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Polaris Bios Editing ( RX5xx / RX4xx ) - Page 207

post #2061 of 3297
Quote:
Originally Posted by ekoaja View Post

Rx 480 nitro+ 4gb oc to 1510 - 2200 @1.25v

Driver 17.1.2, i've tried 17.4.2 but nothing improvement in score.

And this with tessellation off i got 17.104 graphics score
With tessellation on, it scored around 16100

Hm. Can you try your overclock on Unigine superposition? My max overclock (1500@1.343 probably a lot more voltage than I need, was trying to get it stable) keeps hard crashing the system in the same spot. Unigine Heaven by the way works great and stable.
And it is not a hardlock voltage\tdp\temp (71C while benchmarking) limit as it seems.
post #2062 of 3297
Quote:
Originally Posted by datspike View Post

Hm. Can you try your overclock on Unigine superposition? My max overclock (1500@1.343 probably a lot more voltage than I need, was trying to get it stable) keeps hard crashing the system in the same spot. Unigine Heaven by the way works great and stable.
And it is not a hardlock voltage\tdp\temp (71C while benchmarking) limit as it seems.

1,343v is a damn high voltages. Watch your VRM temps. I can cause instability. I'll try superposition. What setting are you used in unigine superposition ?
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post #2063 of 3297
Quote:
Originally Posted by ekoaja View Post

1,343v is a damn high voltages. Watch your VRM temps. I can cause instability. I'll try superposition. What setting are you used in unigine superposition?
Yeah, I'm checking VRM's constantly ( warming up to 65-70). I'm using 1080p extreme preset.
Thank you!

upd. seems like my card is a turd, that's it. 1500 Mhz requires exactly 1.344v in heaven, and it's only 0.06v before 1.35v protection kicks in.
Anyway, if someone interested: 1500@1.344 + 2085@Uber mix extreme

Can't wait to see 580 benchmarks and OC results, may sell this turd and hope for a bit more silicon luck.
Edited by datspike - 4/15/17 at 2:56am
post #2064 of 3297
1.34 is really a lot of voltage even for non-heating VRM`s. I wouldn`t go higher than 1.2v for 24/7.

580 are not expected to use any newer memory technology and the only difference might be the stock clock speeds raised higher. Probably there will be some BIOS improvements added, hope so.
Edited by ziXs - 4/15/17 at 3:08am
post #2065 of 3297
Quote:
Originally Posted by ziXs View Post

1.34 is really a lot of voltage even for non-heating VRM`s. I wouldn`t go higher than 1.2v for 24/7.

580 are not expected to use any newer memory technology and the only difference might be the stock clock speeds raised higher. Probably there will be some BIOS improvements added, hope so.

Obviously I dont tun that crazy voltage 24/7. Normally I'm all about quiet operation, so it's running at 1300@1.037 and same memory settings as in that max overclock profile.
post #2066 of 3297
This is what i have achieved on stock voltage after putting a fan toward the VRM`s, fully stable 24/7 settings.
Also i restored back my timings to 1750 strap as Uber-Light gave me one error while benchmarking.

1380/2070 stock voltage, 1750 strap timings. 24/7 stable.

Removed VRM`s yellow thermal pad and placed MX-2 thermal paste over them.
Removed the stock 2mm spacers and put 1mm to increase the compression by the VRM heatsink.
This roughly decreased the Max VRM`s Temperature by ~6C from 96, to 90c.

Placing a fan towards the card decreased the VRM`s temperature by ~30C, also affecting on the GPU temperature and whole PCB running cooler.


Edited by ziXs - 4/15/17 at 6:16am
post #2067 of 3297
Quote:
Originally Posted by datspike View Post

upd. seems like my card is a turd, that's it. 1500 Mhz requires exactly 1.344v in heaven, and it's only 0.06v before 1.35v protection kicks in.
What sort of protection are you referring about? Sometimes during strong overclocking I've seen the GPU locking up and requiring the PC power to be cycled in order to recover it. Are you referring to this?


By the way, has anybody noticed that with the latest drivers 17.4.2 core voltage cannot be set above 1175mV through p-states, even if programmed in the vBIOS? Higher voltages must now be achieved with a voltage offset.
post #2068 of 3297
Quote:
Originally Posted by SSBrain View Post


By the way, has anybody noticed that with the latest drivers 17.4.2 core voltage cannot be set above 1175mV through p-states, even if programmed in the vBIOS? Higher voltages must now be achieved with a voltage offset.

Yep, same to my card with 17.4.1/2 both can't set any higher vcore even wattool except offset setting
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post #2069 of 3297
Quote:
Originally Posted by SSBrain View Post

What sort of protection are you referring about? Sometimes during strong overclocking I've seen the GPU locking up and requiring the PC power to be cycled in order to recover it. Are you referring to this?


By the way, has anybody noticed that with the latest drivers 17.4.2 core voltage cannot be set above 1175mV through p-states, even if programmed in the vBIOS? Higher voltages must now be achieved with a voltage offset.

Yeah, I'm talking exactly about that. GPU just disables everything if Vcore is more than 1.35V. I think I heard about that from buildzoid.
The only thing that will disable that - reboot.

About the second thing - yup, I was experiencing this on 17.4.1 and 17.4.2 too, trixx was not working at all. Reverted back to 17.1.2 - boom, trixx can regulate the voltage.
post #2070 of 3297
And things are going further. My card is not one of the best overclockers as it requires for 1400 +50mv.

This is the heaviest benchmark i can run putting down the card on its maximum power draw.
I do see that the power output depends on the temperature of the VRM`s, as beyond 80C i think they are losing efficiency and starting to leak, but this is just a a thought.

70C on VRM`s on 200% resolution scale is very very good , almost nothing could load the card as much as this game.

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