What Is the Difference Between AHCI and SATA in Dell Precision BIOS? The basic input/output system (BIOS) on the Dell Precision is a small program contained on the motherboard that enables users to change hardware settings via a simple graphical user interface (GUI). Users can change the SATA operation of drive to advanced host controller interface (AHCI) to improve hard drive performance. SATA Operation. The Dell Precision includes an option in the BIOS to change the SATA operation, or SATA mode. SATA devices can run in ATA, AHCI or RAID mode. ATA mode lacks the features of AHCI, but is compatible with older operating systems.
AHCI works with modern operating systems, like Windows Vista and Windows 7, and has extra features ATA lacks. RAID mode can run on Windows XP and Windows 2. AHCIAHCI isn't compatible with Windows XP or older editions of Windows. SATA devices perform better when configured as AHCI, rather than ATA; AHCI reduces the time it takes to save and open files on the hard drive via the native command queuing (NCQ) feature, which optimizes multiple read/write commands. AHCI also allows hot plugging, a feature which enables users to swap out hard drives while the Dell Precision is still on.
ATAATA mode should be used when running older operating systems on a SATA hard drive. The SATA device emulates ATA - - also known as Parallel ATA (PATA) or integrated drive electronics (IDE) - - technology. SATA was developed in 2. ATA devices had been in common use for about a decade. Therefore, while ATA devices have the most compatibility with all operating systems, it doesn't have the same performance or features as AHCI, a newer technology.
BIOS Options. You can change the SATA operation in the Dell Precision BIOS. Some Precisions might not have the option for RAID, while others will have options such as .
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