Intel DP55KG Performance Tuning Manual
Desktop board, extreme series
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- Specification update (8 pages) ,
- Product brief (4 pages) ,
- Product manual (92 pages)
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Summary of Contents for Intel DP55KG
- Page 1 Intel® Desktop Board DP55KG and Intel® Desktop Board DP55SB Extreme Series Performance Tuning Guide Revision 1.4 October, 2009 Part Number: E78969-002...
- Page 2 OCCUR. Intel may make changes to specifications and product descriptions at any time, without notice. Designers must not rely on the absence or characteristics of any features or instructions marked "reserved" or "undefined." Intel reserves these for future definition and shall have no responsibility whatsoever for conflicts or incompatibilities arising from future changes to them.
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Page 3: Table Of Contents
Core™ i7 and Intel Core i5™ Processors and Intel Express Chipset General Concepts 2.1. Architecture..................6 Intel Desktop Board DP55KG/DP55SB BIOS Setup 3.1. Accessing BIOS Setup ................ 8 3.2. Recovering from an Unstable System ........... 8 3.3. Preparing Setup Options (Optional) ............9 Optimizing Processor Performance 4.1. - Page 4 Performance Tuning Main Page............12 Processor Overrides Page ..............13 Increasing the Host Clock Frequency ..........15 Confirming System Levels with Intel Desktop Control Center ....17 10. Memory Configuration ..............19 11. Selecting XMP Profiles ..............22 12. Checking the Uncore Voltage Override..........23 13.
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Page 5: Introduction
Desktop Control Center is a great tool for monitoring most Intel Desktop Board Extreme Series-based systems and is available for download at http://www.intel.com/go/dcc. New to Intel Desktop Board DP55KG/DP55SB is the easy auto tune capability. Beyond the scope of this guide, the Intel Desktop Control Center (Figure 1) is another resource for performance tuning. -
Page 6: Intel ® Core™ I7 And Intel
® Processors and Intel P55 Express Chipset General Concepts 2.1. Architecture The Intel Desktop Board DP55KG/DP55SB platform consists of an Intel Core i7-800 or ® ® Intel Core i5-700 processor series and the Intel P55 Express Chipset component—the Intel P55 Platform Controller Hub (PCH). For a detailed description of the complete platform, refer to... -
Page 7: Intel Desktop Board Dp55Kg/Dp55Sb Block Diagram
USB 2.0 SATA Figure 2. Intel Desktop Board DP55KG/DP55SB Block Diagram All desktop board components are driven from a single 133 MHz host clock (BCLK). The resulting processor frequency is generated by applying a multiplier value to the host clock... -
Page 8: Intel Desktop Board Dp55Kg/Dp55Sb Bios Setup
The Uncore Multiplier is locked by the processor at 18 for an Intel Core i7-870 processor for example. The Uncore Multiplier is unlocked on Intel Core i7-900 series Extreme Edition processors for example. -
Page 9: Preparing Setup Options (Optional)
® ® Intel Desktop Board DP55KG and Intel Desktop Board DP55SB Extreme Series Performance Tuning Guide 3.3. Preparing Setup Options (Optional) It is recommended to disable non-essential interfaces (such as, onboard audio, USB, LAN, external SATA, etc.) when tuning to get a clean and basic system as a starting point for performance tuning. -
Page 10: System Power With Cpu C States Disabled (Optional)
Note: 1-, 2-, and 3-Core Turbo modes require CPU C-states. Disabling C-states will limit Core Turbo to only the 4-Core ratio. For example, an Intel Core i7-870 processor with a 4-Core Turbo ratio results in a maximum frequency of only 3.2 GHz. -
Page 11: Optimizing Processor Performance
® ® Intel Desktop Board DP55KG and Intel Desktop Board DP55SB Extreme Series Performance Tuning Guide 4. Optimizing Processor Performance Performance tuning options are located in a menu section labeled “Performance.” Read and agree to the disclaimer (Figure 5). Please note that any performance increase achieved is dependent on the Processor, memory and motherboard used. -
Page 12: Processor Performance Tuning Options
Desktop Board DP55KG and Intel Desktop Board DP55SB Extreme Series Performance Tuning Guide 4.1. Processor Performance Tuning Options The main Performance Tuning page is shown in Figure 6 with an Intel Core i7-870 processor installed. Figure 6. Performance Tuning Main Page... -
Page 13: Processor Overrides Page
® ® Intel Desktop Board DP55KG and Intel Desktop Board DP55SB Extreme Series Performance Tuning Guide CPU tuning options are listed under “Processor Overrides” as shown in Figure 7. Refer to Table 1 for descriptions of the Processor Overrides. Figure 7. Processor Overrides Page... -
Page 14: Processor Overrides
® ® Intel Desktop Board DP55KG and Intel Desktop Board DP55SB Extreme Series Performance Tuning Guide Table 1. Processor Overrides Setup Option Description CPU Voltage Override Options Static CPU Voltage Overrides the voltage requested by the processor Override and applies a static voltage. This option disables the dynamic voltage control of the processor. -
