When setting GPU Core and Memory voltage is it considered Max voltage or Exact

[dipepmining]

Thank you for the response Lunga Chung!

When you set your core voltage to 837 do you set the same voltage for memory as well or keep it at 850?

Also, maybe I will try Phoenix Miner, it wouldn't hurt.

[Lunga Chung]

Thank you for the response Lunga Chung!

When you set your core voltage to 837 do you set the same voltage for memory as well or keep it at 850?

Also, maybe I will try Phoenix Miner, it wouldn't hurt.

Usually yes, previous statement from certain members that memory mV doesn't affect the consumption is simply wrong...

[dipepmining]

Lunga Chung:  I apologize, but can you link me to the appropriate version of the AMD Memtweak tool. I was planning on using this one for AMDMemoryTweakXL which appears to be the latest, but it is in beta: https://github.com/Eliovp/AMDMemoryTweakXL/releases/tag/1.1.0.0

I am going to assume there aren't many specific config settings I will need, most of the config settings look just like the Claymore settings. I will look through the Readme and add anything I feel necessary.

The only thing that has me confused is the AMT.

Does the AMD Memtweak tool do the equivalent of what -rxboost does with Claymore? Adjust the memory timings/straps on the fly?
Does it replace the memory timings/straps that are set using the Polaris Bios Mod Editor on the fly? If so is modded bios even necessary for RX580 should I revert back to stock?

I will download and run with:
AMT with --REF 90

as you said.

Is this something that I run one time prior to starting phoenix miner or does it stay running with phoenix miner?

[Lunga Chung]

Lunga Chung:  I apologize, but can you link me to the appropriate version of the AMD Memtweak tool. I was planning on using this one for AMDMemoryTweakXL which appears to be the latest, but it is in beta: https://github.com/Eliovp/AMDMemoryTweakXL/releases/tag/1.1.0.0

I am going to assume there aren't many specific config settings I will need, most of the config settings look just like the Claymore settings. I will look through the Readme and add anything I feel necessary.

The only thing that has me confused is the AMT.

Does the AMD Memtweak tool do the equivalent of what -rxboost does with Claymore? Adjust the memory timings/straps on the fly?
Does it replace the memory timings/straps that are set using the Polaris Bios Mod Editor on the fly? If so is modded bios even necessary for RX580 should I revert back to stock?

I will download and run with:
AMT with --REF 90

as you said.

Is this something that I run one time prior to starting phoenix miner or does it stay running with phoenix miner?

The latest version is just fine, this is a GUI version (look at the repository on Github you can find the latest CL version but its the same)

On GUI version REF option is at the bottom left corner


This tool can be used as overdriventool for OC.

I prefer to do the OC with OVDNT and then apply REF option in AMT before starting the miner

Yes, rxboost and AMT ref option are the same (phoenix doesn't have rxboost) but the AMT allows much more customization but for now don't touch them  only change REF
Originally this tool was designed for strap changing on the fly (Claymore implemented this in to his miner)

[Metroid]

Metroid: Should I always keep gpu core voltage inline with memory voltage?

For example if I set GPU Core voltage to 844 and it works should memory voltage be 844 as well or keep it at 850?

Additionally, if memory at 2200 / 850 works for some of the cards without any warning messages or mem errors since they are all Micron would you suggest I keep it at that or was 2150 / 850 better?

One more thing... Here are the results when running at the following settings:

When I run:

1150 / 844
2200 / 850
I am getting 253mh/s steady (at slightly lower wattage than when using 850 which is great)

When I run:

1150 / 844
2150 / 850
I am getting 252mh/s steady (at slightly lower wattage than when using 850 which is great, but not sure if it is worth the 3mh/s sacrifice, will need to check whattomine)

When I run:

1160 / 844 (this is probably a bad idea)
2150 / 850
I am getting 253/4mh/s steady

When I run:

1170 / 850 (not sure if this will work at 844, is it worth trying, I am nervous)
2150 / 850
I am getting 255mh/s steady (I still think these are my most solid settings, even the PC restarts faster with them, if that is a thing)

When I run:

1180 / 850
2200 / 850
I am getting 258mh/s steady (but at the cost of higher wattage and risk of a gpu mh/s dropping to 0.000 crashing due to not enough voltage)

I am almost positive without a higher core set, the 2200 can't take full advantage based on the results above.
----------

PLEASE let me know your thoughts on finding the sweetspot based on the above tests if you dont mind. (taking into account that my electricity costs are .1333, which I think is on the high end)

SIDE NOTE: After increasing minfan speed to 50% the gpus all run a lot cooler and GPU 2 that was having problems is accepting shares, even at 2200 / 850 memory. Is this actually a thing or am I most likely going to get warnings again resulting in me to go back to 2140 / 850?

850v 2150 would be okay, memory voltage is irrelevant, but some software take memory voltage as core voltage, claymore is one of them. Like Lunga chung said, you could try lower voltage and that is better, if it crashes then rises the value again. Do not run memory at 2200mhz. That is too much.

[dipepmining]

Lunga Chung: One other question I had about AMT.

Do I still keep my cards with the modded timings from Polaris?

I've seen some YouTube Videos that say you can restore the cards original vbios since AMT takes care of on the fly memory timings / straps... I suppose this is a manual effort though right? So I probably should just keep my modded vbios.

UPDATE:
I kept my cards with the timings from Polaris one click and set the REF setting to 90 like you said and let it rip!!

Total mh/s is between 257-258 which is 2 more than Claymore!!!

It is rare, but early on in the command line I was seeing blue gpu lines with a really low mh/s because one to three cards were at 0.000 mh/s, but then they recovered.... Is this something that will keep happening? I haven't seen it happen since, but have only been monitoring for 10 minutes. If it does keep happening, do I leave it as is or would you recommend I feed these cards an extra mV?

I am currently running:
1170 / 850
2150 / 850

I am thinking upping to 2200 with Phoenix Miner will make a difference and possibly take me up another 2 mh/s, unlike with Claymore.

[Lunga Chung]

Lunga Chung: One other question I had about AMT.

Do I still keep my cards with the modded timings from Polaris?

I've seen some YouTube Videos that say you can restore the cards original vbios since AMT takes care of on the fly memory timings / straps... I suppose this is a manual effort though right? So I probably should just keep my modded vbios.

UPDATE:
I kept my cards with the timings from Polaris one click and set the REF setting to 90 like you said and let it rip!!

Total mh/s is between 257-258 which is 2 more than Claymore!!!

It is rare, but early on in the command line I was seeing blue gpu lines with a really low mh/s because one to three cards were at 0.000 mh/s, but then they recovered.... Is this something that will keep happening? I haven't seen it happen since, but have only been monitoring for 10 minutes. If it does keep happening, do I leave it as is or would you recommend I feed these cards an extra mV?

I am currently running:
1170 / 850
2150 / 850

I am thinking upping to 2200 with Phoenix Miner will make a difference and possibly take me up another 2 mh/s, unlike with Claymore.

Do it in increments of 5 regarding memory, same goes for core. Keep the voltage same (1175/2155/850).
1180 for core should be sweet spot if you cards can handle on 850mV (most of them should) like Metroid said don't push them all the way up to 2200 (you will gain very little if it even works)
Also don't know in what environment you placed your rig but try to keep it @ 60C

As for the timing the PBE has a decent timing for Micron no need to use straps on the fly, but you can play with other settings in AMT but before that I highly recommend to read couple of threads here regarding  GDDR5 memory (seriously don't change the value in AMT unless you know what you are doing cause you can brick your cards!)