[BFL 4GHs chips Group buy] Interest check @ 100 chips x $75, 5 chip min US ONLY! - page 2.

Bicknellski

hero member

Activity: 924

Merit: 1000

Quote from: TheSwede75 on June 11, 2013, 09:14:26 AM

Quote from: atcsecure on June 11, 2013, 09:11:27 AM

I would be interested in 5 chips possibly, we need to see the PCB details :-)

As of now there are no PCB details available. Though with delivery in 100-days there is no doubt that DYI projects etc. will be available well before chip delivery. I will also work on securing building service so that chips can be seamlessly turned into miners upon delivery.

-1 No thanks.

TheSwede75

full member

Activity: 224

Merit: 100

Quote from: PuertoLibre on June 11, 2013, 10:40:00 AM

Can you find out if this is a possibility?

Edit: Any power specs guarantees? (Don't want the bad lot that consumes 6 watt per Gh/s.)

According to order page:

Power consumption: 3.2 Watt per GH/s

TheSwede75

full member

Activity: 224

Merit: 100

Quote from: dwdoc on June 11, 2013, 10:27:02 AM

I would probably purchase 25 chips.
Would you consider accepting escrow for the 50% not due until delivery?

I considered that but I think that considering my record, feedback and previous group-purchases AND the fact that I would have to turn BTC-into USD to aleviate the risk of a fall in BTC price (that I would have to cover personally if I did not) I think Escrow may just add to the complexity of the buy.

Of course I will post all possible proof of the order, first 50% down etc. I just can't take the risk of a BTC crash happening while over 30 BTC are in escrow. This would possibly jeopardize the entire group buy as it would be possible I would not have funds to cover the remaining 50% should this happen.

I hope this makes sense.

FuzzyThunder

newbie

Activity: 18

Merit: 0

I might be interested depending on how much it would cost to get them assembled into a working PCB.

TheSwede75

full member

Activity: 224

Merit: 100

Quote from: PuertoLibre on June 11, 2013, 10:34:16 AM

Quote from: dwdoc on June 11, 2013, 10:30:40 AM

Quote from: PuertoLibre on June 11, 2013, 10:18:52 AM

Are the chip lots marked clearly as Grade A, B, C, D or are they selling them blindly and we get what we get?

How do you guarantee we will get Grade A if we pay 75$ per chip for Grade A? (Instead of Grade D's mixed in)

BFL is not charging $99 for Grade A chips (their original proposal). They are charging a discounted $75 per chip for a mixed batch so they don't have to sort them. They are not labelled.

Are the ratio's of Grade A's to D's at least guaranteed?

It would kinda suck to end up with a ton of Duds.

I would strive to (if marked on arrival) ship users chips according to the percentage distribution BFL ships guaranteeing at least 4 GH/s per chip, per 5-chip order unit. Aka. I would strive for fair distribution of hash rate across all group order members.

PuertoLibre

legendary

Activity: 1890

Merit: 1003

Can you find out if this is a possibility?

Edit: Any power specs guarantees? (Don't want the bad lot that consumes 6 watt per Gh/s.)

TheSwede75

full member

Activity: 224

Merit: 100

Quote from: PuertoLibre on June 11, 2013, 10:18:52 AM

Are the chip lots marked clearly as Grade A, B, C, D or are they selling them blindly and we get what we get?

How do you guarantee we will get Grade A if we pay 75$ per chip for Grade A? (Instead of Grade D's mixed in)

I guarantee nothing reg. Chip quality that BFL has not stated. The process I would use would be blind where I ship a random amount of each grade (based off BFL % for Grade A-D) by simply packaging and sending chips without myself knowing the grade (I assume that BFL will send them un-marked). If chips ARE indeed marked I would select chips for each purchaser as well as possibly to ensure fairness and that each chip batch of 5 or more contains chips of grades that reflect the statement on the Butterfly Labs order page (60% Grade A etc).

PuertoLibre

legendary

Activity: 1890

Merit: 1003

Quote from: dwdoc on June 11, 2013, 10:30:40 AM

Quote from: PuertoLibre on June 11, 2013, 10:18:52 AM

Are the chip lots marked clearly as Grade A, B, C, D or are they selling them blindly and we get what we get?

