Block Erupter: Dedicated Mining ASIC Project (Open for Discussion) - page 7.

phantastisch

legendary

Activity: 2271

Merit: 1363

Quote from: flynn on September 22, 2012, 07:28:50 AM

Quote from: friedcat on September 22, 2012, 06:17:22 AM

Quote from: flynn on September 22, 2012, 06:11:53 AM

Quote from: friedcat on September 22, 2012, 12:32:59 AM

Core Frequency: 335 MHz
Core Frequency Range: 255-378 MHz

Do I understand this correctly if I conclude that one chip will mine @ 335MH/s ? or 378MH/s if it's a good one ?

Yes.

255-378 MHz is the result of the back-end simulation under 1.2V. If you do an over-voltage, it will probably be significantly higher, but the stability is hard to say. Exactly how high a frequency we could push them to, could only be answered when the chips are out.

Did you plan to sell some ? In such case do you have a price grid yet ?

They are Part of asicminer/bitfountain and will be sold in the near future.

flynn

hero member

Activity: 728

Merit: 540

Quote from: friedcat on September 22, 2012, 06:17:22 AM

Quote from: flynn on September 22, 2012, 06:11:53 AM

Quote from: friedcat on September 22, 2012, 12:32:59 AM

Core Frequency: 335 MHz
Core Frequency Range: 255-378 MHz

Do I understand this correctly if I conclude that one chip will mine @ 335MH/s ? or 378MH/s if it's a good one ?

Yes.

255-378 MHz is the result of the back-end simulation under 1.2V. If you do an over-voltage, it will probably be significantly higher, but the stability is hard to say. Exactly how high a frequency we could push them to, could only be answered when the chips are out.

Did you plan to sell some ? In such case do you have a price grid yet ?

friedcat

donator

Activity: 848

Merit: 1005

Quote from: flynn on September 22, 2012, 06:11:53 AM

Quote from: friedcat on September 22, 2012, 12:32:59 AM

Core Frequency: 335 MHz
Core Frequency Range: 255-378 MHz

Do I understand this correctly if I conclude that one chip will mine @ 335MH/s ? or 378MH/s if it's a good one ?

Yes.

255-378 MHz is the result of the back-end simulation under 1.2V. If you do an over-voltage, it will probably be significantly higher, but the stability is hard to say. Exactly how high a frequency we could push them to, could only be answered when the chips are out.

flynn

hero member

Activity: 728

Merit: 540

Quote from: friedcat on September 22, 2012, 12:32:59 AM

Core Frequency: 335 MHz
Core Frequency Range: 255-378 MHz

Do I understand this correctly if I conclude that one chip will mine @ 335MH/s ? or 378MH/s if it's a good one ?

or is there more than one stack in each chip ?

friedcat

donator

Activity: 848

Merit: 1005

Quote from: nedbert9 on September 22, 2012, 04:58:56 AM

Can we assume that additional sacrifices in hashrate were made to accommodate the smaller package and reduce heat issues?

Yes. We did sacrifice some hashrate per area, that is, hashrate per wafer. But the compromise is worth it, because the loss is not significant, and because we have gained much lower ir drop and much better power efficiency.

friedcat

donator

Activity: 848

Merit: 1005

Quote from: lame.duck on September 22, 2012, 04:15:48 AM

Isn't the big pad connected to GND (so the number of power pads should be 19)?

Yes. Thanks for clarification. We use the standard QFN way to package.
So there's a big pad in the middle, making the total number of pads 19.

nedbert9

sr. member

Activity: 252

Merit: 250

Inactive

Quote from: friedcat on September 22, 2012, 12:32:59 AM

Update

...

Power Consumption: 4.2 J/GHash

...

Packaged Chip Size: 6 mm x 6 mm

As a past ASICMINER shareholder, for about an hour

, I'm simply curious about the changes within the specifications.

If the wattage has been lowered to from ~8 to 4.2 and the package area reduced from an estimated 21mm sq to 6mm sq. can we assume that additional sacrifices in hashrate were made to accommodate the smaller package and reduce heat issues?

lame.duck

legendary

Activity: 1270

Merit: 1000

Isn't the big pad connected to GND (so the number of power pads should be 19)?

friedcat

donator

Activity: 848

Merit: 1005

Quote from: niko on September 22, 2012, 02:00:45 AM

How reliable is the power consumption figure?

