March 26th, 2006, 09:55 PM
Does using DMA make your computer Slower?
Does using DMA (direct memory access ) make your computer slower. In my case it does. On my 3.2 Ghz P4 HT cpu with 1GB of ram it takes,(with dma on) twice as long to rip a full length dvd to the hard drive than it does my older 2.53GHz P4 cpu wih 512MB ram.
I'm wondering why it's slower, because I thought DMA would make it faster. The DVD drive on my new computer is also faster and a faster harddrive( serial compared to IDE) as well. So I was wondering if I should turn DMA off or something, because it doesn't make sense at all.
March 26th, 2006, 10:03 PM
Not all drives support DMA. If you enable it and it is unsupported - obviously this will lead to problems!
If your system seems to be going faster when it is disabled, I would say this is a sure sign that something in your setup doesn't support it.
Check your manual first - or post the make of your DVD RW / HDD!
March 26th, 2006, 10:07 PM
Do you know how I can turn it back off with Windows XP machine?
March 26th, 2006, 10:12 PM
You may still be able to leave it enabled for either the HDD or DVD RW - depending if they support it.
The site I linked to will help you!
March 26th, 2006, 10:23 PM
There is only one option for the transfer mode other than DMA and it's "PIO only", should I select that option to turn it off?
March 26th, 2006, 11:45 PM
PIO is the fallback mode for when things go wrong, and it is slower.
I came in to the world with nothing. I still have most of it.