Performance Tuning Guide

Intel DX58SO2/DX58OG Desktop Board Performance Tuning Guide
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3.5.3.5.2 Increase Host Clock Frequency
From the BIOS performance screen, gradually increase the frequency of the host clock
until the board is unable to boot. If you are using a non-Extreme Edition processor,
use the settings provided in the table included with the simplified tuning procedure,
Section 3.5.2 as an initial starting point.
In Figure 3.7, the host clock frequency was changed using the BIOS screen as shown.
The column labeled “Proposed” shows the results of increasing the system clock
setting from 133 MHz to 136 MHz with the resulting processor speed increase from
3.47 GHz to 4.50 GHz ((core ratio multiplier of 33) x (136 MHz host clock frequency) =
4.488 or about 4.50 GHz).
Figure 3.7. Performance BIOS Screen Showing Multiplier (Core Ratios)
Increased to 33 and Host Clock Frequency Increased to 136 MHz
NOTE
Since the speeds of the other board subsystems are derived from the host clock, the
QPI data rate and memory speed will be increased as well.