SGPC vs SilverStone: PC Cases Compared by Specs
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This SGPC vs SilverStone PC case guide compares two distinct small form factor designs. Both options target builders seeking compact systems, but they serve different spatial and performance needs. The SGPC K39 is a true 5L portable chassis built for Mini-ITX components. The SilverStone SG11B is a larger Micro-ATX case that accommodates standard ATX power supplies. You need to weigh portability against internal expansion space.
Key differences
| Aspect | SGPC 5L Portable Mini-ITX Case | SilverStone Micro-ATX Small Form Factor Case |
|---|---|---|
| Motherboard Support | Mini-ITX | Micro-ATX, Mini-DTX, Mini-ITX |
| Case Volume | 5.1L | not listed |
| Max GPU Length | 185mm | Any length |
| Power Supply | Flex-1U | ATX PSU |
| Dimensions | 4.7 x 8.7 x 7.7 inches | 15 x 13 x 19 inches |
| Side Panel | Ventilated Steel | not listed |
Which one should you choose?
Choose SGPC 5L Portable Mini-ITX Case if
- You need a backpack-friendly system under 5L for travel.
- You are building with Mini-ITX boards and Flex-1U power supplies.
- You prioritize a compact footprint for small desks.
Choose SilverStone Micro-ATX Small Form Factor Case if
- You require support for standard ATX power supplies.
- You plan to install graphics cards longer than 185mm.
- You want to use Micro-ATX motherboards for extra expansion slots.
Verdict: Choose the SGPC K39 if your priority is extreme portability and a tiny 5L footprint. Select the SilverStone SG11B if you need to fit standard ATX components and longer graphics cards. The SG11B offers significantly more internal flexibility for desktop builds.
SGPC K39 vs SilverStone SG11B Specs
Motherboard support
The SGPC K39 is designed strictly for Mini-ITX motherboards. This limits you to the smallest board form factor, which is essential for its ultra-compact 5.1L volume. The SilverStone SG11B offers broader compatibility. It supports Micro-ATX, Mini-DTX, and Mini-ITX boards. If you need more expansion slots or RAM slots than Mini-ITX provides, the SilverStone option is the clear choice. The SGPC forces a specific, minimal build path. The SilverStone allows for mid-sized boards within a small chassis. This flexibility makes the SilverStone more versatile for different builder needs.
Tower size
Size is the biggest difference between these two cases. The SGPC K39 measures 4.7 by 7.7 by 8.7 inches. It weighs 4.14 pounds. This tiny footprint fits easily in a backpack or on a small desk. The SilverStone SG11B is much larger. It measures 15 by 19 by 13 inches. It weighs 13.5 pounds. The SilverStone is still considered small form factor compared to standard towers. However, it requires a dedicated space on your desk. The SGPC wins for portability and minimal desk usage. The SilverStone wins if you have a standard desk and want more internal room.
GPU compatibility
Graphics card support varies significantly. The SGPC K39 limits GPUs to 185mm in length and 43mm in thickness. You must also use a compatible riser cable for installation. This restricts you to low-profile or short cards. The SilverStone SG11B supports graphics cards of any length. This allows you to use full-sized desktop GPUs without restriction. If you plan to game with a powerful card, the SilverStone is the only viable option. The SGPC is suitable only for entry-level or compact gaming builds. The SilverStone provides far greater freedom for hardware selection.
Power supply layout
Power supply choices define the system's efficiency and size. The SGPC K39 uses a Flex-1U power supply layout. These units are small and often noisy but save significant space. The SilverStone SG11B is compatible with standard ATX power supplies. ATX PSUs are more common, quieter, and generally more reliable. They also offer better wattage options. The SGPC requires you to find a specific, smaller PSU type. The SilverStone lets you use any standard ATX unit you already own or prefer. This makes the SilverStone easier to build and upgrade later.
Connectivity and storage
Front I/O and storage options differ between the models. The SGPC K39 includes USB 3.2 and Type-C ports for high-speed data transfer. It also provides two 2.5-inch SSD or HDD bays with anti-vibration mounts. The SilverStone SG11B features ample capacity for 2.5-inch drives. However, the provided data does not list specific front panel ports or drive bay counts. We can only confirm the SilverStone has generous internal drive space. The SGPC offers explicit modern connectivity options on the front. If you need Type-C, the SGPC is better specified. For raw drive capacity, the SilverStone is likely superior, but details are missing.
Which SFF Case Fits Your Build
Portable Mini-ITX gaming builder
The SGPC K39 offers a true 5.1L volume that fits in a backpack. It supports Mini-ITX boards and GPUs up to 185mm long. You get USB 3.2 and Type-C ports plus two 2.5-inch drive bays. This compact steel chassis is ideal for transportable gaming setups.
