Alrighty, so I just received my new NC8430 this morning, been setting it up for the past few hours and I have a question for other NC8430 users.
I noticed that there's only a Primary IDE Controller listed in Device Manager (usually there's a secondary as well, but this is probably normal for this notebook) so I decided to check to see what transfer mode the connected drive/s are running in. For some reason (and I'm thinking that this is the DVD drive I'm looking at here) it's running in "Multi-word DMA mode 2" where usually it would be "Ultra DMA mode X" where "X" is a number corresponding to what level of UDMA it's running at.
Now, it seems to be running fine (and damn snappy too), but I wanted to make sure that this is normal for this notebook, as I've not seen a drive running in this mode on either a desktop or laptop up till now.
Loving the keyboard so far btw.![]()
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For whatever reason, HP/Compaq lowers the DMA mode of optical drives in their laptops to the "Multi-word DMA mode 2" even though the drive supports Ultra DMA Mode 2. I have not seen other manufacturers (like Toshiba, Sony, and Acer) do that.
The 16.6MB/s bandwidth (~13MB/s in real world) provided by "Multi-word DMA mode 2" is enough for current laptop optical drives, although the efficiency seems lower than at Ultra DMA Mode 2.
Quick Ultra DMA question (NC8430)
Discussion in 'HP' started by UltraCow, Mar 30, 2007.