The Test
Our benchmarks include a few tests to show the performance of each of our test drives. We first use Nero CD-DVD Speed to create a data disc, which tests the write capabilities/performance of the drive. We then run a transfer rate test to benchmark the read capabilities as well as verify the data on the disc.Finally, we use our Plextor PX-712A drive to read the media for PI/PO errors. According to the ECMA standard...
A row of an ECC Block that has at least 1 byte in error constitutes a PI error. In any 8 consecutive ECC Blocks the total number of PI errors before correction shall not exceed 280.Now, some writers may create discs with more than 208 PI errors and they are not necessarily unreadable, but they are not the best quality discs around.
A row is 182 bytes long where the last 10 bytes contain PI (Parity Inner) information. An ECC block is 208 rows long where the last 16 rows contain the PO (Parity Outer) information. This gives us a maximum possible PI error amount of 208 errors per block and for 8 blocks after each other this sum is of course 8 times higher giving a maximum possible amount of 1664 PI errors.
If a row of an ECC Block contains more than 5 erroneous bytes, the row is said to be “PI-uncorrectable” or PIF (Parity Inner Failures).
In any ECC Block the number of PI-uncorrectable rows should not exceed 4.
Our test bed:
AMD Athlon 64 3500+ (2.2Ghz)
Giga-byte GA-K8NXP-SLI
NVIDIA 6600GT SLI Edition (single 128MB card)
1GB (512MBx2) Corsair XMS4400
Plextor PX-712A, Firmware v1.07
Microsoft Windows XP SP2
Nero CD-DVD Speed 4.00
PlexTools Professional XL 3.03
Again, we have taken all of your feedback into consideration and have decided to go back to focusing more on the write quality of each media instead of just the write speeds. Our results are displayed on the following pages. The screenshots are again available in a ZIP files corresponding to the type of media.
Facebook
Twitter
RSS
30 Comments
View All Comments
ssvegeta1010 - Tuesday, August 2, 2005 - link
I could swear I saw this a while ago... where did it go?Hi - Tuesday, August 2, 2005 - link
i saw it the other day toogovernment coverup?
mariush - Wednesday, August 3, 2005 - link
just a glitch in the matrix.. deja-vu :) sorry for off-topic ... couldn't help it..dmxlite - Tuesday, August 2, 2005 - link
Probably had some fixing up to do, cause they know we're picky about spelling and things like that.Hi - Tuesday, August 2, 2005 - link
after looking at them they actually added graphs and stuff, so i see why they took it backjm20 - Sunday, July 31, 2005 - link
Your missing the graph's on pages 4 through 7.Stas - Sunday, July 31, 2005 - link
I'm tired of AT mislabeling pages. This is like the 3rd time I see it happen in the last 3 months. :(Quiksel - Tuesday, August 2, 2005 - link
STFUI swear some of you on here are the most perfection-centered people I've ever seen. Give it a break.
andrep74 - Monday, August 8, 2005 - link
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN""http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitiona...">http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitiona...
andrep74 - Monday, August 8, 2005 - link
Well, at least this is fixed, but how do I delete my own posts???