Posts Tagged ‘Gridseed GC3355


It seems that Gridseed might be working on a new even larger Scrypt ASIC miner, or that is what got as information from a reader that sent a link to publication on a new mining forum called MinerTalk. From the apparently leaked photos of the new miner published there we can see that it is a larger box miner with integrated PSU and a LAN network interface. There are still no specifications available and no information what ASIC chips will the device use.


The miner seems to have 5 PCBs or modules with chips inside and there are only three small fans. On the second photo we can see that the chips on the modules are small, similar to the Gridseed GC3355 ones, though these might be new chips as well. Judging from the size of the chips and the miner we can assume that the miner should be capable of something like 25 MHS or 50 MHS even more in terms of hashrate (5-10 MHS per module). Though there is no information about actual specifications, so these are only assumptions for the moment.

To check out the topic about the new Gridseed ASIC at the MinerTalk forum…


Sandor111 has released an updated version of his cpuminer fork adding a TUI (Text User Interface) containing the most important information that you would need to know for your Gridseed ASIC miners in an easy to read format (source here). Another new useful feature in the latest release is the autodetection of the number of chips, so no need to set it manually via the command line anymore. We have a windows binary available for you, and we do recommend to give it a try if you were sticking to cgminer because of the TUI available there, especially now that cpuminer also has one. If you want you can still download the previous cpuminer for Gridseed with no TUI, we’ll have it available for people that prefer to use that, and below you can download the new TUI version for windows.

You can download the sandor111 fork of cpuminer for the 5-chip GC3355 ASICs for Windows OS here…


Gridseed ASIC users will be happy to learn that there is a new fork of the cpuminer software with support for Gridseed ASIC miners (for Scrypt only mining) thanks sandor111 over at the Bitcointalk forum. He has added support for local hashrate reporting which was one of the key missing features of the previous builds, but he did not stop at that, he has also added support for per chip frequency autotuning (automatic overclock until the best frequency is reached for each chip) and the ability to manually set frequency for each miner by using a single instance for multiple devices. There is also support for the new Gridseed G-Blade miner, you only need to set the number of chips to 40 for each of the PCBs of the Blade Miner in order for the local hashrate to be properly reported.

We have compiled a windows binary of the new miner and you can find the source here. Great work and essentially what the original cpuminer should’ve been from the start, and now it is finally here, simple and easy with all the right features available. We are currently testing the new miner, especially the autotune feature, so far it seems to work quite well, but be aware that it could take some time for the miner to adjust frequencies, so make sure you set a starting frequency that is closer to what you expect that the device should be capable of. For example 850 MHz for default non modified 5-chip ASIC, 950 MHz or 1150 MHz if you have dome some sort of a voltmod already. Do check the included Readme file for a description of the options and some examples as well as for a simple, but effective Batch script for using backup pools with the miner. If you find some problem or an issue using the miner please do report it, so that it can be addressed.

You can download the sandor111 fork of cpuminer for the 5-chip GC3355 ASICs for Windows OS here…