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Gigabyte GTX 670 OC Version *HANDS ON* - Page 105

post #1041 of 1506
Well, I thought that I would never do this but I did. I returned my GB 670 OC. I didn't OC as high as some others here but that wasn't the only reason. When I decided to really look into the stability of the card that I had, it wasn't that stable in OC. Yeah, I could do one session of Heaven with everything maxed with +100 core clock and +550 Memory clock but it wouldn't stay up for more than 10 mins. Hell, if I had only +100 core clock, it still wasn't stable.

Will I get another GB 670 OC? Prolly. As it is I have to RMA my PSU so when machine is back up and running, I will look again to Amazon for the GB card and hope that I get a better specimen the 2nd time around.
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post #1042 of 1506
Quote:
Originally Posted by nismofreak View Post

Well, I thought that I would never do this but I did. I returned my GB 670 OC. I didn't OC as high as some others here but that wasn't the only reason. When I decided to really look into the stability of the card that I had, it wasn't that stable in OC. Yeah, I could do one session of Heaven with everything maxed with +100 core clock and +550 Memory clock but it wouldn't stay up for more than 10 mins. Hell, if I had only +100 core clock, it still wasn't stable.
Will I get another GB 670 OC? Prolly. As it is I have to RMA my PSU so when machine is back up and running, I will look again to Amazon for the GB card and hope that I get a better specimen the 2nd time around.

what was your stock boost? I have two of them and one is 1189 stock and the other is 1124....and the the one that boosts 1124 stock, is a crappy overclocker...anything over 1200 and its done....while the 1189 stock one can get 1320 and maybe higher

its lame because I'm not the only one either...these cards are all over the place....but what annoys me the most is both do not run at the same speed as SLI....thats just wrong for gigabyte or nvidia to set such a wide range of stock speeds from the factory
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post #1043 of 1506
Quote:
Originally Posted by steven88 View Post

what was your stock boost? I have two of them and one is 1189 stock and the other is 1124....and the the one that boosts 1124 stock, is a crappy overclocker...anything over 1200 and its done....while the 1189 stock one can get 1320 and maybe higher
its lame because I'm not the only one either...these cards are all over the place....but what annoys me the most is both do not run at the same speed as SLI....thats just wrong for gigabyte or nvidia to set such a wide range of stock speeds from the factory

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.
    
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post #1044 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.

Good post.
post #1045 of 1506
Man I have no luck with Keplar cards. On my thiord and they all are crappy OCers. Just got my WF and it can't do 1250. Maybe my expectations were too high but I was really hoping for 1300 or more.
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post #1046 of 1506
Quote:
Originally Posted by lightsout View Post

Man I have no luck with Keplar cards. On my thiord and they all are crappy OCers. Just got my WF and it can't do 1250. Maybe my expectations were too high but I was really hoping for 1300 or more.

The expectations were too high, and it all started on pg. 1.
post #1047 of 1506
Well I've seen so many of these that were great clockers. Seemed like the bad ones were the minority. I've done so much gpu hopping lately I've spent more time without one than with over the last two months. I need to just leave it alone and be happy.
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post #1048 of 1506
Lights, are you using Precision and forcing the 1.175 volts? Also note that high memory clocks seem to compromise high core clocks and vice-versa ... and the core generally helps a lot more, so ... maybe try leaving mem at stock, forcing 1.175V, maybe cranking the fan up a little, and seeing what you can get for a core OC?
Edited by brettjv - 5/21/12 at 5:06pm
    
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post #1049 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.

Good post, but I tried with Precision to do the different offset thing and it was quite glitchy, wouldn't stay set and kept resetting + messing up fan speeds. I was uncomfortable with having the boosts be so different, plus we have no idea if it could cause stability issues down the line/etc. While the "low" card was a poor clocker I would have kept it if the speeds at least were close/matching like normal.

Anyway, I sent my "low" card back since it was running at such a different speed even at +0 offset (stock) and I was concerned... was originally going to order another 2nd card to maintain SLI but I'm having second thoughts now... my "high" card is running 1350 on the core rock-stable in Heaven (hour loop) + BF3 (several hours of gameplay+ on 64-player conquest servers). I haven't pushed the memory too high yet (tested to 6400 QDR as stable and gaining performance, it runs fine at 1350c/6600m with a gain still but I didn't try lowering 25mhz etc. yet to make sure it's ideal) .

BF3 is my most demanding regularly-played game and with very little sacrifice (SSAO vs. HBAO, and no MSAA but still running post-process FXAA) I'm holding at a steady 60fps minimum (other than really heavy explosions all around me on the ground, which the SLI would slow down for a second on too) and 70-80fps average even on Karkand maps. I'm giving serious consideration to simply staying with the single card at this point.

I do run 2560x1600, but I figure if I need more horsepower still in a few months or more either something better will be coming out soon, or I can snap up a great deal on another 670 to go back to SLI. In the meantime, this thing even as a single card runs like a dream for me.
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post #1050 of 1506
Quote:
Originally Posted by brettjv View Post

Lights, are you using Precision and forcing the 1.175 volts? Also note that high memory clocks seem to compromise high core clocks and vice-versa ... and the core generally helps a lot more, so ... maybe try leaving mem at stock, forcing 1.175V, maybe cranking the fan up a little, and seeing what you can get for a core OC?
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!
Edited by lightsout - 5/21/12 at 8:54pm
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