Performance Tuning Guide

Intel DX58SO2/DX58OG Desktop Board Performance Tuning Guide
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3.5.3.5.1 Increase Core Ratio Limits
Gradually increase the multiplier for each of the core ratio limits. Four core processors
will have core ratio settings for cores 1-4. Six core processors will have core ratio
settings for cores 1-6. The ratio multiplied by the host clock frequency determines the
processor frequency that will be obtained. Making these settings is a trial and error
process. If ratios are set too high, the processor will be unstable and will not operate.
Reducing the ratios or increasing the CPU Voltage Override (Section 3.5.3.2.2) and/or
the TDC Current Limit Override (Amps) (Section 3.5.3.2.9) can be used to restore
processor stability.
For the default host clock setting of 133 MHz, Table 3-1 shows the resulting processor
frequency with various multiplier values.
Table 3-1. Resulting CPU Frequency Values for Various Multipliers
Multiplier Resulting CPU Core Frequency (GHz)
20 2.66
21 2.80
22 2.93
23 3.06
24 3.20
25 3.33
26 3.46
27 3.60
28 3.72
29 3.86
30 4.00
31 4.12
32 4.26
33 4.40
34 4.52
35 4.66