CD-R certificati 32-40x, qualità inaccettabile.

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News del 18 Giugno 02 Autore: Fabionapoli
Il sito tedesco ha pubblicato i risultati di un esaustivo test di masterizzazione effettuato su supporti certificati per l'incisione a velocità 32-40x. Come potevamo aspettarci i risultati sono stati deludenti per l'elevata percentuale di errori occorsi. I test sono stati effettuati su masterizzatori Lite-On e Plextor. I risultati:
  • Verbatim CD-R 700 MB 32x:Error rates skyrocket after the first half of the disc at 32x. Lowering the speed to 20x or 16x doesn't help much. Especially prone to this are the Plextor and Benq 40x drives. Lite-On 40x works a bit better with this disc. Average BLER is 26.43 errors/second. High. Good CD-Rs like the Teac 24 have 0.77 errors/sec here. Maximum was a surprising 196 errors/sec: immensely high! The hardware CD-R tester asserted both E22 and E32 (uncorrectable) errors - very bad! Atip (Absolute Time in Pregroove): 97m 34s 22f
  • Verbatim CD-R 700 MB 40x: These Mitsubishi Chemicals CD-Rs are supposed to be for high recording speeds. Then Benq-burner, however, accepts only 32x speed, and with high error rates. Plextor and Lite-On 40x burners managed to burn with 40x, but with exorbitant error rates (the Lite-On was a bit better). Average BLER is 59.91 errors/sec, this is too high for reliable data archiving. Maximum BLER is 433.17 errors/second: Way, way above spec... it's not funny anymore! The hardware analyzer detected E22-Errors, at least there were no E32-errors. Still, quality rating can only be 'very poor'. Atip (Absolute Time in Pregroove): 97m 34s 23f
  • Philips CD-R 80 40x:It seems that Philips doesn't test their media. In the Benq 40x burner, the error rates were always above spec, same with the Plextor 40x. Data loss is likely. The Lite-On managed to do analyzable runs at 40x and 32x. BLER is 143 errors/sec average, 363.67 errors/sec maximum: A more than poor performance! To make things worse, the analyzer drive detected E22 and E32-errors. This CD-R is basically garbage. Atip (Absolute Time in Pregroove): 97m 15s 17f
  • Fujifilm CD-R 1-40x:A CD-R with varying results. The 40x-max Benq burner decided to use 16x speed maximum, but with acceptable error rates. The Lite-On 40x burner wanted to use 32x, and this was a good decision, error rates are bearable. Only the Plextor goes all out and uses full 40x-speed for this CD-R: Bad move. Although the average BLER of 9.92 errors/sec is still okay, the maximum BLER of 103.17 errors/sec is out of question! Furthermore, there were E22 and E32-errors with the Plextor at 40x. Conclusion: This CD-R is unusable at 40x, the speed with the Plextor should be lowered manually by any means. Atip (Absolute Time in Pregroove): 97m 26s 45f
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