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[ The PC Guide | Systems and Components Reference Guide | Motherboard and System Devices | System Cache | Cache Transfer Technologies and Timing ]

Comparison of Transfer Technology Performance

The table below shows a summary of the theoretical maximum system performance of the various cache technologies at different system bus speeds. It is theoretical because it is only possible with a chipset that supports it, fast enough cache memory and other factors. Note how, interestingly, synchronous burst is the best at the 60 and 66 MHz bus speeds common on so many Pentium machines today. Despite this it is not nearly as common as pipelined burst cache. Fortunately, PLB cache is only slightly slower, and holds more potential for use at the higher system speeds that should take the market by storm in 1998:

Bus Speed (MHz)

33

50

60

66

75

83

100

Asynchronous

2-1-1-1

3-2-2-2

3-2-2-2

3-2-2-2

3-2-2-2

3-2-2-2

3-2-2-2

Synchronous Burst

2-1-1-1

2-1-1-1

2-1-1-1

2-1-1-1

3-2-2-2

3-2-2-2

3-2-2-2

Pipelined Burst

3-1-1-1

3-1-1-1

3-1-1-1

3-1-1-1

3-1-1-1

3-1-1-1

3-1-1-1

Next: Cache Structure and Packaging


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