This article is from the CD-Recordable FAQ, by Andy McFadden (firstname.lastname@example.org) with numerous contributions by others.
CDR2000 (2x2/512K;SCSI, based on the Ricoh RS1060C)
CDR2224 (24x2x2/2MB;IDE, based on JVC XR-W2080?)
CDR4210 (4x2/1MB;SCSI, based on the Panasonic CW-7501)
CDR4224 (24x4x2/2MB;IDE, based on a JVC XR-W4080)
CDR?? "CD Studio" (24x4x4/2MB;IDE, based on ??)
CDR6424 (24x6x4/2MB;IDE, based on Ricoh 7060A)
CDR8432 (32x8x4/2MB;IDE, based on PX-W8432T; also 8433/8435/8438/8439)
CDR8433 (same as 8432, based on Panasonic CW-7585)
CDR8435 (same as 8432, based on Samsung SW-208)
CDR8438 (same as 8432, based on Samsung ??)
CDR8439 (same as 8432, based on Panasonic CW-7586)
CDR121032 #1 (32x12x10/2MB;SCSI, based on Plextor PX-W1210)
CDR121032 #2 (32x12x10/2MB;SCSI, based on Lite-On LTR-1210)
CDR161040 (40x16x10/2MB;IDE, based on ??)
CDR241040 (40x24x10/2MB;USB or FireWire, based on ??)
CD-RW 52.24.52 (52x52x24/?MB;IDE)
CD-RW 52-32-52x (52x52x32/?MB;IDE)
Creative sold several drives with the 32x8x4 rating, starting with
the Plextor-based 8432. According to some information [formerly at]
http://www.ping.be/satcp/writer04.htm, the 8433, 8435, 8438, and 8439 are
similar but different devices. Looks like they did something similar with
the 32x12x10 drive.
Generally speaking, reading the retail box won't tell you what's inside.