JZA80

Hi together,

I hope someone can help me out. I am using a W3520 since a few days and can't get it stable past 4 GHz. I already tried 1.45 VCore but I think something else is wrong.

This is my BIOS template:

CPU Level Up:
Memory Level Up:
Ai Overclock Tuner:
OC From CPU Level Up:
OC From Memory Level Up:
CPU Ratio Setting: 21
BCLK Frequency: 195
PCIE Frequency: 105
DRAM Frequency: 19XX
UCLK Frequency: 38XX
QPI Frequency: AUTO
EPU II Phase Control: FULL
Loadline Calibration: ENABLED
CPU Differential Amplitude: AUTO
Extreme OV:
CPU Voltage: 1.325
CPU PLL Voltage: AUTO
QPI/DRAM Core Voltage: 1.475
IOH Voltage: 1.25
IOH PCIE Voltage: AUTO
ICH Voltage: AUTO
ICH PCIE Voltage: AUTO
DRAM Bus Voltage: 1.65
Debug Mode:
Keyboard TweakIt Control:
CPU Spread Spectrum: AUTO
PCIE Spread Spectrum: AUTO
CPU Clock Skew: AUTO
IOH Clock Skew: AUTO

CPU-Configuration
CPU Ratio Setting: AUTO
C1E Support: ENABLED
Hardware Prefetcher: ENABLED
Adjacent Cache Line Prefetch: ENABLED
Intel(R) Virtualization Tech: ENABLED
CPU TM Function: ENABLED
Execute Disable Bit: ENABLED
Intel(R) HT Technology: ENABLED
Active Processor Cores: ALL
A20M: DISABLED
Intel(R) C-STATE Tech: ENABLED
-C State package limit setting: AUTO

DRAM Timing Control
DRAM CAS# Latency: 9
DRAM RAS# to CAS# Delay: 9
DRAM RAS# PRE Time: 9
DRAM RAS# ACT Time: 24
DRAM RAS# to RAS# Delay:
DRAM REF Cycle Time:
DRAM WRITE Recovery Time:
DRAM READ to PRE Time:
DRAM FOUR ACT WIN Time:
DRAM WRITE to READ Delay:
DRAM Timing Mode: 2N
DRAM Round Trip Latency on CHA:
DRAM Round Trip Latency on CHB:
DRAM Round Trip Latency on CHC:
DRAM WRITE to READ Delay(DD):
DRAM WRITE to READ Delay(DR):
DRAM WRITE to READ Delay(SR):
DRAM READ to WRITE Delay(DD):
DRAM READ to WRITE Delay(DR):
DRAM READ to WRITE Delay(SR):
DRAM READ to READ Delay(DD):
DRAM READ to READ Delay(DR):
DRAM READ to READ Delay(SR):
DRAM WRITE to WRITE Delay(DD):
DRAM WRITE to WRITE Delay(DR):
DRAM WRITE to WRITE Delay(SR):

DRAM REF Voltage
DRAM DATA REF Voltage on CHA/B/C:
DRAM CTRL REF Voltage on CHA/B/C:

Would be great if someone could give me some useful hints.

Thanks.

eva2000

what batch is your W3520 ? memory module/brand used ? gpus ? hdd setup ?

Here's some reading for you as P6T* boards are similar for bios settings.

1. Intel Core i7 920 Overclocking Introduction Guide on X58
2. Asus X58 + 6/12GB memory overclocking - detecting less memory than installed
3. Asus P6T Deluxe V2 BIOS settings help please...
4. !Help Stability Asus P6T Version 1 and 2000Mhz memory
5. Asus P6T7ws SuperComputer OC and OCZ Mem Help

JZA80

Thanks for your prompt reply. You are great. Will post the batch no. later, as I am at work right now.

System looks as follow:
Rampage II Extreme (Bios 1406 - already tried to 1639 but 1406 is the best so far)
RAM: 3x2 GB G.Skill Trident DDR2000
HDD: 4 x Sinpoint F1 1TB - 3@Raid0
VGA: 2 x 4890TOP ASUS DESIGN CF (not overclocked)

Thanks

JZA80

My batch no. is 3931A356

snappy1

This may not work in your situation, but,

Firstly disable full phase control(had nothing but issues with my rampage with it on)

Secondly, don't use any auto voltage settings, set everything manually.

Set everything to stock volts except for CPU v core , use 1.65 v for ram as you are now.

With i7 voltages, less is more. If that runs fine at 4Ghz, then push further, but only increase cpu v core voltage.

Also set uncore frequency to exactly double your ram freq for better stability.

Also try and disable c1E support in CPU config settings.

Good luck, and let us now how it goes

JZA80

Thanks mate. Didn't help. Maybe my board just doesn't like overclocking.

snappy1

Bugger, it was worth a try,can you try your cpu in another mobo maybe?

eva2000

Could be raid and crossfire getting in the way of needing more volts. Have you tried with just one video card ?