Plextor 40/12/40a

vbimport

#1

i have just bought the plexwriter 40/12/40a, and the write speed

will not go above 18, untill the buffers start emptying, and then it

speeds up. i have a 750mhz AMD and 512mb pc133 ram and win

xp pro. the progs i was using was clonecd 4.0.0.1 and nero

5.8.7.2. can anyone tell me why this is? TIA


#2

by some better media


#3

ive tried the media that came with the writer and other medias

and the same thing happens every time


#4

Where did you read out the 18x? Is that the average speed? The Plextor is limited to 24x recording when writing audio and writing in RAW-DAO (CloneCD).


#5

Try The nero speed test, cus I have the plex 40x and with the Plex 80mins that came with my 40x…get to 40x no problem.

Have u enabled UDMA on the IDE ports?..the Plex 40x is UDMA 2.
Use an 80 pin IDE cable…

What aspi layer r u using? and wot program is reporting only 18x?

all/more info will help…thanks bud

Bartman:cool:


#6

the max speed on clone cd when its writing is 18 or 19.

i know you must think im stupid but what is udma and how do

you enable it. sorry about the stupid question


#7

Since the only writer that can write at 18x is Yamaha 3200 and only if media doesn’t allow 20x, you definetly have a problem as to the data transfer to the writer.

You obviously forgot to answer this question:
Have u enabled UDMA on the IDE ports?..

So please answer…


#8

i dont know what udma is or how 2 enable it as i said b4

the writers speed goes from 16x to 18x all the way through the writing process


#9

i just tried the nero speed check and the range was about 12x to 20x


#10

Hi bud…right click on “my Computer” select “properties” then go into “Hardware” then into “Device Manager” the select “IDE ATA/APTI Controllers” open one at a time “Primary IDE Channel” and “Secondary IDE Channel” go into “Advance Settings” …In ther it should say if the channels are set to “UDMA 2” if they are not select " DMA If Avalible" on the drop down menus, and do that for all of them in Primary and Secondary IDE Channels…

IF you cannot change them to UDMA 2 then you might have to set it up in the bios first…

HTH

Bartman:cool:


#11

Here is a pic to show how

Bartman :cool:


#12

Originally posted by Bartman@MASH
[B]Try The nero speed test, cus I have the plex 40x and with the Plex 80mins that came with my 40x…get to 40x no problem.

Have u enabled UDMA on the IDE ports?..the Plex 40x is UDMA 2.
Use an 80 pin IDE cable…

What aspi layer r u using? and wot program is reporting only 18x?

all/more info will help…thanks bud

Bartman:cool: [/B]

Wrong… UDMA2 doesn’t need a 80 wire cable,
40 will do nicely, 80 wire will try to force a higher mode,
but that won’t work…


#13

well here some info…

UDMA stands for Ultra Direct Memory Access

Pio mode 4 = 16 MB/sec
DMA33 = 33 MB/sec
UDMA66 = 66 MB/sec
UDMA100 = 100MB sec

cd-writers will only use in some rare occasions DMA33
(especially when caching)
Most Optical drives like CD-roms don’t go any faster than
Pio mode 4

Only harddisk will use the UDMA mode which requires a 80-line cable.


#14

Rare occasions? I don’t agree since almost all new (read: fast) writers use/support UDMA33. I have three writers here which support it: TEAC CD-W540E (40x writer), Mitsumi CR-480ATE (32x writer) and the Yamaha CRW3200E (24x writer). For the rest I agree. UDMA 33 does not require an 80-pins IDE cable. My system:

On 80-pins cable:

-32GB HD running UDMA 66
-Mitsumi running UDMA 33

On 40-pins cable:

-Yamaha running UDMA 33
-TEAC running UDMA 33

And running smoothly :wink:


#15

thanks everyone for all your help i enabled udma and then

swapped the ide cables around and now it gets to 40x no probs;)


#16
  • Only ATA66+ needs an 80 conductor cable, but it’s all I use :p[]A UDMA optical is very important[]While they will never get to 33 MB/s, it’s the standard that’s important[]A UDMA device can busmaster & bypass the CPU[]A PIO device will hog the CPU[]PIO & UDMA on the one channel is a free ride to coaster hell[]A 40 conductor ribbon cable on an ATA66+ device will notch it back to PIO - it has no alternative as the voltage will interfere with the CRC[]UDMA devices of different speeds can be placed onto the one channel without detriment given the overlapping and command queuing protocol in ATA4[]More stuff here :smiley:

#17

Originally posted by FutureProof
[ul][li]Only ATA66+ needs an 80 conductor cable, but it’s all I use :p[]A UDMA optical is very important[]While they will never get to 33 MB/s, it’s the standard that’s important[]A UDMA device can busmaster & bypass the CPU[]A PIO device will hog the CPU[]PIO & UDMA on the one channel is a free ride to coaster hell[]A 40 conductor ribbon cable on an ATA66+ device will notch it back to PIO - it has no alternative as the voltage will interfere with the CRC[]UDMA devices of different speeds can be placed onto the one channel without detriment given the overlapping and command queuing protocol in ATA4[]More stuff here :D[/ul] [/li]

My setup only permits MultiWordDMA2 (one mode you forgot)
it never reaches (atapi cd rom/writer) UDMA2 with me,
but i guess i should be happy with this mode,
Maybe certain DIMM memory mode settings have effect,
on perfomance ? with me, the memory “switch” PC100-PC133
made a difference for playing MPEG movies,or not playing
them at all.


#18

Originally posted by Fugitive
[B]

My setup only permits MultiWordDMA2 (one mode you forgot)
it never reaches (atapi cd rom/writer) UDMA2 with me,
but i guess i should be happy with this mode,
Maybe certain DIMM memory mode settings have effect,
on perfomance ? with me, the memory “switch” PC100-PC133
made a difference for playing MPEG movies,or not playing
them at all. [/B]

btw. i understand the main problem is, that the amount of
bytes in one block of data that is transferred is different
of that, what is used normaly for a non-optical device.
So i think MS Windows is the main reason for most troubles:(


#19

Originally posted by Fugitive
…the amount of bytes in one block of data that is transferred is different of that, what is used normaly for a non-optical device.
I didn’t know that; in the stuff I’ve read this hasn’t been mentioned (doesn’t mean it’s not true of course ;))

Speeds here

Multiword here

Is MultiWord DMA-Mode 2 - 16.66MB/s the same as UltraDMA-Mode 0 - 16.66MB/s the same as PIO 4 - 16.66MB/s…not at all. You only get busmastering in UDMA. “Word” refers to the number of bytes moved on each strobe.

The Intel PIIX made it all possible, others, just imitators LOL


#20

Originally posted by FutureProof
[B]I didn’t know that; in the stuff I’ve read this hasn’t been mentioned (doesn’t mean it’s not true of course ;))

Speeds here

Multiword here

Is MultiWord DMA-Mode 2 - 16.66MB/s the same as UltraDMA-Mode 0 - 16.66MB/s the same as PIO 4 - 16.66MB/s…not at all. You only get busmastering in UDMA. “Word” refers to the number of bytes moved on each strobe.

The Intel PIIX made it all possible, others, just imitators LOL [/B]

Yes i know this, but i’m happy because it doesn’t cost
any (important) CPU time, and when the time is “ripe”
i change my mobo (for AMD XP) and memory type (DDR)
and hope to overcome some of the problems i have now…