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NVIDIA nForce 590 SLI Technology Chipset Overclocking

DU-02451-001_v01

27

05/17/06

NVIDIA nForce 590 SLI MCP HyperTransport Interface

The link between NVIDIA nForce 590 SLI MCP and SPP is a 16-bit upstream and
downstream HyperTransport interface operating at 1 GHz, similar to CPU
HyperTransport interconnect. The NVIDIA LinkBoost technology increases this
bus bandwidth by 25%. Bandwidth increases help with overall system performance.
MCP HyperTransport (HTT) is designed to overclock by up to 50 to 60%.
Overclocking the MCP HTT interface through the BIOS:

1.

Load system configuration defaults in BIOS using

Load Defaults

option

2.

Configure system voltage settings as shown in Figure 17.

Figure 17. BIOS System Voltages Configuration for MCP HTT

Overclocking

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Содержание nForce 590

Страница 1: ...User Guide NVIDIA nForce 590 SLI Technology Chipset Overclocking May 2005 DU 02451 001_v01...

Страница 2: ...DU 02451 001_v01 ii 05 17 06 Document Change History Version Date Responsible Reason for Change 01 05 17 06 WZ TS NSmith Initial release...

Страница 3: ...hnology Chipset 5 Disable AMD Cool n Quiet Technology 7 A Systematic Approach 8 CPU Reference Clock 9 CPU HyperTransport Overclocking 15 CPU Core Clock 17 DDR2 Memory Interface Overclocking 19 Balance...

Страница 4: ...OS System Clocks Configuration for CPU Overclocking 18 Figure 11 Disabling SLI Ready Memory in BIOS 20 Figure 12 BIOS System Voltages Configuration for Memory Overclocking 20 Figure 13 BIOS Memory Tim...

Страница 5: ...nce and overclocking headroom in the chips they produce Nowadays with the availability of highly overclockable PC components and the utilities that allow users to easily attain higher performance over...

Страница 6: ...frequencies component temperatures should be kept as low as possible With proper cooling overclocking is highly attainable The most commonly cooling techniques are air cooling with fan mounted heat si...

Страница 7: ...ncy It is 200 MHz nominally Multiplier Multiplier for your front side bus FSB Multiply this value by the speed of your FSB to get the end CPU clock speed CPU Clock Speed Multiplier x FSB Prime95 Progr...

Страница 8: ...ween the last read and the subsequent READ command to the same physical bank tRC Row Cycle time is the minimum time in cycles it takes a row to complete a full cycle This can be determined by tRC tRAS...

Страница 9: ...peeds are the main contributing factors to boosting overall system performance This section describes how to adjust settings for the major chip interconnects and components that affect performance Fig...

Страница 10: ...NVIDIA nForce 590 SLI Technology Chipset Overclocking DU 02451 001_v01 6 05 17 06 Figure 1 High level System Diagram...

Страница 11: ...The AMD Cool n Quiet technology must be disabled in order to enable stable overclocking without limiting maximum achieved CPU performance Use the following procedure to disable this feature 1 Set AMD...

Страница 12: ...erTransport bus CPU frequency memory interface PCI Express and MCP HyperTransport link are done in the SBIOS Some system settings such as CPU multiplier and memory drive strength parameters can only b...

Страница 13: ...erence clock MHz CPU multiplier HyperTransport bus speed CPU reference clock MHz HT multiplier Change System Clocks Before you can find the maximum CPU reference clock the NVIDIA nForce 590 SLI mother...

Страница 14: ...Technology Chipset Overclocking DU 02451 001_v01 10 05 17 06 Figure 3 shows the proper configuration in preparation for overclocking the CPU reference clock Figure 3 System Clock Setup for CPU Referen...

Страница 15: ...01_v01 11 05 17 06 Set Memory Timings Set memory frequency as low as possible from the Memory Timings BIOS menu as shown in Figure 4 1 Set Timing Mode to User limit 2 Set Memory Clock Limit to DDR2 40...

Страница 16: ...oltages Go to the System Voltages BIOS menu and change the following to match the values shown in Figure 5 1 Change CPU core voltage CPU 2 Change HyperTransport interface core voltage HT CPU nForce SP...

Страница 17: ...bility Figure 6 Adjusting CPU Reference Clock using NVIDIA nTune 5 0 Tip In nTune use Left and Right keyboard buttons to make small increments or decrements for the CPU Reference clock HTT slider valu...

