Performance Tuning Guide

Intel DX58SO2/DX58OG Desktop Board Performance Tuning Guide
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4.2 Intel Core i7-920 Non-Extreme Edition
Processor on Intel Desktop Board DX58SO2
Figure 4.2 shows the BIOS settings to achieve a processor speed of 4.09 GHz with an
Intel Core i7-920 processor. A host clock setting of 186 MHz was used. A memory
speed of 1489 MHz was obtained using a memory multiplier of 8 when combined with
the host clock setting of 186 MHz. With the Intel Core i7-920 processor, the QPI data
strap is locked at 4.8 GT/s, resulting in an overall QPI data rate of 6.701 GT/s when
combined with the 186 MHz host clock setting. No processor thermal throttling
occurred during stress testing with these settings.
These results were obtained on an Intel Desktop Board DX58SO2 with XMP 2133
memory installed. The board was located on an open bench top and the processor
was air cooled using an Intel tower model E88216-001 fan heatsink.
Figure 4.2. 4.09 GHz on an Intel Desktop Board DX58SO2 with an
Intel Core i7-920 Processor Using Host Clock Changes