24x TDK Refex Ultra = Taiyo Yuden

CD-R 74 Reflex Ultra 650 MB :

ATIP: 97m 24s 01f
Disc Manufacturer: Taiyo Yuden Company Ltd.
Reflective layer: Dye (Long strategy; e.g. Cyanine, Azo etc.)
Media type: CD-Recordable
Recording Speeds: min. unknown - max. unknown
nominal Capacity: 656.40MB (74m 43s 01f / LBA: 336076)

Disc Type, Material = CD-R, Cyanine
ATIP Lead-in = 97m 24s 01f
Norminal Capacity = 656.40MB (74m 43s 01f)
Disc Manufacturer maybe = Taiyoyuden,DX Dye
SMART-BURN Speed Limit = 40X

ATIP info from disk - Read by Feurio 1.65.4ß
Recorder: PLEXTOR - CD-R PX-W4012A
ATIP start of lead in: -02:35:74 (sector: -11699)
ATIP start of lead out: 74:43:01 (sector: 336226)
Manufacturer code: 97 24 01 - Taiyo Yuden Company Limited (Type: 1)
Unrestriced use: No
Disc type: Not Rewriteable
Disc subtype: Medium Type A, high Beta category (A+)
Target writing power: 4

Operating System Windows XP Professional
Drive LITE-ON LTR-48125W
Firmware Version VS08
Disc Blank
Capacity 74:43.01

Transfer Rate
Start 18.62x
End 39.91x
Average 30.84x
Type CAV

Time Elapsed : 2:47
Speed:19-40 X CAV (30.84 X average)

TDK 24x - Taiyo Yuden exist in 2 forms: normal and metallic.

The metallic seem to be even better: