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Asking for suggestions on Bios settings needed to be changed for additional Mem OC or CPU and Mem OC?

 

Just started OC this system (New to OC) Read the posts for the Twin2x4096-6400C5DHX. Got suggestions to use 5-5-5-15 and reach the 4:5 FSB:Dram result. Did not understand how to go faster / or increase bandwith of memory beyond this. Guides are not specific enough for me, for this system/mem/cpu combination. Thanks for the help.

 

PC is currently stable. Passed 3 complete memtest's and in Windows Vista 32 bit Ultimate. Going to upgrade to Vista 64 Ultimate. System has been tested in MEMTEST with all 8 GIG. Stable and running good. Want to push OC Mem more. CPU maybe.

 

When I attemp to push the Dram to 1600Mhz it fails to be stable. What combination of CPU and Mem settings might be a better combination for this system.

 

Thanks

 

*Note onboard Gig NIc-Possible network instability- not sure yet troubleshooting. Loosing Internet connection on this sytem intermitently, but not on another PC.

 

Room ambient 24-26C at this time. 43% Humidity.

 

Gigabyte

EP45-DS3L

Intel Q9550 Yokfield 45nm 2.83Ghz

Core Voltage 1.312

OC to 3.200.4

Bus Speed 400.1 MHz

Rated FSB 1600.2

Cooler Master Hyper TX2

Idle 30C

Max Temp - Unknow Maybe 38C

*Have not fully loaded system while in Windows.

 

Mem 8Gig

Twin2x4096-6400C5DHX

OC

5-5-5-15 2T

Volt 1.92

Dram Frequency 500.1 (x2)=1000MHZ

FSB:Dram 4:5

 

Video (Currently)

Nvidia 8600 256 ddr3

Not OC'd.

GFx Temp 42 Idle/ 56C Load

Replacing with Nvidia 260- 216

 

Antec 900 Case.

HD- Seagate 750 Gig SATA 32Mb cache 7200 rpm.

PSU- CoolerMaster 1000W

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Download Memtest86+ V2.01 from--->

and extract the ISO image. Burn the ISO image to an CD-ROM disk.

Download CPU-z from
.

Download Real Temp from-->

To be certain of both CPU and Memory, use the Intel Linpack CPU/Memory test.

 

http://67.90.82.13/forums/showthread.php?t=197835

 

Shut the system down. Insert a single stick of DRAM in Slot 1 (Closest to the CPU) and slot 3.Enter your BIOS. Load Setup Defaults. Save Setup Defaults. On the main BIOS screen press Ctrl + F1. You will see the screen flicker. Next select the MB Intelligent Tweaker option. On that screen you will see many additional settings that were not there before. Set to these values but be sure that the last value you set is the MCH Latch Value. Leave it on Auto until you set all other values. Then set the Latch to 333Mhz, save and exit:

Robust Graphics Booster: Auto
CPU Clock Ratio: 8.5
Fine CPU Clock Ratio: +0.5
CPU Frequency: 3.825GHz (450x8.5)

Clock Chip Control

Standard Clock Control

CPU Host Clock Control: Enabled
CPU Host Frequency (Mhz): 450 Mhz
PCI Express Frequency (Mhz): 100

C.I.A.2: Disabled

Advanced Clock Control

CPU Clock Drive: 600mV
PCI Express Clock Drive: 600mV
CPU Clock Skew (ps): 0ps
MCH Clock Skew (ps): 150ps

DRAM Performance Control

Performance Enhance: Standard

Extreme Memory Profile (X.M.P.): Disabled
(G)MCH Frequency Latch: 333

System Memory Multiplier: 2.40
Memory Frequency (Mhz): 800Mhz
DRAM Timing Selectable: Manual

Standard Timing Control

CAS Latency Time: 5
tRCD: 5
tRP: 5
tRAS: 15

Advanced Timing Control

tRRD: 5
tWTR: 12
tWR: 14
tRFC: 62
tRTP: 6
Command Rate (CMD): 2

Driving Strength Profiles

Driving Strength: 800

Channel A
Static tRead Value: 9 
tRD Phase0 Adjustment: Auto
tRD Phase1 Adjustment: Auto
tRD Phase2 Adjustment: Auto
tRD Phase3 Adjustment: Auto
Trd2rd(Different Rank): Auto
Twr2wr(Different Rank): Auto
Twr2rd(Different Rank): Auto
Trd2wr(Same/Diff Rank): Auto
Dimm1 Clock Skew Control: Auto
Dimm2 Clock Skew Control: Auto

Channel B
Static tRead Value: 9
tRD Phase0 Adjustment: Auto
tRD Phase1 Adjustment: Auto
tRD Phase2 Adjustment: Auto
tRD Phase3 Adjustment: Auto
Trd2rd(Different Rank): Auto
Twr2wr(Different Rank): Auto
Twr2rd(Different Rank): Auto
Trd2wr(Same/Diff Rank): Auto
Dimm1 Clock Skew Control: Auto
Dimm2 Clock Skew Control: Auto

Motherboard Voltage Control

Voltage Type: Manual
CPU
CPU Vcore: 1.35v
CPU Termination: 1.25v
CPU PLL: 1.5v
CPU Reference: 0.8v
CPU Reference2: 0.8

MCH/ICH
MCH Core: 1.2v
MCH Reference: 0.8v
MCH/DRAM Ref: 0.9v
ICH I/O: 1.55v
ICH Core: 1.2v

DRAM

DRAM Voltage: 2.1v
DRAM Termination: 0.9v
Channel A Reference: 0.9v
Channel B Reference: 0.9v

Advanced Settings
Limit CPUID Max. to 3: Disabled
No-Execute Memory Protect: Enabled
CPU Enhanced Halt (C1E): Disabled
CPU Thermal Monitor 2(TM2) : Enabled
CPU EIST Function: Disabled
Virtualization Technology: Disabled

Boot to the Memtest ISO. Allow for two full passes and if stable, enter Windows. Run Linpack for full memory (1) and use a 5 pass iteration. Run Real Temp and watch the temperatures. Let the Linpack program run for the full 5 passes. The output in the screen will give you five sets of values. They should be identical for a stable CPU and DRAM. Post screenshots of CPU-z's CPU, Memory and SPD tabs and of the maximum Real Temp when running Linpack. If stable, lower the CPU core voltage incrementally and retest until unstable, then raise two increments and retest again.

 

You are not going to get much higher than 900 - 1000Mhz on that DRAM. DDR2 is not high overclocking DRAM anymore. All companies are running with R & D on DDR3 and DDR2 is now relegated to lower end DRAM. Doubly so with 2GB modules.

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