Need help overclocking my memory

[strider-43]

First of all my current specs are:

AMD Athlon 64 x2 4800+ (OC'd to 2.75GhZ)
ASUS M2A-VM MoBo
OCZ reaper 2x2gb DDR2 800


on newegg (where I bought my ram) it lists the timings at 4-4-4-15. My memory

I installed it and everything is looking OK except my timings are at 5-5-5-18.

As far as I can tell I can not adjust my timings in the BIOS only the memory voltage witch I switched from auto to 2.1v because thats whats its rated @ on newegg My MoBo

here are the cpu-z images,

Is there any way I'm not thinking of to adjust my timings to 4-4-4-15 or better? Is 4-4-4-15 a noticeable difference from 5-5-5-18?

 

[mcnuggetofdeath]

Applications will cycle through faster with lower latency, but are provided with less bandwidth. If you cant adjust timings then try upping the memory speed as far as you can while still having it pass memtest86.

 

[strider-43]

Applications will cycle through faster with lower latency, but are provided with less bandwidth. If you cant adjust timings then try upping the memory speed as far as you can while still having it pass memtest86.

My MoBo only has four different speeds - ddr2 400 533 667 and 800 I'm running @ DDR2 800 now.