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Serial ATA 3G Question

kent

kent

2[H]4U
Joined
Apr 8, 2001
Messages
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Friend of mine is wanting to add another hard drive. Dell though it nice to only include an 80GB with his system.

Anyways, I'm planning on just getting him a SerialATA 300 (3G) HDD but his motherboard only supports Serial ATA150.

How do I go about getting this to work?
 
Afaik it should degrade gracefully, with the only thing you loose being the higher burst capacity from the higherspeed bus.
 
The real world performance difference between SATA 150 and SATA 300 drives is minimal. Rotational speed and disk cache make more of a difference. The sustained transfer rates are going to be close, while the burst rate of SATA 300 is potentially twice what it is for SATA 150. However, these bursts of speed are always in short duration and usually don't max out the bus of the device anyway. Meaning that a burst on a SATA drive might be 75mB / sec. rather than the whole 150 or 300 mB / sec.

This is why the Raptor continued to dominate so long after its release. With a 10,000rpm rotational speed and small size, the drives seek times were far less than that of normal drives. Most 7200rpm SATA 300 drives with NCQ couldn't beat the Raptors, and generally still can't. Though a new SATA 300 10,000rpm Raptor now dominates, but the performance per gigabyte blows.

As with all ATA specifications, the newer drives are required to maintain backwards compatibility with the older standards in order to preserve compatibility. So yes, your SATA 300 drive will work on an SATA 150 capable motherboard.
 
Dan_D said:
The real world performance difference between SATA 150 and SATA 300 drives is minimal. Rotational speed and disk cache make more of a difference. The sustained transfer rates are going to be close, while the burst rate of SATA 300 is potentially twice what it is for SATA 150. However, these bursts of speed are always in short duration and usually don't max out the bus of the device anyway. Meaning that a burst on a SATA drive might be 75mB / sec. rather than the whole 150 or 300 mB / sec.

This is why the Raptor continued to dominate so long after its release. With a 10,000rpm rotational speed and small size, the drives seek times were far less than that of normal drives. Most 7200rpm SATA 300 drives with NCQ couldn't beat the Raptors, and generally still can't. Though a new SATA 300 10,000rpm Raptor now dominates, but the performance per gigabyte blows.

As with all ATA specifications, the newer drives are required to maintain backwards compatibility with the older standards in order to preserve compatibility. So yes, your SATA 300 drive will work on an SATA 150 capable motherboard.
Click to expand...

when did the raptor come out in sata2? :drools:
 
They didn't. The ADFD is 150 MB/s. It does have NCQ, which is one of the SATA 2 features.

Sata2 doesn't mean speed, necessarily. There are naming guidelines available.
 
AFAIK, no single SATA drive has ever passed the 150mb/s ceiling yet...close, but not yet.
 
oplin said:
You'll lose NCQ and the ability to hot swap also.
Click to expand...
no, you won't. Hot-swapability (is that a word?) is a feature of the driver. The interface id designed for it (longer ground pins than supply pins) but that is all.
 
protias said:
when did the raptor come out in sata2?
Click to expand...
unhappy_mage said:
They didn't.
Click to expand...
ya, because i just thought released something without me knowing about it. hence my confusion. *smacks head on counter for not searching before posting* ouch! i think im gonna lie down now. *passes out*
 
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