How do you guarantee we will get Grade A if we pay 75$ per chip for Grade A? (Instead of Grade D's mixed in)

BFL is not charging $99 for Grade A chips (their original proposal). They are charging a discounted $75 per chip for a mixed batch so they don't have to sort them. They are not labelled.

Are the ratio's of Grade A's to D's at least guaranteed?

It would kinda suck to end up with a ton of Duds.

dwdoc

legendary

Activity: 966

Merit: 1000

- - -Caveat Aleo- - -

Quote from: PuertoLibre on June 11, 2013, 10:18:52 AM

Are the chip lots marked clearly as Grade A, B, C, D or are they selling them blindly and we get what we get?

How do you guarantee we will get Grade A if we pay 75$ per chip for Grade A? (Instead of Grade D's mixed in)

BFL is not charging $99 for Grade A chips (their original proposal). They are charging a discounted $75 per chip for a mixed batch so they don't have to sort them. They are not labelled.

dwdoc

legendary

Activity: 966

Merit: 1000

- - -Caveat Aleo- - -

I would probably purchase 25 chips.
Would you consider accepting escrow for the 50% not due until delivery?

PuertoLibre

legendary

Activity: 1890

Merit: 1003

Are the chip lots marked clearly as Grade A, B, C, D or are they selling them blindly and we get what we get?

How do you guarantee we will get Grade A if we pay 75$ per chip for Grade A? (Instead of Grade D's mixed in)

PuertoLibre

legendary

Activity: 1890

Merit: 1003

Quote from: TheSwede75 on June 11, 2013, 09:54:40 AM

Quote from: PuertoLibre on June 11, 2013, 09:49:10 AM

Quote from: TheSwede75 on June 11, 2013, 09:46:56 AM

Quote from: PuertoLibre on June 11, 2013, 09:39:22 AM

How much is it now for the Grade B through D chips? (Any specs released by BFL on those grades?)

They lowered the price across the board and are now only guaranteeing 4 GH/s instead of using the 'hand picked/per chip' approach.

I don't understand what that means.

4Gh/s guarantee even for Grade D chips?

You have to explain it to me or get Josh to clear this up.

From what I can tell ALL chips are guaranteed to run at 3 GH/s+ according to:

"Chip grades: Chips come in four grades of performance. Chips are sold in mixed grade lots. A grade has 16 engines, B grade has 15 engines, C grade has 14 engines and D grade has no less than 12 engines. All chips run at a minimum of 250 mhz. Higher grade chips will run up to 294mhz. The percentage distribution in each lot is 60% Grade A, 20% Grade B, 15% Grade C and 5% Grade D." from link @ https://products.butterflylabs.com/65nm-asic-bitcoin-mining-chip.html

Since each chip has a minimum of 12 cores, IF a chip happens to be of lowest quality (12 cores) and also of the lowest clock speed @ 250 mhz it would run @ 3GHs. Though I find it unlikely, since my guess is that less cores, would allow a chip to dissipate more heat and likely run at close to or at the highest clock speed of 290 mh/s+ giving even class-D chips around 3.4 gh/s.

Best case scenario would be a chip of class A with 16 cores @ 294 mh/s running at 4.7 GH/s.

Since chip distribution is 60% Grade-A and only 5% grade D it seems exceptionally unlikely even with a 5 chip order that the average hash rate would come out to less than 4 GH/s. It seems statistically even a random selection would produce OVER 4 GH/s.

A couple of questions:

How can they give us info on what the spreads are of Grade A through D if they haven't yet fabbed the new chips? (Isn't it 100 days away?)

Or are they giving us the old lots they already "have" fabbed that are meant for pre-orders? (The ones with power problems)

TheSwede75

full member

Activity: 224

Merit: 100

Quote from: PuertoLibre on June 11, 2013, 09:49:10 AM

Quote from: TheSwede75 on June 11, 2013, 09:46:56 AM

Quote from: PuertoLibre on June 11, 2013, 09:39:22 AM

How much is it now for the Grade B through D chips? (Any specs released by BFL on those grades?)

