Desperately need advice on putting 7990's to best use.

[cryptod00d]

I have 10 XFX 7990's and 6 Sapphire 7950's that I've been using on middlecoin for the last 7 months. Profits have turned to absolute crap and I really should have been looking for alternatives a long time ago. I'm just now starting to read up about scrypt-n, x11, x13, x15... but the information is really conflicting and confusing so far. I really need someone who is knowledgeable on the subject to point me in the right direction/give me some insight. Something important to note is that I do not have to pay for power, but I have 6 separate rigs in one 125sqft room, so heat could be somewhat of a factor. I currently have all of my cards undervolted for heat management.

[forevernoob]

Since you have free power why don't you just try diffrent coins and see what gives you the best profit?

Have you tried any primecoin based coins?

[sp_]

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

[onetwentyfive]

I have 10 XFX 7990's and 6 Sapphire 7950's that I've been using on middlecoin for the last 7 months. Profits have turned to absolute crap and I really should have been looking for alternatives a long time ago. I'm just now starting to read up about scrypt-n, x11, x13, x15... but the information is really conflicting and confusing so far. I really need someone who is knowledgeable on the subject to point me in the right direction/give me some insight. Something important to note is that I do not have to pay for power, but I have 6 separate rigs in one 125sqft room, so heat could be somewhat of a factor. I currently have all of my cards undervolted for heat management.

Good morning! In my opinion, one of the only things worth mining both in terms of immediate profit or long term holding profit is Monero. It can be tricky to set up, PM me if you're interested. I'll help ya out.

I have 4 gpu's: 2-270x and 2-7970 and also use my cpu (i7-4820k) and I get about 2kh/s. If I just dumped that every day at current prices I'd get about .01btc/day.. that's like what I was making when I started mining 6 months ago. Equivalently I was making .004-6 a day bouncing between x11 and x13 coins when I finally gave up and realized they were all losers (except FRAC). Heh, I still like FRAC.

https://poloniex.com/exchange/btc_xmr

https://bitcointalk.org/index.php?topic=583449.0

I'm feeling friendly this morning! 

[OptimusPrime7]

Since you have free energy, mining scrypt can be profitable for you also but if you want more then go for x13. www.coinking.io, they have the program and instruction there.

[superresistant]

https://bitcointalk.org/index.php?topic=632595.msg7873844#msg7873844

http://ducknote.crypto-pool.fr/

50% reward bonus for 100 blocks.

Use Claymore GPU miner :
https://bitcointalk.org/index.php?topic=638915.0

setx GPU_MAX_ALLOC_PERCENT 100
C:\path_to_miner\NsGpuCNMiner.exe -o stratum+tcp://xdn.crypto-pool.fr:6666 -u your_ducknote_address -p x

[Fioravante]

Maybe you should lease your rigs on for example betarigs. Earnings will be much higher than on any multipool.

[cryptod00d]

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

I've been trying to get x13 working all day and I'm very frustrated. When I'm not getting restarts, the GPU is either sick or full of HW errors and no submits. I've been googling a ton of different configs but none seem to work. I've tried so many different combos it's ridiculous. Different catalyst drivers/combos. I haven't even started on the 7950's yet. Still haven't been to bed yet... up all night doing this. Any ideas what's going on? Or of a config that can get me 8mhash?

[cryptod00d]

I finally got it to work using this: https://bitcointalk.org/index.php?topic=658975.msg7412560#msg7412560

The problem is that I'm only getting 5Mhs per 7990(a 7990 is 2 7970s). If there's anyone out there that can get me 8Mhs per 7990 I'd tip them very generously.

[unitedminers]

I finally got it to work using this: https://bitcointalk.org/index.php?topic=658975.msg7412560#msg7412560

The problem is that I'm only getting 5Mhs per 7990(a 7990 is 2 7970s). If there's anyone out there that can get me 8Mhs per 7990 I'd tip them very generously.

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

[sp_]

(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 <your ppool> --pool-algorithm darkcoin-mod -u <user> -p <password> -I 17 -g 4 -w 64

Important to use 14.6 drivers.

a 7970 should manage these clock settings:

sgminer.exe -o <your ppool> --pool-algorithm darkcoin-mod -u <user> -p <password> -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.

[cryptod00d]

I finally got it to work using this: https://bitcointalk.org/index.php?topic=658975.msg7412560#msg7412560

The problem is that I'm only getting 5Mhs per 7990(a 7990 is 2 7970s). If there's anyone out there that can get me 8Mhs per 7990 I'd tip them very generously.

