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.

The post Montech Sky 3 – Loads of RGB and some clever stuff, plus a problem first appeared on KitGuru.

Antec launched the original 900 case way back in 2006 which means this brand new 900 marks the 20th anniversary of this model. The name is the only thing they have retained while everything else has changed, and that is good as the original 900 was a bit weird. One major change is that the original 900 was aimed squarely at gamers while this new 900 is more of a workstation case, with acres of space and huge amounts of cooling.

Time stamps
00:00 Intro
00:39 Starting the tear down
01:55 Getting to the rear
02:23 Storage details
03:23 Fan connections / cooling support
05:39 System hardware
06:46 The PSU iShift kit
09:03 CPU cooler + GPU going in
10:10 Thermal tests
11:33 Closing thoughts

Specification:

• Motherboard support: ATX, E-ATX, SSI-CEB and SSI-EEB.
• Power supply support: ATX.
• Expansion slots: 8.
• Included fans: 3x 140mm Tranquil front intake, 2x 120mm P12R on the PSU shroud, 1x 140mm Tranquil rear exhaust.
• Fan mounts: 3x 120mm/140mm or 2x 200mm front, 3x 120 or 2x 140mm roof, 2x PSU shroud, 1x 120mm/140mm rear.
• Radiator mounts: 360mm/420mm front, 280mm/360mm roof.
• 5.25-inch optical drive bays: None.
• Internal drive bays: 4x 3.5-inch/2.5-inch, 5x 2.5-inch.
• Front I/O ports: 1x USB 3.0 type-A, 1x USB 3.1 type-C, audio.
• Dimensions: 622mm H x 547mm D x 250mm W.

Testing

To put this case through its cooling paces we will be using a test system consisting of an AMD Ryzen Threadripper 9980X, Palit RTX 5080 graphics and an SSD. This system allows us to produce a substantial amount of heat and effectively test the Antec 900‘s cooling capabilities.

Test System:

• Processor: AMD Ryzen Threadripper 9980X
• CPU Cooler: AMD Threadripper AIO cooler
• Motherboard: Gigabyte TRX50 AI TOP
• Memory: 128GB G.Skill T5 Neo RDIMM DDR5-6400 in Quad Channel
• Graphics card: Palit RTX 5080 Gamerock OC 16GB
• Power supply: Antec Signature 2200 Platinum 2200W
• SSD: Crucial T705 Gen5 M.2 NVMe
• OS: Windows 11

The loads on our test system were very high with a total system power draw of 880W at the wall socket, split evenly between the 64-core Threadripper CPU and RTX 5080 graphics card. We found the Antec 900 was able to cool efficiently without too much noise, however when we ramped up the fans to around 2,000rpm the noise levels became offensive.

Closing Thoughts

In the 20 years since Antec launched the original 900, every single aspect of PCs, gaming and workstations has changed. While we like the nod to the original name we feel it is slightly confusing and best forgotten, as the Antec 900 (2026) is completely different to the Antec 900 (2006), and we mean that in a good way.

You can pack a huge amount of hardware in this cavernous case, and you can see that our huge Threadripper motherboard and mighty Palit RTX 5080 graphics card are somewhat lost in all that space. The upside is that you can run your cooling system low and slow and still get a good temperatures with low noise. On the other hand we recommend you don't move your finished PC around too much as it is likely to weigh a tonne.

MSRP pricing for the Antec 900 is £249/€289 EURO inc VAT.

Pros:

• Massive main compartment.
• Smart styling.
• Easy access to the storage bays and power supply.

Cons:

• A PWM hub is not included.
• The position of the top fan/radiator mounts don't have much flexibility.
• The accessory kit doesn’t include spare catches for the panel mounts.

KitGuru says: The new Antec 900 is big and beefy and well-suited to your next workstation build.

The post Antec 900 Case Review (2026) first appeared on KitGuru.