Ritek 8x only burns at 4x

[jeryray]

I have some riteks from newegg that will only write at 4x

DVDinfopro

RITEKG05
Format Capacity Blank Disc
Free Blocks 412352512
Free Capacity 4.38GB(4.71GB)
Book Type DVD-R
Media Type DVD-R
Manufacturer Rated Speed 8.0x 11080KBps
Available Write Descriptor CLV 4.0x 5540KBps
Write Strategy Speed 4.0x 5540KBps

I used two different players, lg 4160 and sony dru530 latest firmware.
Thesed rives work with other brands of media and work fine with ritek 4x
Winxp pro 1gig ram 3.2ghz intel

latest nero.

Are these disks bad?

[on30trainman]

I have Ritek G05 media that I also got from Newegg. They write at 8X with my Pioneer A07 both with Nero 6 and DVD Decrypter.
DVD Indentifier says (8X Cannot be Detected), but that has also happened with other 8X media - don't know what it means.
Has other 8X media written at 8X for you? If so, what brands?

[RickTheRed]

What are you burning - video files, iso files,etc?
I've notived that some disk/file combination does not burned at 8x when they should. With Nero, Best speed was reached with Video files.Stuck at 4x with ISO.
I do not know why.

[jeryray]

OK, thanks for the replies. The files are from dvd shrink.

The media that has burned correctly is memorex.

[on30trainman]

jeryray,
I have burned Ritek G05 from DVD Shrink - it uses Nero. Although the burning rate is not displayed the total burn time was consisent with about 8X - definitely much faster than with 4X media I have used. I also generated an .ISO file with Author mode in DVD Shrink using a DVD Decrypter rip and then burned with Decrypter. The burn started at 4X, soon went to 6X and then went to 8X about 1/3 through and stayed there until completed.
The above have been my experiences with Ritek G05 media and a Pioneer A07 burner.