[ANN] Introduction to DualMiner USB (could mine both BTC and LTC) - page 38.

csshih

member

Activity: 96

Merit: 10

Quote from: drmadison on January 22, 2014, 12:56:38 PM

Quote from: dualminer on January 22, 2014, 12:12:25 AM

Here is the latest update. The 1st batch of 50 DualMiner USB has arrived SF Bay Area. We expect to ship out certain samples to our selected reviewers in next few days. Stay in tune!

I'm in the SF bay area. I'd be more than happy to swing by and help verify the existence / functioning of these.

Ditto.

Mitron

newbie

Activity: 58

Merit: 0

Wait, can't you just buy an R9 270X at 425kH/s and an U1 at 1.6GH/s for $300 instead of 3 of these at 120kH/s and 1.5GH/s for $300? I don't understand the advantage of these devices. Maybe at half the price? Looks like Ebay candy to me.

dualminer

newbie

Activity: 59

Merit: 0

To whom interested in the DualMiner USB product, please check our latest update in the 1st page of this topic. Thanks.

philipma1957

legendary

Activity: 4172

Merit: 8075

'The right to privacy matters'

Quote from: Dabs on January 22, 2014, 09:34:12 PM

http://mall.diginforce.com/goods.php?id=37

Although I do not understand chinese, and maybe it is a different product.

Using chrome /google it is the controller it appears you need this and a usb hub and the dual mining usb sticks. the translation reads this allows you to not use a pc. but the chip does not hash much in terms of ltc 40kh along with 50mh btc or 70kh alone so lets say it is 55kh not 70kh that means a hub of 10 sticks is 550kh almost a hd7950 . so the controller handles 20-30 sticks 1100 to 1650 kh . yeah you save some power but what does 3x 10 port hubs 30 sticks and a controller cost?

Dabs

legendary

Activity: 3416

Merit: 1912

The Concierge of Crypto

http://mall.diginforce.com/goods.php?id=37

Although I do not understand chinese, and maybe it is a different product.

drmadison

full member

Activity: 151

Merit: 110

Quote from: KyrosKrane on January 22, 2014, 10:49:30 AM

First, why is there such a difference between the theoretical stats and the quoted performance, particularly on BTC? And why is the BTC-only mode eliminated?

Second, what software would be able to use this gizmo to dual-mine simultaneously? On their site, they say "Customized Windows software with GUI" but they also mention Linux; and their screenshots are of a command-line miner. Depending on how the software is implemented, it may not be able to run on unusual hardware like a Raspberry Pi or Beaglebone. Custom-developed miners are sometimes less efficient than dedicated software like cgminer or bfgminer, so we could be giving up precious hashes. Definitely need more info on this front.

Not at all related to this but I'm assuming the lower spec is because of lower power (needs to run off 2.5w total power)

drmadison

full member

Activity: 151

Merit: 110

Quote from: dualminer on January 22, 2014, 12:12:25 AM

Here is the latest update. The 1st batch of 50 DualMiner USB has arrived SF Bay Area. We expect to ship out certain samples to our selected reviewers in next few days. Stay in tune!

I'm in the SF bay area. I'd be more than happy to swing by and help verify the existence / functioning of these.

KyrosKrane

sr. member

Activity: 295

Merit: 250

Quote from: WhiteyZ on January 22, 2014, 09:37:28 AM

Quote from: KyrosKrane on January 22, 2014, 07:57:15 AM

Can these (and other, similar, dual-use devices) mine both BTC and LTC simultaneously? Or is the user (or perhaps mining software) supposed to pick one at a time to mine?

Quote from first page and from the website:

Quote

Hash Rate: Dual Mode: 40KH/s LTC, 500MH/s BTC, or LTC Mode: 70KH/s LTC, BTC Off

Thanks, I missed that on their Web site. But on the first page of this thread, there's no performance info from the OP. I reviewed all posts by the OP, in fact, and he doesn't mention the specs in any of them.

Another poster posted the theoretical stats of the chip they're using:

Quote

 BTC mode up to 2.25G/s BTC Hash Rate, with 2.4W/GHash
 LTC mode up to 60K/s LTC Hash Rate
 Due-Coin mode up to 1.75G/s BTC Hash Rate + 60K/s LTC Hash Rate, or up to 2.25G/s BTC Hash
Rate + 38K LTC Hash Rate

So two things jump out at me:

First, why is there such a difference between the theoretical stats and the quoted performance, particularly on BTC? And why is the BTC-only mode eliminated?

Second, what software would be able to use this gizmo to dual-mine simultaneously? On their site, they say "Customized Windows software with GUI" but they also mention Linux; and their screenshots are of a command-line miner. Depending on how the software is implemented, it may not be able to run on unusual hardware like a Raspberry Pi or Beaglebone. Custom-developed miners are sometimes less efficient than dedicated software like cgminer or bfgminer, so we could be giving up precious hashes. Definitely need more info on this front.

WhiteyZ

newbie

Activity: 49

Merit: 0

Quote from: KyrosKrane on January 22, 2014, 07:57:15 AM

Can these (and other, similar, dual-use devices) mine both BTC and LTC simultaneously? Or is the user (or perhaps mining software) supposed to pick one at a time to mine?