It's the back-end simulation result with 1.2V and 335MHz.
It depends on the actual voltage (1.2 typical, over-voltage and under-voltage is OK), the frequency you set for the chips, and the how well each individual chip could perform (random factors when producing).

niko

hero member

Activity: 756

Merit: 501

There is more to Bitcoin than bitcoins.

How reliable is the power consumption figure?

kaerf

hero member

Activity: 631

Merit: 500

awesome! finally some real technical info from an ASICs producer.

friedcat

donator

Activity: 848

Merit: 1005

Update

Chip Specification
Technology Summary:
  130 nm
  1 Ploy
  6 Metal
  1 Top Metal
  Logic Process
Core Voltage: 1.2 V
I/O Voltage: 3.3 V
Core Frequency: 335 MHz
Core Frequency Range: 255-378 MHz
PLL Multiplier: 28
Power Consumption: 4.2 J/GHash
Number of Pads: 40
  22 Data
  18 Power
Package Type: QFN40
Packaged Chip Size: 6 mm x 6 mm

Chip Interface
Data Pins (22 in total):

clk                    i
soft-reset             i
reset                  i
cs                     i
addr[6]                i
data[8]                i/o
w_valid                i
w_allow                o
r_allow                o
r_req                  i

Address Allocation:

0-31    writing midstate
32-43   writing data
44-47   reading nonce

mrb

legendary

Activity: 1512

Merit: 1028

burger

full member

Activity: 195

Merit: 100

How is this project progressing now?

It would be nice to know if there is any performance or prower savings between 130nm and 65nm?

Lethos

sr. member

Activity: 476

Merit: 250

Keep it Simple. Every Bit Matters.

Quote from: Comepradz on August 19, 2012, 06:18:33 PM

Hi, Lately I came across this page >> https://en.bitcoin.it/wiki/Hardfork_Wishlist#Major_structural_changes << and there's something I want to ask regarding this:

Quote

Switch to block hashing algorithm secure against block withholding attacks.

Will it possibly disrupt Block Erupter's algorithm?

It's mostly a Cryptographic changes, that would be an issue, but as long as it still uses SHA256, it should be possible to still use it, minor software (mining) changes needed could cope maybe?

Comepradz

newbie

Activity: 49

Merit: 0

Hi, Lately I came across this page >> https://en.bitcoin.it/wiki/Hardfork_Wishlist#Major_structural_changes << and there's something I want to ask regarding this:

Quote

Switch to block hashing algorithm secure against block withholding attacks.

Will it possibly disrupt Block Erupter's algorithm?

Carlton Banks

legendary

Activity: 3430

Merit: 3080

My apologies, I didn't make myself clear.

Your IPO terms/information in this thread states that you will mine with the initial batch of hardware produced. It is not inconceivable that some changes to the final device will take place between the first batch of boards and the batch that you actually deliver to retail customers. So, your performance photographs will be of what are effectively prototype devices, not of the retail device. Is this correct, or have I misunderstood your terms?

DutchBrat

hero member

Activity: 868

Merit: 1000

I say let the numbers speak for themselves (i.e. the amount of BTC mined in the 1st 24hrs Cheesy

)

No need for a testnet demonstration....

lame.duck

legendary

Activity: 1270

Merit: 1000

Mining in the testnet with such a power would be some sort of posing (or if you want call it 'marketing'). 12 Thash of mining power should have a noticable impact on global hashing power, even if a lot of GPU-miners stops mining.

friedcat

donator

Activity: 848

Merit: 1005

Quote from: Carlton Banks on August 18, 2012, 11:18:33 PM

@friedcat

Will you be testing the ASIC processor/board out on the bitcoin Testnet to demonstrate it's hashing power to the public prior to release?

What in my mind has been directly mining on the main blockchain and relay it with the pictures of mining devices to the public. Would you please elaborate the advantages of doing it first on the testnet? Thanks.

Topic: Block Erupter: Dedicated Mining ASIC Project (Open for Discussion) - page 7. (Read 58642 times)