I wanted to build a compact gaming PC for some time, finally built it last week and wanted to share my experience, since it might help others too.

From this /s, found Lian Li A3 as the perfect mATX cabinet for me since I don't need to buy expensive all-white components because it's a mesh panel.

I was a PC gamer 10 years back, bought a PS5 a few years ago, and even after 2 years was not able to get used to the controller. Also, game prices are pretty steep. But I found the base PS5 graphical power is more than enough for me, and I don't need 4K gaming. So I decided to build a compact PC and was waiting for an affordable 1080p/1440p GPU to launch.  
Right after AMD 9060 XT launched, I started planning for an mATX build. Following are my PC specs:

* **Processor:** AMD Ryzen 5 9600X – Price difference between 9600X and 7600X is close in my country
* **Motherboard:** MSI MAG B850M Mortar WIFI – Has good VRMs and 3 M.2 slots. I think this might be the best VFM mid range AM5 motherboard now
* **RAM:** G.SKILL Flare X5 32GB (16GBx2) 6000MHz DDR5 (CL30)
* **Storage:** WD Black SN770 2TB
* **GPU:** Sapphire Pulse Radeon RX 9060 XT 16GB
* **Cooler:** DeepCool AK620 CPU Air Cooler
* **PSU:** Corsair RM850x Gold ATX 3.1 Fully Modular
* **Cabinet Fans:** Arctic P12 PWM 120mm

There are a lot of posts in this sub related to fan configurations in the Lian Li A3. I went with the simple one mentioned in Lian Li's manual — **3 fans at the bottom as intake, one rear fan & one top rear fan as exhaust**. Also PSU is mounted in the side so that it can intake fresh air from side mesh panel, also it was easier to do cable management.

My CPU temps are 50–53°C (Package, CCD is at 33°C) at idle and 60–63°C while gaming. GPU temp while gaming is around 64°C

My first mATX Build - Lian Li A3 x RX 9060 XT