7800GT Memory Timings Tweaks

[snakeskinner]

Anyone fiddled with the memory timings on the 7800GT? If so, what timings worked best for you?

Also, is there a program like Rivatuner or Powerstrip that lets you change memory timings without editing the bios? I used ATI Tool to change memory timings with my X800GTO2, and it gave a big performance gain. So i'm thinking a 7800GT can't be much different.


Marlon

[Dak9767]

Riva Tuner will allow you to adjust the core and memory frequencies. I adjusted my with Coolbits by using the detect optimal frequencies option and it bumped my settings up to 514/1190 with wc. Haven't tried any higher since nothing else is oc.

[snakeskinner]

Riva Tuner will allow you to adjust the core and memory frequencies. I adjusted my with Coolbits by using the detect optimal frequencies option and it bumped my settings up to 514/1190 with wc. Haven't tried any higher since nothing else is oc.

No, I don't mean adjusting the memory and core frequencies. I mean actually changing the memory timings.


Marlon

[uSh!]

NiBiTor let's you test timings "on the fly" but for permanent changes you need to edit bios.

[snakeskinner]

I find it hard to believe that not many people change memory timings on these Nvidia cards. That seems to be a pretty common thing with ATI cards.

I wonder if thats because people have tried it and it doesn't make that much of an improvement? Or because no one has ever really tried it? Or because it requires a bios flash? (which is very simple)

I guess I get to be the crash test dummy, lol.

BTW, I know nibitor is supposed to temporarily write the memory timings to let you test them out without having to flash them. But for some reason I can't get mine to work right. To test new timings I have to flash the bios every time.


Marlon

[Revivalist]

I find it hard to believe that not many people change memory timings on these Nvidia cards. That seems to be a pretty common thing with ATI cards.

I wonder if thats because people have tried it and it doesn't make that much of an improvement? Or because no one has ever really tried it? Or because it requires a bios flash? (which is very simple)

I guess I get to be the crash test dummy, lol.

BTW, I know nibitor is supposed to temporarily write the memory timings to let you test them out without having to flash them. But for some reason I can't get mine to work right. To test new timings I have to flash the bios every time.


MarlonI have a friend who tried it and he said that he didn't notice any performance change by tightening the timings and he wasn't able to overclock any higher by loosening the timings. But I haven't tried it myself. . . .

I never saw the feature for testing timings in nibitor. I only saw the option to change them and save them. You probably want to be careful testing out timings by flashing the BIOS. If you test bad timings and the card can't post then you won't be able to see anything to flash back. (Unless you have an extra PCI video card you could use or you do a blind flash.) That's probably the reason why people don't try it.

[snakeskinner]

I have a friend who tried it and he said that he didn't notice any performance change by tightening the timings and he wasn't able to overclock any higher by loosening the timings. But I haven't tried it myself. . . .

I never saw the feature for testing timings in nibitor. I only saw the option to change them and save them. You probably want to be careful testing out timings by flashing the BIOS. If you test bad timings and the card can't post then you won't be able to see anything to flash back. (Unless you have an extra PCI video card you could use or you do a blind flash.) That's probably the reason why people don't try it.

I made a boot disc with my original bios on it that will flash it back to stock if something I change doesn't work right. I've changed a little bit, and I'll have some results later. But so far, what i've changed hasn't made as much of an improvement as I got with my ATI card. So maybe EVGA set them to optimal settings from the factory.


Marlon