Using information from
http://bfl.ptz.ro/ as a guide, on average you see .1TH of network speed per order placed. Since ASIC orders start around 1600 due to upgraded FPGA orders, the then order numbers into the 72,000's indicated over 70,000 potential orders. Simple math gets you from .1TH * 70,000 = 7PH. This did not take into account, as I said, cancelled or refunded orders. It was a guess of the TOTAL ORDERBOOK.
You are assuming that every time the order number increments, it indicates an order than corresponds to a single entry in bfl.ptz.ro worth 100GH/s. Incorrect assumption. We don't know how orders were grouped or what percentage of each device family registered with the list. What everyone could agree on was that mini-rigs were over represented in the data. Also, BFL would assign a number to an order that was never fully processed (payment did not complete), further skewing the numbers. Finally, the order number is probably a primary key in a database, they are not guaranteed to be a monotonically increasing sequence.
Extrapolating the mini-rig orders out smoothly is not a wise assumption. Mini-rig orders are most likely to be from people who have been to both bitcointalk and BFL forums and would be most likely to have encountered the list at bfl.ptz.ro. 1 time Jalapeno orders would be the least likely to have entered their order into the list. Mini-rigs are also a large investment, so the people who ordered them have the most incentive to register on the list to keep BFL honest. Assigning each BFL order number a value of 100GH/s is certainly wildly optimistic.
Finally, BFL is between 15% and 20% of the way through their order book. If your estimate held up, that would indicate that they have already shipped between 1050TH/s and 1400TH/s according to your "guesstimate". This is can be verified as false because the network hash rate is no where near that.
First, I understand quite well that
http://bfl.ptz.ro/ and reality don't mesh, but it was a starting point. I made no claims these were accurate, it was a guess and remains a guess.
You mean like this order number 234234?
4860 2013/07/10 234234 No 1 2 3 4 asdf
or this order?
1073 2012/11/23 100057492 No 2 0 0 15 Blacksheep
Name: BlackSheep
Posts: 9
Activity: 9
Position: Jr. Member
Date Registered: April 06, 2013, 08:28:04 PM
Last Active: May 14, 2013, 11:44:29 PM
Second, I doubt the REALLY big mini-rig buyers listed their orders. According to
http://bfl.ptz.ro/ only 10 minis were bought Day 1 and only 29 by the end of July. It took them 21 shipping days to clear day 1 minis... 1 every other day? Yet they cleared the other 19 in 11 shipping days? I remember reading a rumor that an order for 50 mini's was placed day 1. That would be 3 per shipping day for the day 1's IF TRUE and 2+ per shipping day since (if you add the 2/3's). Makes more sense than 1/2 followed by 2.
So you think there are a massive number of "dark mini-rig orders" that make up the difference between what the data shows and your conclusions.
Sadly, no, BFL is not even 10% of the way through their complete orderbook as I detailed it. You are discounting the fact that their 2 biggest lines are the farthest behind. If you go by order numbers alone, Jalapenos are only at 26%. Little singles are only at 17%, Singles are only at 4% and the mini's are at 6% for 1/3 of orders and maybe 1-2% of 2nd?
15% by order number, not by hash rate (which there is no way to divine). Again you rely on your "dark mini-rig" mass to account for the difference.
That said, this also does not take into account cancelled orders and refunds.
Using the available data, i calculated 2/3 orders had a jalapeno, 1/4 had an LS, 5/9 had a single and 1/27 had a mini. Using the order numbers they were up to at the time, these averages gave me 165TH for BFL when total hash was ~450TH. Given the lack of other shippers and 40TH to bitfury, when added to the estimates everyone had for Avalon and ASICMiner, we were still about 30TH shy. I felt that was a pretty good estimate.
2/3rds Jalapenos? 3575 Jalapenos ordered, 4951 orders total. That is 72.2% of orders have a Jalapeno if nobody ordered more than one.
Sadly, there are orders for 5,8,10,12,16,25,40,64, & dozens for 2 or 3. That blows your 2/3rds estimate out of the water.
You made the same mistake with your 5/9ths as Singles. More orders of singles were for multiple units than not. Far fewer than 1 in 27 orders had a mini-rig, and again many were for multiple units.
This is not the guesstimate of someone who attended MIT.
Another example of bcp19 playing fast and lose with the facts:
3) I kinda just dislike k9 in general, cause he seems to think BTC is a set currency and not a volatile commodity.
I specifically disabused him of this notion and dismantled his assertions to the contrary. Again, obviously not MIT material as he is unable to understand even basic currency calculations.