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

Sorry, I'll give more info. I'm trying to run with x13. I'm on Windows 7. I have between 4-8GB in each rig; I've never seen a difference in terms of memory for mining though, truth be told. My GPUs are XFX 7990 Triple D's(not crappy hashers like most XFX). The miner I'm using is the one I linked, I believe it's sgminer 4.1 with the x11/x13 mod. I'm using a variety of drivers testing which delivers the best stability; drivers I'm using are 14.4, 14.6 and 14.7. None of them go over 2.65Mhs per 7970. Since I have so many and I pay no electric, even a little bit of performance makes a difference.

[cryptod00d]

(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 <your ppool> --pool-algorithm darkcoin-mod -u <user> -p <password> -I 17 -g 4 -w 64

Important to use 14.6 drivers.

a 7970 should manage these clock settings:

sgminer.exe -o <your ppool> --pool-algorithm darkcoin-mod -u <user> -p <password> -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 280x bat config file are you talking about?

I'm trying to mine on x13 since it looks more profitable. (am I wrong about this?) Wafflepool showed 550% profitability yesterday over LTC, while x11 only showed 250%. Today, it's a little more even with x13 showing 305% vs 257%. Which would you recommend??

I tried 1100 gpuengine at 17 intensity and it would only hash for 5-10 min before a driver crash occurred.

Is a really low worker rate better? Wafflepool was recommending a minimum of 256 for my card.

[Blank]

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

[cryptod00d]

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

I've got it running at over 3Mhs on x13 stable for about 10 mins, haven't done long-term testing. I think I might abandon x13 and use x11 though if it's better for heat because it's getting HOT without having them undervolted anymore. 1 card on each rig is almost to 99c, room temp getting to 93f even at night. The problem is that with x11 I'm getting 100% rejected shares for "low difficulty shares". Any idea what's wrong? I tried using the same settings that work perfectly with x13, no luck. Now I'm trying a million other combos with no success.

[cryptod00d]

Nevermind, I looked over something incredibly stupid: the port number. I didn't change it when I went from x13 to x11. x11 is now working and giving me 4Mhs. My problem is now heat. Why are people lauding x11 for its reduced heat? I'm seeing more or less the same temps as on x13. I have 5 rigs with 2 cards in each rig and 1 'core' in each seems to want to go to 97-99c. The other 3 'cores' stay at around 75c, 65c, 65c. Any ideas for reducing heat and not losing too much performance?

[Blank]

when x11 came out it was true thats it was ~40% cooler than scrypt, but since then an improved miner was released and it's now more like 10-20% cooler only.

Heat wise you can lower you memory clock as like i said it does help hasrate but not but by a huge amount. Other wise its the same old lowering voltage, mine are currently running at 1.1 volts but you could still go lower than that if you have heat problems. Mine where at 0.9v i think for scrypt mining which is much more energy efficient than default voltages.

Of Course if you lower voltage then you will need to lower you core clock too to maintain stability

eg if you run at 1.00V you will probably need to set your core clock in the 880-980 MHz range, you will lose performance but running at 90C is not cool.

[prometheianz]

when x11 came out it was true thats it was ~40% cooler than scrypt, but since then an improved miner was released and it's now more like 10-20% cooler only.

On Scrypt my rigs were using ~240kwh per day, on X11/X13 they're using ~140kwh, so it still seems to be 40% less energy usage, at least for me.

[dragonmike]

I had one gpu always run 10-15 degrees hotter than the other ones in my rig and I was wondering why... until I noticed that one of the two fans on the said card was not spinning. Fortunately I had a spare so I replaced the faulty fan and then all fine and dandy.

Could be just as trivial as that.

Otherwise, check if anything is either blocking airflow to that specific card, or if hot air (eg from another card that's fixed too close) is getting to it (instead of cooler air from outside).

I have a pretty good batch of Asus R9 280x DC2T's that hash X13 @ 3.33 Mh/s each (overclocked), which means you should be happy if your 7990's get ~6.5 Mh/s.

Use 14.6 beta rc2 drivers (or the 14.7, I believe they offer the same performance) together with Sgminer 5. It will allow you to switch between algos if you so wish.

try with the following settings:
intensity 18
worksize 64
algo marucoin-mod
hamsi-expand-big 1
hamsi-short true
shaders 2048
vectors 1
lookup-gap 2