Sony DW-U50A DVD Writer
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What is the DVD Write speeds? CAV, CLV, PCAV, ZCLV. Read our DVD Writer colum explanation.
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CDR, DVDR, BDR, HDDVDR
|Slim EIDE, 8MB
| DVD Media
comments for this DVD Writer (click on the link to
read the comments):
1 Integrity 4xDVD+R (........001) comments, 0 good, 0 mixed, 1 poor.
1 Philips 4xDVD+RW (RICOHJPNW11) comments, 0 good, 0 mixed, 1 poor.
Post your DVD Media comments here
This is really a CD drive with a temporary life as a DVD burner. Is fussy about media, doesn't close out burns well, and won't even read its own burns after a while.
Comments posted by ddf from United States, November 04, 2006. Rated this writer 1 of 10.
This drive is dated with a DVD writing speed of only 4X.
There is a better replacement (not by Sony) if I can find it.
I saw it once on the web and it's plug and play. Better specs.
Don't bother calling Sony, they will tell you there is no upgrade. They want you to buy another notebook.
Comments posted by DaleB from United States, March 09, 2006. Rated this writer 6 of 10.
had this drive for over 1 year. pisses me off constantly. very very fussy with media. Some +RW discs I burnt 6 months ago now read as blank. sometimes burns dvd-r and dvd +r with success, then cannot even read the discs afterwards, even if they play fine in standalone dvd player!! Today I officially give up, have upgraded firmware etc. I buy a POINEER DVR-109d today and connect it with USB2
Comments posted by natas from United Kingdom, August 01, 2005. Rated this writer 2 of 10.
Safe the slowliness, it used to be very good, but after about one year it decided not to recognize some DVD-R brands. Now it can still read some DVD's, but burning is not possible anymore. Cd's are fine. Updated to latest firmware, but no improvment.
Comments posted by Reto from Switzerland, July 18, 2005. Rated this writer 5 of 10.
Comments posted by spear from Canada, May 28, 2004. Rated this writer 7 of 10.
| Column Explanation:
Click on this for more technical information.
New comments= New comments since your last visit.
New Writer = New DVD Writer since your last vist.
Original Equipment Manufacturer.
The manufacturer of the main chipset the DVD writer/recorder is based on.
Write support / Read support
DVD-R = Works
DVD-R? = Not tested
Single Layer(4.7GB) write speeds
1x (CLV) = about 58 minutes
2x (CLV) = about 29 minutes
2.4x (CLV) = about 24 minutes
4x (CLV) = about 14.5 minutes
6x (CLV/ZCLV) = about 10-12 minutes
8x (PCAV/ZCLV) = about 8-10 minutes
12x (PCAV/ZCLV) = about 6.5-7.5 minutes
16x (CAV/ZCLV) = about 6-7 minutes
Dual/Double Layer(8.5GB) write speeds
1x CLV = about 105 minutes
2.4x CLV = about 44 minutes
4x CLV = about 27 minutes
Single Layer (4.7GB) read speeds
1x read speed is 1.321MB/s = ~56 minutes
6x CAV (avg. ~4x) read speed is max 7.93MB/s = ~14 minutes
8x CAV (avg. ~6x) read speed is max 10.57MB/s = ~10 minutes
12x CAV (avg. ~8x) read speed is max 15.85MB/s = ~7 minutes
16x CAV (avg. ~12x) read speed is max 21.13MB/s = ~5 minutes
DVD Write types
CAV = Constant Angular Velocity, the DVD is written at a constantly increasing speed.
CLV = Constant Linear Velocity, the DVD is written at a constant speed.
ZCLV = Zone Constant Linear Velocity, the DVD is divided into zones. After each zone the write speed is increased.
PCAV = Partial Constant Angular Velocity, the DVD is being written at an increasing speed until a certain speed. After this speed it will not increase anymore.
Desktop = Standalone desktop DVD Recorder
EIDE = Computer DVD Writer with EIDE/IDE connection
SCSI = Computer DVD Writer with SCSI connection
USB = Computer desktop DVD Writer with USB 2.0 or/and 1.1 connection
FireWire = Computer desktop DVD Writer with IEEE 1394/FireWire/i.Link connection (some standalone desktop dvd recorder supports this also but then it is usually to connect your DV camera to the recorder)
The first rating is based on a weighted rank (the true Bayesian), it requires at least 5 votes to get a weighted rating.
The second rating between the ( ) is a normal average rating.