Can I ask how much you offset? I tried a -100mv offset and just changed the memory timings. It was stable at around 27Mh/s, rest was left to default settings. It was stable at around 27Mh/s but haven't figured out how to get as low as 75W/card...
Please please please a million times share your rom
memory voltage to 890. Am i ok? Using low-pwr-29MH-Boysie.rom
Looks good, if you wanna squeeze out a little more, you could either OC core to 1111 and mem to 2125 or try setting core + mem controller voltage to ~880
1)core 1111 mem 2125 at what voltage? 2)core 1095 mem 2080 both at 880? the above will keep 29mhash 67watt ? the above with low-pwr-29MH-Boysie.rom using wattman?
I get it, so nothing out in the public yet. I am not sure about buying reference cards, they have a bit lower resale value. Also I cant find any 4GB refs in my country, and 8GB are more expensive than non-reference 4GB
Couple questions if someone could help: This is only possible for reference cards for some reason? Anything like this exists for non-reference ones?
each card has its own bios. all reference cards are the same so they use one bios (rx480 8gb). any different card needs other bios
That's not completely true.
And can everyone please stop using the phrase: Memory Voltage
To clarifiy this again. There is no such thing as memory voltage on Polaris.
It's VDDCI/AUX, the I/O bus voltage (between memory and GPU core).
On Fiji there is MVDDC (Pure Memory Voltage).
So those stories about lowering "memory voltage" has no effect at all, basically if you lower the voltage part under memory in polaris editor you are doing nothing. It has no effect.
It has effect when you mod it into the rom like i've recently done. (screenshot) (yes, i will release something new later this week)
@boysie@Heliox What's the latest version of the low power dual miner bios to achive 29 or 30 mh/s?
I've noticed in another thread you guys talked about the -offset to be set in the bios to make the voltage value more efficient and accurate rather than reading from wattman at a higher setting.
@boysie@Heliox What's the latest version of the low power dual miner bios to achive 29 or 30 mh/s?
I've noticed in another thread you guys talked about the -offset to be set in the bios to make the voltage value more efficient and accurate rather than reading from wattman at a higher setting.
Check my post above, that's my rom with VDDC and VDDCI offsets added.
@boysie@Heliox What's the latest version of the low power dual miner bios to achive 29 or 30 mh/s?
I've noticed in another thread you guys talked about the -offset to be set in the bios to make the voltage value more efficient and accurate rather than reading from wattman at a higher setting.
Check my post above, that's my rom with VDDC and VDDCI offsets added.
Greetings
I wonder if I can get any more out of these cards, dual mining with claymore.
Couple questions if someone could help: This is only possible for reference cards for some reason? Anything like this exists for non-reference ones?
each card has its own bios. all reference cards are the same so they use one bios (rx480 8gb). any different card needs other bios
That's not completely true.
And can everyone please stop using the phrase: Memory Voltage
To clarifiy this again. There is no such thing as memory voltage on Polaris.
It's VDDCI/AUX, the I/O bus voltage (between memory and GPU core).
On Fiji there is MVDDC (Pure Memory Voltage).
So those stories about lowering "memory voltage" has no effect at all, basically if you lower the voltage part under memory in polaris editor you are doing nothing. It has no effect.
It has effect when you mod it into the rom like i've recently done. (screenshot) (yes, i will release something new later this week)
Greetings
Is there any app which can read current vddci? And increasing does it add something to the stabillity of the mem ?
Is there any app which can read current vddci? And increasing does it add something to the stabillity of the mem ?
Watttool.
Which one is VDDCi? it should be VID i guess? When i set mem and core voltae to 1100 and then set -50 vddc offset, VOut and vddc are showing 1050 and VID is showing 1100. Is that right?
I discovered while struggling with gigabyte 470, that the only proper way to set up offset in WattTool is to set the VDDC and VDDCI to the same value and add a negative offset. The reason is that there are situations when the GPU is at higher DRM state and MEM is still in DRM0, and therefore the voltage would be too low for the GPU and it just hangs. So you have to keep the VDDC independent from the memory DRM state, so you must set VDDC and VDDCI the same value and give a negative offset that brings down the VDDC.
