Intel DZ77GA-70K Performance Tuning Manual
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Summary of Contents for Intel DZ77GA-70K
- Page 1 Intel® Desktop Boards DZ77GA-70K, DZ77RE-75K Performance Tuning Guide Revision 1.0...
- Page 2 Contact your local Intel sales office or your distributor to obtain the latest specifications and before placing your product order. Intel, Core, Pentium, and the Intel logo are trademarks of Intel Corporation in the U.S. and other countries. *Other names and brands may be claimed as the property of others.
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Page 3: Table Of Contents
BIOS Configuration Jumper............ 15 3.4.4 Remove Power and Reboot ............ 15 3.5 Intel Desktop Board DZ77GA-70K Tuning using Over-Clocking Assistant™16 3.6 Intel Desktop Board DZ77GA-70K Performance Manual Tuning Process ... 17 3.6.1 Configure the BIOS for Performance Tuning ......18 3.6.1.1 CPU Voltage Override Type........ - Page 4 B Parameter Descriptions for Memory Performance Settings .34 Figures Figure 2.1. Intel Desktop Board DZ77GA-70K Simplified Block Diagram ..8 Figure 3.1. Screen Displayed When the Watchdog Timer Detects an Issue ..14 Figure 3.2. Screen Displayed When System is Started With the Back to BIOS Button Depressed................
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Page 5: Introduction
Intel Extreme Tuning Utility for performance tuning will find the system monitoring and stress testing features included with this software to be useful. This remainder of this guide focuses on using the BIOS for performance tuning of Intel Desktop Board DZ77GA-70K. The main performance tuning focus areas include the ®... - Page 6 Intel DZ77GA-70K / DZ77RE-75K Desktop Board Performance Tuning Guide...
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Page 7: 3Rd Generation Intel
A system clock that drives all Desktop Board components is integrated into the Intel Z77 PCH. The Intel Z77 PCH provides support for a PCI Express x1 interface, a PCI* bus, SATA, USB, and other system interfaces. -
Page 8: Figure 2.1. Intel Desktop Board Dz77Ga-70K Simplified Block Diagram
Intel DZ77GA-70K / DZ77RE-75K Desktop Board Performance Tuning Guide Figure 2.1. Intel Desktop Board DZ77GA-70K Simplified Block Diagram... - Page 9 Intel DZ77GA-70K / DZ77RE-75K Desktop Board Performance Tuning Guide...
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Page 10: Intel Desktop Board Dz77Ga-70K Performance Tuning Using Bios Setup
Fully unlocked processor numbers end in the letter “K” and have maximum performance tuning potential using the system clock and turbo ratios. All 3rd generation Intel Core i5 and 3rd generation Core i7 processor numbers that do not end in the letter “K” are partially unlocked. Partially unlocked processors allow system clock and limited turbo ratio increases. -
Page 11: System Cooling
External graphics tuning is specific to the graphics card manufacturer and cannot be done using either the Intel Desktop Board DZ77GA-70K BIOS or the Intel Extreme Tuning Utility. Earlier performance tuning methods where the frequency of the system clock was increased are now not the most effective means of boosting performance with the processors in the 3rd generation Intel Core processor family that support turbo mode. -
Page 12: Accessing Bios Setup
Intel Extreme Tuning Utility. The user may have different performance setting profiles that are needed, depending on the software applications being run. The Intel Desktop Board DZ77GA-70K BIOS supports a single profile. The user may either go into BIOS and change the performance settings as needed or utilize the profile storage capability in the Intel Extreme Tuning Utility. -
Page 13: Recovering From An Unstable System
Figure 3.1 will be displayed. In addition, on the DZ77GA-70K board at the top of the Diagnostic LED bank, a red LED will illuminate when the Watchdog Timer is activiated. The user can then go into the BIOS screen and manually reset performance parameters or use the F9 key to reset all BIOS defaults to restore system stability. -
Page 14: Back To Bios Button
BIOS jumper. When the Back to BIOS button is depressed, both the button and a red LED located on the DZ77GA-70K board Diagnostic LED bank will illuminate. The F9 key can then be used to restore all BIOS settings to defaults at this point or specific performance settings can be individually revised by the user to restore system stability. -
Page 15: Bios Configuration Jumper
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 DZ77GA-70K Product Guide for additional information on using the BIOS jumper for resetting purposes. -
Page 16: Intel Desktop Board Dz77Ga-70K Tuning Using Over-Clocking Assistant™16
Intel Desktop Board DZ77GA-70K Tuning using Over-Clocking Assistant™ Included in the DZ77GA-70K Visual BIOS™ setup program is an automated method to over clock using pre-tested built in settings. These settings have been extensively developed and tested in Intel’s over clocking laboratory and will work with most system configurations. -
Page 17: Intel Desktop Board Dz77Ga-70K Performance Manual Tuning Process
Intel DZ77GA-70K / DZ77RE-75K Desktop Board Performance Tuning Guide To increase the processor frequency using the Overclocking Assistant, simply use the mouse to move the slider until the desired frequency is shown on the main display. Intel Desktop Board DZ77GA-70K Performance Manual Tuning Process There are various sequences of steps possible for doing board performance tuning. -
Page 18: Configure The Bios For Performance Tuning
Intel DZ77GA-70K / DZ77RE-75K Desktop Board Performance Tuning Guide 3.6.1 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. -
Page 19: Figure 3.6. Processor Overrides Page Showing Defaults
Intel DZ77GA-70K / DZ77RE-75K Desktop Board Performance Tuning Guide From the Performance page, processor tuning options are under the “Processor Overrides” section shown in Figure 3.4 below. Also see Appendix A for a table summarizing these settings and their effects. Sections 3.6.1.1 through 3.6.1.8 include guidelines for setting the processor override parameters. -
