All About BTC, LTC, ETH mining as well as other alternative crypto currencies
Yesterday we have reported about a solution for volt modding and overclocking even higher the 5-chip Gridseed ASIC miners for use with the cgminer software modified to support Gridseed ASICs. We have tested the voltage modification on our older and newer revision ASIC miners, and t has allowed us to go from 850 to 950 MHz overclock on the newer miner. Unfortunately it was not working on the older ASIC miner and it was not working with other software miners such as bfgminer or cpuminer for Gridseed. Meanwhile there is an update that solves both of these issues we’ve experienced with the earlier solution. In fact you only need to solder a bridge between another two points on the ASIC miner – note the second green strip on the right from the firs one from yesterday where you need to solder too. This modification will permanently activate the higher voltage and should allow you to overclock all (most likely) Gridseed 5-chip ASICS regardless of their revision and firmware version with all of the available software miners that support them.
The power consumption after applying the permanent voltmod is 10W per 5-chip Gridseec ASIC miner with the fan or about 8W if you remove the fan and use passive cooling (not recommended for voltmoded miners) or use another form of active cooling. Doing the permanently activated voltmod solution we are still able to get best results at 950 MHz with no to very few HW errors and performance of a little over 400 KHS. Pushing for 1000 and 1050 MHz is also possible (going for 1100 MHz or more results in only getting HW errors), but the number of HW errors increases as well, so the actual performance might be lower than running the miner at lower frequency such as 950 MHz with less HW errors. As always do try on your own hardware as there is a variance and you might be able to get better results with your miners. If you do plan to do the hardware voltage modification be aware that there is a risk of damaging the ASIC, especially if you are not good with the soldering iron, so proceed with caution.