As I’ve promissed in the FW1.05 thread, here’s my comparison between my new NEC3500 and the handpicked unit no 4 (PX712A).
NEC3500: FW2.16 (the drive came with this one), so I’ll keep it for the innitial testing … but I’ll upgrade afterwards to FW2.C8 (TDB) which is the newest and allows DVD+R bitsetting by default.
TRAXDATA 8x DVD-R, RITEKG05
On PX712: I cannot provide a PIPO scan as both unit no 3 and now unit no 4 refuse to write this media even at 2x. After few seconds I get a “Write Error at 25. Error Writing Lead In (code 037201)” in Plextools or a “session fixation error” in NERO. I will provide instead a FETE scan which I did a while ago. Acording to Plextools this is good media which can be written at 8x, but yet, it will not even write it at 2x! :Z
On NEC3500: Written @8x
Well, surprise surprise, this is not bad media after all
Yes indeed, I’ve switched to Burst Testing. I haven’t showed the POE on the graph as I would have had to rescale it and as such loose the PIE details, but I have saved both versions on my comp, so if you wish I can post the graph showing the POE together with the PIE as well …
I have checked and the burst scan does not influence the PIE results at all. I’ve did a SUM8 scan and compared it with a Burst scan for the same disc, and the results were almost identical with respect to the PIE. The only difference for burst scans is that now you have an idea of the POE errors as well …
PS. All my scans are set to High Quality, both for SUM8 graphs and Burst graphs.
Well, what can I say? I’m very happy so far with my new NEC3500.
This set of results just shows that is not always the media to blame!!! And now I can write well all this media, with compliments to NEC
I’ll update the FW to 2.C8 TDB, so I can bitset DVD+R’s, and then do some more testing, including on TY media. And according to CDRInfo.com NEC will release FW2.18 on Monday
Although the direct NEC support is rather poor from what I’ve heard, the fact that you can use a lot of diferent FW’s from different NEC OEM partners, bringing new strategies all the time, plus the enthusiast support from Liggy, TDB, Herrie and others is just GREAT
CVS… all friends here agreed that all four of your 712a are bad, including this one… so I don’t think it’s fair to compare YOUR 712a with the new 3500. Send your media to me and compare your 3500 with my 712a!!
I see that only your TDK is in the recommended list, so here’s a fresh-from-the-oven-scan of a TDK (RICOH) +R 4x @8x
Disc Regions are 1,2,3,4,5,6,7,8
Media code/Manufacturer ID RICOHJPNR01
Media Product Revision Number 02h
Format Type UDF 1.02
Volume Name DVD_VIDEO
Implementation id DVD Shrink
Recording Date/Time (mm/dd/yyyy) 10/14/2004 13:04:14
Format Capacity 4.36GB(4.68GB)
Book Type DVD-ROM
Media Type DVD+R
Manufacturer Rated Speed 4.0x 5540KBps
Data area starting sector 30000h
Data area end sector 22E1EFh
Linear Density 0.267um/bit
Track Density 0.74um/track
Number of Layers 1
TDK TTG01 @8x = 9:43
Bulkpaq ProdiscS04 @8x = 9:42
Traxdata RITEKG05 @8x - sorry I’ve forgot to write this one down … but probably the time is very close to the above.
Yes, NEC3500 is not as quick as PX712A for 8x writing, because is using the ZCLV writing mode: it starts at 4x, jumps to 6x (at about 25% of the disc) and then just after the middle of the disc finally jumps again to 8x. Besides the ZCLV writing, roughly at each 0.5Gb, the drive slows down briefly when the WOPC kicks in to check the quality of the disc.
Frankly, I don’t care too much about the writing speed … if I get better quality I’m more than happy to trade 1-2 minutes per disc … but that’s just me and clearly others will have a different opinion …
For 6x or 4x writing, the drive uses the same strategy as PX712A. For 12x writing, depending on the writing strategy, some discs use 13x CAV, and the writing time is about 7:14 min. Other discs use 12x ZCLV, and the writing time is about 6:45 min. At 16x, the drive uses the CAV writing mode, and the writing time is between 5:50 - 6:20 depending on the disc. These numbers depend on the media type; also sometimes WOPC kicks in and reduces the speed if that’s deemed necessary.
So clearly, in some cases Plextor is quicker … however, ZCLV writing has its own advantages … if you write 8x media, or overspeed media, since about half of the disc is written at lower than or at the certified disc speed, that half of the disc will have significantly lower PIE errors!!!
You can see that very clearly on TTG01 media … the 4x and 6x region has much lower PIE than the 8x area, due to the lower writing speed. As such, asumming that both units will write equally well at 8x, and you’ll write the same disc on the Plextor, the NEC results will be always better in terms of the overall PIE, because for NEC the PIE in the first half of the disc will be smaller due to the lower writing speed. Of course, you pay for this priviledge by waiting a bit longer for the burn to complete
Regarding your last comment … you are a very difficult man to please
Yeah… I looked over your scans again. You got to admit that even your 3500 does not burn “excelente”. No scan below 20 all the way (or below 15? ). Your final test is to show us TY, MCC, or RICOH with max speed (4x @8x or 8x @12x). If your nec can’t do it, then it’s probably your computer … or bad 3500 ??? . Guys… do you think CVS will go for four 3500??