They lowered the price across the board and are now only guaranteeing 4 GH/s instead of using the 'hand picked/per chip' approach.

I don't understand what that means.

4Gh/s guarantee even for Grade D chips?

You have to explain it to me or get Josh to clear this up.

From what I can tell ALL chips are guaranteed to run at 3 GH/s+ according to:

"Chip grades: Chips come in four grades of performance. Chips are sold in mixed grade lots. A grade has 16 engines, B grade has 15 engines, C grade has 14 engines and D grade has no less than 12 engines. All chips run at a minimum of 250 mhz. Higher grade chips will run up to 294mhz. The percentage distribution in each lot is 60% Grade A, 20% Grade B, 15% Grade C and 5% Grade D." from link @ https://products.butterflylabs.com/65nm-asic-bitcoin-mining-chip.html

Since each chip has a minimum of 12 cores, IF a chip happens to be of lowest quality (12 cores) and also of the lowest clock speed @ 250 mhz it would run @ 3GHs. Though I find it unlikely, since my guess is that less cores, would allow a chip to dissipate more heat and likely run at close to or at the highest clock speed of 290 mh/s+ giving even class-D chips around 3.4 gh/s.

Best case scenario would be a chip of class A with 16 cores @ 294 mh/s running at 4.7 GH/s.

Since chip distribution is 60% Grade-A and only 5% grade D it seems exceptionally unlikely even with a 5 chip order that the average hash rate would come out to less than 4 GH/s. It seems statistically even a random selection would produce OVER 4 GH/s.

PuertoLibre

legendary

Activity: 1890

Merit: 1003

Quote from: TheSwede75 on June 11, 2013, 09:46:56 AM

Quote from: PuertoLibre on June 11, 2013, 09:39:22 AM

How much is it now for the Grade B through D chips? (Any specs released by BFL on those grades?)

They lowered the price across the board and are now only guaranteeing 4 GH/s instead of using the 'hand picked/per chip' approach.

I don't understand what that means.

4Gh/s guarantee even for Grade D chips?

You have to explain it to me or get Josh to clear this up.

TheSwede75

full member

Activity: 224

Merit: 100

Quote from: PuertoLibre on June 11, 2013, 09:39:22 AM

How much is it now for the Grade B through D chips? (Any specs released by BFL on those grades?)

They lowered the price across the board and are now only guaranteeing 4 GH/s instead of using the 'hand picked/per chip' approach.

PuertoLibre

legendary

Activity: 1890

Merit: 1003

How much is it now for the Grade B through D chips? (Any specs released by BFL on those grades?)

TheSwede75

full member

Activity: 224

Merit: 100

Quote from: PuertoLibre on June 11, 2013, 09:27:08 AM

They also [apparently] expect the board makers to create their own firmware to run the chips.

Kinda crazy!

With the drop in price (from $90+ to $75) per chip and the fact that they DO have functioning miners running the chips. I expect there to be a wide array of DYI projects and miner manufacturing offers well in time for chip shipment though. It took avalon DIY projects just a few weeks from chip announcements to release spec for Klondyke and k64, I would be very surprised if the same is not true for the BFL chips especially since there are sample chips floating around and it is very much in the best interest of BFL to release specs to boost chip sales.

PuertoLibre

legendary

Activity: 1890

Merit: 1003

They also [apparently] expect the board makers to create their own firmware to run the chips.

Kinda crazy!

TheSwede75

full member

Activity: 224

Merit: 100

Quote from: atcsecure on June 11, 2013, 09:11:27 AM

I would be interested in 5 chips possibly, we need to see the PCB details :-)

As of now there are no PCB details available. Though with delivery in 100-days there is no doubt that DYI projects etc. will be available well before chip delivery. I will also work on securing building service so that chips can be seamlessly turned into miners upon delivery.

atcsecure

hero member

Activity: 756

Merit: 500

I would be interested in 5 chips possibly, we need to see the PCB details :-)

Topic: [BFL 4GHs chips Group buy] Interest check @ 100 chips x $75, 5 chip min US ONLY! - page 2. (Read 3128 times)