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Hawaii Bios Editing ( 290 / 290X / 295X2 / 390 / 390X ) - Page 290

post #2891 of 3743
Alright will do, im am however curious what options on there make it stick at full speed....

Will check back with results.

Thank you!

EDIT:

Okay it looks like AMD cards have a limitation that makes the ram stay at 100% speed when reducing the blanking below 39ish;
Copy paste from CRU forum:

" •The video card will not reduce clock speeds when idle if the vertical blanking/total is too low. Horizontal values can still be reduced if necessary

.◦AMD/ATI cards require the "LCD standard" vertical blanking/total to reduce the memory clock when idle.
"

Basicly it must be at 39 or above for the ram to drop to lower DPM
Edited by SilverShine1 - 6/17/16 at 6:24am
post #2892 of 3743
are the memory latencies slower on the 390 bios vs the 290 ?

my Sapphire Tri-X (Hynix) struggled above 1440 or so on the memory - I'd get occasional artefacts and sometimes on coming out of standby/sleep I'd get a black screen in windows - which took LOTS of reboots to sort out

with the 390 bios I'm now seemingly running at 1575 and still testing up higher with no issues so far smile.gif
post #2893 of 3743
@buckster: yes
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post #2894 of 3743
I haven't been on this site in a while and decided to try bios editing again. I stopped because I had this problem where my card would idle at ~50W with my overclocked Korean monitor vs ~10W with my 1080p ASUS monitor.

To fix it all I had to do was change my DPM 5 and 6 voltages manually to the match the values in DPM 7. Now I can have fun playing around with bios editing again. smile.gif
post #2895 of 3743
The higher power consumption means that ram is not clocking down when overclocking the monitor;
I had the same thing; il copy paste to you what you can do to fix it other then dropping the DPMs;


[...] Okay it looks like AMD cards have a limitation that makes the ram stay at 100% speed when reducing the blanking below 39ish;
Copy paste from CRU forum:

" •The video card will not reduce clock speeds when idle if the vertical blanking/total is too low. Horizontal values can still be reduced if necessary

.◦AMD/ATI cards require the "LCD standard" vertical blanking/total to reduce the memory clock when idle.
"

Basicly it must be at 39 or above for the ram to drop to lower DPM [...]
post #2896 of 3743
Try change timing standard of your overclocked monitor, my monitor stay at its overclocked speed with default timing.

Here for example,


So i changed my timing standard to "CVT Reduced Blanking" and the mem speed downclock back to 150 MHz when idle,

I hope it helps somehow. smile.gif
post #2897 of 3743
Quote:
Originally Posted by SilverShine1 View Post

The higher power consumption means that ram is not clocking down when overclocking the monitor;
I had the same thing; il copy paste to you what you can do to fix it other then dropping the DPMs;


[...] Okay it looks like AMD cards have a limitation that makes the ram stay at 100% speed when reducing the blanking below 39ish;
Copy paste from CRU forum:

" •The video card will not reduce clock speeds when idle if the vertical blanking/total is too low. Horizontal values can still be reduced if necessary

.◦AMD/ATI cards require the "LCD standard" vertical blanking/total to reduce the memory clock when idle.
"

Basicly it must be at 39 or above for the ram to drop to lower DPM [...]

Quote:
Originally Posted by Ashraaf View Post

Try change timing standard of your overclocked monitor, my monitor stay at its overclocked speed with default timing.

Here for example,


So i changed my timing standard to "CVT Reduced Blanking" and the mem speed downclock back to 150 MHz when idle,

I hope it helps somehow. smile.gif

I'm running my monitor at 120hz, to get it to work I had to lower the values from the native setting. GPU-Z shows the same wattage ~10W at both 60hz and 120hz,
but I can see that my GPU's idle temp goes from 36 to 43.

I tried using the LCD Native settings and the memory clock won't go down. There's no way I can run my monitor at 120hz with the standard settings
the pixel clock goes from 466 mHz to 497 mHz and gives me problems.

So I guess my problem is half fixed? In any case I'm really happy it no longer idles at the DPM 7 voltage anymore.
post #2898 of 3743
Quote:
Originally Posted by Ironsight View Post

So I guess my problem is half fixed? In any case I'm really happy it no longer idles at the DPM 7 voltage anymore.
May I know what is the voltage you set for DPM 5, 6 & 7? What is the voltage & memory frequency at idle reported by GPU-Z?
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post #2899 of 3743
Quote:
Originally Posted by kizwan View Post

May I know what is the voltage you set for DPM 5, 6 & 7? What is the voltage & memory frequency at idle reported by GPU-Z?

Sure I have it set to 1350 for DPM 5, 6, and 7 (it was 1250 stock).

60 Hz - 1.008 V and 150 MHz. (LCD standard timings)
120 Hz - 1.000 V and 1375 MHz. (Manual lowered timings)

Judging by the pixel clock, I'd have to run my monitor at 110hz to make it work with LCD standard timings.
post #2900 of 3743
Quote:
Originally Posted by Ironsight View Post

Quote:
Originally Posted by kizwan View Post

May I know what is the voltage you set for DPM 5, 6 & 7? What is the voltage & memory frequency at idle reported by GPU-Z?

Sure I have it set to 1350 for DPM 5, 6, and 7 (it was 1250 stock).

60 Hz - 1.008 V and 150 MHz. (LCD standard timings)
120 Hz - 1.000 V and 1375 MHz. (Manual lowered timings)

Judging by the pixel clock, I'd have to run my monitor at 110hz to make it work with LCD standard timings.
Thanks. smile.gif
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