204
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For Socket 7 CPU, one burst data read requires four QWord (Quad-word, 4x16 = 64 bits).
PBSRAM only needs one address decoding time and automatically sends the remaining QWords
to CPU according to a predefined sequence. Normally, it is 3-1-1-1, total 6 clocks, which is faster
than asynchronous SRAM. PBSRAM is often used on L2 (level 2) cache of Socket 7 CPU. Slot 1
and Socket 370 CPU do not need PBSRAM.
P
P
C
C
1
1
0
0
0
0
D
D
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SDRAM
DIMM that supports 100MHz CPU
FSB
bus clock.
P
P
C
C
1
1
3
3
3
3
D
D
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SDRAM
DIMM that supports 133MHz CPU
FSB
bus clock.
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P
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A file format for electronic document, PDF format is independent from platform, you can read PDF
file under Windows, Unix, Linux, Mac … with different PDF reader. You can also read PDF file by
web browser such as IE and Netscape, note that you need to install PDF plug-in first (Included in
Acrobat Reader).
