To my knowledge X11 and X13 jump around in profitability, one day X11 is better the next X13 so really just pick one and in the long run the results would probably have been the same.

There are a few pools now that use sgminer 5 which can automatically change algorithm for you to the most profitable but you should probably try and get them working efficiently before thinking about that.


You might be getting slightly confused about hash rates for x13 8mhs would only be possible with a very hefty overclock.
For my 280x's (same as 7970) with around 1100 Core clock (slight undervolt) and low memory clock i get ~3mhs each so you would be looking at more like 6-7mhs depending on how high you clock them.

Also i will offer some advice that if performance per watt matters (you said not for you) i found increasing memory clock does improve hashrate but it's not normally worth the extra power/heat.

I actually found x11/x13 mining much easier to set-up than scrypt mining, there is no voodoo of getting the right clock speed/and Thread concurrency. It just worked on pretty much the default settings and any increase's in clock or memory clock are linear improvements in hashrate.


My sgminer 5 .bat for my 3 card rig:

sgminer --auto-fan --temp-target 66 -g 4 -w 64 -X 256 --gpu-engine 1063,1119,1113 --hamsi-expand-big 1 --algorithm marucoin-mod

only running at 800 Mem clock right now mainly due to it being Hot atm and that it is better Hash per watt.

Really crashes, HW ect probably just means your clocks are too high, just try lowering your core clock abit more and it will probably be ok :X

(you have the right miner) ( https://bitcointalk.org/index.php?topic=658975.msg7412560#msg7412560 )

Delete the Bin files.

Edit the 280x bat config file.

For x11. try something like:

sgminer.exe -o --pool-algorithm darkcoin-mod -u -p -I 17 -g 4 -w 64

Important to use 14.6 drivers.

a 7970 should manage these clock settings:

sgminer.exe -o --pool-algorithm darkcoin-mod -u -p -I 17 -g 4 -w 64 --gpu-memclock 1500 --gpu-engine 1100

With this setting I get 4465 khash on a MSI twinforce 280x, and above 4100 on a sappshire 7970

You can also try to add -i to 18 or 19.

What's your OS? Which algorithm do you want to mine? Your link mentiones X11 not X13.

My rig with Xubuntu 13.10 64bit, Catalyst 14.6 Beta, SGMiner 5, 8 GB Ram:
R9 290 Scrypt = 905 kHs, 350 Watt
R9 290 X11 = 4600 kHs, 220 Watt
R9 290 X13 = 3500 kHs, 225 Watt
R9 290 X15 = 3000 kHs, 225 Watt

Download catalyst 14.6 beta

Download the sgminer binaries at:

http://cryptomining-blog.com/3085-updated-windows-binary-for-the-new-sgminer-5-0-beta-miner-software

Experiment with settings.

A 7990 should do around 8mhash in x13 mining. The 7950 above 3mhash .


https://www.nicehash.com is currently paying :

X13    1.1212 BTC/GH/Day

Your rigs should do around 100mhashes per day in x13(when configured correctly) with 50% power usage compared to scrypt mining.

You earn 0.1212 Btc /day