Description
The SilverStone ALTA G1M redefines the Micro-ATX form factor by adopting a vertical orientation that prioritizes thermal efficiency and desk space. By rotating the motherboard 90 degrees, the case utilizes the natural chimney effect, where rising heat is accelerated by a massive pre-installed 180mm Air Penetrator fan at the base. This design ensures that even high-performance components remain cool under heavy loads while maintaining a sleek, minimalist aesthetic that fits seamlessly into modern workspaces or gaming setups.
This product is for:
- Small Form Factor Enthusiasts: Users who want the compact nature of a vertical tower without sacrificing the expansion options of a Micro-ATX motherboard.
- High-Performance Gamers: Builders requiring clearance for full-sized triple-fan graphics cards up to 355mm in length.
- Minimalist Professionals: Individuals seeking a clean, professional look with a small footprint to maximize available desk real estate.
- Cooling Purists: Those who prioritize air pressure and natural convection for consistent thermal management.
- Content Creators: Users needing liquid cooling support, as the side bracket accommodates radiators up to 360mm for high-TDP processors.
Detailed specifications:
- Motherboard Compatibility: Micro-ATX (9.6" x 9.6"), Mini-ITX (6.7" x 6.7")
- Primary Cooling: 1 x 180mm Air Penetrator fan included (bottom intake)
- Radiator Support: Side mount supports 360mm, 240mm, or 120mm configurations
- GPU Clearance: Maximum length of 355mm and width of 165mm
- CPU Cooler Height: Up to 159mm (without side fans/radiator)
- Power Supply Support: SFX and SFX-L form factors (up to 130mm depth)
- Front I/O: 1 x USB Type-C, 2 x USB 3.0, 1 x Combo Audio Jack
- Dimensions: 200mm (W) x 507mm (H) x 307mm (D); 31.1 Liters
Building in the ALTA G1M offers a streamlined experience thanks to its thoughtful cable management routing and accessible panels. The vertical layout means all rear I/O ports are positioned at the top of the case under a removable mesh cover, allowing for clean cable exits. The 31.1-liter volume is efficiently utilized, providing enough internal depth to house modern power-hungry GPUs while the bottom-to-top airflow path significantly reduces the accumulation of hot air pockets commonly found in traditional horizontal layouts.
Compared to standard Micro-ATX towers, the ALTA G1M occupies significantly less horizontal surface area, making it comparable to many ITX cases in footprint while offering four expansion slots. While traditional cases rely on multiple smaller fans to move air front-to-back, the ALTA G1M’s single 180mm Air Penetrator fan moves a higher volume of air at lower noise levels, providing a more efficient cooling-to-noise ratio. It bridges the gap between ultra-compact SFF builds and full-sized towers by supporting 360mm AIO coolers, a feature rarely seen in cases with this specific footprint.
Q&A:
- Does the SilverStone ALTA G1M support standard ATX power supplies?
No, the ALTA G1M is designed specifically for SFX and SFX-L power supplies to maintain its slim vertical profile.
- What is the maximum graphics card size supported?
The case supports GPUs up to 355mm in length and 165mm in width, which covers most flagship triple-fan cards.
- Can I install a liquid cooler in this case?
Yes, the side bracket supports liquid cooling radiators up to 360mm, provided you are not using that space for additional 3.5-inch hard drives.
- How does the 90-degree motherboard rotation affect cable management?
The motherboard's rear I/O faces the top of the case. Cables are routed through a dedicated channel at the top and exit through the back, resulting in a very clean exterior look.
- Is the bottom 180mm fan replaceable?
Yes, the 180mm Air Penetrator fan is the primary intake, but the case also features mounting points for additional 120mm fans on the side and rear depending on your storage configuration.