Page 15: Processor Tuning Process: The Host Clock Method
® ® Intel Desktop Board DP55KG and Intel Desktop Board DP55SB Extreme Series Performance Tuning Guide 4.2. Processor Tuning Process: The Host Clock Method The frequency of the CPU can be set by increasing the host clock and leaving the multipliers unchanged. -
Page 16: Confirming System Stability
Windows Vista* or Windows* 7 use the “Performance” profile, in the Power Settings Control Panel applet. 3. When processor cores are idle, the Intel Core i7-800 and Intel Core i5-700 processor series will operate at a reduced multiplier value. By applying a heavy load to the processor in the operating system all processor cores will be out of the idle state and run at the multiplier values chosen in the BIOS setup. -
Page 17: How To Measure Processor Core Frequency
Performance Tuning Guide 4.4. How to Measure Processor Core Frequency Use a processor frequency display tool to verify the final speed. The Intel Desktop Control Center will have details on processor frequency and system speeds as shown in Figure 9. -
Page 18: Memory Optimization
XMP profile. In addition, memory population will also affect system performance. The Intel Core i7-800 and Intel Core i5-700 processor series have two independent memory channels. On Intel Desktop Board DP55KG/DP55SB, these are indicated by the two blue memory sockets. -
Page 19: Memory Performance Options
® ® Intel Desktop Board DP55KG and Intel Desktop Board DP55SB Extreme Series Performance Tuning Guide 5.2. Memory Performance Options The Memory Configuration page (Figure 10) contains all the memory timing options that can be adjusted and Table 2 describes the Performance Memory Profiles. -
Page 20: Performance Memory Profiles
Uncore Multiplier Sets the Uncore CPU multiplier. This is non-adjustable for Intel Core i7 and Intel Core i5 processors. It is shown for information purposes. Memory Multiplier Sets the memory multiplier provided by the on die memory controller of the installed processor. -
Page 21: Determining Memory Frequency
Table 3. Memory Multipliers Multiplier BCLK (MHz) Resulting Memory Frequency (MHz) 1066 1333 1600 Increasing the host clock will increase the memory speed as well. Note: The Intel Core i7-800 and Intel Core i5-700 processor series support only even multipliers. -
Page 22: Using Xmp Profiles
Override) voltage and do not perform as well at the higher voltage when used with the socket 1156 Intel Core i7-800 and Intel Core i5-700 processor series. It is recommended to manually adjust the Uncore voltage to a starting value of 1.35 V or lower if these memory modules are used (see Figure 12). -
Page 23: Xmp Manual Mode
For XMP profiles above DDR3 1600, the BIOS will automatically raise the system BCLK to reach those memory speeds. This means that when using an Intel Core i7-870 processor running at a base speed of 2.93 GHz, the processor will run at a maximum frequency of 4.51 GHz. If this type of fast memory is used, be sure to look at the other processor parameters in the BIOS and ensure they are set to support the faster processor frequency. -
Page 24: Examples Of Over-Clocked Settings
® ® Intel Desktop Board DP55KG and Intel Desktop Board DP55SB Extreme Series Performance Tuning Guide 6. Examples of Over-Clocked Settings 6.1. Using the Host Clock for Performance Boost The example shown in Figure 13 uses host clock (BCLK) adjustments to reach higher system performance. -
Page 25: System Overclocked With Default Processor Overrides
® ® Intel Desktop Board DP55KG and Intel Desktop Board DP55SB Extreme Series Performance Tuning Guide Figure 14 is a display of the Performance Tab showing Default (with Turbo enabled), Proposed, and Active adjustments. Figure 14. System Overclocked with Default Processor Overrides... -
Page 26: Bus Overrides At Default
® ® Intel Desktop Board DP55KG and Intel Desktop Board DP55SB Extreme Series Performance Tuning Guide Figure 15 is a display of the Performance Tab with Bus Overrides showing other board voltages at default. PCH Core Voltage might need to be adjusted when raising Uncore Voltage under the configuration page to achieve stable operation. -
Page 27: Memory Configuration With Uncore Voltage Adjusted In Manual Mode
® ® Intel Desktop Board DP55KG and Intel Desktop Board DP55SB Extreme Series Performance Tuning Guide Figure 16 shows the Memory Configuration with Uncore and Memory Voltages adjusted. Figure 16. Memory Configuration with Uncore Voltage Adjusted in Manual Mode... -
Page 28: Memory Performance Increased To 2305 Mhz
® ® Intel Desktop Board DP55KG and Intel Desktop Board DP55SB Extreme Series Performance Tuning Guide Figure 17 shows the Memory Performance increased with the BCLK using the maximum Memory Multiplier. Figure 17. Memory Performance Increased to 2305 MHz... - Page 29 ® ® Intel Desktop Board DP55KG and Intel Desktop Board DP55SB Extreme Series Performance Tuning Guide Figure 18 shows what happens when you push the system too far either in Memory Performance or Processor Performance. Figure 18. Watchdog Timer Tripped...
- Page 30 ® ® Intel Desktop Board DP55KG and Intel Desktop Board DP55SB Extreme Series Performance Tuning Guide...