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1  Alternate cryptocurrencies / Mining (Altcoins) / Questions about mining Ethereum... on: August 19, 2015, 03:37:23 AM
So, I only current have a HD 7970 to mine Ehter and currently doing 25.7 MHS. I notice when I look at other people results, the 280x and HD 7970 seem constant at 24~25 MHS. The 290, 290x and Fury X do the same or slightly better by 1~3 MHS. More likely the miner isn't optimized for those cards, especially the Fury series. Instruction on the Ethereum forum aren't to organized, especially the mining which to me over a day to finally get working right. I couldn't get an HD 6950 2GB to work with the miner, I read that it requires a card with more that 1.4GB of memory at least. Maybe the miner only works for AMD GCN cards and Nvidia 7XX series cards or newer.

What would be ideal: mine with HD 7970/ R9 280x or a bunch of GTX 750 ti's?
2  Bitcoin / Mining speculation / What's the best hardware, that's not vaporware? on: May 27, 2015, 11:11:17 PM
What's the best hardware; ie. cost, availability, electricity, etc? That's also not vaporware, ie. BFL, etc....
3  Alternate cryptocurrencies / Altcoin Discussion / Why is Sharkcoin surging in trade volume? on: May 26, 2015, 08:40:22 AM
Strange that this coin doesn't really have any true value to cryptos and has a 50,000,000 premine out of 400,000,000 coins. Is this just a pump and dump coin at the moment? Why is it so hotly trade on the only one exhcange, a Chinese one only? More volume trading than LTC at the moment, am I missing something about the coin?
4  Alternate cryptocurrencies / Mining (Altcoins) / What's the most profitable GPU and CPU coins to mine? on: December 15, 2014, 08:46:06 AM
I know gpu and cpu mining is marginal at time for profits, but which coin can actually make some profit. Not worrying about ROI if the equipment is already owned and just account for electricity cost.
5  Alternate cryptocurrencies / Altcoin Discussion / Burstcoin PR Discussion Thread on: October 16, 2014, 03:07:01 PM
Here is a thread to promote and push Burstcoin. Please stay on topic and no FUD. Creative and forward thinking ideas please. I have a poll of ideas, please tell me to add more. I am not a pro in promotion, but as a community, we are looking for one that is legit and honest. We hope to get a more refine thread under a professional promoter in the future, hopefully. Also, we can discuss this on reddit: and .

Update 10/17/14: Education funding in the IT field, Promote at cryptocurreny conventions, Specialized Burst Assets, Hard Drive Company Sponsorship, Youtube Burstcoin Channel, Online ads are the top votes on the poll to date. These are ideas we will present to the PR team, once it is assembled.


I might build a Burstcoin youtube channel today or tomorrow.  If I decide to make it, I would like some people be a manager of the channel to edit and add content.
6  Alternate cryptocurrencies / Mining (Altcoins) / AMD FirePro S9150 Server GPU on: August 20, 2014, 04:30:41 AM
Wow, 16GB DDR5 VRAM and max power usage at 235 watts. I know it will be pricey, but it would be cool to see how this do in crypto mining. Wondering if this is a sneak preview of the next line of gaming/consumer grade gpu cards?
7  Alternate cryptocurrencies / Mining (Altcoins) / Proof of HDD Capacity (PoC) Mining Config/Data Sharing/Collaboration on: August 15, 2014, 09:28:59 AM
Hi everyone, hope everyone that is mining Burst is enjoying it and finding blocks.

I just wanted to create this thread to sharing info and ideas to improve mining Burst or any future PoC coin.

Here is an rough draft of a google spreadsheet I created, please add to it:

Everyone should have a fair knowledge to mine and to withhold that knowledge would be not good for the crypto-community in general.

Be glad to see people helping each other out here and please refrain from getting off topic, only talk about mining PoC and issues with it.

If I see any info that is helpful enough to be post on the OP, I will append the OP and add it below.

