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 NVIDIA® GeForce® 8800 GT, Official Overclocking Discussions...

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ezinger
post Apr 4 2008, 03:26 AM

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QUOTE(cstkl1 @ Nov 23 2007, 08:03 PM)
not yet
both cards has been flashed
to a better bios than the ssc.. the xfx ADE XXX...
y better the ADE XXX bios doesnt suffer the problem of depreciating performance when u keep overclocking even though its artiact free...
the SSC has that bug... the ADE XXX bios are newer.

test it.. it was debated quite heavily in XS..
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i'm looking at the xfx ADE XXX bios, the clocks are lower than the SSC. how is that better?

when you say the performance depreciates, then it's pointless to overclock to a frequency that has the same performance on a lower frequency. hence, futile...

QUOTE(r4st4m4n @ Mar 1 2008, 01:50 PM)
My memory doesn't overclock very well. For the moment I leave it at 950MHz (1800MHz) in order to make sure that it won't give me instability. Once I found the max on the core and the shaders, I'll OC the memory.

But from the first result I have, it seems the memory is unstable over 993MHz (1986MHz). It is slightly under the result I had with the stock cooler (1000+MHz). It might be due to the 2 memory chips under the HR-03 GT heatpipes. The heatsink provided for them are tiny because the heatpipes are just on top of them, so maybe the cooling capacity is slightly worse than with the stock cooler. It doesn't really matter since the performance increase when OCing the memory by few MHz is barely noticeable.

800 MHz is definitely possible, the hr-03 GT can handle the heat easily. From my first testings, I think I should be able to do around 840MHz core and 2100 MHz shaders at 1.3V and it should be fully stable in games.  smile.gif
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rofl this guy is funny sweat.gif

the first memory clock value was incorrect but then he got the second memory value correct..wtf..lol
wiNd
post Apr 4 2008, 10:27 AM

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galaxy 8800gt dual slot owners...no OC review?
OC4/3
post Apr 4 2008, 01:14 PM

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clawhammer get 760core/1900shader.

Here is my result:
user posted image

Spec in sig.I only limit the oc to 700core/1750shader since i don't want to kill my GT again.
clawhammer
post Apr 4 2008, 06:20 PM

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QUOTE(vincentlaw @ Apr 3 2008, 11:47 PM)
hmm that is a maybe for not clean old driver.... anyway try to use driver cleaner pro to remove it.... uninstall nvidia driver... driver cleaner pro to clean nvidia thggie, install the latest WHQL driver and bench again... remember to off ur background application too...


Added on April 3, 2008, 11:56 pm
Zzzzz so high... mine just 13.8k... lose out interms of CPU to u??
» Click to show Spoiler - click again to hide... «

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Maybe it's the drivers? I'm not sure too.
IcEMoCHa
post Apr 4 2008, 09:29 PM

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how much volts does the bios limited to?... i have a feeling after setting above 1.1v in bios there isn't any effects...
clawhammer
post Apr 5 2008, 02:04 PM

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QUOTE(IcEMoCHa @ Apr 4 2008, 09:29 PM)
how much volts does the bios limited to?... i have a feeling after setting above 1.1v in bios there isn't any effects...
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From what I read, it should be 1.1V max if done via softmod. Anything higher, you need to solder.
IcEMoCHa
post Apr 6 2008, 10:42 AM

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i see... will vmod do any harm?...
likito
post Apr 8 2008, 06:54 PM

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so quiet this thread ...
the best i managed to achieve 710mhz . have to try again next time ..
any suggestion during overclocking 88GT ..
OC4/3
post Apr 8 2008, 08:10 PM

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QUOTE(likito @ Apr 8 2008, 06:54 PM)
so quiet this thread ...
the best i managed to achieve 710mhz . have to try again next time ..
any suggestion during overclocking 88GT ..
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Make sure core to shader ratio is not more than 2.6(shader/core).
vincentlaw
post Apr 8 2008, 08:15 PM

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QUOTE(OC4/3 @ Apr 8 2008, 08:10 PM)
Make sure core to shader ratio is not more than 2.6(shader/core).
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huh if over??? mind to explain more indetails or give us any link that explains it?
OC4/3
post Apr 8 2008, 08:16 PM

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QUOTE(vincentlaw @ Apr 8 2008, 08:15 PM)
huh if over??? mind to explain more indetails or give us any link that explains it?
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That what i heard from my oc sifu,bryan.More will artifact one.

ben_panced
post Apr 9 2008, 05:17 PM

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QUOTE(OC4/3 @ Apr 8 2008, 08:16 PM)
That what i heard from my oc sifu,bryan.More will artifact one.
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nola.. hmm.gif
why dun u try it urself by using rivatuner.. see whether it artifacts or not

clawhammer
post Apr 9 2008, 05:48 PM

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When it gets too hot, unstable then you'll be getting artifacts.
vincentlaw
post Apr 9 2008, 06:31 PM

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so the 2.6x multiplier of coreclock:shader clock is true or not?
OC4/3
post Apr 9 2008, 08:39 PM

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QUOTE(vincentlaw @ Apr 9 2008, 06:31 PM)
so the 2.6x multiplier of coreclock:shader clock is true or not?
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Don't know.I mean max is 2.6,anything more will artifact.Can try to ask bryan sifu to post here
likito
post Apr 10 2008, 01:05 PM

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@oc4/3 , @clawhammer , i dont understand .. sweat.gif
wat is 2.6 ratio , where i can see it ..

here is mine by default core/shared/memory
user posted image

This post has been edited by likito: Apr 10 2008, 01:08 PM
Hyde`fK
post Apr 10 2008, 02:11 PM

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Shader/core = 1512/601 = 2.5158

As for 2.6 ratio, don't think it's kinda true. I can run mine 730/1940 stable which is 2.65x ratio already. And stable @ 770/1940 which has lower ratio.

This post has been edited by Hyde`fK: Apr 10 2008, 02:14 PM
likito
post Apr 10 2008, 09:41 PM

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QUOTE(Hyde`fK @ Apr 10 2008, 02:11 PM)
Shader/core = 1512/601 = 2.5158

As for 2.6 ratio, don't think it's kinda true. I can run mine 730/1940 stable which is 2.65x ratio already. And stable @ 770/1940 which has lower ratio.
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did u vmoded on ur gc ? stable at 770 . jealousnya ...
alive88
post Apr 10 2008, 09:44 PM

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what is the safe temp for a gc? my msi 8800gt is very hot..guess its bcoz of the single slot cooler...how to improve the cooler without installing any 3rd party cooler?
Hyde`fK
post Apr 10 2008, 09:58 PM

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QUOTE(likito @ Apr 10 2008, 09:41 PM)
did u vmoded on ur gc ? stable at 770 . jealousnya ...
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Vmodded, but still don't go high core eventhought I've pumped 1.4v.


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