Page 20: Cpu Voltage Override Type
Intel DZ77GA-70K / DZ77RE-75K Desktop Board Performance Tuning Guide 3.6.1.1 CPU Voltage Override Type Two methods are provided for increasing the processor voltage, Processor Voltage Override and Voltage Offset. Override commands the VR controller to supply a constant voltage to the processor ignoring SVID requests from the processor. Offset tells the VR controller to take the voltage requested by the processor and add extra voltage to it. -
Page 21: Sustained Mode Power Limit
NOTE Only fully unlocked or partially unlocked processors in the 3rd generation Intel Core processor family allow modifying the multiplier (turbo ratios). See Section 3.1 for additional details on tuning capability with the various processors. Set the highest ratio to be used by turbo mode for each of the 1, 2, 3, and 4 core ratio limits. -
Page 22: Check Stability
When the system can successfully boot into the operating system, various software applications can be used to stress the processor, memory, and other sub-systems. When processor cores are idle, the Intel Core processors will operate at a reduced multiplier value. While running in the operating system, the application of a heavy load will bring all processor cores out of the idle and run them at the multiplier values selected in the BIOS setup. -
Page 23: Increase System Clock Frequency
3 generation Intel Core processor families, the system clock frequency is limited to modest increases compared to earlier Intel processors. Limited processor frequency increases can be done by raising the system clock speed and leaving the turbo ratio multipliers unchanged. Performance tuning using the system clock should be done to augment processor performance improvements already obtained using turbo ratios. -
Page 24: Figure 3.8. Bios Screen Showing System Clock Frequency Increased To 105 Mhz
Intel DZ77GA-70K / DZ77RE-75K Desktop Board Performance Tuning Guide System (host) clock frequency changes were made using the BIOS screen shown in Figure 3.6. The frequency display shows the results of increasing the system clock setting from 100 MHz to 105 MHz with the resulting processor speed increase from 3.90... -
Page 25: Performance Tuning Memory
See Appendix B for a summary description of memory settings and their effects. In addition, DIMM socket population will also affect system performance. Intel Desktop Board DZ77GA-70K has two independent memory channels which are indicated by blue or black memory DIMM sockets. For best performance, all sockets should be populated with memory matched by manufacturer, size, speed, and type. -
Page 26: Determining Memory Frequency
Note that the memory is not run directly from the host clock. The memory clock frequency is generated by the processor using input from the host clock signal received from the Intel Z77 PCH. The default memory clock frequency runs at 133.3 MHz. Increasing the system clock frequency affects the memory... -
Page 27: Going Beyond Xmp Profiles
(profile) at any given time. If several groups of performance settings are needed by the user, the Intel Extreme Tuning Utility allows storing multiple profiles as shown in Figure 3.9. Performance parameter settings can be entered into the Intel... -
Page 28: Figure 3.11. Using The Intel Extreme Tuning Utility For Storing Performance Profiles
These profiles can be invoked by starting the Intel Extreme Tuning Utility and loading the desired profile. The most recently loaded profile will remain resident in the BIOS, until changes are made by the user. -
Page 29: Performance Tuning Examples
Intel DZ77GA-70K / DZ77RE-75K Desktop Board Performance Tuning Guide Performance Tuning Examples 4.5 GHz Processor Speed Using Turbo Ratios Figure 4.1 shows the BIOS settings to achieve a processor speed of 4.5 GHz. The system clock has been left at the default value of 100 MHz. XMP profiles were used to obtain a memory speed of 1600 MHz. -
Page 30: Ghz Processor Speed Using Turbo Ratios And System Clock Changes30
100 MHz to 105 MHz. XMP profiles were used to obtain a memory speed of 1600 MHz. These settings are shown while running the CPU Stress Test included with the Intel Extreme Tuning Utility shown in Figure 4.3. Figure 4.2. 4.72 GHz Processor Speed Using Turbo Ratios... -
Page 31: Figure 4.3. Intel Extreme Tuning Utility Screen Showing Cpu Stress Test Running With 4.72 Ghz Processor Speed
Intel DZ77GA-70K / DZ77RE-75K Desktop Board Performance Tuning Guide Figure 4.3. Intel Extreme Tuning Utility Screen Showing CPU Stress Test Running with 4.72 GHz Processor Speed... -
Page 32: A Parameter Descriptions For Bios Performance Settings
When “Low Power” is selected, the BIOS will report a full range of available Enhanced Intel SpeedStep Technology frequency steps to the operating system. When “High Performance” is selected, the BIOS will report only the top frequency step. Note: C- states may impact the ability of some frequency monitoring tools to accurately report the full frequency. - Page 33 Intel DZ77GA-70K / DZ77RE-75K Desktop Board Performance Tuning Guide Setup Option Description Voltage Override more aggressive overclock frequencies. Note: This setting may impact S3 functionality. 4-Core Ratio Sets the core multiplier to be used when four processor cores are in use.
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Page 34: B Parameter Descriptions For Memory Performance Settings
Intel DZ77GA-70K / DZ77RE-75K Desktop Board Performance Tuning Guide Parameter Descriptions for Memory Performance Settings NOTE All multiplier values listed in Table B- are applied to the single 100 MHz (default) host clock. Table B-1. Memory Performance Settings... - Page 35 Intel DZ77GA-70K / DZ77RE-75K Desktop Board Performance Tuning Guide...
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