Crypto Mining Blog

There is a new fork of cgminer for the Gridseed 5-chip GC3355 ASIC devices that we have compiled for windows (source) that you can download below, it is based on the previous version by dbartle, but adds some useful extra functions for people with multiple ASICs. You get to set the operating frequencies of the ASIC at a smaller steps from 700 to 1088 MHz, below is the full list of supported frequencies:

700, 706, 713, 719, 725, 731, 738, 744, 750, 756, 763, 769, 775, 781, 788, 794, 800, 813, 825, 838, 850, 863, 875, 888, 900, 913, 925, 938, 950, 963, 975, 988, 1000, 1013, 1025, 1038, 1050, 1063, 1075, 1088.

Also you are able to set different operating frequency for each device by giving the devices’ serial number and operating frequency, below is an example:

--gridseed-freq 6D9426984857=988,6D9656774857=975,6D8956965251=975

This can help you maximize the hashrate that you get from all of the devices you have, though it will need some time to figure out what is the best frequency for each of your ASICs. You can normally see the serial number of a device after the GSD X, this also works with both the newer and older revisions, the only difference is the serial number you will see (0001 for the older vs something like 6D8956965251 for the newer devices). Note that you should be able to set a general frequency and only change some of the miners operating frequency with their serials.

– You can download cgminer 3.7.2 ALT for Gridseed ASICs on Windows OS here…

We have compiled a windows binary of the latest cgminer 3.7.2 for Gridseed 5-chip GC3355 ASICs (source) that allows you to have finer control over the overclock frequencies you select. Previously you had to increase frequencies in steps of 50 MHz, with this version however you are able to use smaller steps of 25 MHz. So instead of having to go from 850 MHz to 900 MHz, now you can also try running at 875 MHz. This may allows you to squeeze a few more KHS out of your ASIC device when overclocking it to the maximum stable frequency with low or no HW errors at all.

– You can download cgminer 3.7.2 OC for Gridseed 5-chip GC3355 ASICs on Windows OS here…