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Download cpuminer for Gridseed 5-chip GC3355 ASICs with Reduced Power Usage

2 Mar


In our recently published first impressions from the Gridseed 5-chip Scrypt ASIC devices we have mentioned that with the provided cpuminer mining software the power consumption of these devices will remain high (up to 60W) even when only mining Scrypt cryptos. Normally the power consumption for scrypt mining with these devices should be about 6-8W, but it seems that the originally provided mining software had an issue. Gridseed have apparently provided an updated cpuminer, however only as a source that you needed to compile and there was no version available for Windows, so we have spent some time and efforts in order to compile the fixed version and provide you with a downloadable executable for Windows.


As you can see after starting the new fixed version of cpuminer on our 5-chip Gridseed CG3355 ASIC device we now have 8W of power consumption instead of the 56W that we previously had with the older version of the cpuminer software. So if yo are using the older version, then you should update immediately to the new one as it will significantly reduce the power usage of the device to the promised level for Scrypt mining. Note that this reduction in power usage may also help you get slightly higher overclock, though such is not guaranteed. Note that we have compiled and provide you with a downloadable version of the fixed cpuminer for Windows only, use the link below to get it.

You can download the fixed cpuminer for the 5-chip GC3355 ASICs for Windows OS here…

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28 Responses to Download cpuminer for Gridseed 5-chip GC3355 ASICs with Reduced Power Usage


March 2nd, 2014 at 07:30

I really like the improved Scrypt only version of CPU miner! Thanks!
But, can you also incorporate local Hash Rate Monitoring and Temperature Monitoring and Fan Speed Control including on and off.
Could you also implement automatic fan speed based on temperate ranges we set it to?
Again, well done!


March 2nd, 2014 at 08:20

One other thing, what are the RED and GREED LED’s indicating?
Knowing that would be great!


March 2nd, 2014 at 10:30

We have just compiled the new code provided by Gridseed, haven’t modified it, we expect to see the requested features implemented by them as they know their hardware and don’t reveal too much information about it. With Gridseed you have to pretty much figure out things by yourself…

We actually don’t know what the LEDs are for exactly. In the normal state the green one should be on and blinking from time to time, probably something related to a new share accepted, completed or sent back. The red LED is some sort of a status indicator on the USB to COM board.


March 2nd, 2014 at 17:57

Hmm, sounds like their name should GreedSeed where it comes to sharing information :D
Why the heck would they withhold operations info’ when the more we users know, the more control we have over OUR miners thus the better off we are in all respects! We know more, GridSeed sells more product! Geesh! What arrogance!

Well, I hope you stay on them, make really good friends with them so they’re eating out of your hands ;) Then get the rest of the code and implement it!

Any way to clean up any final issues cpuminer has with comm ports?

Thanks for your work!
Really appreciated!


March 2nd, 2014 at 18:02

Have you figured out how to mine both Bitcoin and LTC from these devices in Windows without the controller? If so, please enlighten us.
Thank you. You’ve done great work here.


March 2nd, 2014 at 18:53



March 2nd, 2014 at 18:57

wolfey2014, I suppose they rushed the product before being ready for market release and that caused all the problems… they are also Chinese company, so their approach is probably different than what we expect from a product and a service.

EZ, no idea about that, but why would you want to mine BTC with these devices anyway? Mining Scrypt with 6-8W power usage is totally worth it, the SHA-256 performance they will provide at an extra 50W or so increase in power usage is not worth it anymore for the about 9-10 GHS they should be able to provide per 5-chip unit.


March 2nd, 2014 at 20:34

I agree that they might not be worth it for people who care about power consumption, but they are being sold as a Dual Miner, so it would be nice to at least know how to do it, and give the people who don’t worry about power some extra hashing. If you have any thoughts on how, it would be great.


March 2nd, 2014 at 22:30


March 2nd, 2014 at 23:45

EZ, still no luck in making it work in Dual mode on the single device. The single chip USB miners had two COM ports when in dual mining mode – one for LTC and one for the BTC miner software.

Rowan, softwre crypto miners such as cpuminer and cgminer are often reported by some antivirus software as potentially dangerous, and they can actually be if you are installing something that has nothing to do with mining and get such a warning. The download provided here is virus free, you would get the same warning with the official cpuminer that is not intended for use with Gridseed’s ASICs.


