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Getting done with CD speeds, let’s go over to the next step of the tests – CD-R burn quality.

 
 
C1/C2 error counts and Beta/Jitter graphs for CD-R discs written at 40x
(Gigabyte GO-0804A on the left, the GO-0404A on the right)

So, there are no second encoder errors, not mentioning CU errors, on discs written by each of the drives. That’s good. Then, the GO-0404A is better than the GO-0804A as concerns the maximum amount of C1 errors (5,479 against 23,299) as well as in their peaks (18-20 errors per peak against 70 errors per peak).

The GO-0404A is also better than the other model in the Beta and Jitter parameters. The GO-0804A has bigger Jitter deviations, and the Symmetry parameter starts swinging about after the first third of the disc, getting close to the limit at its end.

So, the junior model produces discs of a much higher quality at the maximum burn speed. Let’s drop the speed to 24x and look for any changes in the results.

 
 
C1/C2 error counts and Beta/Jitter graphs for CD-R discs written at 24x
(Gigabyte GO-0804A on the left, the GO-0404A on the right)

The performance of the GO-0804A has worsened much compared to 40x. The amount of C1 errors remained about the same (24,681), but there’s a surge of C2 errors at the end of the disc. CU errors are missing, though. We’ll see later on if this is a defect of the medium or of the drive itself. As for the GO-0404A, its total C1 error count has grown slightly (to 7,444), but C2 errors are not reported.

The Beta/Jitter parameters are better with the junior model, too. Note that the Jitter suddenly and considerably deviates from the norm where the surge of C2 errors occurs.

Overall, the burn quality of the GO-0804A has worsened at the slower speed, while the second drive has more C1 errors, but smoother Beta/Jitter graphs. In other words, the junior model wins again!

 
 
C1/C2 error counts and Beta/Jitter graphs for CD-R discs written at 16x
(Gigabyte GO-0804A on the left, the GO-0404A on the right)

The drives have exchanged their positions as concerns the number of C1/C2 errors – although the GO-0404A is still better than the GO-0804A in the C1 error count (11,926 against 81,807, and that’s higher than both drives had at the higher speeds), there appears a spike of C2 errors on the disc written by the junior model. This surge is exactly in the same spot where there was an analogous surge on the disc written by the GO-0804A at 24x speed. So far I can only say that you shouldn’t use these drives at the low speeds. The GO-0404A is more or less acceptable at 24x, but the GO-0804A is only any good at 40x.

The Beta/Jitter graphs of the junior device are smoother compared to the other drive, but there’s a Jitter deviation coinciding with the C2 errors surge, although less strong as with the GO-0804A at 24x.

Thus, the junior model is overall better than the GO0804A, although has some problems at 16x speed. Once again, we can’t get along without CD CATS SA3 tests. Will they clear the things up?

 
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