mine, from 2011, have i5(2500) 4-core 3.3Ghz, 16GbRAM(1333Mhz), and sata3Gb/s (2To 6Gb/s), cost me 30€ and build in 5h00 for the first shot and 1h30 for the second shot…
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so please what version did you build ?
now that you builded for a5y17lte, your build for a7y17lte will take 25% of time to build compared to the first one…