The ReadyNAS Duo's performance was another nail in the coffin of the Buffalo LinkStation Pro Duo. The ReadyNAS Duo, with its 256MB of memory, wasn't quite as fast as the ReadyNAS NV+, but it was still fast. On Gigabit Ethernet read tests, the box averaged 24.6 megabytes per second when working with 32MB files, falling to 11.31 MBps using 1GB files. Compare to the Buffalo's 14.7 MBps and 9.2 MBps, respectively. On write tests, the Netgear device managed 17.53 MBps with 32MB files and 13.7 MBps transferring 1GB files. That's noticeably slower than its more hardware-muscled precursor, but it's lightning-fast compared with the Buffalo LinkStation Pro Duo, which averaged only 10.1 MBps with 32MB files and 8.92 MBps with 1GB files.