BitcoinFPGA uses
LX150-3FGG484C (
overview /
datasheet) at 100 MHz which can use DCM internally to get 375 MHz (ds-page 59). It performs at 400 MH/s at an unknown frequency. And has an equalient number of logic cells of 147 443.
FPGA Arcade uses
XC3S1600E-FG320-4 at 27 MHz which can be up clocked internally to at least 180 MHz via DCM or 311 MHz if the chip is a stepping 1 (page 140). And has equalient number of logic cells of 33 192 (page 2).
(
schematic page8 CDCE906 HC49-27.000)
So given the larger matrix and higher clock speed the LX150-3 would be capable to (147443/33192)*(375/180) = 9.3 times the number crunching capacity. However the LX150-3 based
firmware (
src) is limited to 186 MHz thus max (147443/33192)*(186/180) = 4.6 times the performance.
The board in question using LX150-3 does however employ two FPGA chips but this won't change the per chip performance.
So expect no more than 43 MH/s on FPGA Arcade. Perhaps someone can translate that into USD/s ..?
@MikeJ, Question, is the FPGA-chip used a stepping 0 or stepping 1 version ..?
