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Topic: Can I get some clarification on this BFL product? (Read 4481 times)

legendary
Activity: 1260
Merit: 1000
The problem with kibi, mebi, gibi, etc... is that it will likely never achieve widespread adoption in US English (at the very least) because the phonemes used are very close to what us Americans perceive as "baby talk."  If they had gone with a less offensive sounding set of prefixes, they'd have likely had wider adoption by now.  Not that I disagree with the sentiment though.

legendary
Activity: 3038
Merit: 1660
lose: unfind ... loose: untight
Further, all accredited standards organizations with which I am familiar (ANSI, BSI, IEC, ISO, NIST, etc...) are unified in stating that (e.g.) kilo is a prefix _always_ meaning 1000 (10^3) and _never_ meaning 1024 (2^10). It matters not one whit whether or not one is discussing bytes or onions.

Yes, the terms kilo, mega, giga, etc. have been MISapplied in the computer industry for several decades. And it was once accepted practice. No longer.

Using these kilo, et al prefixes to refer to 10^(n*3) is an anachronism that perpetuates a needless ambiguity, and must cease - before it kills again.

You want shorthand for 2^(n*10), you use kibi, mebi, gibi, etc.
newbie
Activity: 17
Merit: 0
Couldn't help it. 5Gh/s is not 5000 Mh/s. Rather it is 5120Mh/s. Basic computer science:

1 Bit = Binary Digit
8 Bits = 1 Byte
1024 Bytes = 1 Kilobyte
1024 Kilobytes = 1 Megabyte
1024 Megabytes = 1 Gigabyte
1024 Gigabytes = 1 Terabyte

If you wanted to be correct, you should have used Kibibytes, Mebibytes and Gibibytes instead. What you have listed are SI prefixes of measure, which are always based on powers of ten, not two.
cp1
hero member
Activity: 616
Merit: 500
Stop using branwallets
It's such a shame that computer people use Mega and Giga so incorrectly -- leads to people like Balthozar thinking they know everything.  I'm sure one day some self-proclaimed know it all will incorrectly supply 2^20 W instead of 1e6 W to some poor device.
full member
Activity: 238
Merit: 100
Couldn't help it. 5Gh/s is not 5000 Mh/s. Rather it is 5120Mh/s. Basic computer science:

Grin
You know this is 1st gen. BFL equipment, though, right?  So 5 Ghps could translate to 6.1, or then again, 4.7.  Either way, of the 10 types of people in the world, who understand binary or don't, I suspect your one of those.
legendary
Activity: 1190
Merit: 1000
Couldn't help it. 5Gh/s is not 5000 Mh/s. Rather it is 5120Mh/s. Basic computer science:

1 Bit = Binary Digit
8 Bits = 1 Byte
1024 Bytes = 1 Kilobyte
1024 Kilobytes = 1 Megabyte
1024 Megabytes = 1 Gigabyte
1024 Gigabytes = 1 Terabyte

Wrong! Hash has nothing to do with byte! Therefore, 5 GH/s = 5000 MH/s!

This is correct.
When we talk about hashing, we are talking about frequency (each hash = 1 cycle), not bytes. In frequency measurements, 1 MHz = 1000000 hertz. 1 GHz = 1000000000 hertz. So 5 Gigahashes per second is hashing with a frequency of 5 billion times a second.  Grin
cp1
hero member
Activity: 616
Merit: 500
Stop using branwallets
I'm sure mega and giga are SI prefixes in this case, not the stupid made up byte prefixes used in hard drives.
sr. member
Activity: 389
Merit: 250
Jalapeño is very spicy for summer dining. jajajjaja summer before had been very good, spicy spicy spicy now
newbie
Activity: 56
Merit: 0
Am I incorrect in thinking that 5 GH/s is 5000 MH/s?
Yes

At $274 (assuming BFL ever gets their shit together) isn't that an excellent deal?
Yes, it is awesome deal. But BFL is constantly delaying delivery date, so their promises cannot be trusted. Nobody knows when this product will be shipping.
Also, new orders will be processed and shipped only after older orders. It can take additional months for your new order to be processed and shipped.

