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Intel DZ77GA-70K Скачать руководство пользователя страница 13

Intel DZ77GA-70K / DZ77RE-75K Desktop Board Performance Tuning Guide

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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 as described in the sections below. Exceeding the system stability limits is a
normal, expected occurrence during the performance tuning process and there are
multiple reliable and easy to use options for restoring system operation as described in
the following subsections.

3.4.1

Hardware Watchdog Timer

A hardware watchdog timer has been included as part of the board circuitry and is
enabled by default in the BIOS. This timer will automatically enable the board to
startup if unstable system operation or a failure to boot is detected. If the watchdog
timer detects an issue, the screen shown in 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. This process can be repeated over and over, so if
the user’s parameter changes do not restore system stability, the watchdog timer will
again intervene and allow the user another opportunity to adjust the BIOS settings.
The watchdog timer works in most, but not all cases. If the watchdog timer did not
detect an issue or was disabled by the user, then one of the alternate recovery options
described in Sections 3.4.2 through 3.4.4 can be used.

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Содержание DZ77GA-70K

Страница 1: ...Intel Desktop Boards DZ77GA 70K DZ77RE 75K Performance Tuning Guide Revision 1 0...

Страница 2: ...ERMS AND CONDITIONS OF SALE FOR SUCH PRODUCTS INTEL ASSUMES NO LIABILITY WHATSOEVER AND INTEL DISCLAIMS ANY EXPRESS OR IMPLIED WARRANTY RELATING TO SALE AND OR USE OF INTEL PRODUCTS INCLUDING LIABILIT...

Страница 3: ...ove 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...

Страница 4: ...m Setup 18 Figure 3 6 Processor Overrides Page Showing Defaults 19 Figure 3 7 Intel Extreme Tuning Utility System Monitoring Screen 23 Figure 3 8 BIOS Screen Showing System Clock Frequency Increased t...

Страница 5: ...mance tuning while protecting the user from overheating or damaging board components These enhancements include Fan speed control the processor and system fan speeds automatically increase when elevat...

Страница 6: ...Intel DZ77GA 70K DZ77RE 75K Desktop Board Performance Tuning Guide 6...

Страница 7: ...rovides support for a PCI Express x1 interface a PCI bus SATA USB and other system interfaces The Intel Z77 PCH communicates with the processor via the DMI bus BIOS performance tuning controls include...

Страница 8: ...Intel DZ77GA 70K DZ77RE 75K Desktop Board Performance Tuning Guide 8 Figure 2 1 Intel Desktop Board DZ77GA 70K Simplified Block Diagram...

Страница 9: ...Intel DZ77GA 70K DZ77RE 75K Desktop Board Performance Tuning Guide 9...

Страница 10: ...settings created by the manufacturer that can be selected in the BIOS Using XMP profiles can simplify memory performance tuning Capability for memory performance tuning will likely be limited if low...

Страница 11: ...mory etc utilization can be determined by running your software application while monitoring resource usage Resource usage can be monitored with the Intel Extreme Tuning Utility Also your software sup...

Страница 12: ...BIOS setup screen can be accessed at system startup by pressing the F2 key at the BIOS screen prompt It is advisable to run the latest BIOS revision to ensure that performance features are at the high...

Страница 13: ...ally enable the board to startup if unstable system operation or a failure to boot is detected If the watchdog timer detects an issue the screen shown in Figure 3 1 will be displayed In addition on th...

Страница 14: ...wn in Figure 3 2 in a safe bootable mode without needing to open the system chassis to access the BIOS jumper When the Back to BIOS button is depressed both the button and a red LED located on the DZ7...

Страница 15: ...he 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 DZ77GA 70K Product Guide for additional information...

Страница 16: ...rogram 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 sys...

Страница 17: ...rocessor 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...

Страница 18: ...abled 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 su...

Страница 19: ...ning 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 g...

Страница 20: ...o Low V droop Performance if you are attempting to maximize processor performance If you are attempting moderate performance increases then the Mid or the High V droop Power Saving selection is accept...

Страница 21: ...ower limit to prevent throttling 3 6 2 Set Multipliers Turbo Ratios NOTE Only fully unlocked or partially unlocked processors in the 3rd generation Intel Core processor family allow modifying the mult...

Страница 22: ...e refer to Section 3 4 for recovery options When the system can successfully boot into the operating system various software applications can be used to stress the processor memory and other sub syste...

Страница 23: ...ress testing then additional tuning or improved cooling is needed Once system stability has been established with stress testing software recheck system stability using your normal software applicatio...

Страница 24: ...om 3 90 GHz to 4 09 GHz 39x105 MHz 4 09 GHz Figure 3 6 BIOS Screen Showing System Clock Frequency Increased to 105 MHz NOTE The multipliers for the processor were left unchanged from the default of 39...

Страница 25: ...1 XMP Memory Profiles Although each memory parameter can be modified individually the easiest method of optimizing performance is to use memory that supports Extreme Memory Profiles XMP These profiles...

Страница 26: ...ng 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 frequency according to...

Страница 27: ...uce the tCL tRCD tRP and tRAS parameter values until the system once again becomes unstable then increase the values by one increment 3 6 6 Reduce Voltage Current and Power Gradually reduce voltage an...

Страница 28: ...the user to enter a profile name where the performance parameter settings will be stored These profiles can be invoked by starting the Intel Extreme Tuning Utility and loading the desired profile The...

Страница 29: ...4 1 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 w...

Страница 30: ...ratios of 45 were set for all of the processor cores The system base clock frequency has been increased from the default value of 100 MHz to 105 MHz XMP profiles were used to obtain a memory speed of...

Страница 31: ...Intel DZ77GA 70K DZ77RE 75K Desktop Board Performance Tuning Guide 31 Figure 4 3 Intel Extreme Tuning Utility Screen Showing CPU Stress Test Running with 4 72 GHz Processor Speed...

Страница 32: ...y step Note C states may impact the ability of some frequency monitoring tools to accurately report the full frequency Intel Turbo Boost Technology Enabling Intel Turbo Boost Technology also enables E...

Страница 33: ...3 functionality 4 Core Ratio Limit Sets the core multiplier to be used when four processor cores are in use 3 Core Ratio Limit Sets the core multiplier to be used when three processor cores are in use...

Страница 34: ...cles for issuing an active command and the read write commands tRP RAS Precharge Time This is the minimum time between active commands and the read writes of the next bank on the memory module tRASmin...

Страница 35: ...Intel DZ77GA 70K DZ77RE 75K Desktop Board Performance Tuning Guide 35...

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