Re: I'm planning on upgrading my RAM...
After further verifications, it looks like I am already not running them in dual channel (according to cpu-z). The 32bits semprons aren't taking dual channel but I have a 64bits one. And I heard there was some differences in the specs...
My Computer:XBlade ATX 450W Case
AMD64 Sempron 3100+
1GB DDR400: 2x512mb
XFX Geforce 8600GT XXX 256mb [Shipping, I have a 6600 @500/666 right now]
WD 7200RPM 160GB 16mb cache [partionned as 2x80]