Hello, I'm just getting into Ethereum mining, and I have a few questions about my hash rate. For whatever reason, on all my cards, I'm getting 5MH/S less than what I expect to be getting (R9 295x2 is getting 55MH/S) and I was wondering how to get it to the hash rate I'm expecting. I'm currently running a 295x2 and a R9 290X (Waiting for higher wattage power supply for my other three cards) I'm mining with Genoli-Ethminer, on Windows 7x64 Ultimate. My build has 4GB of DDR3 ram, and a Intel Celeron processor. It's currently being powered by 2 1000W modular power supplies, and the temperatures are 59C for the 295x2 and 68C for the R9 290X.
Is there something I'm missing or doing wrong? I see other people on my mining pool with the same cards as I have, but they are getting the full hashrate (30MH/S for the R9 290) If anyone has any ideas, please let me know. As far as stability goes, I'm only mining with two physical cards because when I had an extra card on it (R9 290) it would crash/freeze every half an hour (Low power/inefficiency on psu. I've been mining for a little over 24 hours straight (took me some time to figure out that that extra card was causing the crashes)
Thanks for reading, and I hope someone can help me.
----EDIT----
Forgot to mention I've tried both catalyst 15.7.1, and 2 different versions of Crimson. Maybe QTMiner is better, but when I tried to use it (when I had the extra card in) I don't think I got any shares because I don't know what it says if I get a share. It told me the hashrate in H/S instead of MH/S, so it was a bit harder to figure out which was better to use.
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That said, I have almost all 290s and depending on their clocks (whether and how much I overclock them) they are all getting between 28 and 31.
I am using EthOS (linux based mining platform) because I found windows to just be a pain in the butt generally, I think EthOS uses a version of Genoil's miner, and now (I think) it uses an instance of the miner for every card on the rig.
I'm pretty sure that trying to run a windows based mining rig with only 4GB RAM on the motherboard will be problematic. I have a friend who runs windows rigs and says that he needs more RAM the more cards he has on his rig. He uses claymore now but he used to use Genoil and run one instance of Genoil for each card, and he told me that it worked better when he added RAM. Maybe when you add that third card, it isn't the PSU - but windows having a tantrum because it runs out of RAM? 2 x 1000w PSUs should be plenty, even with that crazy dual GPU card. One of my rigs is 4 x 290s, and three of them are overclocked to core 1100, and they are on 2 x 750w PSUs. Been fine for months. I have another rig which is 4 x 290s and 1 x 380 and it's using one 1000w PSU and one 850w PSU and the PSUs aren't even getting warm.
Just from using windows generally as a desktop system, it has seemed to me to have always been a RAM hog because it has so much extra crap going on in the background in case you need it, rather than just running what you actually tell it to like Linux does, but I use it when I have to do things in the world apart from mining, because it's so ubiquitous. For mining I don't like it - just my opinion.
Ive used modified bios here:
http://www.overclock.net/t/1564219/modded-r9-390x-bios-for-r9-290-290x-updated-02-16-2016
for my 290x and it had some improvement but not the expected 28 - 30 Mh/s
use 15.12 catalyst first, http://www.guru3d.com/files-details/amd-radeon-software-crimson-15-12-driver-download.html
edit your config.txt to
-epool eu1.ethermine.org:4444
-ewal yourwallet address
-epsw password
#-dpool sia.suprnova.cc:7777
#-dwal user.worker
#-dpsw password
-esm 0
-mode 0
-tt 60
#-dcoin sia
-tstop 95
#-dcri 30
if you want dualmining, remove the # from each line.
finally make a bat in the same folder with these lines
setx GPU_FORCE_64BIT_PTR 0
setx GPU_MAX_HEAP_SIZE 100
setx GPU_USE_SYNC_OBJECTS 1
setx GPU_MAX_ALLOC_PERCENT 100
setx GPU_SINGLE_ALLOC_PERCENT 100
EthDcrMiner64.exe
ethminer -G -F http://ethereumpool.co/[email protected](My address removed for safety)@Minerx1 --opencl-platform 1
and remove ewal and epsw or put # to ignore it.
setx GPU_FORCE_64BIT_PTR 0
setx GPU_MAX_HEAP_SIZE 100
setx GPU_USE_SYNC_OBJECTS 1
setx GPU_MAX_ALLOC_PERCENT 100
setx GPU_SINGLE_ALLOC_PERCENT 100
EthDcrMiner64.exe
This is the log file that gets generated when it crashes. 11:39:52:263 ecc args: -epool http://ethereumpool.co/[email protected]@Minerx1 -esm 0 -mode 1 -tt 1 -tstop 95
11:39:52:263 ecc
11:39:52:263 ecc ÉÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍ»
11:39:52:263 ecc º Claymore's Dual ETH + DCR/SC GPU Miner v6.0 Beta º
11:39:52:263 ecc ÈÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍͼ
11:39:52:263 ecc
11:39:52:466 ecc ETH: No pools specified! Specify at least one valid pool in "-epool" parameter.
---- Extra information ----
I uninstalled the existing display drivers, then used DDU to preform a clean uninstall of my drivers in safe mode after I used the built in uninstaller. I rebooted, and installed the version claymore miner says to use (15.12) and I rebooted.