Pentium III 500 Platform Comparison

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CPU Performance

Both Winbench99 and Passmark provide CPU specific performance results. Passmark is particularly nice in that it separates out not only integer vs. floating point, but actually compares the them by operation, and also includes tests to test MMX instructions specifically.

Passmark Math Tests

AX6C/DRDRAM

AX6BC/SDRAM

AX63/SDRAM

AX63/VCSDRAM

Add

93.7

94.2

92.5

92.3

Subtract

93.9

94.2

92.6

92.5

Multiply

89.7

90.0

88.3

88.3

Division

13.1

13.1

13.1

13.1

FP Add

85.9

86.0

84.6

84.3

FP Subtract

85.9

86.0

84.6

84.6

FP Multiply

85.1

85.2

83.8

83.7

FP Division

14.9

14.9

14.9

14.9

Math Mark

64.4

64.6

63.5

63.4

Passmark MMX Tests

AX6C/DRDRAM

AX6BC/SDRAM

AX63/SDRAM

AX63/VCSDRAM

Add

164.2

165.5

162.8

163.4

Subtract

165.3

163.6

163.6

163.2

Multiply

162.2

162.3

159.5

159.5

MMX Mark

84.3

83.4

82.4

82.5

WinBench99

AX6C/DRDRAM

AX6BC/SDRAM

AX63/SDRAM

AX63/VCSDRAM

CPU Mark99

38.3

38.7

38.2

38.3

FPU WinMark

2560

2560

2550

2560

Even though the same processor was used on all platforms, the differences in the other subsystems appear to have an effect on the CPU performance. Not all of this difference can be attributed directly to memory bandwidth or throughput, since we have seen that they are fairly close between platforms. It would seem that latency has a significant impact here also. If we can rely upon the latency values provide in the addendum by Cachemem, there would seem to be some correlation here.


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