Ausus Striker II Formula + QX9650 share your settings

[pulsar21]

Hi all. Yes i'm a noob. After reading many many posts I'm still not able to run my rig stable at 4 - 4.3 GHz.

I'ld appreciate some help to get my rig (QX9650) stable at 4 Ghz or more when possible.
My settings are:

Bios 2201

Vcore: 1.57250 in bios (1.47 cpu.-z)
pll: 1.52
vtt: 1.28
mem: 2.10
nb: 1.50
sb: 1.60
ht: 1.20
bridge: 1.20

the other settings like fsb+mem and timing are all on auto. Multiplier is 13.
temperature are in idle: 39, 46, 43, 40 (core temp) system is complete watercooled.

I can boot in windows and the system seem to be stable but games like ghost recon crash after some minutes or the network connenction got lost and I've to disable and enable the network adapter to reconnect.

What should I do? raise the vcore a notch more or what?

thanks for any advice and suggestions