CD-Rom prefetch tweak

Discussion in 'Windows Desktop Systems' started by justin.s, Mar 13, 2002.

  1. justin.s

    justin.s Guest

    Im sure a lot of you know about this tweak for your cdrom/dvd drives:


    32x 1792 00,07,00,00 00000700
    40x 2240 c0,08,00,00 000008c0

    I cant get the tweak to work. In XP the values are in HEX, and Sandra CD-Rom benchmark says the prefetch is optimized for a 13x cd-rom. I've tried a few different values, but none work at all. Has this tweak changed at all with XP from 98/ME??

    Thanks in advance,
  2. Qumahlin

    Qumahlin Moderator

    try this


    Look for that registry key, if not there, we must create a new key, then add the following values

    CacheSize, this must be added as a binary value, then type in this value: ff ff 00 00

    Prefetch, this key must be added as a DWORD value, then type in this value: 4000 hex

    PrefetchTail, this key must be added as a DWORD value, then type in this value: 4000 hex
  3. Barbarian

    Barbarian Guest

    You sure the prefetch is cool, mines listed as binary.....
  4. Dirk Diggler

    Dirk Diggler Guest

    Both are valid, but the DWORD way is the way to go.
  5. justin.s

    justin.s Guest

    I tried those settings Qumahlin, but Sandra still says optimized for 13x, and only scores 1600 or so for my 32x. Back in Win98 (Win2000 also i believe) I didnt have these problems, and was scoring in the 2400 range.