User manual INTEL DESKTOP BOARD DH67BL

[. . . ] Intel® Desktop Board DH67BL Performance Tuning Guide Revision 1. 0 February 2011 Order Number: G26416-001 Intel Desktop Board DH67BL 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. [. . . ] It is advisable to run the latest BIOS revision to ensure that performance features are at the highest level of optimization. The latest version BIOS can be obtained from http://downloadcenter. intel. com. Instructions for loading the BIOS into the board can also be found at this location. Before initiating performance tuning, ensure that the BIOS setup defaults have been loaded by pressing F9 while in BIOS setup mode and then pressing F10 to save those settings. 9 Intel Desktop Board DH67BL Performance Tuning Guide 3. 3 Obtain the Latest Drivers For the Intel HD Graphics performance settings to function properly, you will need to install the graphics driver for Intel Desktop Board DH67BL. The latest graphics driver version can be obtained from http://downloadcenter. intel. com. Instructions for loading the graphics driver can also be found at this link. The generic driver included on the Microsoft Windows* 7 installation disk will not contain drivers that enable Intel HD Graphics performance tuning. 3. 4 Recovering from an Unstable System Should performance values be set beyond the point of stable system operation, the system may exhibit a failure to boot, a blue screen, a system hang, or a recovery screen. A common Intel HD Graphics instability includes a windows driver crash that may require a system reboot. Exceeding the system stability limits is normal during the performance tuning process and restoring system operation using a BIOS configuration jumper or power removal may be required as explained in the sections below. 3. 4. 1 BIOS Configuration Jumper For a POST failure, you will need to perform a recovery using the BIOS configuration jumper that is provided on the motherboard to boot into BIOS in safe mode. You will need to open the system chassis to access the jumper. Please refer to the Intel Desktop Board DH67BL Product Guide for additional information on using the BIOS jumper for recovery purposes. 3. 4. 2 Remove Power and Reboot For a system hang, resetting your system or removing and reapplying power will allow the system to initiate a reboot. During reboot, press the F2 key to enter BIOS to adjust performance settings in BIOS to restore system stability. 10 Intel Desktop Board DH67BL Performance Tuning Guide 3. 5 Intel Desktop Board DH67BL Performance Tuning Process There are numerous possibilities for desktop board performance tuning. The approach presented is a general starting point and may not be suitable for all cases. Graphics Multiplier Setting 14 Intel Desktop Board DH67BL Performance Tuning Guide Figure 3. 4. Graphics Voltage Setting Adjusted 3. 5. 1. 2 Intel® Turbo Boost Technology Ensure that Intel® Turbo Boost Technology is set to Enable for top performance. 3. 5. 1. 3 Burst Mode Power Limit The Intel HD Graphics is a factor in the amount of power used. If Intel HD Graphics is overclocked and this value is not increased, this may limit turbo performance of the processor cores as Intel HD Graphics may take more of the power budget. 15 Intel Desktop Board DH67BL Performance Tuning Guide 3. 5. 1. 4 Sustained Mode Time This is the time window in which the real time burst mode power is averaged to create the Sustained Mode Power Limit below. Setting this time too long will exceed the capability of the processor heat sink and may result in excess processor heating and subsequent throttling (frequency reduction) to reduce the temperature. A longer time interval in sustained mode may result a longer time interval out of sustained mode while accumulated processor heat is being dissipated. 3. 5. 1. 5 Sustained Mode Power Limit Set the Sustained Mode Power Limit (TDP) for turbo mode. You will have to adjust the TDP to suit your environment such that the processor does not throttle due to excess processor heating at peak performance conditions. If the processor temperature increases steadily while running under load, the processor cooling capability to dissipate heat is being exceeded and you will need to reduce the TDP power limit to prevent throttling. The Intel HD Graphics is a factor in the amount of power used. If Intel HD Graphics is overclocked and this value is not increased, this may limit turbo performance of the processor cores as Intel HD Graphics may take more of the power budget. 3. 5. 1. 6 IGD Current Limit This is a sister function to TDC. [. . . ] Displays the core multiplier to be used when four processor cores are in use. Displays the core multiplier to be used when three processor cores are in use. Displays the core multiplier to be used when two processor cores are in use. Displays the core multiplier to be used when one processor core is in use. Graphics Maximum NonTurbo Ratio CPU Idle State Intel Turbo Boost Technology Burst Mode Power Limit (Watts) Sustained Mode Time (Seconds) Sustained Mode Power Limit (Watts) 4-Core Ratio Limit 3-Core Ratio Limit 2-Core Ratio Limit 1-Core Ratio Limit 23 Intel Desktop Board DH67BL Performance Tuning Guide 24 Intel Desktop Board DH67BL Performance Tuning Guide B Parameter Descriptions for Memory Performance Settings NOTE All multiplier values listed in Table B-1 are applied to the single 100 MHz (default) host clock. [. . . ]