Shader Clock Overclocking Tutorial

so how exactly i can change it?? i cant find that registry key ur tlaking about ...

 

I understand what they are and they are in fact separate from the high performance 3d. The thing is my speed dropped sometime during the test to 2dclocks but the ram remained at high performance 3d clocks.

 

BTW Unwinder my Shader/ROP clock ratio seems to go from 2.0 to 2.79 every thing out side this range doesn seem to change any thing RivaTuner wont hold any settings if i go outside that range. I hope that that info is of any help to U.

BTW Thanx for the awsome Tool i have been using it for a very long time and always worked great! Keep up the good work.

 

note, this is within RivaTuner's own registry, not the windows registry. from the guide above:
"It can be found under the power user tab, RivaTuner->Nvidia->Overclocking"

 

so if i dont change anything jsut oc the rop/core ... it will be the default ratio??

ie .. rop @ 648 = 1512 shaders?? for GTS

 

where can i find this "NVAPIUsageBehavior" registry??

ahh gotcha winder

here i cant seem to change the ratio of it .. at 2.6.. i should be getting 1333 ...

http://img212.imageshack.us/img212/4448/shot0102kl8.jpg

 

SM2 not increase in 3Dmark6

Hi,
my setup is in my profile and I would like to ask a few questions.
First of all 2.04 rocks!!!
When I overclock keeping ratio with -1 parameter in 3Dmark06 the results increase onlu SM3 marks and SM2 stay at 3750 3760 3755 and so and SM3 increase from 4220 to 4409 with 621 / 1453 / 945
Is this normal or I make some bad? Drivers 163.67

Somewhere on Guru3D I found GTX that are 648 / 978 OC but I got fault over 621 / 945. This behaviour is depend from piece to piece how much can be OC? Or exist others revisions 90nm and 65nm chips?

Thanks
Jx

 

Using 163.69, Vista and 8800GTX, when I try and enable shaderclockratio regardless of ratio riviatuner just closes and when I restart it's still disabled. Any ideas why this isnt working?

 

-1, and 2.5, what am I missing here apart from a brain that is?

 

Ok, neithermind. I been pressing ok, it's working.. /me smacks head against keyboard. :bang:

Thanks for the help and the software.

 

Yep, thats my old system, only part thats the same is the PSU.

Oh well, off to test new shader clocks. :cheers:

EDIT: Pretty good results I think, 648 with 2.65 ratio is giving me shader clock of 1728 on my 8800GTX which seems to be working fine. Very cool.

 

Overclocking of core don't work for me... When i set 660 as core clock and click apply it goes back to stock clocks...

I'm using 163.69 drivers and rivatuner 2.04...

How can I overclock???

 

are you able to overclock the core by a much smaller amount?

if yes, then read the guide in this thread, it will help you out.

 

you have to go to power options, nvidia, overclocking and set the clock ratio to a custom one (2.0-2.7) or auto shader clock (-1). Btw im running stable 648/1620/1008, not sure what the problem was before. Thanks a lot!

 

As always a top notch release, thank you sir.

One thing ive noticed on my system (GTS) is that when i set shadertoclock ratio above 2.65 (eg 2.7) performance severely drops. For example, i used to run 648/1512 at all times. With this release im capable of doing 648/1672, and notice a good performance improvement. However, setting the ratio to 1.7, resulting in 648/1728 causes performance to drop back to 648/1512 levels, even though rivatuner monitor is showing the frequencies correctly staying at the higher shader clocks. I assume this has something to do with the ROP/Shader domain being to far you mentioned earlier.

Regardless, excellent release that works very well. Thank you very much sir.