HP DVD940e 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
|USB2, 2MB, LightScribe
| DVD Media
comments for this DVD Writer (click on the link to
read the comments):
1 Mr. DVD 16xDVD+R (MCC.....004) comments, 1 good, 0 mixed, 0 poor.
1 Sony 16xDVD+R (SONY....D21) comments, 1 good, 0 mixed, 0 poor.
Post your DVD Media comments here
purchased from local retailer - was OK at start. Within 2 weeks, +R DVD read/write functions became erratic. By 4 weeks, unit could not read commercial pressed disks. Only dependable function left was Lightscribe.
Contacted HP and returned unit under warranty. HP replaced unit. Replacement unit behaved nearly identical to original writer in terms of failure mode/time frame and now again can only write lightscribe.
Will not sink more return shipping $ into this pc of junk. Has been replaced by a LG Super Multi writer which is performing flawlessly after 2 months.
Comments posted by rcb from United States, November 19, 2007. Rated this writer 2 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.