I have a Norco 4224 case, which is basically a cheap 4U, 24-bay hdd chassis. You can find more details about it here http://www.norcotek.com/item_detail.php?categoryid=1&modelno=rpc-4224
So I've selected all my internal components for my server build. The last thing to select now is the heatsink+CPU fan, as well as 3 120mm case fans (installed on a "fan wall" in the middle of the case) and possibly 1-2 80mm case fans (rear). Obviously in this chassis, a tower heatsink with a fan blowing on the same trajectory as the 120mm case fans would be ideal.
I would love to throw in a Noctua DH14 in there, however, it just won't fit. Unfortunately, neither will many (any?) of the large Tower heatsinks in the 120mm fan variety. From this thread at OCAU
, the Noctua U12P seems to be about 1cm too tall to close the same case that I have (Norco 4224). Direct link to image: http://www.overclockers.com.au/pix/index.php?page=image&id=qqfvy
(I have no affiliation with OCAU or the users in that topic, hope it's OK to post links).
Most of the Noctua 120mm tower coolers are around 158mm, and all of the other coolers on the SPCR approved list are around the same height - can't seem to find any under 155mm, and I would suspect they would need to be at least under 150mm or so.
So, from what I can see, this leaves me with two options.
1. I can get a smaller tower heastsink and fan, such as the Noctua NH-U9B-SE2, as the user on OCAU did
2. Purchase a large-ish top-down cooler (that fits in the chassis).
However, in this particular chassis I'm really not sure which would be better. The Noctua BH-U9B has the airflow in it's favour, as it would be pushing in the same direction as the 120mm case fans from the wall. The middle 120mm fan would be blowing directly onto CPU cooler.
Yet perhaps the larger heatsink that a top-down cooler provides would be more beneficial. How would the dynamics of the top down cooler work in a case that already has three 120mm fan blowing across it? Again one of those will be blowing directly on the path of the CPU cooler. Would the top-down fan 'clash' with the 120mm fan wall blowing across?
My aim here is to make it as quiet as possible. I would be happy to also throw in an 80mm rear exhaust fan if that would help too. I have a low power Xeon 1260L going into it with a TDP of 45watt.
Would appreciate any advice/thoughts!
Thanks for reading.