Here are some real life performance tests for the brand new Verbatim 24x 700MB CDRW media.
This stuff is growing off trees over here.
Posting this around a few forums so people can see what to expect from Ultra Speed CDRW media and drives.
TEST 1 - BRAND NEW MEDIA
2 brand new Verbatim 24x 700MB CDRW, one burned at 16x and the other 24x.
See sig Liteon 48246K F/ware SK0A
BRAND NEW. 1st Time burn
Disc Type, Material = HSCD-RW, Phase Change
ATIP Lead-in = 97m 34s 24f
Nominal Capacity = 702.83MB (79m 59s 74f)
Disc Manufacturer maybe = Mitsubishi
SMART-BURN Speed Limit = 24X
2106 Files, 238 Folders = 700MB recorded data
Recording Time (Might be of interest as this is the 6K SFF drive)
16x: 5m30s CLV
24x: 5m14s CAV
Data recovery back to hard drive was 17x AVERAGE read (non sequential) for both the 16x and 24x burns on 2 different brands of DVD/CDROM readers.
32x AVERAGE sequential read for both burns on those same readers.
CD speed results:
Passes scan disk and quality test with perfect results.
CD Doctor (FULL SPEED READ)
Recorded at 16x
Recorded at 24x
Tested a disk that has been written to 10+ times with quick erase only. Very similar results. In fact much lower C1 values but the shape of the graph the same (see test 2 below). Media seems to retain it’s quality for multiple writes.
Full erase not needed - seems to make little difference to final burn.
Scan disk can be a bit flaky and give different results when you run it multiple times on the same disk. One time it might show a yellow sector, the next all green, the next several yellow - all on the same burn. Approx. 4/5 times the disk checks all green.
No C2 errors to report after multiple writes to different disks.
One burn resulted in slower reading and a yellow band in scan disk. After a quick erase and burn, the disk was back to normal giving green on several subsequent burns.
TEST 2 - 5 SUBSEQUENT WRITES ON USED MEDIA
One “used” Verbatim 24x 700MB CDRW. Written to 10 times with different data before undergoing these tests.
Quick erase only before each subsequent write.
AGAIN FULL SPEED READ IN CD DOC.
Write 1 - 24x CD speed data write
Write 2 - 24x 2106 Files, 238 Folders = 700MB recorded data
Write 3 - 24x CD speed data write
Write 4 - 16x 2106 Files, 238 Folders = 700MB recorded data
Write 5 - 24x CD speed data write
After several writes, it’s actually performing better in its “used” state compared to when it was brand new!
Again all green and no slow downs in cd speed scan and quality check.
Finally, after 15 writes, here is the standard 8x CD Doc read test, although not a very good indication of real life performance.