Re: AMD Mem Tweak XL - Read/modify timings/pp/straps on the fly
Hello guys, your help would be aprreciated 
I have few vegas64 reference samsung memory on me (gigabyte, powercolor, amd) and unfortunately have a hard time setting them to be as efficient as they could
First I tried amdmemtweak with hiveos but couldn't get the results I wanted not even close, still was about 250w from wall (in this post all wattage will be from wall), so I switched to windows 10 and started getting more interesting results as I went through almost every page in this thread (thanks for sharing your settings btw)
Bassicaly I'm aiming on low power consumption because my electricity isn't that cheap here - 0.16$/kwh
These are my best results
--CL 20 --RAS 30 --RCDRD 14 --RCDWR 6 --RC 44 --RP 12 --REF 11700 --TRFC 260
https://imgur.com/a/bPlLOdi
- I was getting 47.2 mhs, 175w draw, after 3 min it always drops to 46mhs but it's stable
I wanted to get lower with power consumption as I found out one guy in our local forum posted he is getting 42mhs with around 100w power draw on his vegas 56, so I flashed one of my vega64 to 56 bios and applied the exact setting as he did, the hashrate was exactly the same around 42mhs but i got only to 165w
Here you can see the settings
https://imgur.com/a/M81meD4
I can see some users getting very nice results with 50mhs+ and low power unfortunately the discussion ended
Settings in pic run ~168w/GPU including idle ATW (120v, 1600 plat PSU). amdmemtweak params are --RAS 30 --RCDRD 14 --RCDWR 6 --RC 44 --RP 12 --REF 11700 --RRDL 4
https://i.imgur.com/gtxGhf7m.png
Thanks mate ill give them a run. im on windows though and dont think i can get voltages down that low without powerplay tables? think its capped at 900mv.
You can use ODNT to easily create a PPT similar to my clocks/voltages listed on the right. Only difference is that you may need to use mem P2 set to 1028 (and lock out P3), in order to take advantage of the power savings of a reduced SOC clock.
Btw, if you really want to get crazy, there's been a lot of noise about flashing a 64 w/ a 56 BIOS (yes, the reverse of what most people have been doing) to get higher hashrates at lower power. Not sure which models this actually works for tho, and haven't tried it myself... yet.
i'm getting 54Mh (samsung) and 50MH (hynix). 930W on the wall for 6 vegas (all flashed 56). 900W on the wall, plat PSU.
I will study more and want to play with core and mem control more but I dont understand it fully yet and always when I change it, it lowers hashrate and draws more power
, I saw some users setting OD_SOCLK and also values for OD_SCLK, OD_RANGE under linux, I also downloaded ODNT but can't see these settings there also when I apply first amdmemtweak then odnt the miner just won't start (im using TRM) ... Could somebody please share their low power cons setting for vega 56/64 or advice me which values shoud I try tweaking , thank you very much
I have few vegas64 reference samsung memory on me (gigabyte, powercolor, amd) and unfortunately have a hard time setting them to be as efficient as they could
First I tried amdmemtweak with hiveos but couldn't get the results I wanted not even close, still was about 250w from wall (in this post all wattage will be from wall), so I switched to windows 10 and started getting more interesting results as I went through almost every page in this thread (thanks for sharing your settings btw)
Bassicaly I'm aiming on low power consumption because my electricity isn't that cheap here - 0.16$/kwh
These are my best results
--CL 20 --RAS 30 --RCDRD 14 --RCDWR 6 --RC 44 --RP 12 --REF 11700 --TRFC 260
https://imgur.com/a/bPlLOdi
- I was getting 47.2 mhs, 175w draw, after 3 min it always drops to 46mhs but it's stable
I wanted to get lower with power consumption as I found out one guy in our local forum posted he is getting 42mhs with around 100w power draw on his vegas 56, so I flashed one of my vega64 to 56 bios and applied the exact setting as he did, the hashrate was exactly the same around 42mhs but i got only to 165w
Here you can see the settings
https://imgur.com/a/M81meD4
I can see some users getting very nice results with 50mhs+ and low power unfortunately the discussion ended
would someone please be able to help me out with some vega 64 timings and clocks and maybe ppt tables to get power usage below 200W at wall? been getting 48mh @200w from wall from each card, i imagine i can do better.
Settings in pic run ~168w/GPU including idle ATW (120v, 1600 plat PSU). amdmemtweak params are --RAS 30 --RCDRD 14 --RCDWR 6 --RC 44 --RP 12 --REF 11700 --RRDL 4
https://i.imgur.com/gtxGhf7m.png
Thanks mate ill give them a run. im on windows though and dont think i can get voltages down that low without powerplay tables? think its capped at 900mv.
You can use ODNT to easily create a PPT similar to my clocks/voltages listed on the right. Only difference is that you may need to use mem P2 set to 1028 (and lock out P3), in order to take advantage of the power savings of a reduced SOC clock.
Btw, if you really want to get crazy, there's been a lot of noise about flashing a 64 w/ a 56 BIOS (yes, the reverse of what most people have been doing) to get higher hashrates at lower power. Not sure which models this actually works for tho, and haven't tried it myself... yet.
i'm getting 54Mh (samsung) and 50MH (hynix). 930W on the wall for 6 vegas (all flashed 56). 900W on the wall, plat PSU.
I will study more and want to play with core and mem control more but I dont understand it fully yet and always when I change it, it lowers hashrate and draws more power
, I saw some users setting OD_SOCLK and also values for OD_SCLK, OD_RANGE under linux, I also downloaded ODNT but can't see these settings there also when I apply first amdmemtweak then odnt the miner just won't start (im using TRM) ... Could somebody please share their low power cons setting for vega 56/64 or advice me which values shoud I try tweaking , thank you very much