The ADATA S511 2.5″ 120GB SATA3 SSD AS511S3-120GM-C achieved on SATA3 port in AHCI mode the to date highest sequential read performance and usual low access time.
The ADATA AS511S3-120GM-C 120GB MLC Solid State Drive with SandForce Controller and 25nm Intel NAND was tested both in the more current AHCI mode, and in legacy IDE mode, whereby the AHCI mode showed clear advantages. Most write performance benchmark values were in legacy IDE and AHCI clearly below the enormously high S511 read values and was in this discipline not as fast as the previously tested Crucial m4 256GB SSD. In AHCI mode on the SATA3 Controller we measured much higher performance than in legacy IDE, not only regarding the 4k-64Thrd values, but additionally also regarding high differences at the seuquential read performance. So one should thus operate this ADATA S511 2.5″ 120GB SATA3 SSD necessarily in AHCI mode and change the SATA controller mode in the BIOS to AHCI before installing the operating system. The Microsoft Windows 7 Ultimate boot procedure from start screen to login screen only 8 seconds and the Windows 7 performance index reached 7.8 from 7.9 possible points.
All in all this ADATA S511 120GB SSD is a good choice for users, who need a very high read performance for e.g. Windows 7 operating system on a current PC system with SATA3 interface in AHCI mode.
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