passionne

Hello,

I need help since I don't manage to have a 100 % stable system.

With the 1101 bios, I did the following tests :

- max fRAM found : 960 Mhz
- 3DMark05 CPU tests stable at 975 Mhz 4-4-4-8, whatever the divider, VRAM=2.14 V, NBstrap=333.
- Orthos RAM priortiy 10 stable at 960 Mhz (I did not test higher) 4-4-4-8, VRAM=2.18 V, NBstrap=333. I stopped Orthos after 1 h 16 min.

- max FSB found : 534 Mhz
- 3DMark05 CPU tests stable at 475x9/8=534 Mhz (CPU multiplier=8). 534 Mhz confirmed by Sisoft Sandra. VNB= 1.33 V. Divider 1:1.

- max fCPU :
- Orthos CPU & RAM priority 10 stable at 4166=9x463 Mhz, divider 1:1. VCPU=1.5 V, VFSB=1.4 V, VNB=1.35 V, VRAM=2.12 V, VPLL=1.54 V, every other voltage on auto. I stopped Orthos after 7 h 37 min.

I believed that 4166 was my 100 % stable frequency but I encountered crashes with games. The graphic card was not overclocked.

So I decreased the frequency to 4158 Mhz=462x9 and Orthos CPU & RAM crashed after 3 h 28 s !

Consequently, today, I was really fed up with my PC and at 4275 Mhz=475x9, I tested Orthos CPU & RAM with the following voltages : VFSB=1.52 V, VNB=1.59 V, VRAM=2.18 V, VSB=1.15 V, VPLL=1.64 V and crash after 12 min.

I am fed up with this motherboard. Would you have an idea why I don't manage to be stable ?

Thanks.

eva2000

hey welcome passionne

what's your bios settings used Asus Blitz Formula Bios Template ?

might want to read http://i4memory.com/f54/announcement-overclocking-methodology-eva2000.html as well as E6850 L723A347 + Asus Blitz Formula 1101 bios

For 4x1GB you might need higher NB and vdimm voltage

Try with 2x1GB first

passionne

Extreme Tweaker
AI Overlocking: Manual
CPU Ratio Control: Manual
--- Ratio CMOS Setting: 9
FSB Strap to North Bridge: 333
FSB Frequency: 333
PCIE Frequency: 100
DRAM Frequency: DDR2-800
DRAM Command Rate: 2T
DRAM Timing Control: Manual
---CAS# Latency: 4
---RAS# to CAS# Delay: 4
---RAS# Precharge: 4
---RAS# Active Time: 8
---RAS# to RAS# Delay: Auto
---Row Refesh Cycle Time: Auto
---Write Recovery Time: Auto
---Write to Read Delay: Auto
---Read to Precharge Time: Auto
DRAM Static Read Control: AUTO

Tramsaction Booster: AUTO
--- Boost Level:

CPU Spread Spectrum: Disabled
PCIE Spread Spectrum: Disabled

CPU Voltage: 1.5 V
CPU Voltage Reference: AUTO
Loadline Calibratiom: Enabled
FSB Termination Voltage: 1.4
North Bridge Voltage: 1.35
North Bridge Reference: AUTO
DRAM Voltage: 2.12 v
-DDRII Channel A Ref Voltage: AUTO
-DDRII Channel B Ref Voltage: AUTO
-DDRII Controller Ref Voltage: AUTO
South Bridge Voltage: AUTO
PLL Voltage: 1.54 V
NB LED Selection: NB Volt
SB LED Selection: PLL Volt
Frequency LED: Turn off
Voltiminder LED: Turn off

CPU Ratio Control: Manual
-- Ratio CMOS Setting:
C1E Support: Disabled
Max CPUID Value Limit: Disabled
Vanderpool Technology: Enabled
CPU TM Function: Disabled
Execute Disable Bit: Disabled
PECI: Enabled

USB Configuration
USB Functions: Enabled
Legacy USB Support: Disabled (need to enable it to detect USB flash drives)

I will try with 2 sticks only and higher voltages on NB and RAM. What max safe voltages do you recommend for NB and RAM ? NB is watercooled (water at 20°C) and RAM is cooled by 2 80 mm fans.

I keep you informed.

eva2000

try raising North Bridge Voltage to 1.55v to 1.65v and DRAM voltage to 2.2-2.30v the higher voltages particularly for 4x1GB.. you can probably drop FSB termination voltage to 1.3-1.35v

24/7 i'd recommend NB 1.55-1.6v and vdimm under 2.25v vdimm

passionne

I ran Orthos CPU & RAM priority 10 this night by following your advice and Orthos crashed after 9 h 13 min.

Here are the parameters :

CPU Voltage: 1.5 V
CPU Voltage Reference: AUTO
Loadline Calibratiom: Enabled
FSB Termination Voltage: 1.38
North Bridge Voltage: 1.55
North Bridge Reference: AUTO
DRAM Voltage: 2.2 v
-DDRII Channel A Ref Voltage: AUTO
-DDRII Channel B Ref Voltage: AUTO
-DDRII Controller Ref Voltage: AUTO
South Bridge Voltage: AUTO
PLL Voltage: 1.54 V

I will test tonight with VFSB=1.34 V and VPLL=1.5 V. Indeed, accordinf to your link, E6850 L723A347 + Asus Blitz Formula 1101 bios, you adjusted VPLL at 1.5 V. Today, I will play games too in order to see if I still encounter crashes.

I keep you informed.

gaidin

sorry, slightly OT

Blue or white slots for memory on the Blitz eva? I read your summary in a thread somewhere but I cant for the life of me find it

dinos22

is it stable at stock speeds

passionne

Yes, it is stable at stock speeds.