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Polaris Bios Editing ( RX5xx / RX4xx ) - Page 181

post #1801 of 3428
Quote:
Originally Posted by chris89 View Post

@adamvx Sup man? I just was curious how and where you found the hex offset etc? May I help you with anything?

I would like to know more about offest and voltage setting.
What's the difference between both?
I would like to know how to find offsets on another vendor's cards
I would like to mine with my cards (besides of Sapphire I have gigabyte and asus 470) and I would like to do it on Linux.
On Windows I can set everything with Wattool.. but Windows has many "feautures" which cause huge mess.. But on linux I cannot get less than 125W/card and I am little annoyed about this
I would like to get less than 120w a card stable. So bad that lowering mem voltage below 1000mV in Polaris doesn't work.

I should set core about 1150mhz and mem about 2030Mhz.. some watt to cooling (fan to about 60-70% will be sufficient I guess so I do not need to use all available power for fan...
I hope you people here could help me as I am trying to help if I can.
Regards!
post #1802 of 3428
@adamvx
What cards do you have? Sapphire Nitro+ uses a voltage offset on its performance profile, so it's real easy to modify it in BIOS to whatever you like.
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post #1803 of 3428
@adamvx Okay, I understand now you wish to reduce power consumption? Why might I ask? PSU limitation?

If you send your BIOS to me, I can limit it's power limit by temperature and not the total amount of watts. Since power limiting watts/ amps will also take half your fps.

We can use way more power up until the temperature limit is reached and then throttle, but we can avoid throttle if there is plenty of airflow and lots of turbulent cfm.

So yeah, upload your bios .rom via a .zip and I can show you what I mean. We could actually set the clock sky high, and set the temperature limit to the value at which meets your desired amount of power to use. This would require testing and documenting of load power stats.

LMK wink.gif
post #1804 of 3428
Quote:
Originally Posted by Loladinas View Post

Not sure if this has came up in the thread before, maybe someone already has the answer...
Since my GPU fans are controlled from a motherboard header, is there a way to permanently set fans to off in the ROM? Maybe any of you have any links to start reading on the issue?

This is rom the sapphire nitro + oc opened with HxD



do not know if your rom is the same then check please
however, you might set in 0000 instead of FC 08 (FC 08> ENDIAN 8FC> Decimal 2300= MAX RPM),
set at 00 instead 0F (0F> decimal 15: 15% * 3200 = 480 = MIN RPM)
Test at your own risk if you want and possibly confirm if it works.
I apologize for my english (Google Translate)
Greetings
Edited by Leons - 4/5/17 at 9:32am
post #1805 of 3428
Quote:
Originally Posted by Leons View Post

This is rom the sapphire nitro + oc opened with HxD



do not know if your rom is the same then check please
however, you might set in 0000 instead of FC 08 (FC 08> ENDIAN 8FC> Decimal 2300= MAX RPM),
set at 00 instead 0F (0F> decimal 15: 15% * 3200 = 480 = MIN RPM)
Test at your own risk if you want and possibly confirm if it works.
I apologize for my english (Google Translate)
Greetings
Yup, my rom was the same, but nope doesn't seem to do anything. The rom works, but the controller still sends out a PWM signal once it reaches the temperature threshold. But thanks nonetheless, at least now I have a starting point to try and figure out things from.
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post #1806 of 3428
Quote:
Originally Posted by Loladinas View Post

Yup, my rom was the same, but nope doesn't seem to do anything. The rom works, but the controller still sends out a PWM signal once it reaches the temperature threshold. But thanks nonetheless, at least now I have a starting point to try and figure out things from.

Thank you for the reply.
Other parameters that I know for the fans:



E4 12 Sensitivity is (4836)
30> decimal 48 = 48°C (the temperature at which the fans stop)
38> decimal 56 = 56°C (the temperature at which the fans are operated)

Bye
Edited by Leons - 4/5/17 at 10:33am
post #1807 of 3428
sapphire480_8g_07_black-boost.zip 109k .zip file

What is most important to me is to decrease power consumption.
For mining I need high mem and low core (but not lower than about 1100-1150 - depends on cards and timings)
In Windows I can set about 890mv (with 4x6,25mV offset) and it works good at least few days..
But there's no such a tool like WatTool in linux (in console especially)
so I have to find another way...

For fan and temperature control I have great tool in Claymore miner.
I know that this card could perform good at 110W or even less (I heard about 90w) -> it could perform little slower if power saving will be decent
Edited by adamvx - 4/5/17 at 11:39am
post #1808 of 3428
Quote:
Originally Posted by adamvx View Post

sapphire480_8g_07_black-boost.zip 109k .zip file

What is most important to me is to decrease power consumption.
For mining I need high mem and low core (but not lower than about 1100-1150 - depends on cards and timings)
In Windows I can set about 890mv (with 4x6,25mV offset) and it works good at least few days..
But there's no such a tool like WatTool in linux (in console especially)
so I have to find another way...

For fan and temperature control I have great tool in Claymore miner.
I know that this card could perform good at 110W or even less (I heard about 90w) -> it could perform little slower if power saving will be decent
Highlighted bits should be the offset in your rom.


You should change those as per this image


To set a -25mV offset you should put it FC FF (-4 decimal converted to hex = -4x6,25mV) instead of 04 00, save the file, then open it in the Polaris BIOS editor and save it again to fix the checksum. But... like... proceed at your own risk.
Edited by Loladinas - 4/5/17 at 11:08am
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post #1809 of 3428
Quote:
Originally Posted by Loladinas View Post

Highlighted bits should be the offset in your rom.


You should change those as per this image


To set a -25mV offset you should put it FC FF (-4 decimal converted to hex = -4x6,25mV) instead of 04 00, save the file, then open it in the Polaris BIOS editor and save it again to fix the checksum. But... like... proceed at your own risk.
Ok I known this method. This step only is sufficient?
Could you tell me how to do it other way (how to encode 900mV memory voltage f.e if it is possible?)

BTW How do you find this values?
post #1810 of 3428
Quote:
Originally Posted by adamvx View Post

Ok I known this method. This step only is sufficient?
Could you tell me how to do it other way (how to encode 900mV memory voltage f.e if it is possible?)

BTW How do you find this values?
http://www.overclock.net/t/1621800/would-appreciate-help-in-finding-editing-the-voltage-offset-in-the-rx480-bios/10#post_25860237 this post and that whole thread in particular. Watch the video linked.
Sapphire RX 480 rom already has the offset in it, so you don't need to add as much stuff, just change the bits representing the offset itself.
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