ATI overdrive

Tpex

Tpex

Teh Cyber Ninja
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Ok so got myself a HD4650 a few days ago, and I've noticed CCC comes with something called overdrive, had some bad memories with overclocking so I left it, was playing oblivion on full and I noticed the fan speed up....
So I check CCC again and see that overdrive has been enabled, but now eird thing is my cards GPU is rated 600mhz and overdrive had it at 300mhz :eek: same thing with the VRAM frequency, Now I gather that overdrive "overclocks" your card when playing games, then brings it back down to those disgusting speeds.... to save power I assume.

So 2 questions

1) Is This true?
and 2) Does CCC need to be running in the taskbar for overdrive to work? (maybe that is why crysis lags :mad:)
 
Try setting your stock speeds in overdrive. Your crysis lags cause you got a 4650 lol!
 
Tpex said:
Ok so got myself a HD4650 a few days ago, and I've noticed CCC comes with something called overdrive, had some bad memories with overclocking so I left it, was playing oblivion on full and I noticed the fan speed up....
So I check CCC again and see that overdrive has been enabled, but now eird thing is my cards GPU is rated 600mhz and overdrive had it at 300mhz :eek: same thing with the VRAM frequency, Now I gather that overdrive "overclocks" your card when playing games, then brings it back down to those disgusting speeds.... to save power I assume.

So 2 questions

1) Is This true?
and 2) Does CCC need to be running in the taskbar for overdrive to work? (maybe that is why crysis lags :mad:)
Click to expand...

well, it's called power saving. Basically your card has clock speeds that it is rated for under load (600mhz), and memory frequencies it is rated for. However, when it's not under any load, then your card pretty much just drops those rated speeds to save power (automatically, it does it when not under any load). So when you are gaming, it doesn't "overclock" the card, it brings it to it's rated speed.

And no, it's the card itself that does it. There's certain codes on the cards bios that drop the rated speeds on the fly. The reason why crysis is lagging is because the settings are to high. Try drop the resolution (the card does not have enough bandwidth to run at epic resolutions), make sure the card doesn't have any AA (it doesn't have enough ROPs to make for decent AA, it doesn't have enough shaders to make for decent AA and it doesn't have enough bandwidth to make for decent AA). Make sure shaders aren't enabled, those can kill a processor. Just set everything to lowest, and then work your way up from there (use Fraps to see if your frames are above 25FPS)
 
scotty777 said:
well, it's called power saving. Basically your card has clock speeds that it is rated for under load (600mhz), and memory frequencies it is rated for. However, when it's not under any load, then your card pretty much just drops those rated speeds to save power (automatically, it does it when not under any load). So when you are gaming, it doesn't "overclock" the card, it brings it to it's rated speed.

And no, it's the card itself that does it. There's certain codes on the cards bios that drop the rated speeds on the fly. The reason why crysis is lagging is because the settings are to high. Try drop the resolution (the card does not have enough bandwidth to run at epic resolutions), make sure the card doesn't have any AA (it doesn't have enough ROPs to make for decent AA, it doesn't have enough shaders to make for decent AA and it doesn't have enough bandwidth to make for decent AA). Make sure shaders aren't enabled, those can kill a processor. Just set everything to lowest, and then work your way up from there (use Fraps to see if your frames are above 25FPS)
Click to expand...

Oh ok cool, thanks scotty, Crysis doesn't lag as such, I just thought I was being cheated. on full medium at 1024x786 I get 10-15 FPS which I am happy with, It doesn't drop below that

Thanks for the informative reply :D
 
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