March 3rd, 2014 at 02:27

My GC3355 miners are supposed to be able to mine any Scrypt coin, right?
What are the differences between some that I can mine and others that I can’t?
For instance, I can’t mine Klondikecoin, they are set up for GPU’s evidently.
Well, so is Litecoin and, I can mine them. Why can’t I mine Klondikecoin, Karmacoin or Neocoin?
I don’t get it.
Can someone give me a reasonable explanation on this?
I want to start mining all the most profitable coins now that I have my miners all tweaked and mining at maximum efficiency ;)


March 3rd, 2014 at 09:33

Hey, another important question:
re: GC3355 on board UART.
Spec’s say the baud rates range “from 9600bps to 6.25Mbps.
The typical baud rate is 115,200.”
Does this mean the baud rate is defaulted to 115200bps?
If so, does it seem to work stably?
If not, how does one set the port speed to what they want.
What are the valid speeds? There should be a list somewhere. Ain’t in the specs’…go figure ;/
Thanks a bunch!


March 3rd, 2014 at 12:01

wolfey2014, you should be able to mine all standard Scrypt crypto coins with the ASIC. However if they use some sort of modification along Scrypt or need a special software miner they are no go with the Gridseed. The chips inside are designed to work only with SHA-256 (BTC) and Scrypt (LTC and the likes), not like with a GPU where you essentially need a new OpenCL code for a different algorithm and the video card will be able to mine it.

As for the baud rate, this is essentially what speed the virtual COM port of the ASIC (USB to COM board used) is used to communicate with your PC and the default baud rate of 115,200 is apparently more than enough.


March 4th, 2014 at 16:16

do they release fixed cpuminer for linux as well?

jim zeroff

March 7th, 2014 at 18:43

Does some have a sample command line for dual mining? I would appreciate the help


March 7th, 2014 at 18:46

hexen, check the official Github repository for the source code.

Jim, for Dual Mining mode check this guide:


March 8th, 2014 at 18:17

Just want to confirm; the gridseed5 device in scrypt only mode uses 8Watt totall and delivers 300khash/s, correct?

Or is it 8watt per chip and thus 5×8=40watt at 300khash/s? I’m slightly confused due to mixed namings.



March 8th, 2014 at 22:15

Justsome, it is 8W total for all 5 chips in Scrypt only mining mode.
The hashrate is about 300 KHS with the default frequency, overclocking to 850 MHz we get about 360 KHS stable.


March 9th, 2014 at 14:09

Thanks allot admin! That sounds amazing.


March 15th, 2014 at 05:46

Anything for working gridseed with Bgfminer? Faldo can get get it to did the device but not hash anything. Any ideas?


March 15th, 2014 at 07:40

doh, nvm what i said before. trying out the cpuminer, works but hashing 0.00 kh/s anyone else have this issue? also read somewhere about the lights the green is the 5v, red blinking is hashing. read somewhere on bitcointalk, bit more to it though. but like to get this thing hashing so any help would be awsome. great work by the way.


March 15th, 2014 at 12:56

cpuminer does not report local hashrate, it shows 0.00, but it is working, check what the pool is reporting for hashrate. The new modified cgminer and bfgminer for Gridseed do report local hashrate.


March 17th, 2014 at 15:49

When I click on the link for Gridseed Reduce Power Usage, I just get spam. Is there a new link or an alternative site you can provide?


March 17th, 2014 at 16:00

pdmike312, what link are you clicking on? The download link in the article above points to a zip file and works just fine. We would recommend to try the newer cgminer and bfgminer releases that are already available with Gridseed support instead of cpuminer, they do have the fix for lower power usage when in Scrypt mining mode only.


March 21st, 2014 at 19:31

Any updates from the cpuminer guys on monitoring local hash rate in real time for the GS3355 5 chip?
Is there a separate hash rate monitor I can use on top of or with cpuminer in real time without having to change over to the more complicated cgminer or bfgminer programs?
I just want to see what my local real time hash rates are on each miner for bench marking etc.


March 21st, 2014 at 20:05

No updates to the cpuminer code from Gridseed for quite some time, and we don’t think they are going to be doing something more to the official code now that the community has picked things up and have integrated support into cgminer and bfgminer.

Kris H

April 12th, 2014 at 06:53

Does Any one have a link to the dogecoin mining software for the gridseed? Thankx.


April 12th, 2014 at 10:13

Kris H, Dogecoin is mined with the same miner software as all other Scrypt crypto coins on the Gridseed, you can use cpuminer, cgminer or bfgminer with support for the Gridseed ASICS to miner DOGE or another Scrypt coin.

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