Ultra DMA 5 vs DMA 2 ??? whats the diff???

[Ludicrous]

I was messing around with AIDA32 and it said that my 80 gig Western Digital HD supported ULTRA DMA 5.

I checked and it was set to DMA 2, so being me, I changed it to DMA 5. It does better in SANDRA test, should I stick with it, or will it cause dramas later on?

I run XP Home on a Gigabyte GA7N400, 2500+AMD etc.


T H A N K S

 

[DAPUNISHER]

Leave it on 5, that's where it belongs, you were running ATA 33 speed=slow, before. Do you have a optical drive on the same cable with it or something?

 

[Ludicrous]

Yeah, my CD ROM. should I set it to slave on the other channel with my burner???

This may explain a few things (I hope, like poor playback of music)

 

[imported_MrPsycho]

I think the limitations of the cable force all the devicies on it to run at the same speed. Thats why you should never run a cdrom drive on the same ribbon cable as your hard drive.

 

[Zepper]

Actually DMA2 is the same as PIO4=16MB/sec... Eeeeewwww!
.bh.

It's Sunday, have some :wine: !

 

[Steve]

MWDMA = MultiWord Direct Memory Access
UDMA = Ultra DMA

UDMA 6 = ATA/133
UDMA 5 = ATA/100
UDMA 4 = ATA/66
UDMA 3 = ATA/50 (rare)
UDMA 2 = ATA/33

and so on down the line, some of the modes overlap in transfer speeds

 

[Zepper]

He said DMA2 not UDMA2...
.bh.

 

[Steve]

Yes, I saw that. Just for clarification DMA = MWDMA.

My IDE hard drives run UDMA 4 while my optical drive only does MWDMA 2.