chemat

i have the asus 8800 ultra,, im hitting a wall at

Core clock: 710mhz
Memory Clock: 2340mhz
Shader Clock: 1754mhz

i am using rivatuner to OC it and ati-tool to stress it is that ok?

i am using forceware 169.21 drivers and getting a 3dmark06 score of 15506

temperature is not an issue as i am scanning for artifacts on ati tool and the highest its been is 53c as i have a hr-03plus with a vizo double ball bearing fan on it

is there a trade secret to it... for instance do i unlink m shader and core clocks.... or is there a ratio where for me to any higher on these... my memory clock has to go up...well that's givng me my headache right now...

my goal is go much higher as i noe i can with the cooling i have... it is adequate... thanks for any replies or help guys... appreciate it

G|F.E.A.D|Killa

you could search for a volt mod or something like that.

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I heard Ford is coming out with heated bumpers in 2010 so your hands don not get cold while pushing it.

chemat

whats that killa? could you explain more? apologies for being a noob in that expect of oc....modding!

laurie

My Ultra is water cooled and wont go as high as yours. You are doing well all ready.

Jura55ic

hi i new to overclocking gfx cards other than in Ntune (which sucks)

ive been told to try rivatuner does this keep the setting so that when u reboot the gfx card will stay overclocked? and all so what do ya reckon is a stable clock for my 8800 ultra i have EK waterblock on it and the temp is 22c idle according to Everest.

ive only ever taken it upto black pearl speeds in ntune

laurie

Man thats cold.
River tuner will keep the settings yes. I would use atitool to scan for artifacts as you push the clock up.

My core is at 702, the next step is 720 which my card cant hold.
My ram is at 1151.
Every card is different and you will need to have a go to see how high you can go.
Nobody can tell you what speeds to use.

Good luck.

chemat

well thats good to know laurie... but my temps are only at 53c with this overclock value... so logically speaking i can oc it more right?

but im guessing im hitting a bottleneck... as above 710 on core or above 1200 on memory, artifacts could be found in ati... so what now? i heard there's some technique called volt mod... what the hell is that?

GaarBear

chemat, temperatures aren't the only things that limit overclocks. Voltages limit overclocks too. All cards reach a limit regardless of temperatures.

(nice OC btw)

Luke312

What the hell, my ultra would explode at that speed.

laurie

Yes temps are not the only issue. Some chips just have a lower upper limit than others.
What are you using to measure your Clock speeds? Because what you set it to in Riva is not the actual clock speed.
You will need something like everest to check your actual speeds. Mine jumps from 702 to 720. I would thing they are all the same.

A volt mod is a risky thing to do. You have to cut traces and solder bits and bobs onto the card. Dont do it.
My card hits 40c-44c at max load and I cant get any more out of it.