Performance Tuning Guide

Intel DX58SO2/DX58OG Desktop Board Performance Tuning Guide
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6. Increasing the host clock frequency will increase the memory frequency. It may be
necessary to reduce the memory speed to restore memory stability. This can be
done in the Performance Memory Profiles submenu by selecting Manual – User
Defined and then scrolling down to the memory multiplier. The memory frequency
can be reduced by selecting a lower memory multiplier value.
7. If you have compatible XMP based memory, an XMP profile can be selected from
the Memory settings BIOS subpage under the performance settings. Note that XMP
profile memory frequencies will also be increased when the host clock frequency is
increased. See http://www.intel.com/consumer/game/extreme-memory.htm
for
more information on XMP memory.
8. Press the F10 key when you are ready to save settings and exit BIOS. The system
will automatically attempt reboot with the new performance settings enabled. If
the system fails to boot, see Section 3.4 on recovering from an unstable system.
3.5.3 Detailed Performance Tuning Process Steps
There are various sequences of steps possible for doing board performance tuning.
The approach presented in this guide is a general starting point, but may not be
optimal for all cases.
Intel Desktop Board DX58SO2 and Intel Desktop Board DX58OG allow performance
tuning using the host clock, turbo ratios, or a combination of both. The applicable
tuning method depends on what type of processor is being used. If a non-Extreme
Edition processor is being used, then performance tuning will be done by increasing
the frequency of the host clock. If an Extreme Edition processor is being used, then
performance tuning using turbo ratios, host clock settings, or a combination of turbo
ratios and host clock settings are options.
A full processor and memory tuning sequence consists of the steps suggested below.
Depending on your objectives, it may not be necessary to complete all of the steps in
this sequence. More discussion about these steps is included in Sections 3.5.3.1
through 3.5.3.13. Detailed descriptions of the various BIOS controls are included in
Appendix A, Table A-1. Checking system stability appears frequently during this
sequence. This check ensures that the work done up to that point will provide stable
system performance. If instability is encountered, the source of the problem can be
more easily determined if regular stability checks have been completed.
Performance tuning is an iterative process. The settings made for one parameter may
affect which settings will work for another parameter. For example, increasing the
host clock frequency may require that previous tuning adjustments for system
memory be revised to maintain memory stability. The sequence of steps below was
designed to minimize the number of iterations required for performance tuning.
1. Configure the BIOS for performance tuning.
2. Set processor overrides (voltage, current and power).
3. Decrease memory speed.
4. Decrease QPI data rate.
5. Increase core ratio limits and/or host clock frequency.