BenQ 1640 Burn Speed Fluctuations - Club CDFreaks

happyspader · 24-07-2005

Hi all,

I've only burnt a couple of full capacity DVDs, and have noticed that, if I burn my TYG02's at their rated speed (8x), the reported burn speed from DVD Decrypter fluctuates between 6x and 8x. In comparison, my Pioneer 107D burns constantly at 8x on the same media. My BenQ came shipped with the BSHB firmware.

The BenQ is on the secondary primary IDE channel, HDDs are on the other IDE channel, so there shouldn't be a bandwidth problem whilst burning.

The TYG02's are genuine with 99 quality score most of the time with the Pioneer 107D.

Also WOPC is disabled.

Is this speed fluctuation normal?

Thanks

happyspader · 24-07-2005

A scan of a recently burned TYG02, at 8x.

As you can see, these are top quality Taiyo Yudens

*lui_gough* · 24-07-2005

are you using normal MS IDE Drivers? no, i don't think these speed fluctuations should occur when WOPC is off, and your scan speed also dips regularly ... doesn't happen to my 1640, (my computers are AMD based) heard some Intel Mobos mite have problems. What is your computer configuration? Have you tried changing IDE cables (if not already)?. Try 80 conductor cable (not essential, but might make a difeerence.)

rahzel · 24-07-2005

my NEC 3520 didnt burnt at 8x the whole burn and neither does my benq 1640... i thought all drives didnt burn at 8x the whole time...

set the speed to 8x in CDSpeed instead. Nice scan btw.

z24 · 24-07-2005

Quote:

Originally Posted by lui_gough

are you using normal MS IDE Drivers? no, i don't think these speed fluctuations should occur when WOPC is off, and your scan speed also dips regularly ... doesn't happen to my 1640, (my computers are AMD based) heard some Intel Mobos mite have problems. What is your computer configuration? Have you tried changing IDE cables (if not already)?. Try 80 conductor cable (not essential, but might make a difeerence.)

thats normal scan, the DIP occur in my 1620 is when after burning and go to scan disc then you will have this kind of DIPing SCAN

always happen, but if you remove the disc and reinsert it, restart CDSPEED then the DIP gone

jarthel · 24-07-2005

same case for me. Except that I am using tyg01 and the burner (1640 with BSJB) can't even maintain 4x. It varies between 3.5 to 4x. I didn't encounter this issue with 4163.

happyspader · 24-07-2005

Thanks for all the replies.

No biggy really, just as long as I get top quality burns

In reply to one of the posts above, yes, I'm using default MS IDE drivers. Note that my previous burner, a Pioneer 107D, burns consistently at 8x all the way throughout, so I don't think it's got anything to do with the drivers, nor the IDE cable.

*MacClipper* · 24-07-2005

Quote:

Originally Posted by jarthel

same case for me. Except that I am using tyg01 and the burner (1640 with BSJB) can't even maintain 4x. It varies between 3.5 to 4x. I didn't encounter this issue with 4163.

Post a screenshot of the CD-DVD Speed Create Disk curve, easier to troubleshoot.

btw, the BenQ has WOPC while the GSA-4163 doesn't.

*MacClipper* · 24-07-2005

Quote:

Originally Posted by happyspader

In reply to one of the posts above, yes, I'm using default MS IDE drivers. Note that my previous burner, a Pioneer 107D, burns consistently at 8x all the way throughout, so I don't think it's got anything to do with the drivers, nor the IDE cable.

The DW1640 typically has 1-2 rather wide speed dips in all its 8x and 12x burns, best seen in a CD-DVD Speed Create Disk curve. And I think these are probably non-WOPC related.

happyspader · 24-07-2005

Below is a transfer speed scan of the same DVD burnt a few posts up:

Can someone tell me why there are spikes when reading back the disc at higher speeds?

Cheers.

*lui_gough* · 24-07-2005

hmmz... the disc might not be as good as it seems. I have a couple of those, and the PI/PIF and Jitter look great, but it has problems at high speed. I put it down to being a media thing, but I can't be sure. It might be other "un-measurable" parameters coming into play -> maybe even disc tilt, amplitude and shape of modulated signal or something else.

happyspader · 24-07-2005

It might not be a media issue since I get the same wobbles at higher speeds for TDK DVD+R (4x) which are RICOHJPNR01 and RiTEKG04.