Also, it says it needs to be plugged into a host computer. What part of the host computer does it draw on?
It is plugged to USB, but needs to be additionally plugged into A/C power socket.
sr. member
Activity: 452
Merit: 250
Couldn't help it. 5Gh/s is not 5000 Mh/s. Rather it is 5120Mh/s. Basic computer science:

1 Bit = Binary Digit
8 Bits = 1 Byte
1024 Bytes = 1 Kilobyte
1024 Kilobytes = 1 Megabyte
1024 Megabytes = 1 Gigabyte
1024 Gigabytes = 1 Terabyte

Please see this article: http://en.wikipedia.org/wiki/Mebibyte
newbie
Activity: 50
Merit: 0
Couldn't help it. 5Gh/s is not 5000 Mh/s. Rather it is 5120Mh/s. Basic computer science:

1 Bit = Binary Digit
8 Bits = 1 Byte
1024 Bytes = 1 Kilobyte
1024 Kilobytes = 1 Megabyte
1024 Megabytes = 1 Gigabyte
1024 Gigabytes = 1 Terabyte

Wrong! Hash has nothing to do with byte! Therefore, 5 GH/s = 5000 MH/s!
member
Activity: 98
Merit: 10
Couldn't help it. 5Gh/s is not 5000 Mh/s. Rather it is 5120Mh/s. Basic computer science:

1 Bit = Binary Digit
8 Bits = 1 Byte
1024 Bytes = 1 Kilobyte
1024 Kilobytes = 1 Megabyte
1024 Megabytes = 1 Gigabyte
1024 Gigabytes = 1 Terabyte
hero member
Activity: 609
Merit: 500
Buy with credit card. In 3 months it will be clear if this deal is good or not. Request a refund through your credit card if the outlook will be bad.

yeah my main regret is that I paid with bitcoins.  At the value they were at the time, I spent 26 bitcoins for 2 Jalapeños.   I wish I had paid in fiat.

 
C'est la vie!
cp1
hero member
Activity: 616
Merit: 500
Stop using branwallets
It draws 30W from an external power brick, like a laptop uses.  It doesn't get power off USB.
member
Activity: 106
Merit: 10
Buy with credit card. In 3 months it will be clear if this deal is good or not. Request a refund through your credit card if the outlook will be bad.
legendary
Activity: 2926
Merit: 1386
I've got a Jalapeno on order since September 2012.  The product was promised to be shipping in October, then November, then February, and now in April we still have no dates and BFL is having a lot of problems with power consumption.  Not good news for a USB based product. 

BFL has preorders since June 2012 to build, and they haven't built a fully working, ready to ship Jalapeno yet (as far as has been publically announced).  You may be waiting many months for your order to ship, and difficulty is likely to be dozens, if not hundreds of times higher than it is today.

Victor Alpha Papa Oscar Romeo Whiskey Alpha Romeo Echo

LOL
sr. member
Activity: 392
Merit: 250
http://casinobitco.in/ A+ customer support
So I've been seeing a lot of stuff about how BFL hasn't shipped people's ASICs yet. This thread isn't about that.
I just want some info about this:
https://products.butterflylabs.com/homepage/5-gh-s-bitcoin-miner.html

Am I incorrect in thinking that 5 GH/s is 5000 MH/s?
At $274 (assuming BFL ever gets their shit together) isn't that an excellent deal?

Also, it says it needs to be plugged into a host computer. What part of the host computer does it draw on?

basically it just draws small amounts of power and bandwidth.

comparatively it is a strong miner. it used to be 120$ if i remember correctly.

it is what we all thought: wow what a deal! 5gh is 5000mh.

at this point though, you don't get a really good place in line so i would wait and see how fast bfl is shipping stuff out if they start shipping at all. it would be unsound of you to not take that into account. if bfl starts shipping stuff out slow, it is almost as bad as not shipping at this rate, because at 300 units a day it will take them almost a year to get out just the preorders.

i would sit and wait. other opportunities are coming. in 10 weeks about we will have avalon chips on US soil.
legendary
Activity: 1764
Merit: 1006
Some facts about the Japolino:

Jalapeno - 5V DC at 900 mA, using dual USB 2.0 or single USB 3.0*

-Using USB 3.0 will work but at reduced speed is only one USB 2.0 port is used or insufficient power is supplied. A powered USB hub may be required if your USB ports do not supply sufficient power.

and you'll have a nice little toaster for your bagel...or bread.
jml
full member
Activity: 238
Merit: 100
Some facts about the Japolino:

Jalapeno - 5V DC at 900 mA, using dual USB 2.0 or single USB 3.0*

-Using USB 3.0 will work but at reduced speed is only one USB 2.0 port is used or insufficient power is supplied. A powered USB hub may be required if your USB ports do not supply sufficient power.
legendary
Activity: 1190
Merit: 1000
So I've been seeing a lot of stuff about how BFL hasn't shipped people's ASICs yet. This thread isn't about that.
I just want some info about this:
https://products.butterflylabs.com/homepage/5-gh-s-bitcoin-miner.html

Am I incorrect in thinking that 5 GH/s is 5000 MH/s?
At $274 (assuming BFL ever gets their shit together) isn't that an excellent deal?

Also, it says it needs to be plugged into a host computer. What part of the host computer does it draw on?

Yes. Great deal. Totally. See my sig.
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