[OPEN][EU]CXMining R1: Gridseed LA5U 5-chip Dual Miners 0.39 btc

[cryptrol]

I see posts about new firmware for 5 chip. Hashing at 500Kh/s. Does this apply for these units too?   

Can you link here the source of this ?
Thanks.

[Adamlm]

I see many people posting "one for me", "I'll take two" etc. but I assume there is no reservation queue until this GB is officially open, right?

PS. Two for me please

[treckpique]

its a little vague how to connect them, do you need a controller unit just for one?

P.S. 1 unit to the netherlands 

[Girhes]

The "controller" itself is a small embedded pc like a raspberry pi or a routerboard. You can use any number of units either on a normal pc or anything else you can compile the modified miner software for.

[Adamlm]

The "controller" itself is a small embedded pc like a raspberry pi or a routerboard. You can use any number of units either on a normal pc or anything else you can compile the modified miner software for.

And what about recommended power source for these miners?
Is a standard PC PSU ok for it (like Corsair 750W) ?

[Girhes]

Is a standard PC PSU ok for it (like Corsair 750W) ?

You'll have to make cables for your PSU with the appropriate DC connectors, but yes, you can use any 12V source then. Just keep in mind if you use a PC PSU it has to get feedback from the 12V rail(s) to control the output voltages, otherwise you won't be able to load it 12V only. I think most of the recent ones will be fine, it never hurts however to look after a review first

[gh2k]

Any ideas on when you'll be opening for orders?

[solidminds]

I see posts about new firmware for 5 chip. Hashing at 500Kh/s. Does this apply for these units too?   

Can you link here the source of this ?
Thanks.

Source no, but check this post:

https://bitcointalk.org/index.php?topic=421921.msg5025317#msg5025317   

[sooraw]

10 units for me, please update when available.

What do we need to fix so we can get the mup and running as soon as they arrive?

I mean what equipment is required to run them (psu, cables, etc?)

[vvhiteknight]

Put me down for 10, will buy 20 if you need extra numbers.

[cryptrol]

I have just received feedback from Gridseed.com , the numbers :

Brand：Gridseed
Chips：Gridseed GC3355. Each unit has 5 chips.
Mining Capability(Official Number)：BTC Mode:10G, LTC Mode:300K
Power Consumption：Dual Mode or BTC Mode: Approximate 100W/Unit,
LTC Mode:20-25W/Unit
Price: To be announced.
Payment: We accept RMB or USD,
Shipment against Payment.
Shipping: We only ship to Mainland China address; oversea buyers need to find international carriers themselves.

Minimum order is 100 pc, it took 2 full months for them to answer my email ...
Guess the most tricky part is dealing with customs, also they don't accept BTC/LTC as payment, funny they are selling mining equipment.
Also the power figures are not that impressive.

[squall1066]

I am completely confused  (did not take much I know  )

gridseed.com shows the unit at 60KHs, the youtube video after a few min show's it peek at 41KHs, but the Gridseed GC3355 5 chip shows a 300KHs in LTC, Can someone brake this down for me please? What is 0.39BTC actually paying for?

Also, Is this a LTC only or any scrypt coin? I would do a few units if it works on other coins too.

[Drgreen451]

When this gb starts I am very interested in buy some if the price is still right for them.

[cryptrol]

I am completely confused  (did not take much I know  )

gridseed.com shows the unit at 60KHs, the youtube video after a few min show's it peek at 41KHs, but the Gridseed GC3355 5 chip shows a 300KHs in LTC, Can someone brake this down for me please? What is 0.39BTC actually paying for?

Also, Is this a LTC only or any scrypt coin? I would do a few units if it works on other coins too.

The miner can operate in two modes BTC + LTC hashing or LTC only hashing.

If used in LTC only mode it can hash at 300kh/s if you are doing BTC (10Gh/s) + LTC then the LTC hash goes down to 60kh/s .

