Quote from: PharmEcis on July 01, 2019, 01:00:39 PM

Hey hey hey good to see some of us are still at it and made it through this very very short winter... (still don't believe we are totally out of it yet!)

My R815's have been idle for months since Swap forked from CN Superfast to C29s except for a short period for Wownero's fork a few weeks ago where I was slaughtering solo blocks for two days.

Mine have been idle except for updating Ubuntu and for Testing RandomX.

Quote from: PharmEcis

My Proliant boxes have been hosting GPUs but not CPU mining. I've been slowly moving to smaller less dense rigs and I'm also moving into FPGA's.

I almost got rid of all my GPUs but my electric is cheap (avg'd 6.7c per KWh last month). I've been moving towards FPGAs since last year. Hasn't worked out exactly as hoped but still have faith.

I plan to sell off the seven HP DL580 G7's and the GTX 750's I have. As you mentioned the HP DL580 G7 in a 4U case is pretty dense and the Dell R815's in a 2U case produce more RandomX H/s than the HP DL580 G7 at lower power.

WOW your electric rate of 6.7c per KWh is fantastic. My two year plan just expired June 19th and it was down to 6.8c per KWh in June. Previous months were 6.9c, 6.9, 6.9 and 7.5c per KWh. It looks like OnCore rates have been dropping which was the reason for the drops. That said I had to renew and the best plan I found was 22% higher at 8.3c per KWh. It is a three year plan so I am locked to that until June 2022. A bunch of plans I rejected had rates for over 2000 KWh per month jumping to 14c (or more) per KWh. Those plans would be a killer for mining.

Quote from: PharmEcis

I am ready to turn these guys on for the XMR fork, but as you stated, profit is yet to be seen.

October can't get here fast enough.

In the mean time I am upgrading the five Dell R815's that I have with Opteron's that are faster and/or have more cores so that those servers produce even higher RandomX H/s.

Three of my R815's have quad Opteron 6238's and the other two have quad Opteron 6234's.

I managed to pick up:

4x 16-core Opteron 6378's for total of $69.29
http://www.cpu-world.com/CPUs/Bulldozer/AMD-Opteron%206378%20-%20OS6378WKTGGHK.html

These are only 100 MHz slower than the Opteron 6380's that you have in your R815's. The Opteron 6378 will be about 3.6% slower.

http://www.cpu-world.com/CPUs/Bulldozer/AMD-Opteron%206380%20-%20OS6380WKTGGHK.html

I also picked up:
10x 12-core Opteron 6348's for total of $64.10

http://www.cpu-world.com/CPUs/Bulldozer/AMD-Opteron%206348%20-%20OS6348WKTCGHK.html

and

2x 16-core Opteron 6276's for total of $17.71

http://www.cpu-world.com/CPUs/Bulldozer/AMD-Opteron%206276.html

I have a Dual Opteron Supermicro Server that currently has 2x Opteron 6348's in it.

I plan to replace the two 12-core Opteron 6348's with the two newly purchased 16-core Opteron 6276's.
That system should be 11.8% faster with those changes.

The two current R815's that have quad 12-core Opteron 6234's will be upgraded to quad 12-core Opteron 6348's
Those systems should be 14.8% faster with those changes.

The other four 12-core Opteron 6348's will be used in a new purchase of an R815.

Quote from: PharmEcis

We might have periods of profitability but it's time to scrap these hunks of junk.

With the upcoming Monero Fork to RandomX I don't believe that the Dell R815's are junk because GPU mining will be futile and CPU mining will rain supreme for RandomX.

Take a look at these RandomX GPU RandomX H/s results
https://github.com/SChernykh/RandomX_CUDA

A single Opteron 6238 produces 2356 H/s where as a Titan V only produces 2199 H/s.
And a single Opteron 6348 produces 2653 H/s where as a Tesla V100 only produces 2524 H/s.

AMD GPU mining of RandomX is even worse. A Vega 64 can only get 1200 H/s on RandomX.