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blagus · 12-26-2013, 21:30

I've just made some quick calculations, based on ighashgpu table, bitcoin FPGA experience and simple maths.

Nokia SL3 has a total of 10^15 combinations.

1) When compared to some of the fastest bitcoin FPGA setups, which perform more complex maths - double SHA-256 compared to our SHA1:
Let's say that FPGA has the speed of 60G/sec, at double SHA-256 hash bruteforcing.

60G = 60*10^9/sec

The time required to cycle out every possible SL3 combination:
10^15 / (60*10^9) = 16666,67 sec = 277,77 min = 4,629 h = 4h 37min

I won't get into how faster it would be with SHA1, these numbers are for double SHA-256.

2) Now, let's take a decent, low end PC (for a bruteforcer), for example, overclocked 4870, which would give ~1G/sec:
1000M = 1G = 10^9/sec

Time = 10^15 / 10^9 = 10^6 sec = 16666,67 min = 277,77 h = 11,57 days

3) Goal would be to get close to BF-freaks on this forum who get 10G+/sec with 3x or 4xHD7970.

10 000M = 10G = 10*10^9/sec

Time = 10^15 / (10*10^9) = 100k sec = 1666,67 min = 27,7 h = 1,16 days

Even better - double speed, half time:
20G= 20*10^9/sec

Time= 10^15 / (20*10^9) = 50k sec = 833,33 min = 13,89h = 13h 53min.

Keep in mind the extra low power consumption of CPLD - a couple of watts compared to several hundred watts of a regular PC.

12-26-2013, 21:30	#2 (permalink)
blagus Freak Poster Join Date: Dec 2009 Location: EU Posts: 435 Member: 1178861 Status: Offline Sonork: 100.1590268 Thanks Meter: 60	I've just made some quick calculations, based on ighashgpu table, bitcoin FPGA experience and simple maths. Nokia SL3 has a total of 10^15 combinations. 1) When compared to some of the fastest bitcoin FPGA setups, which perform more complex maths - double SHA-256 compared to our SHA1: Let's say that FPGA has the speed of 60G/sec, at double SHA-256 hash bruteforcing. 60G = 6010^9/sec The time required to cycle out every possible SL3 combination: 10^15 / (6010^9) = 16666,67 sec = 277,77 min = 4,629 h = 4h 37min I won't get into how faster it would be with SHA1, these numbers are for double SHA-256. 2) Now, let's take a decent, low end PC (for a bruteforcer), for example, overclocked 4870, which would give ~1G/sec: 1000M = 1G = 10^9/sec Time = 10^15 / 10^9 = 10^6 sec = 16666,67 min = 277,77 h = 11,57 days 3) Goal would be to get close to BF-freaks on this forum who get 10G+/sec with 3x or 4xHD7970. 10 000M = 10G = 1010^9/sec Time = 10^15 / (1010^9) = 100k sec = 1666,67 min = 27,7 h = 1,16 days Even better - double speed, half time: 20G= 2010^9/sec Time= 10^15 / (2010^9) = 50k sec = 833,33 min = 13,89h = 13h 53min. Keep in mind the extra low power consumption of CPLD - a couple of watts compared to several hundred watts of a regular PC.