U-DMA 6 how to enable it ?

slicessoul

August 30, 2006 11:10:21 AM

Hi guys...

My specs :

Asus P5P800SE
P4D 930 3GHz
Corsair 1 GB (2x512)
Audigy2 ZS
Seagate 320GB 7200.10 S-ATA
Plextor DVD Writer IDE
DVD-ROM IDE

OS : Windows XP Media Center 2005 SP2

In SiSoftSandra, i see that my mainboard support Ultra DMA 6, but my HDD only run in Ultra DMA 5 and i have to change it if i want an optimal system. Is there any way to change from Ultra DMA 5 to Ultra DMA 6 ?

I already tried to see the option in BIOS but there's no option for Ultra DMA 6.

As i understand from Asus website, my mainboard support ATA 100/66/33, and Ultra DMA 6 is equal to ATA 133, so which one is correct ? SisoftSandra or Asus website ?

thanks in advance.

More about : dma enable

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The_Prophecy

August 31, 2006 2:41:51 PM

Technically the SATA drive you have is running at UDMA 7, the BIOS just reports it as UDMA 5. There's nothing you can do to change it, so I wouldn't worry.

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slicessoul

September 1, 2006 5:51:42 AM

Thanks for the explanation.
Do you think there will be performance differences between those UDMA ?

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The_Prophecy

September 1, 2006 7:36:56 AM

By the numbers, yes. In the real world, no.

It doesn't really matter anyway because that SATA drive is actually using UDMA 7, the BIOS is just reporting it as using UDMA 5.

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slicessoul

September 1, 2006 7:46:49 AM

Thanks a lot for replies.

Those numbers are always change just because marketing business, right ?

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The_Prophecy

September 1, 2006 8:11:23 AM

Quote:

Those numbers are always change just because marketing business, right ?

I don't understand what you mean by this....

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slicessoul

September 1, 2006 8:37:16 AM

Quote:

By the numbers, yes. In the real world, no.

It was you who said this. So U-DMA 6 then to U-DMA 7 is just a number for business if there's no diferences in performance.

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azomiss

September 1, 2006 8:43:59 AM

If Asus P5P800SE is using ICH5 then you must be aware that in sata mode your hdd will run ONLY as UDMA5 thanks to intel.

I have the same problem with my Abit AI7 (ICH5).

peace

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darkstar782

September 1, 2006 9:08:34 AM

Does it matter? Unless you have some exotic and overpriced solid state disk then it is way slower than 100mb/s let alone 150mb/s. Put it on some magical 100,000,000mb/s bus and it still wont be any faster.

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azomiss

September 1, 2006 9:12:35 AM

Quote:

Does it matter? Unless you have some exotic and overpriced solid state disk then it is way slower than 100mb/s let alone 150mb/s. Put it on some magical 100,000,000mb/s bus and it still wont be any faster.

is just an answer to a question

i only try to help

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The_Prophecy

September 1, 2006 4:49:27 PM

Quote:

Does it matter? Unless you have some exotic and overpriced solid state disk then it is way slower than 100mb/s let alone 150mb/s. Put it on some magical 100,000,000mb/s bus and it still wont be any faster.

Exactly.... that's why i said there was no real world performance difference.

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