2x CD-ROM definition of 2x CD-ROM in the Free Online Encyclopedia.

CD-ROM drives

CD-ROM drives, which today typically means a CD-RW drive that is a combo CD-ROM, CD-R and CD-RW drive, come in a variety of speeds. The original drive (1x) transferred data at 150KB per second. By doubling the spindle speed (RPMs) for 2x drives, the transfer rate increased to 300KB/sec and has been increasing ever since. See CD-ROM and DVD drives.

   X Rating    Data Transfer Rate

      1x       150 Kilobytes/sec
      2x       300 Kilobytes/sec
      4x       600 Kilobytes/sec

      8x       1.2 Megabytes/sec
      10x      1.5 Megabytes/sec
      12x      1.8 Megabytes/sec
      20x      3.0 Megabytes/sec
      36x      5.4 Megabytes/sec
      40x      6.0 Megabytes/sec
      48x      7.2 Megabytes/sec
      50x      7.5 Megabytes/sec
      52x      7.8 Megabytes/sec

What Do 40/12/48 or 40x/12x/48x Mean?
CD-RW drives have three speeds that are designated with three numbers or sometimes three "X" numbers; for example, 40/12/48 or 40x/12x/48x." The numbers are write/rewrite/read speeds.

    First X     /  Second X     /  Third X
    CD-R write  /  CD-RW write  /  CD-ROM read

A Lotta X's

This is the label from a Memorex combo CD and DVD drive in 2005. Each "X" number means the speed for that format is X times 150KB for CDs and X times 1.35MB for DVDs.

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No references found	The minimum hardware and software requirements for the CD are as follows: Pentium machine, 16MB memory, external speakers, a display-size setting of 800 x 600, 16-bit color, 2X CD-ROM drive, Windows 95 with the MM player installed, and a 14-inch monitor. Onsite Sewage Treatment and Disposal System (OSTDS) Interactive CD by Journal of Environmental Health 0 with Service Pack 3 or higher; Pentium (or better); 32 MB RAM; 60 MB disk space; sound card; speakers; VGA monitor with support for High Color or True Color settings and at least 800 X 600 resolution; 2X CD-ROM drive; microphone required for recording; browser and Internet connection required to link to online resources. 101 Languages of the World Offers People the Chance to Learn Common ... by Business Wire The minimum hardware and software requirements for the CD are as follows: a Pentium machine, 16 megabytes of memory, external speakers, a display-size setting of 800 x 600, 16-bit color, 2X CD-ROM drive, Windows 95 with the MM player installed, and a 14-inch monitor. Onsite sewage treatment and disposal system (OSTDS) interactive CD. ... by Journal of Environmental Health	21-acetoxypregnenolone 21-centimeter line 24-bit color 24/7 240 Hz 24p 24x7 27 MHz 2780 28.8 286 286/12 286/16 29000 2B+D 2B1D 2B1Q 2D 2D bar code 2D graphics 2G+ 2K 2NF 2RU 2U 2x CD-ROM 3',5'-AMP 3+Open 3+Share 3,3'-thiodiproprionic acid 3,4-benzpyrene 3,4-dinitrobenzoic acid 3,5-diaminobenzoic acid 3,5-dibromosalicylaldehyde 3,5-diiodosalicylic acid 3-acetamido-4-hydroxybenzenearsonic acid 3-amino-2,5-dichlorobenzoic acid 3-amino-2-naphthoic acid 3-aminophthalic hydrazide 3-aminopyridine 3-chloro-1,2-propanediol 3-D sound 3-heptanol 3-heptanone 3-hydroxyflavone 3-hydroxytyramine hydrobromide 3-methylindole 3-methylpentane 3-methylsalicylic acid 3-tier 3.3v	2STP 2TDLM 2TH 2TM 2U 2U2 2up 2V 2V2PL 2VF 2VO 2VP 2VPCP 2W 2wd 2WF 2WGS 2WLRB 2WLS 2WLTU 2WO 2WS 2WSMS 2X 2x CD-ROM 2x DVD 2x DVD 2x DVD 2x4 2xAGP 2xAGP 2XG 2XGG 2XO 2XtM 2YC3 2YID 3 3 3 3 3 (number) 3 (number) 3 (year) 3 6-BisDimethylamino Acridinium Chloride 3 6-BisDimethylamino Acridinium Chloride 3 A Syndrome 3 AD 3 and 9 o'clock staining 3 Angels Broadcasting Network 3 April 3 August 3 Bearing Swivel Module 3 body problem 3 by 5

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The minimum hardware and software requirements for the CD are as follows: Pentium machine, 16MB memory, external speakers, a display-size setting of 800 x 600, 16-bit color, 2X CD-ROM drive, Windows 95 with the MM player installed, and a 14-inch monitor.

Onsite Sewage Treatment and Disposal System (OSTDS) Interactive CD by Journal of Environmental Health

0 with Service Pack 3 or higher; Pentium (or better); 32 MB RAM; 60 MB disk space; sound card; speakers; VGA monitor with support for High Color or True Color settings and at least 800 X 600 resolution; 2X CD-ROM drive; microphone required for recording; browser and Internet connection required to link to online resources.

101 Languages of the World Offers People the Chance to Learn Common ... by Business Wire

The minimum hardware and software requirements for the CD are as follows: a Pentium machine, 16 megabytes of memory, external speakers, a display-size setting of 800 x 600, 16-bit color, 2X CD-ROM drive, Windows 95 with the MM player installed, and a 14-inch monitor.

Onsite sewage treatment and disposal system (OSTDS) interactive CD. ... by Journal of Environmental Health

CD-ROM drives (redirected from 2x CD-ROM)

CD-ROM drives
(redirected from 2x CD-ROM)