The device is not obviously tied to LTC, since scrypt is used by most of the clones appeared lately, and when the software connects to the pool it doesn't know for which coin it is hashing.

[Girhes]

The miner can operate in two modes BTC + LTC hashing or LTC only hashing.

Three modes actually - sha only, scrypt only and dual.

What is 0.39BTC actually paying for?

If used in LTC only mode it can hash at 300kh/s if you are doing BTC (10Gh/s) + LTC then the LTC hash goes down to 60kh/s .

The manufacturer specified each chip should do 1.6GH nominal / 2.25GH peak sha only, 60KH nominal / 70KH peak scrypt only, 500MH sha + 40KH scrypt in dual mode.

This group buy is for 5chip units, you get one of those for 0.415 with the following (original) specification:

- sha only: ~10GH @ 52W
- scrypt only: 300-350KH @ 8W
- dual mode: ~2.5GH sha + ~200KH scrypt @ 60W

Lightningasic also has a firmware which could run the chips at 4-500KH in scrypt only mode, but only a screenshot has been posted yet.

[solidminds]

How about customs an CE mark when shipping to EU?

[cryptrol]

This group buy is for 5chip units, you get one of those for 0.415 with the following (original) specification:
- sha only: ~10GH @ 52W
- scrypt only: 300-350KH @ 8W
- dual mode: ~2.5GH sha + ~200KH scrypt @ 60W

See my post above, the information quoted there is from a message I received today from the manufacturer (gridseed.com). It says 20/25W of power for scrypt mode :

https://bitcointalk.org/index.php?topic=446593.msg5096050#msg5096050

[atari02]

I have 2 sets of 10 orbs (each with 5 gridseed chips) that was delivered from China on 26th January and been hashing since then.

At stock speeds of 700mhz in single LTC mode a set of 10 can do about 2.8 MH/s according to the pools. You can't really get much hashing info from the controller or their forked minerd in win/linux. In dual mode I get 2 MH/s and 120 GH/s for btc. I have overclocked mine to 850 after pulling them apart and putting artic cooling on all 5 chips in each orb and firmware update. At the overclocked speed I get about 3.5 MH/s in single LTC mode. In dual I get 2.5 MH/s and 140 GH/s. In single mode according to my killawatt a set of 10 is pulling 120w overclocked and dual 620w. Single LTC mode is really stable but dual keeps freezing a few times a day and require reboot. I only run them in single LTC mode now.

[cryptrol]

I have 2 sets of 10 orbs (each with 5 gridseed chips) that was delivered from China on 26th January and been hashing since then.
...

Thanks, that was really helpful. Then the manufacturer is giving very rough estimates for power consumption.

[squall1066]

The miner can operate in two modes BTC + LTC hashing or LTC only hashing.

Three modes actually - sha only, scrypt only and dual.

What is 0.39BTC actually paying for?

If used in LTC only mode it can hash at 300kh/s if you are doing BTC (10Gh/s) + LTC then the LTC hash goes down to 60kh/s .

The manufacturer specified each chip should do 1.6GH nominal / 2.25GH peak sha only, 60KH nominal / 70KH peak scrypt only, 500MH sha + 40KH scrypt in dual mode.

This group buy is for 5chip units, you get one of those for 0.415 with the following (original) specification:

- sha only: ~10GH @ 52W
- scrypt only: 300-350KH @ 8W
- dual mode: ~2.5GH sha + ~200KH scrypt @ 60W

Lightningasic also has a firmware which could run the chips at 4-500KH in scrypt only mode, but only a screenshot has been posted yet.

Right this makes more sence to me     Was not sure about what modes the unit was capable of.

So in the video he was "duel mode" mining hence the 41KHs of scrypt per unit.

This sounds like a good deal for the 5 chip unit, 10 units would be around 4.15 coins and get you 3MHs for only 80w.

Are there any other reviews out there? I understand there has been some shipped out to members here for a review of product.