I have just started into the build of a new PC using the 890FXA-UD5 motherboard, but have found (to my annoyance) that the CPU cooler I have won't fit on the board because the DIMM slots are too close to the CPU.The CPU cooler that I thought would be ideal for this board is the Arctic cooler Freezer 7 Pro Rev 2
, which can sit over the CPU facing towards or away from the "GIGABYTE" 890FX heatsink.
However, this cooler will fit if only there are only 2 sticks of DDR3 in the DIMM slots, but with 4 sticks it is a no-go.
There is lots of space between the "Ultra Durable" MOSFET heatsink and the CPU, but none on the DIMM side. When the Artic cooler is installed, it overhangs the first DIMM slot by about one or two milimeters, making it impossible to install a 4th stick of DDR3 in that slot, regardless of whether DDR3 has cooling fins.
Putting the fan on the other side makes no difference. The problem with the Artic Cooler relative to this board is three fold:
1. it can only be mounted two ways, but never facing toward or away from the DIMMS, only parallel;
2. the fins are low down, close to the CPU, so the there is no "ceiling room" above the DIMMS, in fact there is a 4mm shortfall;
3. the cooler is is 10.4 cm (4.0 inches) wide, which means the fins pertrude over the 4th DIMM slot by one or two millimeters.
There seems to be a similar "limited clearance" problem with the Nocurna, as this article illustrates
I think the proximity of the CPU to the DIMM slots is a design flaw with the 890FXA-UD5. It would be better if there was a row of capacitors between the CPU and the DIMMS in the same way there is a row of them between the CPU and "Ultra Durable" MOSFET heatsink.
Well, I have made my mistake, and had my rant, but has anyone suggest an CPU fan cooler that can fit when all 4 DIMMS are full?