volks1470 - That only applies to memory modules with those extra tall heatspreaders that sort of look like a comb. They, not the motherboard, interfere with large tower style cpu heatsinks. It's usually the memory slot closest to the cpu socket. Those extra tall heatspreaders are an advertising gimmick. Tom's Hardware and other sites have clearly demonstrated they do not improve memory cooling. In fact, the best memory cooling occurs when there are no heatspreaders at all. The subject came up again in the comments section of today's brand new review of cpu heatsinks.