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Quick guestion, about Memory clock vs Core

post #1 of 9
Thread Starter 
Hi, well Im using a 7300GS right now, getting an 8800GT 512mb tomorow. Never overclocked in my life, but thought oh what the hell, dont care if this vid card breaks. Downloaded riva tuner, went into a game (ET) watched in game, my fps was on 160.. then i upped my core clock and memory clock from 550 to 650 or something, i was amazed.. instantly it went from 160 to about 210 fps. (also went up about 4degrees temp

Anyway, i did some testing, and found that Memory clock is the one that gives me more fps, and Core clock seems to do nothing except boost my temperature.

My stock speeds were at about 500 memory and core, it allows me to bring them down to about 270, and up to about 825.

I tried to put down core clock to 270, and memory clock up to 875 to balance it out in temperature, seems to have stayed the same temp except given me alot more frames.. now whats the downside of this? i know people love there core clocks up as well.. im just wondering what Core actually does, it didn't seem to boost my fps when bringing up the core clock.

Thanks guys love this community, i feel somewhat addicted and i can tell im gonna go overclock everything i can, because im a hardcore gamer and i cant stand not having as much fps as i can possibly get.
    
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post #2 of 9
7300GS->

Memory Interface : 64bit

Memory bandwidth : 6.5GB/s

The reason you'd see a boost in frames from increased memory speed and not the core is simple... Your card's bottleneck comes from the memory bandwidth. Jumping up to an 8800gt you might notice the same thing when gaming at high resolutions (1600x1200+) with AA enabled.
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post #3 of 9
Thread Starter 
So does that mean its good to reduce core clock, up the memory clock to keep the same temps but more fps?

im on a steady 78degrees on load right now. with almost double the fps i used to get..

used to get around 80 degrees anyway normally on a game
    
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post #4 of 9
Quote:
Originally Posted by xEnt View Post
So does that mean its good to reduce core clock, up the memory clock to keep the same temps but more fps?

im on a steady 78degrees on load right now. with almost double the fps i used to get..

used to get around 80 degrees anyway normally on a game
Well personally, I'd at least keep the core @ stock clocks... Have you tried increasing fan speed through rivatuner?

If you haven't here's a really quick guide I threw together that might help ya figure it out,

http://www.overclock.net/nvidia/3174...-schedule.html
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post #5 of 9
i don't think the memory bandwidth will be a problem with the 8800gt,i never found a fps increase with my card by increasing memory clocks.did you take the mem from 500 to 825?thats a pretty big increase.
also lowering the core clocks would not balance out the temperatures,the ram chips have different temperature than the core and lowering core clocks should only decrease the core's temperature.
    
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post #6 of 9
Thread Starter 
Uhh strange, i dont have that Fan tab in my settings part.. is it because im using riva tuner 2.09? and ur guide is 2.08, i dont think they would have made an updated version not include the fan, maby my graphics card just is not compatible with a fan
    
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post #7 of 9
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and its strange.. with the core clock down and the memory clock from 500 to 825, its actually gotten cooler, or so riva tuner says..
    
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post #8 of 9
Quote:
Originally Posted by xEnt View Post
and its strange.. with the core clock down and the memory clock from 500 to 825, its actually gotten cooler, or so riva tuner says..
read what i wrote...,touch your ram chips i bet they would be exploding hot right now.
    
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post #9 of 9
memory clock is usually the most effective. But usually the core and memory will overclock independently- ie your max core will be essentially the same with overclocked memory as it will be with stock clocks on the memory

good luck!

ps. atitool is good for checking for stability. 20min artifacting test and you know you're pretty stable.

-Mark
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