Should You Modify Your ZeusMiner Blizzard Scrypt ASIC or Not

17 Jun
2014

zeusminer-blizzard-1

The ZeusMiner Blizzard Scrypt ASIC also available as the GAWMiners Fury is a nice little device that comes at a really attractive price for the hashrate it offers. They are the ideal choice for smaller miners that want to get a Scrypt ASIC miner, but don’t want to spend too much for it… and quite a lot of people like that already have purchased these devices. Being so attractive with their current prices and performance of about 1.3-1.4 MHS it is no wonder people are also interested in modifying them for even higher performance. The simpler thing that you could do is to try to improve the cooling with the addition of some heatsinks directly on top of the 6 ASIC chips to get a little more headroom for increasing the operating frequency with lower number of HW errors. The more complex thing is to try to do a voltage modification in order to allow for the chips to have no trouble operating at higher frequency.

People that have used or still use the smaller 5-chip Gridseed Scrypt ASICs and have done a voltage modification to them knwo that these small miners were able to handle a significant performance increase without trouble. The reason for that was the fact they they were originally designed to be used for mining both LTC and BTC, thus they could handle higher voltage and operating infrequence easily if you only used them for Scrypt mining. The case with the ZeusMiners however is not the same, it seems that their miners are already pushed quite high in terms of power usage and operating frequency not leaving you with much headroom for experimenting. Voltage modification of a ZeusMiner Blizzard or GAWMiners Fury is possible and can be done with the replacement of resistors just like on the Gridseed ASICs, however the advantage you can get in terms of hashrate increase is not going to be that attractive so that a lot of people would be willing to do it. There is a topic on the Bitcointalk forum where people are trying to modify their devices and are reporting some useful information and their experience and results, so you might want to check that out if you are interested.

To see the topic at the Bitcointalk forum about Fury/Blizzard tuning and mods…



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3 Responses to Should You Modify Your ZeusMiner Blizzard Scrypt ASIC or Not

Happydaze

June 17th, 2014 at 19:21

We won’t know how fast the Blizzard or Fury hardware can hash until we have software that permits clocking it past 382 frequency. Currently that the issue that needs to be overcome.

admin

June 17th, 2014 at 19:31

Happydaze, after looking at the communications protocol and the source code of the miner, unfortunately it seems that the max we can go is 382 MHz. This is a limiting factor in the communications protocol and how the miner figures out what is the actual frequency it should be operating at based on the user supplied parameter. The code does have a check for 382 MHz and if above it will set it to that frequency, but even if you remove the check and set higher number the miner will still not be able to operate at a higher frequency. The only possible option could be if Zeus releases a firmware update that can increase the 1.5 multiplier used for the frequency setting to lets say 2 for example… if that is even possible with just a firmware update.

Happydaze

June 17th, 2014 at 23:31

I keep thinking back to the 300kh/s+ Zeus originally said the chips could do. That was in March but by May they had reduced that to 210kh/s. So, either they have code that at least allows for 300kh/s per chip or the chips never in fact could do 300 kh/s.

Hopefully Zeus will see this as an opportunity to demonstrate that they at least had code that would allow the chips to run that fast.

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