Panasonic UJ-846 DVD Writer
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What is the DVD Write speeds? CAV, CLV, PCAV, ZCLV. Read our DVD Writer colum explanation.
|1 DVD Writer hits, Showing 1 to 1 DVD Writers||
CDR, DVDR, BDR, HDDVDR
|Slim EIDE, Slot-in, 2MB
| DVD Media
comments for this DVD Writer (click on the link to
read the comments):
1 Datawrite 8xDVD+R (RICOHJPND01) comments, 0 good, 0 mixed, 1 poor.
1 Fujifilm 16xDVD-R (RITEKF1.....) comments, 1 good, 0 mixed, 0 poor.
1 Laser 16xDVD-R (MCC 03RG20) comments, 1 good, 0 mixed, 0 poor.
1 Mirror Platinum 4xDVD-R (MBI 01RG20) comments, 1 good, 0 mixed, 0 poor.
1 PC Line 4xDVD+RW (OPTODISCOP4) comments, 1 good, 0 mixed, 0 poor.
1 Primeon 2xDVD-RW (DAXON_RW2X01) comments, 0 good, 1 mixed, 0 poor.
1 Tesco 8xDVD+R (AML.....002) comments, 0 good, 0 mixed, 1 poor.
2 Verbatim 16xDVD-R (MCC 03RG20) comments, 2 good, 0 mixed, 0 poor.
1 Verbatim (DataLifePlus) 4xDVD+RW (MKM.....A02) comments, 0 good, 0 mixed, 1 poor.
Post your DVD Media comments here
Indeed - picky as hell, and the bane to my MacBook Pro experience. I can barely burn any dvds I buy - 95% of cheap dvds don't read at all and like hell I'm going to pay 10x the price of a blank so it can burn.
Everytime I need to burn a disk I generally have to copy/move the iso/files to our G5 and burn on it's more than accepting Pioneer burner.
No RPC-1 firmware and no patch to enable faster speeds / cheap media. Avoid if you have the option.
Comments posted by lotech from New Zealand, February 07, 2007. Rated this writer 4 of 10.
This drive was installed on my iMac when I bought it from Apple. This drive is very picky! It will only burn 2X for most media, for full 8X buring I suggest that you buy PREMIUM media ONLY e.g. Apple media or Sony. (Anything made in Japan) = $$$! Otherwise you are stuck with crappy performance.
Also there is no firmware released for this drive making it impossible to hack it to make the drive RPC 1 (Region Free). If I am going to be investing in an external DVD writer so I can avoid these problems!
Comments posted by Zaki from Canada, January 06, 2007. Rated this writer 5 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.