You mentioned heat a problem. That is the basic reason for suggesting an AM2 processor over all others. The wattage of AM2s comes in two flavours, one with 65w and another with 89w, this is definitely less heat consuming than the cpu that would go into your ASUS A8R32-MVP mobo, ie. , AMD 939 runs at 125w. Think of long hours of PC running on electricity and heating being another. My suggestion of ASUS M2N32-SLI Deluxe is just a suggestion. There are mobo of 570 series by MSI selling at $89 and running AM2 processor with DDR2. Certainly going by the preliminary reports, AM2 does a little difference in benchmarks except being energy efficient. But the things certainly are going to change. Moreover using AM2 compatible mobo keeps you insured for later upgrades both in terms of memory and CPU, since like Intel, AMD is more likely to focus on DDR2 and AM2 platforms. I was also in the process of buying Asus A8N series with 939 support. But for the time being I have shelved the plan and would certainly upgrade to AM2 platform, SLI doesn't concern me.