Processor Performance Problem

I test my PC at www.pcpitstop.com, the result says:

The processor performance of this system, 394 MIPS (millions of integer operations per second), is significantly lower than similar systems with the same type of processor running at the same clock rate, which perform at 534.24 MIPS, on average.

How can I make it back to the average performance?

 

How much, and what type of RAM do you have? What OS?

 

Here are some detail of the test info:

System Board Compaq 04D0h X1.0
RAM installed 256 MB
Windows RAM 252 MB
Brand/Model Cyrix 6x86
Nominal Clock Speed 225 MHz
Measured Clock Speed 225 MHz
CPUID Information 0x0600 0x80A135
CPU Load 1%
Level 1 Cache 64 KB
Level 2 Cache 512 KB
Speed Rating 394 (74% of 3956 similar)

 

Sorry, the OS is Win98.

 

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