So for example my GB 470 4GB I use 1150 VDDC/VDDCI and -200mV offset. This gives 1150mV VDDCI and 950mV VDDC
I discovered while struggling with gigabyte 470, that the only proper way to set up offset in WattTool is to set the VDDC and VDDCI to the same value and add a negative offset. The reason is that there are situations when the GPU is at higher DRM state and MEM is still in DRM0, and therefore the voltage would be too low for the GPU and it just hangs. So you have to keep the VDDC independent from the memory DRM state, so you must set VDDC and VDDCI the same value and give a negative offset that brings down the VDDC.
So for example my GB 470 4GB I use 1150 VDDC/VDDCI and -200mV offset. This gives 1150mV VDDCI and 950mV VDDC
And can you clock the mem better then if you set vddci 1000 and vddc 1150? Because i thought the same as you but when i tried the max mem stable clock was exactly the same...
It seems it differs from brand to brand. Gigabyte is definitely more stable at higher VDDCI. At 950mV max mem clock is 1850, and at 1150mV it is stable at 1950. That implicates that there is a tighter connection between MVDD and VDDCI on that card...?
guys need some advice, im making a 2nd rig, and im new to this bios modding stuff, so im looking for a card with dual bios, according to what i had read here the 470 nitro and 480 nitro are both good options right?
I can find the 470 4 gb nitro for 217$ and the 480 4 gb nitro for 229$ which should i choose?
Comments
Please please please a million times share your rom
memory voltage to 890. Am i ok? Using low-pwr-29MH-Boysie.rom
2)core 1095 mem 2080 both at 880?
the above will keep 29mhash 67watt ?
the above with low-pwr-29MH-Boysie.rom using wattman?
Couple questions if someone could help:
This is only possible for reference cards for some reason?
Anything like this exists for non-reference ones?
I am not sure about buying reference cards, they have a bit lower resale value.
Also I cant find any 4GB refs in my country, and 8GB are more expensive than non-reference 4GB
And can everyone please stop using the phrase: Memory Voltage
To clarifiy this again.
There is no such thing as memory voltage on Polaris.
It's VDDCI/AUX, the I/O bus voltage (between memory and GPU core).
On Fiji there is MVDDC (Pure Memory Voltage).
So those stories about lowering "memory voltage" has no effect at all, basically if you lower the voltage part under memory in polaris editor you are doing nothing. It has no effect.
It has effect when you mod it into the rom like i've recently done. (screenshot)
(yes, i will release something new later this week)
Greetings
I've noticed in another thread you guys talked about the -offset to be set in the bios to make the voltage value more efficient and accurate rather than reading from wattman at a higher setting.
Check my post above, that's my rom with VDDC and VDDCI offsets added.
Greetings
I wonder if I can get any more out of these cards, dual mining with claymore.
mem voltage set to 816.
The reason is that there are situations when the GPU is at higher DRM state and MEM is still in DRM0, and therefore the voltage would be too low for the GPU and it just hangs.
So you have to keep the VDDC independent from the memory DRM state, so you must set VDDC and VDDCI the same value and give a negative offset that brings down the VDDC.
So for example my GB 470 4GB I use 1150 VDDC/VDDCI and -200mV offset. This gives 1150mV VDDCI and 950mV VDDC
Gigabyte is definitely more stable at higher VDDCI. At 950mV max mem clock is 1850, and at 1150mV it is stable at 1950.
That implicates that there is a tighter connection between MVDD and VDDCI on that card...?
I've updated my drivers and the atikmdag.sys is no longer in the .\sys32\drivers folder... well I am not prompted to overwrite the file.
I can find the 470 4 gb nitro for 217$ and the 480 4 gb nitro for 229$ which should i choose?
I have a feeling that 16.9.2 didn't install correctly though