaven just crashed at 1230. Max temp was 56c. What a bummer card.
EDIT*** Regardless of the clock. (which I have been playing bf3 at 1235). This card is awesome. I had never tried adaptive v sync and it works great for me. I was getting tearing before I turned it on. Super smooth after.
Temps are so good. I had an antec 920 on my 680 not even going to bother with this card. Max temp was 55c and with Vsync on it was like 50c. SICK!

Odd that your Kepler Boost amount varies like that. With my card it's always 1189 at stock settings from the moment a 3d app starts and never changes.

AFA the max OC goes, honestly it takes like at least 15% extra FPS, or roughly 20% higher clocks, to actually make an FPS difference that's visible to the naked eye .. and nobody is getting 20% more than you ... not even close thumb.gif If you like the card otherwise, I wouldn't sweat it too much.

And GoldenTiger, I obviously haven't actually tried running the cards at different offsets myself, just knew it was theoretically possible using AB. I'd imagine that in future versions of AB they'll iron out the kinks. Is there any actual problem with having them run at separate clocks or does it just bug ya on principle?
Edited by brettjv - 5/21/12 at 11:02pm
    
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post #1053 of 1506
It's more of the principle if you ask me

I'm willing to bet this topic would grab more attention....if more people run SLI Gigabytes....but obviously, not many people are running SLI Gigabytes
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post #1054 of 1506
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Originally Posted by steven88 View Post

It's more of the principle if you ask me
I'm willing to bet this topic would grab more attention....if more people run SLI Gigabytes....but obviously, not many people are running SLI Gigabytes

This isn't a Gigabyte thing, it's a Kepler thing. Every Kepler from every company is going to do this unless you get extremely lucky or buy a used card that you know runs at the clocks you want.

Honestly if it doesn't cause problems I dunno what the fuss is about. Asynchronous SLI has been supported since like the 190-series driver ... I have to think they 'have it down' at this point.

I believe what will happen is that you'll get the card with the faster clocks running at slightly lower % usage ... IOW, behind the scenes, the driver will sync the two, and the cards will be working at the same speed despite the clocks appearing different.
    
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post #1055 of 1506
Quote:
Originally Posted by xGHOSTx View Post

What about the possibility of flashing these cards with a GB 680 bios? That PCB looks identical to the 680

Different chip...so 0%
 
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post #1056 of 1506
Is it possible for my boost clock to add 235 mhz? GPU-Z reading my OC as 1105mhz and max of 1339 mhz on the sensor.

375
Edited by ohhgourami - 5/22/12 at 12:55am
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post #1057 of 1506
Quote:
Originally Posted by ohhgourami View Post

Is it possible for my boost clock to add 235 mhz? GPU-Z reading my OC as 1105mhz and max of 1339 mhz on the sensor.

375
Sure, a good number of folks here are hitting 1300+
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post #1058 of 1506

Newegg customer feedback for this card just dropper to 4 from 5... 

 

4 users gave the GPU 1 star.

 

3 of them having crashes

1 of them having SLI not being recognized.

 

I hope my version will be a good one. Lol.

post #1059 of 1506
Quote:
Originally Posted by ohhgourami View Post

Is it possible for my boost clock to add 235 mhz? GPU-Z reading my OC as 1105mhz and max of 1339 mhz on the sensor.

235 would be the biggest Kepler Boost I'm aware of, but your evidence shows it's possible. It's starting to look a bit like the higher that number is, the higher the chances you got a good overclocker, so ... lets see what that baby can do over the OC'ing thread thumb.gif
Quote:
Originally Posted by deafboy View Post

Different chip...so 0%

It would probably successfully flash, and there's been reports that it'll increase available power limit % (not that this is useful .... yet), but if the hope was to unlock shaders I'd say the chances are 0%, indeed.
Edited by brettjv - 5/22/12 at 8:18am
    
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post #1060 of 1506
Quote:
Originally Posted by steven88 View Post

It's more of the principle if you ask me
I'm willing to bet this topic would grab more attention....if more people run SLI Gigabytes....but obviously, not many people are running SLI Gigabytes

I'm running SLI Gigabytes. +60/+400 I think gets me to around 1210 on one card while the other card is at 1170 I believe. 15000 in 3DMark11. Fun!
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