ASUS P5B-Deluxe; Problems & Fixes

[t_p]

so far, i tried the following settings and starting getting errors at around 70% through with memtest:

cpu = 266
dram ddr2-800mhz (1:1, right?)
PCI express = auto
PCI clock = 33.33
spread = disabled
mem voltage = 1.85v
cpu vcore = 1.25v
FSB term - auto
nbvcore - auto
sb vcore - auto
ich = auto

timings:
Cas = 5
RAS to CAS = 5
RAS precharge = 5
RAS activate = 15
Write recovery = 6
TRFC = 42

Then tried the following and the system and thus memtest simply froze at 4% through:

cpu = 266
dram ddr2-800mhz (1:1, right?)
PCI express = auto
PCI clock = 33.33
spread = disabled
mem voltage = 1.90v
cpu vcore = 1.30v
FSB term - auto
nbvcore - auto
sb vcore - auto
ich = auto

timings:
Cas = 5
RAS to CAS = 5
RAS precharge = 5
RAS activate = 15
Write recovery = 6
TRFC = 35

Then tried some different timings per chuckbam but no luck and got tired of it all and tried a boot with these settings and then got a random reboot after a while:

cpu = 277
dram ddr2-831mhz
PCI express = auto
PCI clock = 33.33
spread = disabled
mem voltage = 2.0v
cpu vcore = 1.325v
FSB term - auto
nbvcore - auto
sb vcore - auto
ich = auto

timings:
Cas = 5
RAS to CAS = 5
RAS precharge = 5
RAS activate = 18
Write recovery = 6
TRFC = 42