Ok, ti ringrazio!
Ho provato con CrystalDiskMark e mi pare di aver "totalizzato" delle velocità bassissime.
Sequential Read : 49.788 MB/s
Sequential Write : 49.146 MB/s
Random Read 512KB : 22.369 MB/s
Random Write 512KB : 41.686 MB/s
Random Read 4KB (QD=1) : 0.433 MB/s [ 105.6 IOPS]
Random Write 4KB (QD=1) : 0.990 MB/s [ 241.8 IOPS]
Random Read 4KB (QD=32) : 0.458 MB/s [ 111.8 IOPS]
Random Write 4KB (QD=32) : 0.982 MB/s [ 239.8 IOPS]
Test : 1000 MB [K: 70.2% (653.9/931.5 GB)] (x5)
Date : 2013/06/08 21:08:04
OS : Windows 7 Professional SP1 [6.1 Build 7601] (x64)