ConnexionMontech Sky 3 – Loads of RGB and some clever stuff, plus a problem
We saw the Montech Sky 3 Glass at Computex 2025 however it has taken nine months for the case to finally launch. There have been a few changes along the way and the ‘Glass' part of the name has been ditched so perhaps we will never see the promised Mesh version. Regardless, this is an interesting compact ATX case that is packed with features and comes at a budget price.
Main features
- Adaptive Modular Bottom Chamber
- Detachable Top Radiator Bracket
- Seamless Horizon Lighting
- Future-Proof Graphics Compatibility
- Back-Connect Ready
- Integrated AX & RX120 PRO Airflow System
Specification:
Motherboard support: ATX, Micro-ATX, Mini-ITX (with support for back connections)
Power supply support: ATX.
Expansion slots: 7.
Included fans: 2x 120mm bottom intake RX120 PRO, 1x 120mm rear exhaust AX120 PRO.
Fan mounts: 3x 120mm/2x 140mm roof, 2x 120mm/140mm side, 1x 120mm/140mm rear.
Radiator mounts: 360mm/280mm roof, 240mm/140mm side, 120mm rear.
5.25-inch optical drive bays: None.
Internal drive bays: 2x 3.5-inch/2.5-inch.
Front I/O ports: 2x USB 3.0 Type-A, 1x USB 3.2 Type-C, audio.
Dimensions: 491mm H x 468mm D x 240mm W.
Testing
To put this case through its cooling paces we will be using a test system consisting of an AMD Ryzen 7 9850X3D, Palit RTX 5080 and an SSD. This system allows us to produce a substantial amount of heat and effectively test the Montech Sky 3‘s cooling capabilities.
Test System:
Processor: AMD Ryzen 7 9850X3D
CPU Cooler: Montech HyperFlow ARGB 360
Motherboard: MSI MAG X870E Tomahawk WiFi PZ
Memory: 32GB G.Skill TridentZ5 Royal Neo DDR5-8000
Graphics card: Palit GeForce RTX 5080 Gamerock OC 16GB
Power supply: Montech Titan PLA 1000W
SSD: Crucial T700 M.2 NVMe Gen 5
OS: Windows 11
Cooling Performance
Cooling Performance Overview
We stressed the Montech Sky 3 fairly hard and it performed well, although it got notably noisy as the fan speeds increased. If you are thinking about building a PC with an RTX 5090 and a Core i9-14900K we feel the compact nature of the Sky 3 might cause cooling issues, however that is an extreme scenario.
Closing Thoughts
Montech has done a number of things very well with the Sky 3, and the only issues we encountered have fairly simple explanations. This is a compact ATX case with very clean looks that can accommodate a huge graphics card and a 360mm AIO cooler, and it comes at a reasonable price. The RGB light show in the two glass panels adds to the appeal and our first, second and third impressions were all very favourable.
The downside is that Montech has clearly made the Sky 3 as svelte as possible, presumably to save cost, and this leads to the issues we discuss in our video. We are confident the Sky 3 will be very popular as a budget case for PC gamers and it offers very good value for money.
You can buy the Montech Sky 3 for $89.99 in Black or White
Pros:
- Loads of access for your PC build
- Two choices for the location of your power supply
- Easy to dismantle and remove the various components
- Glass panels at the front and side look very neat and clean
Cons:
- Not enough cable clearance inside the right hand panel for Project Zero
- Two of the screws on the PSU and fan shrouds are awkward to reach when the motherboard is installed.
- The Sky 3 is about 5mm too small in height and about 15mm too narrow.
KitGuru says: Montech's Sky 3 has been worth the wait and we will be intrigued to see whether they launch a Mesh version.
