User manual INTEL DESKTOP BOARD DP67BG

[. . . ] Intel® Desktop Board DP67BG Performance Tuning Guide Revision 1. 0 December 2010 Order Number: G24387-001 Intel Desktop Board DP67BG Performance Tuning Guide WARNING Altering clock frequency and/or voltage may (i) reduce system stability and useful life of the system and processor; (ii) cause the processor and other system components to fail; (iii) cause reductions in system performance; (iv) cause additional heat or other damage; and (v) affect system data integrity. Intel has not tested and does not warranty the operation of the processor beyond its specifications. WARNING Altering PC memory frequency and/or voltage may (i) reduce system stability and useful life of the system, memory and processor; (ii) cause the processor and other system components to fail; (iii) cause reductions in system performance; (iv) cause additional heat or other damage; and (v) affect system data integrity. Intel assumes no responsibility that the memory included, if used with altered clock frequencies and/or voltages, will be fit for any particular purpose. Check with the memory manufacturer for warranty and additional details. INFORMATION IN THIS DOCUMENT IS PROVIDED IN CONNECTION WITH INTEL® PRODUCTS. [. . . ] Screen Displayed When System is Started With the Back to BIOS Button Depressed 3. 4. 3 BIOS Configuration Jumper A third recovery option is to use the BIOS configuration jumper that is provided on the board to allow the user to force the board to boot to BIOS Setup in a safe mode. The user will need to open their system chassis to access this jumper. Refer to the Intel Desktop Board DP67BG Product Guide for additional information on using the BIOS jumper for resetting purposes. 3. 4. 4 Remove Power and Reboot For a system hang, resetting your system or removing and reapplying power and rebooting will allow the system to initiate a reboot. The watchdog timer, the Back to BIOS button, the BIOS configuration jumper, or pressing the F2 key at the setup screen prompt will allow the user to adjust performance settings in BIOS to restore system stability. 13 Intel Desktop Board DP67BG Performance Tuning Guide 3. 5 Intel Desktop Board DP67BG Performance Tuning Process 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. The settings made for a parameter may affect which settings will work for another parameter. For example, increasing the system clock frequency may require that previous adjustments to the processor turbo ratios be revised downward to maintain processor stability. 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. 1 through 3. 5. 9. 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. Archive performance settings. 3. 5. 1 Configure the BIOS for Performance Tuning It is recommended that non-essential interfaces (such as, onboard audio, USB, LAN, external SATA, etc. ) be disabled when performance tuning to simplify the process. Once the performance parameters have been optimized, the onboard features can be re-enabled. Scroll to “Configuration” > “On-Board Devices” and use the submenus to disable these features (refer to Figure 3. 3). NOTE Do not disable the USB port where the keyboard is connected. 14 Intel DP67BG Desktop Board Performance Tuning Guide Figure 3. 3. System Setup Leave Enhanced Intel SpeedStep® Technology and CPU C States enabled in the BIOS as shown in Figure 3. 4. Turbo ratios require Enhanced Intel SpeedStep Technology enabled in order to function. Disabling C states prevents the processor from entering 1, 2, or 3 core ratios. Only the 4 core ratio will have an effect when C states are disabled. 15 Intel Desktop Board DP67BG Performance Tuning Guide Figure 3. 4. Power Settings Performance tuning options are located in the menu section labeled “Performance”. Reading and agreeing to the disclaimer by selecting “Yes”, as shown in Figure 3. 5, allows the detailed BIOS performance menu to be displayed. 16 Intel DP67BG Desktop Board Performance Tuning Guide Figure 3. 5. Performance Tuning Disclaimer From the Performance page, processor tuning options are under the “Processor Overrides” section shown in Figure 3. 6 below. [. . . ] It is recommended that this always be set higher than the Sustained Mode Power Limit. Defines a window of time (in seconds) the processor will use to average the power for comparison to the Sustained Mode Power Limit. Defines the maximum sustained power (in watts) as averaged over the Sustained Mode Time that can be used by the processor when turbo mode is active. If the processor exceeds this value, turbo mode will be disengaged and the maximum nonturbo ratio will be used until the power level average drops below the limit. [. . . ]