SilverStone Technology RM44 4U Rackmount Server Chassis with Enhanced Liquid Cooling Capability (up to 360mm Radiator), SST-RM44

Great upgrade 4U case for my home lab cloud server. I needed more room to add a RTX-5090 to this rig, and didn't want to go all the way to a 5U case. To be clear, there is only one 5090 card brand (Zotac) that will fit this 4U case with enough room on top to comfortably fit the 600W connector & wiring. If using another brand, I would probably go with a 5u case. I installed the Zotac Solid OC specifically in this build. Other Zotac models will likely fit as well. The SOLIDs 137mm height is a perfect fit for this case (which specifies a154mm max height). The case came with a number of front GPU support brackets. I used one, and it makes for a very solid mount. The 5090s aluminum frame holes at the front of the card lined up perfectly with the holes in the provided bracket. With the card secured with three screws in the back, and the case bracket in the front, I am confident the card will not come loose when removing/installing this case in my rack. As far as cooling, the case will fit one Noctua NF-A14x25r G2 PWM (140mm) and two NF-A12x25 PWM (120mm) in the front panel. It is tight, but can be done. Use the adjustable slots instead of fixed holes to slide the two 120mm fans far to the left and right sides of the case to leave room for the 140mm in the middle. I loaded this case up with a total of 8 fans (added a custom slot bracket with (2) 40mm fans for a total of 7 case fans and a Noctua NH-D12L CPU cooler w/fan). This configuration provides fantastic airflow and dropped the CPU temp by a solid 20C over the previous 2U case which was cooling challenged even with a Ghost S1 CPU cooler and (4) 80mm case fans.. Overall well made case. Even with a 10G NIC card and the RTX 5090 installed, there is still room to access at least 2 of the SATA 2.5" mounting plates comfortably (no wires/cards in the way). I now plan on adding a couple of large SATA drives in raid mirror as a home network file server and for backups, making this machine even more of a Swiss army knife of a server. This combination of fans is almost completely silent, even with a moderate load. With the fans at 100% it is only noticeable if you are in the same room, but I doubt you would hear it in the next room. Overall very happy with this case. One negative ,but not enough to remove a star, the manufacturer does not sell a set of sliding rails that fits this case in short racks (slightly less than 22" deep). This case uses screwless rail studs to connect the rails, and there is no option for screw on rails. The only rails designed for this case are too long for my rack. I ended up using the Cyber Power 4POSTRAIL, which worked, but is VERY tight when sliding in the heavy duty rack ears on this case. Installer trick, don't lock down the rail mounting screws (just hand snug them). After you slide the case in fully (might take some wiggling), lock the back screws and the bottom two screws in front. This will lock the rails in place with perfect spacing/alignment, then you can pull the case out and lock down the top two front screws.

Deep enough that it can hold just about anything that a regular gaming case can. Very easy to build in. I have a an ATX motherboard, a 3 slot GPU, and a full size ATX 1000w PSU in this and it does great. Airflow is as good as the Coolermaster case I pulled this build out of. Temps are right about the same as before and I don't notice the system making any more noise than the other devices on my rack which is pretty quiet. Running 3 Corsair ML120s across the front from the previous build. Magnetic dust filter on the front for easy cleaning. Case is very expensive but I don't think I will ever need to buy another case for my gaming pc so I figured I could splurge a little on this.

As an enthusiast, I've always wanted to take my gaming and computing experiences to the next level by building a high-end home lab or rack-mounted gaming PC. And that's exactly what I did with the SilverStone Technology RM44 4U Rackmount Server Chassis. **Unparalleled Build Quality**: From the moment I opened the box, I was impressed by the attention to detail and build quality of this chassis. The solid aluminum frame, heavy-duty screws, and precision-cut panels all contribute to a sense of premium craftsmanship that's hard to find in other products at this price point. **Gaming-Grade Cooling**: With its support for up to 360mm AIO liquid coolers or radiators, the RM44 is perfect for high-performance builds that generate a lot of heat. Whether you're building a gaming PC or a home lab server, this chassis has got you covered when it comes to keeping your components running smoothly and efficiently. In short, the SilverStone Technology RM44 4U Rackmount Server Chassis is an absolute must-have for anyone building a high-end home lab server or rack-mounted gaming PC. Its unparalleled build quality, gaming-grade cooling, and premium features make it the perfect choice for enthusiasts who demand the best from their systems. IT CAN ALSO BE USED AS STANDARD DESKTOP TOWER CHASSIS!! EDIT: Lowering star rating to 4 stars. Purchased the 4U 20bay chassis and the quality control is just kinda ehh. Some of the 3.5" drive screws did not have threads, one of the two rail slides do not lock in the pulled out position unless forced by pulling super hard (which is not a smart thing to do when ther eare a bunch of spinning disks in the server), and one of the three hotswappable fans came with the connector upside down and the fans connector was jammed down into it and bent out of place. The hotswap fans also can not be adjusted unless you want to unplug them from the hotswap plugs and plug them into the motherboard instead, removing the ability for them to be hotswappable. They are extremely loud and do not recommend using them in the default configuration if the chassis is going to be in the same room as you, unless your someone who doesn't care about noise.

I'm really used to buying freestanding desktop PCs, and this is my first rackmount case for a unique AI home lab/server. I was expecting this to be 4 pieces of sheet metal hot glued together. The case is surprisingly well built. Expensive? yes. But the quality of the paint/powder coating, the thickness of the panels, and the exceptionally smooth hinges of the front panel are all nicer than my car. Small touches like labeling each bag of screws and the great packing makes this seem well thought out and worth the money. I bought this for the 8 PCIe slots. I was able to fit 4 3060 Supers on a supermicro board with no problems. I imagine larger 3080 or 4090 cards would not clear the vertical height, just a guess. Some nitpicks: 1. the price, (obviously). 2. the included feet for standing this up vertically are plastic and feel cheap compared to the rest of the build. You need to remove the bottom handle (not hard to do) or else the feet won't touch the ground. 3. the included instructions are decent, but don't tell you where to put the standoffs for the size of MB you're using. I'd still buy it again.

I used this case to convert my old Threadripper motherboard and processor into a new Proxmox home lab. The first case I used was cramped, and it was hard to get air moved through well. This case takes more space, but I could go back and reuse my Corsair iCUE H115i RGB Pro XT 280mm liquid cooler. That alone would have been quiet, but I swapped the fans for two Noctua 140mm simultaneously. I also pulled the two fans with the case and replaced them with Noctua NF-A8 PWM Noctuas. I don't know that the case fans would have been loud, but I doubt they would have been as quality or quiet as Noctua browns. The case is big enough that I was able to scrounge up a GTX 1080 8GB graphics card I had lying around. The card fits snugly with the cables against the cross support, but it fits. Proxmox won't need the card, but I can directly pass through the PCI to give access to my virtual machines. The case design could have had better locations for spinning drives. There are several plates for mounting 2.5" drives, but the only places for 3.5" are on the crossbar. That is the weakest part of the case, as they could have added a carrier for more near the front if they wanted to. This is not an issue for me as I am running everything off the M2 drives and ISCSI to my Synology NAS right now. Overall, it's a nice case and works well for my purpose. I will solve its few limitations by custom-building some carriers in the future.