Did you do some overclocking? Cause the Abit SA7 is well suited to overclock
ABIT SoftMenu™
The overclocking function includes CPU frequency, Vcore, multiplier, chipset & DDR voltage and AGP VDDQ voltage adjustment available to maximize your system performance.
If you didn't oc then you don't need liquid cooling, good heatsinks and fans will do the job. go for PAPST fans.
You are sure your RAM is working properly?