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.