Times your DRam Frequency by 2, your ram is currently running at 920mhz 5-5-5-18-2T
You will generally find performance improvements by running your Ram at a 1:1 ratio with your Bus speed.
If you set your ram to match your current bus speed of 230mhz your ram will only be running at 460mhz!
Try this :
Try changing your Cpu to this: 400x7.5 = 3.0Ghz
Set your Ram to 400mhz in your bios.
Trust me it will love it.