S300 - Mini-ITX PC Gaming Case - Front I/O USB 3.0 Type - C Port - SFX Power Supply 100-130mm -Cable Management System - luminum Mini-ITX Motherboard Small Portable PC Case (PCIe 3.0 16X Riser Cable)

I like the case. It looks good and fits my bag well. Cable management is straightforward since the motherboard is mounted upside down and the airflow is logically designed. Adding a 12015 fan at the bottom is recommended to improve the thermal environment.

With size comes compromise, so if you’re looking to build a cutting-edge behemoth, look elsewhere...But what I needed was a modest quiet ‘living room-friendly’ gaming PC and this little fella fits the bill so well. There are challenges with such a small design, but with a little planning, they can be overcome. Mostly think about the power supply, if it's in budget, get a modular design (unlike me!) so you can route only the cables you need. Also take int account its size, I went with a BeQuiet3 which is small, but well-made made and even though it's only 350w, has enough juice to run the RTX5060 and Ryzen 5600. I ended up removing the front USB-C port entirely (my motherboard doesn’t support it) to make one less cable and provide room for a second exhaust fan.Temps are fine, there is a lot of ventilation on the sides and top, and I’m having fun playing more modern games again.I can definitely see why you wouldn’t buy this case and move up to something larger, but I love this little thing because it is small. The only bit I don’t really like is the ‘back’ of the computer, where all the wires plug in, is actually the side and on display in normal orientation, something that photos and videos of this case happily forget to show. So, I guess I need to buy an aesthetically pleasing power cable now, right?

It was a real squeeze, but I did manage to put it together. It was all fine until I realized that the GPU specially got really warm. I noticed Corsair do Slim Case Fans and I thought perfect and managed squeeze one in. Problem is they fit at the bottom and really it could do with something to blow the heat out the top.I decided to get the S400 model because as I was looking it up, it was only like an inch taller and wider. Moved it all into this new case and it solved it from the get go. CPU is like 10 degrees cooled when idle and the GPU sticks to 30 where it should. The S400 lets you have 2 full sized fans on the top and I think that's what the S300 needed.I gave this a 3 because the case itself is an amazing case, but I know most will look at this case first, but I recommend you consider the S400.

This is a great little case, its well build but badly designed. For an i3 no GPU ITX build it would be fine.I used an i7 and 3060 Ti - too hot. Temps are within range but with prolonged use (gaming) it would easily throttle.The GPU riser cable has a bend in it, meaning it curves against the GPU once installed. It get's too hot.The GPU layout is too tight, it was horrible trying to mount it.There is no space what so ever for fans once the PSU cables are installed. This means there is zero cooling to the case at all.Highlighted in red where fans should go - no clearence under MOBO for 120mm, PSU cables take up the 80mm slot.