Please comment on my overclocked x2 5000+

http://i43.tinypic.com/5mb7z4.jpg
http://i44.tinypic.com/20z8a3s.jpg

AMD Athlon X2 5000+ 2.6GHz
ASUS M2N68-CM motherboard
Kingstong 2GB DDR2-800 memory

please comment or give me recommendations on my overclocking
is there something im doing wrong?
what about the memory and timing? is it ok run it beyond 400MHz?

and the temps. i know there's an issue on brisbane cores but im still worried coz i still don't know the exacte temps. i'm just thinking it's 12 degrees higher that's why its toooo high..

about the bios....
no HT multi
spread spectrum -- what is this??

what else can i do to achieve max OC to my system??

thanx...

http://i40.tinypic.com/vi00tw.jpg

i monitored the temps using different cpu monitoring utilities at stock clock. i guess those were the best cpu monitoring utilities, but they have different readings...

coretemp - 65-68
cpuidhw - 67-65
hmonitor - 58 (cpu0 - 47)
everest - 44-47
speedfan - 44 (core)


i've read about this on the web and forums like this, and they think that the diode sensor is somewhat defective or misplaced - the outside temp is being monitored.
i'm taking a smart guess here that the real and correct reading is 52-53 degrees, since it's the average reading of 5 utilities.

what do you think guys?