I am getting about 2-3kh/s on a geforce 8400gs. Does this seem okay. I thought I should get much more when trying to mine digitalcoins which uses the same scrypt algorithm.

Hi guys,
            I have an Nvidia GeForce8400GS grpahics card with which I am trying to mine for fun and experience. I know , I know I wont get good performance , .... but atleast it has to work right. So first I installed http://www.nvidia.com/object/win8-win7-winvista-64bit-320.18-whql-driver.html and when it still didnt work I installed https://developer.nvidia.com/cuda-downloads but it still says no opencl devices found. Could someone please help me out?

Where can I sell the digital coins I generated for us dollars?

Thanks for the reply. It helped me understand the code better.

Hi guys,
            I am going through the open-source-fpga miner(https://github.com/progranism/Open-Source-FPGA-Bitcoin-Miner/tree/master/projects) source and I had a doubt.


The above data is then passed into the sha256 hash module which then proceeds to calculate the hash. I simply dont understand why we need to double hash the above data. According to the https://en.bitcoin.it/wiki/Block_hashing_algorithm we need to convert every 32 bit chunk from little endian to big endian and then  calculate the hash of that function. In the above example data_buf is a 256 bit register which holds 256 bits of the data returned from getwork. If we say the first version bit recieved from getwork is 1, then along those lines data_buf holds the value of bit 129-192 which has been endian shifted for every 32 bit chunk. But I still dont get why we have to calculate the hash as shown above in the code. Does someone know why hash is calculated in this manner?

Oh, so does that mean every time a transaction is added the merkle root changes? If so , then even if you find a valid block and a transaction comes in , is it ignored and put in the next mined block ?

Hi guys,
           I realize that in the mining process the block header is constantly hashed using  sha256  and if it generates a value less than the target then the block is created. However the wiki doesnt mention anything about adding transactions to the block. Lets say a solo miner finds such a block before anyone else does. Now how does bitcoin know what transactions to enter into the block when he submits his Json-rpc block found status?  Or does it do that automatically ?

Thanks. I will go through them

Hi guys,
          Does anyone know of some good documentation for scrypt apart from this one http://www.tarsnap.com/scrypt.html

LTC is an alt coin and is not a scam. Some pickup , some dont. It all depends on luck and of course the community support