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Can anyone share the best config to mine CN Heavy for RX Vega 56??
Thanks

you can try below config with driver 18.6.1.

{ "mode" : "GPU", "worksize" : 16, "alpha" : 64, "beta" : 16, "gamma" : 4, "delta" : 4, "epsilon" : 4, "zeta":4, "index" : 0, "multi_hash":992 },
{ "mode" : "GPU", "worksize" : 16, "alpha" : 64, "beta" : 16, "gamma" : 4, "delta" : 4, "epsilon" : 4, "zeta":4, "index" : 0, "multi_hash":992 },

Thank you... Can you also share for Bittube?? Really appreciate...

This is mine for a ref 64 + 56 (flashed to 64), using latest miner (32q) and latest driver (18.9.3). Getting ~2200 + 2150:

"gpu_threads_conf" :
[
{ "mode" : "GPU", "worksize" : 16, "alpha" : 128, "beta" : 16, "index" : 3, "multi_hash":1968 },
{ "mode" : "GPU", "worksize" : 16, "alpha" : 128, "beta" : 16, "index" : 3, "multi_hash":1968 },
{ "mode" : "GPU", "worksize" : 16, "alpha" : 128, "beta" : 16, "index" : 4, "multi_hash":1968 },
{ "mode" : "GPU", "worksize" : 16, "alpha" : 128, "beta" : 16, "index" : 4, "multi_hash":1968 },
],

Can you show your core/mem? 1408/1100?

1525/1145 @ 905 for the 64, 1500/1145 @ 915 for the 56.

Haven't optimized them yet for this miner - these are settings from stak / cast, and i feel like they can do better now, at least maybe lower power.

EDIT: sorry, just realized OP asked for bittube (saber)... these are for cn7