Need Advice With OC Q6600

Im currently OC my Q6600

specs
Q6600
Gigabyte g33m-dsr2
2 gb Mushkin EM2-6400 5-5-5-18
ati 3870
enermax 535 watt
seagate 500gb 32 mb cache
Antec 900 case



This is on stock cooling with Core Temps on Prime95 @ full load after 5 hours 51 degrea celcius




im sitting at 3.2 ghz with a vcore of 1.312V

Im looking to hit 3.4 ghz with my current setup and am looking to add another set of my current ram..


sugestions ?

Change in BIOS
Stock Hs => Good aftermarket cooler
FSB => 400Mhz
CPU Multiplier => 6x
FSB:RAM divider => 1:1
CPU Voltage => 1.35v

Test to insure stability.
If unstable, raise Nb Voltage until stable.

When stable, raise CPU multiplier to 8x and CPU voltage to 1.45v.
Test for stability.
If unstable, raise Vcore until stable up to a max of about 1.55v (temp dependent).
If stable at 1.45v, lower Vcore until it becomes unstable then raise it two settings.
When you think it is 100% stable, run stability tests overnight to be sure.