SaBoCD · 24-07-2005

Quote:

Originally Posted by happyspader

As you can see, these are top quality Taiyo Yudens

How does max. PIF=3 give QS=99%

Sascha

24-07-2005	#1 (permalink)
happyspader CD Freaks Junior Member Join Date: Jun 2004 Posts: 79	BenQ 1640 Burn Speed Fluctuations <a href='http://adstats.cdfreaks.com/www/delivery/ck.php?n=a13febf7&cb=INSERT_RANDOM_NUMBER_HERE' target='_blank'><img src='http://adstats.cdfreaks.com/www/delivery/avw.php?zoneid=30&cb=INSERT_RANDOM_NUMBER_HERE&n=a13febf7' border='0' alt='' /></a> Hi all, I've only burnt a couple of full capacity DVDs, and have noticed that, if I burn my TYG02's at their rated speed (8x), the reported burn speed from DVD Decrypter fluctuates between 6x and 8x. In comparison, my Pioneer 107D burns constantly at 8x on the same media. My BenQ came shipped with the BSHB firmware. The BenQ is on the secondary primary IDE channel, HDDs are on the other IDE channel, so there shouldn't be a bandwidth problem whilst burning. The TYG02's are genuine with 99 quality score most of the time with the Pioneer 107D. Also WOPC is disabled. Is this speed fluctuation normal? Thanks

24-07-2005	#2 (permalink)
happyspader CD Freaks Junior Member Join Date: Jun 2004 Posts: 79	Re: BenQ 1640 Burn Speed Fluctuations A scan of a recently burned TYG02, at 8x. As you can see, these are top quality Taiyo Yudens

24-07-2005	#3 (permalink)
lui_gough CDFreaks Resident Join Date: Oct 2004 Location: .au/sydney Posts: 1,025	Re: BenQ 1640 Burn Speed Fluctuations are you using normal MS IDE Drivers? no, i don't think these speed fluctuations should occur when WOPC is off, and your scan speed also dips regularly ... doesn't happen to my 1640, (my computers are AMD based) heard some Intel Mobos mite have problems. What is your computer configuration? Have you tried changing IDE cables (if not already)?. Try 80 conductor cable (not essential, but might make a difeerence.) __________________ Drives I Own (and are in use in one of my many computers): - 3x BenQ DW1640 - 2x Pioneer DVR-111L - LG 4163B - Liteon SOHW-1633@1653s - Nu-Tech DDW-082 - Liteon 166s - Pioneer 120S - BenQ 1650s - LG GCE-8523B - Liteon LTR-5224 - BenQ 5224W - Liteon SOSW-852S - Philips DVD+-RW SDVD8820 - Ricoh MP7163A - Asus CD-S500/A

24-07-2005	#4 (permalink)
rahzel CD Freaks Member Join Date: Apr 2005 Posts: 200	Re: BenQ 1640 Burn Speed Fluctuations my NEC 3520 didnt burnt at 8x the whole burn and neither does my benq 1640... i thought all drives didnt burn at 8x the whole time... set the speed to 8x in CDSpeed instead. Nice scan btw.

24-07-2005	#6 (permalink)
jarthel CD Freaks Member Join Date: Jan 2000 Posts: 150	Re: BenQ 1640 Burn Speed Fluctuations same case for me. Except that I am using tyg01 and the burner (1640 with BSJB) can't even maintain 4x. It varies between 3.5 to 4x. I didn't encounter this issue with 4163.

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24-07-2005	#7 (permalink)
happyspader CD Freaks Junior Member Join Date: Jun 2004 Posts: 79	Re: BenQ 1640 Burn Speed Fluctuations Thanks for all the replies. No biggy really, just as long as I get top quality burns In reply to one of the posts above, yes, I'm using default MS IDE drivers. Note that my previous burner, a Pioneer 107D, burns consistently at 8x all the way throughout, so I don't think it's got anything to do with the drivers, nor the IDE cable.

24-07-2005	#10 (permalink)
happyspader CD Freaks Junior Member Join Date: Jun 2004 Posts: 79	Re: BenQ 1640 Burn Speed Fluctuations Below is a transfer speed scan of the same DVD burnt a few posts up: Can someone tell me why there are spikes when reading back the disc at higher speeds? Cheers.

24-07-2005	#11 (permalink)
lui_gough CDFreaks Resident Join Date: Oct 2004 Location: .au/sydney Posts: 1,025	Re: BenQ 1640 Burn Speed Fluctuations hmmz... the disc might not be as good as it seems. I have a couple of those, and the PI/PIF and Jitter look great, but it has problems at high speed. I put it down to being a media thing, but I can't be sure. It might be other "un-measurable" parameters coming into play -> maybe even disc tilt, amplitude and shape of modulated signal or something else. __________________ Drives I Own (and are in use in one of my many computers): - 3x BenQ DW1640 - 2x Pioneer DVR-111L - LG 4163B - Liteon SOHW-1633@1653s - Nu-Tech DDW-082 - Liteon 166s - Pioneer 120S - BenQ 1650s - LG GCE-8523B - Liteon LTR-5224 - BenQ 5224W - Liteon SOSW-852S - Philips DVD+-RW SDVD8820 - Ricoh MP7163A - Asus CD-S500/A

24-07-2005	#12 (permalink)
happyspader CD Freaks Junior Member Join Date: Jun 2004 Posts: 79	Re: BenQ 1640 Burn Speed Fluctuations It might not be a media issue since I get the same wobbles at higher speeds for TDK DVD+R (4x) which are RICOHJPNR01 and RiTEKG04.

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