Topic: AMD Mem Tweak XL - Read/modify timings/pp/straps on the fly - page 6. (Read 58892 times)

Forgot to mention that you will need to use TeamRedMiner to get the 54.5Mh/s

Vega64 flashed with Vega56 bios

using theses timings
--CL 20 --RAS 26 --RCDRD 12 --RCDWR 12 --RC 38 --RP 12 --RRDS 3 --RRDL 5 --RTP 6 --FAW 12 --CWL 8 --WTRS 4 --WTRL 9 --WR 13 --REF 24000 --RFC 239

Core 1097Mhz / 825mV
Mem 1028Mhz

you can get 54.5Mh/s solid ethereum hashrate at 115w to 130w depending on your model!

using Vega 64 flashed to 56

with  --CL 20 --RAS 30 --RCDRD 14 --RCDWR 12 --RC 44 --RP 14 --RRDS 3 --RRDL 6 --RTP 5 --FAW 12 --CWL 8 --WTRS 4 --WTRL 9 --WR 14 --REF 17000 --RFC 249

Core: 1028
VDD 840
MVDD 800
Mem 1028

i'm getting 47.340 MH/s 114w (on phoenix miner) 54C Mem:75C (average based on 4xGPU)

wonder if that's possible to get even better...

for people interested in the flash I used amdvbflash (the same one i used for rx 5700 xt flash) with the equivalent model to my vega 64 (Nitro+) on https://www.techpowerup.com/vgabios/?architecture=&manufacturer=&model=RX+Vega+56&interface=&memType=&memSize=&since=

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

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

Vega 64 Samsung
---------------
In short, try the following for a 50-51 MH/s setup:

1) Set clocks to core clk 1075 MHz, mem clk 1107 MHz, voltage at 850
   mV. Your card may need to clock down the mem clk to 1050-1080 MHz
   to be stable with no hw errs.

2) Use the following modded timings:

   --CL 20 --RAS 30 --RCDRD 14 --RCDWR 12 --RC 44 --RP 14 --RRDS 3
   --RRDL 6 --RTP 5 --FAW 12 --CWL 8 --WTRS 4 --WTRL 9 --WR 14
   --REF 17000 --RFC 249

3) Hopefully it runs stable and you should observe a hashrate around
   50.5-50.9 MH/s. If your GPU can't handle the timings, you need to
   relax them to less aggressive variants available in the AMD mem
   tweak thread on Bitcointalk, or come join the TRM discord for
   further suggestions.

4) For better efficiency (but lower hashrate), tune down your core clk
   and try to further lower voltage while remaining stable.

5) We reiterate: _blast_ your fans and monitor your HBM temperature.