Hey,
I received my LZ7 XTD yesterday. My overall impression is very good, building in the case is not hard, I only have a few nitpicks about the whole thing. I've got a fully black case with a "smoked" side panel to show off the GPU, and the "XL Vent" top to improve its airflow. My system specs are: MSI B450i, AMD Ryzen 3700X, AMD RX 5700XT (reference card), Noctua U9S, an additional Noctua fan for exhaust and a Prolimatech Ultra Sleek Vortex for intake.
Assembly impressions:
There are no separate instructions for the LZ7 XTD, you just get the same booklet as comes with the LZ7, and an additional sheet which highlights the differences. Unfortunately the additional sheet doesn't make it obvious when you should do each of the tasks listed on it in relation to the steps in the LZ7 booklet, which leads to some funny situations. Also, the original LZ7 instructions do not take into account that you might be working with a tower cooler, which makes the order of some steps awkward.
This is not Lazer3D's fault, I'm pretty sure it would've been smoother if I were a more experienced PC builder. Just in case this helps anyone, I'll give you a list of the gripes I had:
- There is a step which instructs you to screw the fully assembled ITX board into the case. So I assembled my ITX board including the tower cooler and everything, only to find out that now there are some connectors on the board which I can't reach. So I ended up disassembling the right side panel in order to properly access the fan connectors and the CPU power socket on the board.
- The "DC/DC" back panel doesn't match the one on the picture. According to the picture it should have two different slots for the AC power plug, but mine had only one, at the more inconvenient location. I had some trouble finding a good way to arrange the AC power cable.
- The booklet suggests that you can mount the fan grill either on the inside or the outside of the right side panel, but it turns out that if I mount it on the inside, then the fan blades of the Ultra Sleek Vortex end up hitting the grill. So I had to re-mount the grill on the outside.
- If you want to mount an exhaust fan on the "DC/DC" back panel, do that at the very end of the build, otherwise it makes it hard to screw the AC power plug in place, and it may prevent you from reaching some connectors. In total, I had to unmount that fan like 2-3 times before I got everything right.
Inserting the GPU and placing the left, front and top panels is pretty painless. I would recommend to plug in your computer and turn it on for testing,
before you finish the case. Since I don't use a 2.5" drive (just an M.2), I ended up not needing the panel on which these are supposed to be mounted. This allowed me to have a significantly less messy cable situation, since I was able to tuck most of the cables behind the SFX PSU. I'm sure there is a special place in hell for the people who invented these PSU cables, though.
After assembling the case:
I didn't realize that such a powerful computer can be this small. Especially with the stand, the LZ7 XTD takes up very little space. It can easily be placed on a desk. (I don't think it would take up much space even without the stand.) If you take some extra care to obstruct the fans as little as possible, you'll get a case with excellent air flow.
With my previous case, I had issues with the Ryzen going up to 80-85 C. In the LZ7 XTD, even if I set the fans to a relatively low RPM, it barely reaches 70 C, and that only after several minutes of all-core load. The idle temperature is 35-40 C, though like I said I set my fans to a lower RPM when the system is not under load. I'm impressed. I believe that this air cooling would work for more powerful processors just as well.