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Topic: BFL releases actual specs. ACTUAL SPECS! - page 2. (Read 4430 times)

hero member
Activity: 742
Merit: 500
September 30, 2012, 02:55:06 AM
#10
The SC single board rendering that BFL released had 8 sha256 chips.  I assume the jalapeno will have 1.  It it even more strange now that the single gets more hash rate out of each chip.  The single is now doing 7.5Gh/s/chip compared to the jalapeno's 4.5Gh/s/chip, but they are equally energy efficient.

This announcement is probably in response to bASIC's announcement.  It doesn't increase my confidence in BFL as if they were scamming it would also make sense to make this kind of announcement.  Pictures of the actual products and working demos would be nice...

I don't have pics or working demos for you, but I can tell you why the jally is only doing 4.5gh/s while the single is getting 7.5gh/s per chip - they didn't want to add a power brick. This limits them to the 5 watts they can reasonably expect to pull from a USB port (either a 1000ma port or using a dual USB adapter with 500ma ports) Assuming they had 7.5 watts to work with I'd bet the jally could pull 7.5 GH/s but it would then require a power adapter.
hero member
Activity: 840
Merit: 1000
September 30, 2012, 02:52:57 AM
#9
The SC single board rendering that BFL released had 8 sha256 chips.  I assume the jalapeno will have 1.  It it even more strange now that the single gets more hash rate out of each chip.  The single is now doing 7.5Gh/s/chip compared to the jalapeno's 4.5Gh/s/chip, but they are equally energy efficient.

This announcement is probably in response to bASIC's announcement.  It doesn't increase my confidence in BFL as if they were scamming it would also make sense to make this kind of announcement.  Pictures of the actual products and working demos would be nice...
sr. member
Activity: 350
Merit: 250
Trust me, these default swaps will limit the risks
September 30, 2012, 02:39:30 AM
#8
If these performance claims are true then the bitcoin network will be unbelievably secure and we would more than likely see thousands of terahashes before the 12.5 reward half.
hero member
Activity: 742
Merit: 500
hero member
Activity: 742
Merit: 500
September 30, 2012, 02:31:23 AM
#6
Can't really blame them if they deliver more than was promised. It just seems weird that the Jalapeno only gets a ~29% increase, while the Single and Minirig both get 50%.

Power consumption, friend, power consumption.

Say before they were thinking their numbers would let them pull off < 2.5 watts, that would let them run off a single USB port without having to worry about whether your port is a 500ma or 1000ma port, without going to the double-plug USB cables or without having to think about USB 3.0 compatibility. With the upgrade they threw the old 2.5 watt max out the window and went to the most you can possibly pull from a USB 2.0 port if it's new or if you have a double cable, 5 watts. I'm guessing they could probably clock it way higher if the power and heating were available, but they're limited by USB power since they don't want to go to wall adapters.
hero member
Activity: 535
Merit: 500
September 30, 2012, 02:30:59 AM
#5
 1Gh per watt? Yeah, right.
sr. member
Activity: 350
Merit: 250
Trust me, these default swaps will limit the risks
September 30, 2012, 02:29:37 AM
#4
Can't really blame them if they deliver more than was promised. It just seems weird that the Jalapeno only gets a ~29% increase, while the Single and Minirig both get 50%.

Well, from what I can gather from the article it all has to do with the power. If you notice the trend is 1 gh/s per watt. Therefore the total max watts on the jalepeno is 4.5 because that is the maximum output for dual usb 2.0 outputs. Crazy hashrates/watts either way...very interesting futureahead of us.
donator
Activity: 1064
Merit: 1000
September 30, 2012, 02:26:27 AM
#3
Can't really blame them if they deliver more than was promised. It just seems weird that the Jalapeno only gets a ~29% increase, while the Single and Minirig both get 50%.
This is in fact what happens in almost all chip production.
Take for example 6950 and 6970 they are the same chip yet they perform differently this is due to that the better performing chips becomes the 6970 while the worse performing becomes the 6950.
Probably the same is true for the BFLS, maybe the good chips becomes Singles and minirigs while the worse performing becomes singles.
Just a guess.
//DeaDTerra
sr. member
Activity: 658
Merit: 250
September 30, 2012, 02:15:35 AM
#2
Can't really blame them if they deliver more than was promised. It just seems weird that the Jalapeno only gets a ~29% increase, while the Single and Minirig both get 50%.
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