Guys...I'm having trouble increasing the frequency of my memories

I did some tests here. In my previous over, everything was perfect with the cpu, and now that modified the settings of memories, the errors appeared, then there is no doubt that the memories are unstable.
I tested this:
ASUS P5Q DLX Template :
JumperFree Configuration Settings
AI Overclock tuner: Manual
CPU Ratio Setting: 8
FSB Strap to North Bridge: AUTO
FSB Frequency: 450
PCI-E Frequency: 101
DRAM Frequency: 1081
DRAM CLK Skew on Channel A1: AUTO
DRAM CLK Skew on Channel A2: AUTO
DRAM CLK Skew on Channel B1: AUTO
DRAM CLK Skew on Channel B2: AUTO
DRAM Timing Control: Manual
1st Information :
CAS# Latency: 5
DRAM RAS# to CAS# Delay: 5
DRAM RAS# Precharge: 5
DRAM RAS# Activate to Precharge: 18
RAS# to RAS# Delay : AUTO
Row Refresh Cycle Time: 52
Write Recovery Time: AUTO
Read to Precharge Time: AUTO
DRAM Static Read Control: Disabled
DRAM Read Training: AUTO
MEM. OC Charger: AUTO
AI Clock Twister: AUTO
AI Transaction Booster: manual
Perfomance level: 10 then try 9 later on
Pull-In of CHA PH1: DISABLED
Pull-In of CHA PH2: DISABLED
Pull-In of CHA PH3: DISABLED
Pull-In of CHA PH4: DISABLED
Pull-In of CHB PH1: DISABLED
Pull-In of CHB PH2: DISABLED
Pull-In of CHB PH3: DISABLED
Pull-In of CHB PH4: DISABLED
FSB Termination Voltage: 1.3
DRAM Voltage: 2.1
NB Voltage: 1.28
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