what is the difference between DX,SX,LX [closed]

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I am confused with followings

• DX-for desktop
• SX-high performance and cheap
• SL-for laptops

Are they CPU brands?and how they affect to the performance of the computer?

Thanks in advance :)

Answer 1

AFAIK, these denominations existed for both i386 and i486 processors:

i386-DX : full featured 32 bits external bus, 32 bits internal bus i386.

i386-SX : 16 bits external bus, 32 bits internal bus i386.

i386-SL : i386-SX made for latops.

i486-DX : full featured i486, with internal numeric processor.

i486-SX : i486 but with disabled numeric processor.

i486-SL : i486 (don't remember if with or without numeric processor) for laptops.