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Daytrader

Asus P5QL PRO sata question....

32 posts in this topic

So what about my question guys :)

Which one?

So guys, am i right in thinking, if i install xp pro with sp3 slipstreamed into my install disk, and install useing my asus p5ql pro motherboard useing the sata port connected to my install sata hard drive with bios set to ide, i do not have to slipstream the sata ahci/raid drivers in if bios is set to ide and i do not want to enable ahci or raid in the future ? i mean will i still get the sata hard drive working to its 300 speed spec, i know it dont actually get any where near that, but i mean will i be getting the full benift from my connected sata drive compared to just a old pata/ata hard drive, i just want confirmation please / cheers

The answers to these ones has been already posted.

Yes, you *can* install to a SATA disk setting the BIOS in "IDE compatibility mode", it will work alright..

Yes, you don't *have to* enable AHCI in the future.

No, you won' thave the *full* benefit from your SATA drive if you use not AHCI, the difference between what you will get in "ide compatibility mode" vs. AHCI is not easily calculated, a number of factors may affect it, including the model/make of the hard disk drive, the controllers used, etc., etc.

And yes it is possible to install in "IDE compatibility mode" and only later "switch" to AHCI.

jaclaz

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Using IDE mode will most likely make you loose between 5 or 10% if you benchmark the drive in both mode and compare.

In real world usage, you most likely won't see any difference.

@Jaclaz

Yes, guess what english isn't my first language and i am not anywhere near being fluent in english. But in the end, you understood what i meant.

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Thx again guys, so even installing a new install of xp pro on my sata hard drive without intel/sata drivers with the default ide setting in my motherboard bios, it will still be like useing a sata drive and not a old ata/pata drive correct ? its just that i will loose a little because its not AHCI enabled, but still the bandwidth will be upto 300 and not just 133 limited of a old ata/pata drive, cheers

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Thx for confirmation, i hate being OCD over these things and asking the same sort of question over and over again, cheers for understanding.

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@dyatrader

BUT there is still a misunderstanding.

Do no confuse bus speed with actual device (or data transfer) speed.

Benchmark your disk (and possibly find a public benchmark of it and several other disk to make a comparison).

A SATA interface is credited for THEORETICAL:

http://en.wikipedia.org/wiki/Serial_ATA

2.1 SATA revision 1.0 - 1.5 Gbit/s - 150 MB/s

2.2 SATA revision 2.0 - 3 Gbit/s - 300 MB/s

2.3 SATA revision 3.0 - 6 Gbit/s - 600 MB/s

as always happens most of the hype is about the theory, any common 7200 RPM hard disk SATA 2 or SATA 3 will not be that much faster than a very fast SATA1 disk, as more or less the "saturation" of a mechanical hard disk is near the 150 Mb/s (and in day-to-day opreration what really counts is read times and "random access")

Check this:

http://www.computerworld.com/s/article/9175410/SATA_6Gbit_sec._Does_it_double_your_SATA_speed_

and this (to have an idea how different settings with differnet disk drives may be largely different):

http://expertester.wordpress.com/2008/07/24/ahci-vs-ide-–-benchmark-advantage/

jaclaz

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Thankyou for that post, i will do some tests once i get my system up and running, i just wanted to make sure my new sata hard drive will still have some benifits connected to the sata port(even thou AHCI wont be enabled or sata drivers installed ) on motherboard over a old ide drive connected to the old ide slots, and allen2 confirmed it will be enabled as a sata drive still.

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