Страница 18: ...lity Test for at least two hours as seen in Figure 7 Additionally running 3DMark Prime95 or a GPU intensive game like Serious Sam II for an extended period of time allows you to get a sense of overall...

Страница 19: ...more CPU HTT bus speed has a tremendous impact on memory performance Use the following procedure to overclock CPU HyperTransport bandwidth 1 Eliminate all sources of instability by configuring System...

Страница 20: ...trol panel shown in Figure 9 The CPU HTT interface of NVIDIA nForce 590 SLI motherboards can support much higher speeds Adjusting the voltage can help you reach increases of 50 to 60 You can achieve m...

Страница 21: ...g voltages so they have exactly the same values as shown in Figure 5 CPU core voltage HyperTransport interface core voltage HT CPU nForce SPP NVIDIA nForce 590 SLI SPP core voltage nForce SPP and nFor...

Страница 22: ...FX 62 CPU runs at 2 8 GHz nominally When you increase the reference clock for instance to 246 MHz from 200 MHz you have overclocked the CPU to 3 07 GHz 256 MHz 12 You can reach a higher CPU frequency...

Страница 23: ...performance will be Your two basic options are a faster clock with longer CAS latency like tCL 5 or a slower clock with shorter latency like tCL 4 For example 5 CLK1 might be smaller than 4 CLK2 The...

Страница 24: ...eature in the Memory Configuration BIOS menu as shown in Figure 11 Figure 11 Disabling SLI Ready Memory in BIOS 2 Go to the System Voltages BIOS menu shown in Figure 12 to increase the Memory voltage...

Страница 25: ...hange CPU nForce SPP multiplier to x3 4 Go to the Memory Timings BIOS menu shown in Figure 13 and set the values to match Enhanced Performance Profiles EPP Technology provides a baseline for overclock...

Страница 26: ...g signals and helps increase frequency Note If you use different memory types you may discover other tricks and optimizations by experimenting For instance raising the drive strength may be more a mor...

Страница 27: ...rclock memory Adjusting memory timings drive strengths and possible memory and CPU voltages ever so slightly might be necessary to achieve higher overclockability Note that the Clock Drive Strength is...

Страница 28: ...erence clock 400 MHz 277 MHz 200 MHz 1 108 MHz Since all three variables have different CPU HTT reference clock settings to achieve independent overclocking a value for the reference clock must be sel...

Страница 29: ...Defaults option 2 Go to the System Voltages BIOS menu to change the following voltages so they have exactly the same values as shown in Figure 5 HT nForce SPP MCP nForce SPP nForce MCP 3 Use the NVIDI...

Страница 30: ...NVIDIA nForce 590 SLI Technology Chipset Overclocking DU 02451 001_v01 26 05 17 06 Figure 16 Overclocking PCI Express using NVIDIA nTune 5 0...

Страница 31: ...CPU HyperTransport interconnect The NVIDIA LinkBoost technology increases this bus bandwidth by 25 Bandwidth increases help with overall system performance MCP HyperTransport HTT is designed to overc...

Страница 32: ...adjust SPP MCP Ref Clock setting in System Clocks BIOS menu as illustrated in Figure 18 Gradually increment MCP HTT clock to determine the highest passing value MCP HTT clock can run at 300 MHz and hi...

Страница 33: ...IDIA nTune 5 0 as shown in Figure 19 Although increasing 2D core frequency does not affect 3D applications and gaming performance the setting impact 2D applications such as DVD playback The GeForce 79...

Страница 34: ...e system configuration The order of component overclocking importance relative to performance is as follows 1 CPU core frequency 2 Optimizing memory performance 3 GPU core and memory frequencies 4 CPU...

Страница 35: ...the NVIDIA nTune 5 0 Profiles feature shown in Figure 21 The Profiles feature lets end users save overclock settings Once the settings are configured properly in nTune save a profile as an nsu file o...

Страница 36: ...VIDIA nForce 590 SLI Technology Chipset Overclocking DU 02451 001_v01 32 05 17 06 Figure 21 Storing Profiles in NVIDIA nTune 5 0 Figure 22 Loading Automated Settings Using NVIDIA nTune 5 0 Custom Rule...

Страница 37: ...IDIA nForce 590 SLI chipset has been engineered with enthusiasts and overclockers in mind An entire platform solution is designed to provide gaming enthusiasts and overclockers the necessary means to...

Страница 38: ...mation or for any infringement of patents or other rights of third parties that may result from its use No license is granted by implication or otherwise under any patent or patent rights of NVIDIA Co...

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