SATA 300 Drive Being Run At 150

Tim Daneliuk tundra at
Sat Jul 21 21:27:30 UTC 2007

Garrett Cooper wrote:
> Tim Daneliuk wrote:
>> I asked this question a while back, but needed to do more digging to make
>> sure I had latest sources etc.
>> I have an Intel motherboard that shows this for a SATA controller:
>> atapci1: <Intel ICH7 SATA300 controller> port 
>> 0x20c8-0x20cf,0x20ec-0x20ef,0x20c0-0x20c7,0x20e8-0x20eb,0x20a0-0x20af 
>> mem 0x90204000-0x902043ff irq 19 at device 31.2 on pci0
>> But the hard drive - a SATA 300 device - shows up like this:
>> ad4: 238475MB <WDC WD2500JS-00NCB1 10.02E02> at ata2-master SATA150
>>                                                             ^^^^^^^
>> Using dd, I have confirmed that the drive is running nowhere near
>> SATA-III speeds, at least on reads:
>> 968470075 bytes transferred in 7.132891 secs (135775249 bytes/sec)
>> This is on a 6.2-Stable system that is very lightly loaded...
> SATA Cable not 300Mbps capable?
> -Garrett

I hadn't considered that given that the cable came with the mobo and
the mobo is SATA-III capable.  But ... anything is possible.  I'll
have to give that a look... Thanks.

Tim Daneliuk     tundra at
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