Thank you everybody,

Appended Info:

Here's the thread for Burstcoin for cross reference:

Formula for calculating Plot/Nonce Size: x=HDD used data size in GB

                                                f(x)=Plot/Nonce size


Guides for mining Burst taken from OP and thanks to the guys for supplying it:

Windows mining guide: (thanks to KSpinner)

One thing that cause me a little issue was the wording on KSpinner's guide:

run_generate.bat file
Example for this is:
C:\Windows\SysWOW64\java -Xmx1000m -cp pocminer.jar;lib/*;lib/akka/*;lib/jetty/* pocminer.POCMiner generate *youraccount#* *plot#tostartwith* *plot#toendwith* 1000 4

It should have been this:
C:\Windows\SysWOW64\java -Xmx1000m -cp pocminer.jar;lib/*;lib/akka/*;lib/jetty/* pocminer.POCMiner generate *your_account_#* *plot_to_start_with_#* *plot_size_#* 1000 4

A note, do not include the asterisks and put number instead in the following words: *your_account_#*, *plot_to_start_with_#*, *plot_size_#*

Your plot size ideally should be the multiple of the number that follows it, that number is the stagger size for each generation/write to the hdd.

Example, I underlined the numbers to show each numbers more clearly:

C:\Windows\SysWOW64\java -Xmx1000m -cp pocminer.jar;lib/*;lib/akka/*;lib/jetty/* pocminer.POCMiner 1234567890987654321 0 5734400 1024 4

Linux mining guide: (thanks to TetraHect0rCannabinol)

Thanks to dcct, here's a tool to calculate overlapping plots from the Burst thread:
And plot merge tool(Linux only):

Please do not alter others information on the spreadsheet as a joke, that's downright disrespectful. That would not help the community out.
8  Alternate cryptocurrencies / Altcoin Discussion / Vote For A Coin Review Panel Here On BTCTalk. on: July 27, 2014, 10:30:30 PM
Too many coins getting release and more than half are scams. It would be nice if there was a Coin Review Panel here on this forum. Some form of protection from everyone. What's you ideas for protection against these potential scam coins? Research is enough at times.
9  Alternate cryptocurrencies / Altcoin Discussion / To the companies that create mining hardware. This is a reminder.... on: June 26, 2014, 06:24:18 AM
For those companies that falsify their claims of promised hashrates, hold back shipping dates and delivering damage good. This should be a warning that customers still come first and don't claim something that you can't promise, ie. vaporware. Just bad business practice and karma if you are intentionally do wrong to customers.

Here's the class action suit against Cointerra:
10  Alternate cryptocurrencies / Altcoin Discussion / What is currently the most profitable CryptoNote coin to mine? on: May 23, 2014, 02:50:30 PM
Just as the pool question states. Monero seems to be, but has 4 times the difficult compared to Quazar.

Please add replies of which one is the most profitable.
11  Alternate cryptocurrencies / Mining (Altcoins) / Which non-scrypt algo aren't unaffected by underclocking memory? on: May 16, 2014, 02:27:47 PM
Which algo's are unaffected by underclocking gpu memory and still hash away at the same rate? ie. X11, Scrypt-OG, HEFTY-1, Groestl, Maru, XPM (GPU mining), etc.....
12  Alternate cryptocurrencies / Altcoin Discussion / Is there any X11 multipools that have more than just DRK and HIRO? on: May 13, 2014, 11:46:38 AM
I know there is, but it only has HIRO and DRK. Is there any other multipool that have at least 10 or more X11 coins to mine?
13  Alternate cryptocurrencies / Altcoin Discussion / What's you personal thoughts of the current XPM GPU miners currently out? on: May 09, 2014, 05:27:35 AM
Like the subject title is questioning your personal thoughts. People have conspiracy theories that some of the devs are holding back higher performance miners for themselves and such, just pure speculation at this point. But it begs to differ when madMAx came out with one that run 4.1~4.4 CPD on a 280x/7970 as the other ones are below 3 CPD, that does raise some questions. Also, MadMAx pool had to go down because of DDoS attacks and someone on ypool said that ozzy is behind it, but that could just be rumors.

