So if the the card crashed on the 1625Mhz timing, it would be back to the safe 1500Mhz timing after a reboot. Since the default memory timing is 1475Mhz, my modified timing would only be used when overclocking the memory over 1500Mhz. To reduce the chance of bricking my card, the first time I modified only the 1625Mhz memory timing. Obviously one type of memory the BIOS supports is Elpida, and from comparing BIOS images from other cards, I determined that memory type 02 is for Hynix. This is so the same BIOS can be used on a card that can be made with different memory. The Club3D BIOS actually has 2 sets of timings, one for memory type 01 (the number after F0 49 02), as and for memory type 02 (not shown). ![]() The timing for up to 1625Mhz (C4 7A 02) comes after it, and then 1750Mhz (98 AB 02). I found it by searching for the string F0 49 02, which you first have to convert from little-endian to get 249F0, and then from hex to get 150,000, which is expressed in increments of. I've highlighted the 1500Mhz memory timing in the screen shot above. Here's an example based on the network hashrate (in thousands) at block 1072, for a rig mining 140 solutions/s:ĭaily ramped mining reward in blocks: 308 I was unable to find any zcash mining calculators, so I wrote a short python calculator. A version including silentarmy's kernel is in the works. Genoil has released a miner, but only Windows binaries with tromp's kernel at this time. Increasing the core clock on the R9 380 cards from 900Mhz to 1Ghz increased the performance by 3-4%. I experimented with the worksize and threads values in config.txt, but was unable to improve performance compared to the default 256/8192. Under Ubuntu with fglrx drivers I get about 11 solutions/s for both R7 370 and R9 380 cards. On Windows running driver version 16.10.1 I get about 26 solutions/s with a Rx 470. I get the best performance with the silentarmy kernel, but with only one instance as running 2 instances results in a crash. Windows and Linux binaries can be downloaded from coinsforall.io, the pool the software is designed for. I have been using eXtremal's miner version 0.2.2, which uses OpenCL kernels from the zcash open-source miner competition. Miners using the "z" address have apparently had problems receiving their zcash payouts from mining pools. A bug in the zcash network software has meant problems with private transfers, so it is recommended for miners to use only transparent wallet addresses until the bug is fixed. Zcash has both private address starting with "z", and public or transparent address starting with "t". Despite the low mining reward rate, mining pool problems, and buggy mining software, I was able to earn 0.005 ZEC in one day with a couple rigs. Even after 24 hours, 1 ZEC is trading for about 6 BTC, or US$4300. However the first hour of trading on Poloniex saw zcash (ZEC) trading at insane values of over 1000 bitcoin per ZEC. I did not expect zcash mining to be immediately profitable, since mining rewards are being ramped up over the first month. Zcash promises private transactions, so that they cannot be viewed on the public blockchain like bitcoin or ethereum. Thanks Marc, you march, silently!Īlso thanks to ocminer from suprnova and feeleep from coinmine.Zcash is the hottest coin this month, after going live on October 28th, following several of months of testing. Thanks John, your rock!įrom version 0.4 onwards I'm using Marc Bevand's SilentArmy solver. Up until version and including version 0.3 I could use OpenCL ported versions of John Tromp's Equihash solver. This is especially the case when you have differetn models of GPUs in your rig. It can help to launch the miner for a single gpu first, before trying to run with multiple GPUs.
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