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Having Trouble Oc'ing my 8800GT - Page 2

post #11 of 18
What you need to understand is that eVGA uses 3 different chips. 1 is older and it's not being used in the newer models, Quimoda. The 2 that are used right now are the Hynix and Samsung chips.

The Hynix is the worse of the 2 because it takes 2.2v for the memory to run at 900Mhz. The Samsung chips run 900Mhz at 2.0v.

The Samsung chips are the ones that are used on the Ultra's, GTX's, and the high level GTS's. Also, the eVGA 8800GT SSC and the Akimbo SC both come with Samsung chips. The rest of them, it's hit or miss. Some Hynix chips have been known to OC well but the Samsung's can push the limits and actually hit 1100Mhz.

Also, since you have a stable clock at about the KO speeds. Go ahead and flash the bios with the KO bios. It's covered under eVGA warranty that you can flash the bios with any version so long as it is the official eVGA bios. That way you can use it as a stepping point and go from there. One guy used the method and he was able to push his card past 975Mhz memory clock.
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post #12 of 18
Quote:
Originally Posted by 10acjed View Post

here it is.. Needless to say its not working too well... And this was from setting pcie freq too high in bios, not overclocking so dont get nervous, it wasnt even OC'd when this happened


What frequency were you using on the PCI-e if i may ask.
My PCI-e is overclocked right now, and i would like to know if i could go higher or if i should stop where im at.
post #13 of 18
I have the basic version 600mhz stock core and have them at 702/1728/1000 easily, I have a really good airflow case CM-690 with 8x120mm fans and the temps are idle 41, 44 load 55, 59.
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post #14 of 18
Thread Starter 
Quote:
Originally Posted by KamuiRSX View Post
What you need to understand is that eVGA uses 3 different chips. 1 is older and it's not being used in the newer models, Quimoda. The 2 that are used right now are the Hynix and Samsung chips.

The Hynix is the worse of the 2 because it takes 2.2v for the memory to run at 900Mhz. The Samsung chips run 900Mhz at 2.0v.

The Samsung chips are the ones that are used on the Ultra's, GTX's, and the high level GTS's. Also, the eVGA 8800GT SSC and the Akimbo SC both come with Samsung chips. The rest of them, it's hit or miss. Some Hynix chips have been known to OC well but the Samsung's can push the limits and actually hit 1100Mhz.

Also, since you have a stable clock at about the KO speeds. Go ahead and flash the bios with the KO bios. It's covered under eVGA warranty that you can flash the bios with any version so long as it is the official eVGA bios. That way you can use it as a stepping point and go from there. One guy used the method and he was able to push his card past 975Mhz memory clock.
How do I determine what kind I have? I got the card jsut after it came out (Decemberish)...

I also have just ordered the AKIMBO cooler, so maybe that will help...
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post #15 of 18
Well when you take off the stock cooler, it will be listed on the Ram chips themselves. Also, inside the bios utils for the video card, you can see what voltage the ram chips are using. If it's 2.0 it's Samsung, if it's 2.2 it's Hynix.
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post #16 of 18
Quote:
Originally Posted by Arakasi View Post
What frequency were you using on the PCI-e if i may ask.
My PCI-e is overclocked right now, and i would like to know if i could go higher or if i should stop where im at.
125 - really wasnt on purpose either, I was fidgeting around in bios to try n get my cpu stable and forgot to set it back.. I went thru this with a 7 series trying to OC it and knew it sounded high..

179$ mistake on my part Personally, I wouldnt mess with it, most say 110-115 is ok, but Im not risking it for a few Mhz..
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post #17 of 18
Okay thanks, my PCI-e slots are overclocked at 110mhz

Slot 1 - 110

Slot 3 - 100

Slot 2 - 110

Somethin like that... 1 and 2 carrying my Cards.... 100 being default
post #18 of 18
Thread Starter 
Quote:
Originally Posted by Arakasi View Post
Okay thanks, my PCI-e slots are overclocked at 110mhz

Slot 1 - 110

Slot 3 - 100

Slot 2 - 110

Somethin like that... 1 and 2 carrying my Cards.... 100 being default
Does this acutally help preformance??
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