What's you stance and position on this? Like to see some substantial evidence if any of this is true.  
14  Alternate cryptocurrencies / Mining (Altcoins) / What is the best hashing efficient card for Scrypt-N mining? on: April 24, 2014, 04:10:27 AM
So far I get the following for mining GPUcoin:

2x 5870: 175 kh/s (400 kh/s Scrypt each)
1x 6950 1GB: 162 khs/s (400 kh/s Scrypt)
1x 6950 2GB: 161 kh/s (400 kh/s Scrypt)
1x 6970: 247 kh/s (505 kh/s Scrypt)
1x 7850 2GB: 212 kh/s (360 kh/s Scrypt)
1x 7970: 340~360 kh/s (740~750 kh/s Scrypt)
2x R7 240 2GB DDR3: 52 kh/s (102 kh/s Scrypt each)

From my findings, the 7850 2GB does the best than the other cards I currently own, as it does 360 kh/s on normal Scrypt mining as it does close to 58% with Scrypt-N.
15  Alternate cryptocurrencies / Mining (Altcoins) / AMD Radeon R7 240 conf for Scrypt, Scrypt-N and other algos? on: April 09, 2014, 11:24:57 PM
Just trying a couple of AMD R7 240 I got from the GPU coin store for fun.

What intensity, worksize, TC, etc. do I use for it?

I'm getting 1.178 mhs for Scrypt-OG with -I 17, worksize=256 and TC=8192.

With the same settings I get 105 khs for Scrypt.

With X11 I get 325 khs.

Haven't tried Scrypt-N.

This is with a core of 950 and memory of 1000.
16  Alternate cryptocurrencies / Mining (Altcoins) / Claymore XPM GPU Miner discussion on: April 04, 2014, 08:38:15 PM
Update: I will no longer update this topic anymore (maybe in the future), as there is no more real activity to make an improve miner as the diff goes up. Plus the unwillingness for Claymore not making the miner feasible to work with the newer AMD drivers (14.4 and newer) is unknown. As others have gain performance with miners that use 14.3 and up.

First, here's a link to his miners:!vhB2BCIA!ZuBRI_YyP-SztQnINK6xkA (Note: There are two miners: one for ypool and a solo now available.)

>>>>>"Update: v10.1 Solo and Pool miners are released"<<<<<
- Fixed bug with "-ss 3" option.
- Improved speed by about 3% for all cards.

I made this thread so there is no confusion with primegpu's XPM gpu miner. I am NOT the CREATOR of the miner, Claymore is. I just simply created this thread and in no way profit from it and/or partnership with the miner dev....I get 0% profits for posting and/or maintaining this subject....

Difference of both miner are:
*Primegpu is for solo mining (at the moment) and optimized for AMD 7970/280X gpu's. No more development at the moment. Update: new miner as of 6/24/14.
*Claymore is for ypool's XPM pool or solo and optimized for AMD 290/290X gpu's. 10% dev fee from the miner.

Both miners run different AMD GCN gpu cards, but performance will be less and varies, if it works with those other AMD GCN cards. Both are closed source, which I do not personal agree with and think is unfair to the community. It's funny how greed can make people do shady things. I'm all for people to get a cut, but not monopolizing the wealth.

Also, there is a Nvidia one discussed here:
This is the thread about primegpu's miner:
Here is the open source miner:
Here is the alternative pool to GPU mine XPM with madPrime miner:
Here is the madPrime source code to the miner and xpmpool:

I currently own the following cards: 7970, 7850 2GB, 2x R7 240, 6970, 6950 2GB, 6950 1GB and 2x 5870's. Running on AMD 14.3 Driver with no slow down issue on Windows 7 Ultimate and AMD 13.12 Driver on Windows 8.1 Pro on multiple machines.

But from now on from this point, only discuss Claymore's.

If your running successfully with the miner, please post stats and setups to help the community out.

>>>>>>>>>Here's the "Read Me" for the Claymore's XPM GPU Miner<<<<<<<<<<

Two versions are available:
1. Pool version, works with YPOOL only.
2. Solo version, works with "Primecoin Wallet" only.

Catalyst 13.12 is highly recommended for best performance and compatibility.

