Welcome to the forum!Hello,
New to the forums. Built my first sff pc recently in an sg13 and thought I would try moving into something a bit smaller. I like the design of the lz7, but I just need some advice on options I would have for cpu cooling. Here is my system:
Ryzen 2700 with stock wraith spire
Asus ROG Strix B450-I
Gigabyte RTX 2070 mini
G.Skill Flare X 2x8GB DDR4-3200
ADATA XPG SX8200 Pro 1TB M.2 SSD
Corsair SF 600 Platinum
The stock amd cooler has been doing its job well enough, but it looks like it's slightly too tall for the lz7 with sfx PSU installed. The main issue with most of the coolers I have seen recommended here is the RAM clearance. The kit I have stands about 40mm tall according to reviews I have seen, which I believe makes it too tall for the big shuriken 2 and nh-l12s. I would like to avoid having to get new memory if possible.
The big shuriken 3 shouldn't interfere with RAM but at 69mm tall it looks like it would just barely fit under the power supply and I would be concerned about the top fan being to close to the psu and not getting enough airflow.
Noctua nh-l9x65 is 65mm tall which would also put it really close to the psu.
The original nh-l12 would probably work with the 92mm fan at the bottom, most pictures I have seen show the bottom fan sitting next to the memory giving the memory extra clearance. The l12 is discontinued though and I haven't been able to find it anywhere for a decent price. Maybe I could get the l12s and just replace the 120mm fan with a 92mm at the bottom?
Cryorig c7 cu would probably work but doesn't seem to be in stock anywhere right now.
Noctua nh-l9a should work, but with lower performance than other options. Probably not much different than the stock cooler I'm using right now as far as cooling performance, but would like to find something better if possible.
Any other options I should look into? Other issues I might run into trying to fit my system in this case? Any advice would be much appreciated.
Its difficult to recommend a CPU cooler when using taller RAM, all the best coolers for the LZ7 unfortunately overlap the RAM. For example the Corsair Vengeance LPX is 31mm tall and the Noctua NH-L12S rests perfectly on top of these sticks.
The Ryzen 2700 is quite a demanding CPU, so ideally you could do with selecting one of the better CPU coolers such as the Noctua NH-L12S or the Scythe Big Shuriken 2. I think somebody recently posted some results with the new Big Shuriken 3 but it didn't perform that well in the LZ7, probably due to its top down fan being so close to the underside of the PSU, version 3 is slightly taller than version 2.
Even though the LZ7 has 70mm of CPU clearance, if your using a top down cooler (fan on top of cooler), then really I wouldn't use a cooler taller than 60mm to give the fan space to breath and work effectively.
So with that in mind if you want to keep your current RAM your best options maybe either (as you pointed out) the Noctua NH-L12a, but perhaps swap out the slim fan a thicker 25mm fan to give that extra bit of performance, or for the Cryorig C1 again swapping out the 92mm fan for a better model as the Cryorig fan can be noisy.
I hope that helps.