I have just bought: MSI 790FX-GD70 4GB (2x2GB) CorsairTwinX XMS3 large heat sinks Thermalright Ultra-120 Couple of questions: the Thermalright blocks the first 2 DIMMS (the fan spring partially blocks DIMM3 but can be modified!) because of it's orientation. In the manual it says for a successful system boot up you must have memory in DIMM1 slot... but I have seen photos of my issue on a review of the motherboard with 'oversized' memory in DIMM3-4. If this isn't a problem which way should I orientated the cooler? Cool air in from the top of the case and hot air down towards the GFX? or the other way round? The northbridge heatsink doesn't get and nice air whoosing over it apart from the air being sucked out the back. The other option I have was to get the Corsair H50-1 and avoid any problems. The only problem is that the Lian Li X1000 (yes I have more money than sense...but it's soooo lovely ) has 140mm fans on the back and no way to fit the radiator. I have seen 140-120 convertors but that's normally to upgrade from 120 to 140 not the other way round. I am worried about the strength of the fixings versus the weight of the radiator! Any help/opinions would be appreciated. Anyone got a better idea about which CPU cooler would fit? As an aside, I'm really annoyed that in designing the AM2/3 socket, which hosts AMDs flagship CPUs, they didn't take into account the fact that many people will want to run overclocking machines with large heatsinked memory.