You can try to set "GPU_MAX_ALLOC_PERCENT" environment variable as "100" for best performance.

This miner is free-to-use, however, current developer fee is 10%.

This version is for recent AMD videocards only: 7xxx and 2xx. No nVidia support.

This version is for Windows x64 only. No Linux support. No Windows x32 support.

This version has no GPU temperature and overclocking management. You can use "Claymore GPUs Control Utility" for that.


-o ypool address for pool version and Primecoin Wallet address for Solo version.

-u <username>.<workername>

-p password

-di GPU number, default is 0 (first AMD GPU available). If you have several GPUs,
create several .bat files to start several instances of NsXpmMiner.exe with different -di parameter to utilize all GPUs.
Note: sometimes it's impossible to start several miner instances at once, they are crashed. It's AMD drviers bug, start miners one by one.

-ss CPU load mode. 1 (default) - low CPU load so you can use several GPUs in one system. 0 - a bit higher mining speed but heavy CPU load, so if you have several
GPUs or slow CPU do not use this value. 2 - minimal CPU load so you can use many GPUs on slow CPU, mining speed will be a bit less. 3 - super-low CPU usage.

-t number of CPU threas that are used to load GPU. 4 by default, it is good value for most cases. You can try to use 8 if your CPU is slow.

-sd detailed stats mode. 0 (default) - show minimal statistics. 1 - show more detailed statistics. You can also enable/disable detailed statistics by pressing "s" key.

-nofee: set "1" to cancel my developer fee at all. In this mode some recent optimizations are disabled so mining speed will be slower by about 25%.
By enabling this mode, I will lose 100% of my earnings, you will lose only 15% of your earnings and also will save about 15% of electricity.
So you have a choice: "fastest miner" or "completely free miner but a bit slower".
If you want both "fastest" and "completely free" you should find some other miner that meets your requirements, just don't use this miner instead of claiming that I need to cancel/reduce developer fee, saying that 10% developer fee is too much for this miner and so on.

-log <filename>: enable some logging to specified file.


NsXpmMiner.exe -o -u YourLogin.WorkerName -p YourPassword -di 0
NsXpmMiner.exe -o -u YourLogin.WorkerName -p YourPassword -di 0 -hc 256


NsXpmMiner.exe -o -u YourLogin -p YourPassword -xpm AeRaNNK1JbZNKQTaXLJfeVUWQ5cPN5BiRF -di 0
NsXpmMiner.exe -o -u YourLogin -p YourPassword -xpm AeRaNNK1JbZNKQTaXLJfeVUWQ5cPN5BiRF -di 0 -hc 256

Do not forget to specify your XPM address!



It is important to use Catalyst v13.12, otherwise you can get really bad performance or even fatal error like "invalid target".
For multi-GPU systems: disable CrossFire in Catalyst Control Center.


6xxx and earlier. These cards will not be supported at all.


Press "m" to see a performance counter, total round time (TRT). Don't compare this value to other miners,
this value is not related to any other numbers of different miners.
You should see values like this:

150 for 290X
250 for 280X
350 for 270X
250 for 7970
350 for 7950

Less values are better, you can overclock cards or do anything you want to minimize these values.
Also note that CPU load must be less than 80%, otherwise GPUs won't be loaded completely.
Even identical cards installed on the same system may show slightly different values, it's ok.
Also do not overclock your cards too much, it can cause such bad things like a lot of invalid shares, total speed degradation, crashes and so on.
Note: if video driver crashed and Windows recovered it, you need to reboot PC, otherwise miner will work VERY slowly.


1. Install Catalyst v13.12.
2. Disable overclocking.
3. Reboot computer.
4. Set "-hc 256" option if it still does not work properly or crashes.


1. Use official Primecoin wallet with this miner.
2. Wallet setup: copy default "primecoin.conf" file from miner archive to "c:\Users\YourWindowsLoginName\AppData\Roaming\Primecoin" folder, then start wallet. Of course you can change
settings in "primecoin.conf" if you know what you are doing.
3. It is very important to have a lot of connections in Primecoin wallet, otherwise you will have many orphaned blocks.
So if you have only 8 active connections, you need to allow incoming connections, check related topics about it.


