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Taiyo Yuden discs compared
Comparing Taiyo Yuden Master & OEM Discs
An often asked question is what is the difference between Taiyo Yuden OEM and Master grade discs.
To compare them we burned full discs on a Pioneer 110D at 8 speed burn. We then used K-probe to calculate average PI errors.
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The above chart shows the relative PI averages for Ritek, Taiyo Yuden OEM and Taiyo Yuden Master discs - all discs are 8X DVD-R.
PI errors are parity errors detected by the drive when reading the disc.
All discs have PI errors, however normally the drive's internal error correction process works and so the reading process works without a hitch.
Smaller PIs mean better discs.
Where there are excessive errors the drive may need to retry and in extreme cases the drive will not be able to read the block and so either an error will occur or in the case of playing a DVD, there may be hesitations, pixelisation, freezing or crashing out.
What is the difference between Taiyo Yuden Master and OEM grade discs?
In essence Master grade are just about as good as it gets, typically with PI error rates below 0.2
OEM grade discs are still VERY good typically having PI error rates below 0.5
How come Ritek looks so bad?
Ritek only looks bad because it is put in VERY good company. The typical OK disc has PI error rates of like 5.0 or less, so that taken in context the Ritek disc is still very good, just not as good as Taiyo Yuden. Ritek's PI rate is only 1.5.
Is this all that matters?
Not by a long shot, there are many other factors that will affect the playing and life expectancy of a disc.
What can we take from this graph?
Firstly we show only testing of one disc - hardly statistically meaningful!
From our customers experiences we can gather that both Ritek and Taiyo Yuden are very good discs
It appears that Taiyo Yuden very rarely have errors when burning, like 1 in 500++.
Discs as they age have more parity (PI) errors, so if a disc has less parity errors when it's new then it has further to go to have unreadable blocks... and so it follows that it will be a more reliable storage medium and will have a longer life.
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