HP Vectra XU 6/XXX HP Vectra XU 6/xxx, Guide to Optimizing performance - Page 42

Optimized Timings

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1 Your PC's Performance Features Making the Most of Your PC's IDE Channels Optimized Timings Different IDE devices have different data transfer capabilities. The latest IDE hard disk drives support PIO Mode 4 and DMA Mode 2 timings, but older hard disk drives and CD-ROM drives will typically support only the lower modes. To give maximum performance with any combination of IDE devices, your PC's IDE controller supports split-mode timing on both IDE channels. This means that it is able to transfer data at different rates with different devices on the same IDE channel. Split mode timing enables you to gain all the performance advantage from the latest generation IDE devices, without compromising your ability to connect slower devices. Lower data transfer rates are used for slower IDE devices such as CD-ROM drives Data is transferred with faster IDE devices at the maximum rate supported Different transfer rates are used for IDE devices of different capabilities connected on the same IDE channel 36 English

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1
Your PC’s Performance Features
Making the Most of Your PC’s IDE Channels
36
English
Optimized Timings
Different IDE devices have different data transfer capabilities. The
latest IDE hard disk drives support PIO Mode 4 and DMA Mode 2
timings, but older hard disk drives and CD-ROM drives will typically
support only the lower modes.
To give maximum performance with any combination of IDE devices,
your PC's IDE controller supports split-mode timing on both IDE
channels. This means that it is able to transfer data at different rates
with different devices on the same IDE channel. Split mode timing
enables you to gain all the performance advantage from the latest
generation IDE devices, without compromising your ability to connect
slower devices.
Lower data
transfer rates
are used for
slower IDE
devices such as
CD-ROM drives
Data is transferred with
faster IDE devices at the
maximum rate supported
Different transfer rates are used for
IDE devices of different capabilities
connected on the same IDE channel