Hi Guys,

I am extremely please to report I have now got the BlackOps running as I always thought it should. I had always believed in this board, although my enthusiasm did wane through the process, I now have new vigour to the next level in overclocking this challenging motherboard

What was my problem: Vtt, I say again, Vtt

I stacked up a bucketful of hours sorting this, and in the end it was this little gem, vtt

Once I adjusted the vtt = 1.500 I was stable in the 450fsb range.
I then quickly ran some 3D benches using 3870’s in crossfire, and was pleasantly rewarded.
Here’s a 2006 shot.


Now to tweak the system:

I would like to thank everyone here and the many PM’s I received helping me sort this, I know I probably rattled a few cages, but you came through: I could not have done it without your help

Thanks to all,

I still think there is room for discussion on the voltages of this board, but perhaps someone will take that up in a new thread.

My settings used:
Quantum BIOS Version G28

Overclock Phase Select - Manual O.C.
CPU Clock Ratio - 10x
CPU Clock Ratio +0.5 - Enabled
Target CPU Core Speed - 4620 MHz
CPU Clock (FSB) - 440 MHz
CPU Clock vs Memory Speed - 1:4 CPU333
System Memory Speed - 1760 MHz
CPU Clock Skew Control - 200 ps
CPU Clock Amplitude CTRL - 800mV
PCI Express Clock - 101MHz
PCI Clock - 33.6 MHz
Spread Spectrum - Disabled
Overclock Recovery - Disabled

All Voltage Control

CPU Voltage Multiplier - x1.075
CPU Voltage Setting – 1.512
CPU Vdroop Compensation - Enabled
CPU PLL Voltage Setting - 1.546582
CPU VTT Voltage Setting - 1.575
CPU GTL Ref. 0 Voltage -
CPU GTL Ref. 1 Voltage -
CPU GTL Ref. 2 Voltage -
CPU GTL Ref. 3 Voltage -
NB Voltage Setting - 1.718
NB GTL Ref. Voltage -
SB Voltage Setting - 1.688
DRAM Voltage Setting – 1.933
DRAM Pull-up Voltage -
DRAM Pull-down Voltage -
DRAM Ref. Voltage -

Memory Timing Config

ECC Scrubbing - Disabled
DRAM Timing Selectable - Manual
CAS Latency Time - 7
RAS# to CAS# Delay - 6
RAS# Precharge - 5
Precharge Delay - 18
Row Refresh Cycle - 48
Performance Level - 6
Write to Precharge - 16
Write to Read Delay - 17
Act to Act Delay - 5
Read to Precharge - 5
All Precharge to Refresh - Auto
Refresh Period Ratio - x1
Refresh Period - Auto
Command Per Clock - 1T
R2RD Same Rank - Auto
R2RD Different Rank - Auto
W2RD Same Rank - Auto
W2RD Different Rank - Auto
FSB Gain 1 - Auto
FSB Gain 2 - Auto
FSB Gain 3 - Auto
FSB Gain 4 - Auto
Blue DIMM Clock DLL Adjust - Auto
White DIMM Clock DLL Adjust - Auto
Blue DIMM Ctrl DLL Adjust - Auto
White DIMM Ctrl DLL Adjust - Auto
DRAM Command DLL Adjust - Auto

Please advise on any adjustments I should make, to improve this board.