Quote from: Ledipaa on October 24, 2017, 10:00:26 PM

Quote from: oskar_n8 on October 24, 2017, 08:53:57 PM

Quote from: Ledipaa on October 24, 2017, 08:44:26 PM

Quote from: oskar_n8 on October 24, 2017, 07:38:23 PM

Today I got my first VEGA 56.

The hashrate is max at 1940H/s but frequently it drops down to 1870H/s and then rises to 1940H/s back and so on.
Average hashrate (15min) is 1915H/s.

I am just wondering, because my Vega 64s with the same setup/mod have quite stable hasrates around 1980H/s +/-3H/s

This my setup: Vega 56 with Vega64LC bios to 1408/1100@905mV (regmod) and August 23th blochchain drivers
"gpu_threads_conf" : [
{ "index" : 0, "intensity" : 2016, "worksize" : 8, "affine_to_cpu" : false },
{ "index" : 0, "intensity" : 1736, "worksize" : 8, "affine_to_cpu" : false },
],

Any ideas?

Thanks and cheers

Seems like a normal difference between 56 and 64(~3%)? Considering theres over 10% more shader cores on 64, 56s with 64s bios do well.

Maybe your 56 cant handle 1100hbm? I have 2 64s, 1100 and other is 1065 hbm capable.

You are right, Vega 56 is slower than Vega 64.
But this is not what I am complaining about.

I am complaining about, that the Vega 56 is going up and down in hashrate: between 1870 and 1940H/s.

And I repeat, its not carved in stone every vega can do even 1100mhz hbm Wink

Cool it down or lower the clocks like suggested.

Temps are okay around below 60°C.
I testet lower frequencys for GPU and HBM2.
Even I flashed back stock V56 bios... (hashrate is between 1060H/s 990H/s)
-> Same behavior :-/