Quote from first page and from the website:

Quote

Hash Rate: Dual Mode: 40KH/s LTC, 500MH/s BTC, or LTC Mode: 70KH/s LTC, BTC Off

fsb4000

legendary

Activity: 1400

Merit: 1000

I wish one for test and review

KyrosKrane

sr. member

Activity: 295

Merit: 250

Can these (and other, similar, dual-use devices) mine both BTC and LTC simultaneously? Or is the user (or perhaps mining software) supposed to pick one at a time to mine?

wunch

newbie

Activity: 49

Merit: 0

Quote from: FalconFly on January 19, 2014, 07:50:05 AM

Just my 2 cents :

- miners have RoHS, FCC and CE Logos -> AFAIK no mining product ever went through all (any?) of these certification processes, as they are expensive and consume way too much time in this fast-moving industry
( we all know time-to-market is literally everything )

ASICMINERS cubes and sticks have these logo's as well but i highly doubt they went through approval so this means nothing. Merely stops it from getting rejected at customs, IIRC BFL did similar as things were being stopped for wrong power cords etc.

demonmaestro

hero member

Activity: 574

Merit: 500

Mining for the hell of it.

Quote from: dualminer on January 22, 2014, 12:12:25 AM

Here is the latest update. The 1st batch of 50 DualMiner USB has arrived SF Bay Area. We expect to ship out certain samples to our selected reviewers in next few days. Stay in tune!

Cant wait to see.
I wish i was one of the lucky ones to get to test.

ipxtreme

sr. member

Activity: 262

Merit: 250

I would like to test one please.

dualminer

newbie

Activity: 59

Merit: 0

Here is the latest update. The 1st batch of 50 DualMiner USB has arrived SF Bay Area. We expect to ship out certain samples to our selected reviewers in next few days. Stay in tune!

cxboyminer

hero member

Activity: 896

Merit: 500

Haven't heard from the user - DualMiner for a while. Anyone receive any usb from them for reviews? Want to make one for my youtube channel!

WinterParker

sr. member

Activity: 356

Merit: 250

Dock.io

Are you finished with production of a substantial amount?

dualminer_3

newbie

Activity: 21

Merit: 0

Quote from: FalconFly on January 19, 2014, 07:50:05 AM

Just my 2 cents :

- miners have RoHS, FCC and CE Logos -> AFAIK no mining product ever went through all (any?) of these certification processes, as they are expensive and consume way too much time in this fast-moving industry
( we all know time-to-market is literally everything )

- miners have one important specification missing -> onboard RAM (Scrypt requires large amounts of RAM as a core design feature, which is the reason they're still limited to CPU/GPU)

I give it a >98% chance of being a fraud.
(after all, there's a ton of eager customers who would like a power-efficient Scrypt ASIC as soon as possible -> lots of potential profit -> lots of potential fraud targets and fraud profit potential)

PS.
What are the odds of a supposedly completely new device with significantly updated components/features having apparently exactly the same shape & dimensions of a Block Erupter ?
Am I the only one looking at what 100% seems like "repainted Block Erupters" in the images ?

just give some comments:

1. The scrypt hash function used by litecoin is just 1024 length, it can be done with on chip SRAM. Just have a look of the scrypt_1024_1_1_256 function in cpuminer and get some idea. GC3355 has on chip sram for scrypt.
2. It's true that this usb miner looks similar with "Block Erupter". But the size is different. Also the heaksink design is slightly different. The logo looks better. :-)
3. Please just wait reviewer's report for more information of Dualminer

Phinnaeus Gage

legendary

Activity: 1918

Merit: 1570

Bitcoin: An Idea Worth Spending

Quote from: FalconFly on January 19, 2014, 07:50:05 AM

Just my 2 cents :

- miners have RoHS, FCC and CE Logos -> AFAIK no mining product ever went through all (any?) of these certification processes, as they are expensive and consume way too much time in this fast-moving industry
( we all know time-to-market is literally everything )

- miners have one important specification missing -> onboard RAM (Scrypt requires large amounts of RAM as a core design feature, which is the reason they're still limited to CPU/GPU)

I give it a >98% chance of being a fraud.
(after all, there's a ton of eager customers who would like a power-efficient Scrypt ASIC as soon as possible -> lots of potential profit -> lots of potential fraud targets and fraud profit potential)

PS.
What are the odds of a supposedly completely new device with significantly updated components/features having apparently exactly the same shape & dimensions of a Block Erupter ?
Am I the only one looking at what 100% seems like "repainted Block Erupters" in the images ?

You see Erupters, whereas I see Drills.

Quote from: Phinnaeus Gage on January 15, 2014, 11:45:43 PM

http://www.dualminer.com/Test-DualMiner_p_17.html (you can also do a Coinbase Test on this page)

BTCDRILL 专注于Avalon 矿机产品解决方案，提供矿机代工，矿机组件
www.btcdrill.com - 960 × 397 - Search by image
BTCDRILL 专注于Avalon 矿机产品解决方案，提供矿机代工，矿机组件 ...

The link is 403 forbidden, hence the above.

It also comes in red:

BTW, that image is no longer available on dualminer.com. Jun Zhu commented that the mybitcoinrig.com site was for testing content (paraphrased) for the dualminer.com site, of which the image above representing a finished product that was for sale.

brucemangy

full member

Activity: 164

Merit: 100

beware : this is an obvious scam.

Previous post is really wise ^^

Topic: [ANN] Introduction to DualMiner USB (could mine both BTC and LTC) - page 38. (Read 114587 times)