You cannot estimate your eranings until you run miner for at least 24 hours.
A lot of people start miner for 3-6 hours and then claim that they earn too small amounts.
Ypool calculates earnings based on last 160 blocks that were found by Ypool, so you need to wait
at least 5*160 blocks until you see real earnings, it is about 12 hours.
Another important thing is that Ypool gives you big share values only when you found 9ch or 10ch shares,
it takes several hours to find such shares, so to estimate your profit you need at least 24 hours of mining.

So the correct way to calculate earnings is: mine for 24 hours and then check your earning per block in pool statistics,
and multiplicate it by blocks that ypool finds per 24 hours. Or mine for 48 hours and then take earnings for last 24 hours.

Again: after 24 hours you will not see good XPM value in your ypool account, it is because it takes up to 24 hours to get good mining speed.
But when you drop mining you will get coins for the same time, so mining is fair. To get earning rate immediately after first 24 hours of mining
you need to open "stats" tab on ypool and select "blocks found", then click on latest block number that pool found and find your name in the list of all accounts.
See the XPM rate that you get per this block. Then open "overall pool stats" tab and see the number of blocks that pool found for 24 hours.
Now multiply your block rate by this number of blocks and you will get average earning that you will get within next 24 hours.
If you don't like such calculations you can just remember XPM that you got after 24 hours (A) of mining and then wait another 24 hours and check XPM again (B), then calculate earning for last 24 hours as B - A.


Sometimes you can get message "invalid share: reason share is outdated". It is ok, it just means that you found share too late, new block was just found but miner
did not get it yet and found share for old block. Such old shares are not accepted by server.

Sometimes you can get message "invalid share: reason Share failed Primecoin's CheckPrimeProofOfWork()". It is ok, you should not get such messages often,
mainly it shows when miner found large chain (length >7) and also found subchain 7ch, this subchain is incorrect since it is a part of larger chain. Larger
chain is accepted by server and subchain is rejected.


These are the share values on ypool:
                                                 Minimum difficulty for a Primecoin share is 7.0 (7ch or above)
                                                 The share values are: 7ch 0.05, 8ch 1.5, 9ch 35, 10ch 60 and block solvers are 85.0.

Claymore is also on chat.

"PLEASE refrain from vulgarity, rude comments and any other negative comments!!!"

Thank you in advance....Also give major credit to Claymore for the miner...
17  Alternate cryptocurrencies / Altcoin Discussion / AMD HBM technology, is it going to help keep GPU's relevant in Scrypt Mining? on: April 04, 2014, 05:30:09 AM
So, AMD is going to bring out HBM (High Bandwidth Memory) technology? In theory it sounds great, but you know how theory isn't event close to actual results in most cases.

18  Alternate cryptocurrencies / Mining (Altcoins) / [POLL] Best OS to GPU mine with? on: April 02, 2014, 07:46:23 AM
I find that BAMT or Windows 8/8.1 does best for GPU mining. Which OS is best to gpu mine with?
19  Alternate cryptocurrencies / Altcoin Discussion / [Poll] What algo will be GPU mined after ASIC's fully take over Scrypt mining. on: April 02, 2014, 07:27:22 AM
Just a poll to see what everyone thinks will replace GPU mining after the ASIC completely take over Scrypt Mining.

Personally I mine X11 or HVC. But I like Fuguecoin hash rates and hope someone can fork a coin from it mix it in a new algo with X11-ish concepts.
20  Alternate cryptocurrencies / Mining (Altcoins) / Velocity and other Scrypt Jane coin settings on: January 09, 2014, 08:41:30 AM
Ok, so Scrypt Jane is originally intend to be a cpu mined algo. But can be initial mined with gpu while the N-Factor is low enough.

So, what are good setting for mining Scrypt Jane? I notice that you can't go too high on intensity as regular Scrypt algo and same goes for the worksize, 64 seems to be the sweet spot.

I'm running 2x HD 6970's and 2x HD 5870's at I=11 and W=64 for a total of 1820 kh/s.
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