CD-ROM/CD-R(W) "Prefetch"
Registry values:CD-ROM Speed Decimal Hex DWORD
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4x [Default] 228 e4,00,00,00 000000e4
8x 448 c0,01,00,00 000001c0
12x 672 a0,02,00,00 000002a0
16x 896 80,03,00,00 00000380
20x 1120 60,04,00,00 00000460
24x 1344 40,05,00,00 00000540
32x 1792 00,07,00,00 00000700
40x 2240 c0,08,00,00 000008c0
44x 2462 a0,09,00,00 000009a0
48x 2688 80,0a,00,00 00000a80
52x 2912 60,0b,00,00 00000b60
60x 3372 2c,0d,00,00 00000d2c
72x 4104 08,10,00,00 00001008
CREDITS: 12x, 20x, 44x and 52x values courtesy of Spiny.And a little "bonus" [:)]: optimal read-ahead buffer
size values for DVD-ROM/DVD-R(W)/DVD-RAM drives up to 16x speed:DVD-ROM/DVD-R(W)/DVD-RAM "Prefetch" Registry values:DVD Speed Decimal Hex DWORD
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1x 448 c0,01,00,00 000001c0
2x 896 80,03,00,00 00000380
4x 1792 00,07,00,00 00000700
6x 3584 80,0a,00,00 00000a80
8x 4096 00,10,00,00 00001000
10x 5376 00,15,00,00 00001500
12x 6400 00,19,00,00 00001900
16x 8192 00,20,00,00 00002000