Builder needing larger motherboard support
The SilverStone SG11B supports Micro-ATX, Mini-DTX, and Mini-ITX motherboards. It accommodates graphics cards of any length. You also get ample space for CPU coolers up to 82mm high. This case fits ATX power supplies, offering more flexibility for component selection than smaller SFF options.
User prioritizing GPU length limits
If you plan to use a large graphics card, the SilverStone SG11B supports cards of any length. The SGPC K39 limits you to 185mm. The SilverStone design allows you to install standard-sized GPUs without worrying about clearance issues in this small form factor chassis.
The products compared
SGPC 5L Portable Mini-ITX Case
Best for: experienced SFF builders needing portability
- Motherboard Support
- Mini ITX
- Case Type
- SFF
- Side Panel
- Ventilated Steel
- Max GPU Length
- 185mm
- Case Volume
- 5.1L
- Tower Size
- Small Form Factor
View on Amazon: SGPC 5L Portable Mini-ITX Case Affiliate link
The SGPC K39 is a 5.1L Mini ITX case built for compact, portable builds. It supports graphics cards up to 185mm long and 43mm thick, provided you use a compatible dual reverse riser cable. The chassis uses Flex-1U power supplies and includes USB 3.2 and Type-C ports. Its ventilated steel panels aid airflow in this dense layout. It suits builders who need a small footprint for gaming or office use.
Pros
- Compact 5.1L volume fits small desks
- Supports Mini ITX motherboards
- Ventilated steel side panels for airflow
- Includes USB 3.2 and Type-C ports
Cons
- Requires a compatible riser cable for GPU installation
- Not recommended for novice builders
- Limited to 185mm GPU length
Good fit if
- You need a truly small form factor PC
- You are comfortable with advanced SFF assembly
- You want a portable gaming chassis
Skip if
- You are a first-time builder
- You plan to use a standard-length graphics card
- You prefer a tower case design
Verdict: SGPC K39 5L Mini ITX Case is a specialized chassis for experienced builders who prioritize extreme compactness over ease of assembly. It fits users who can manage riser cable setups and need a portable Mini ITX system.
SilverStone Micro-ATX Small Form Factor Case
Best for: Micro-ATX builds with long GPUs and ATX PSUs
- Motherboard Support
- Micro-ATX, Mini-DTX, Mini-ITX
- Case Type
- SFF
- Max GPU Length
- Any length
- Tower Size
- Small Form Factor
- Dimensions
- 19 × 15 × 13 inches
- Weight
- 13.5 pounds
View on Amazon: SilverStone Micro-ATX Small Form Factor Case Affiliate link
The Silverstone SG11 is a small form factor case for Micro-ATX, Mini-DTX, and Mini-ITX motherboards. It supports ATX power supplies and graphics cards of any length. The chassis allows for CPU coolers up to 82mm in height. It offers significant capacity for 2.5-inch drives. This compact build measures 19 by 15 by 13 inches and weighs 13.5 pounds.
Pros
- Supports graphics cards of any length
- Fits Micro-ATX, Mini-DTX, and Mini-ITX motherboards
- Compatible with standard ATX power supplies
- Accommodates CPU coolers up to 82mm tall
Cons
- Limited to Micro-ATX motherboard size maximum
- Large physical footprint for an SFF case
- Heavier build at 13.5 pounds
Good fit if
- You need to fit a full-size ATX power supply in a small chassis
- You plan to use a graphics card longer than standard compact cases allow
- You require support for Mini-ITX or Mini-DTX motherboards
Skip if
- You require a case for standard ATX motherboards
- You prioritize the lightest possible build weight
- You need a case with a significantly smaller external footprint
Verdict: Silverstone SG11 Micro-ATX SFF Case fits users who need to house a standard ATX power supply and long graphics cards in a compact Micro-ATX chassis. It is a practical solution for builders prioritizing component compatibility over minimal size.
Specifications side by side
| Spec | SGPC 5L Portable Mini-ITX Case | SilverStone Micro-ATX Small Form Factor Case |
|---|---|---|
| Motherboard Support | Mini ITX | Micro-ATX, Mini-DTX, Mini-ITX |
| Case Type | SFF | SFF |
| Side Panel | Ventilated Steel | not stated |
| Max GPU Length | 185mm | Any length |
| Case Volume | 5.1L | not stated |
| Tower Size | Small Form Factor | Small Form Factor |
| Use | Gaming | not stated |
| Dimensions | 7.7 × 4.7 × 8.7 inches | 19 × 15 × 13 inches |
| Weight | 4.14 pounds | 13.5 pounds |
| Color | WHITE | Black (SG11) |
| Model | K39 | SG11B |
Frequently asked questions
Can the SGPC K39 fit a standard ATX power supply?
No, the SGPC K39 is a specialized 5L Mini-ITX chassis. It is designed for extreme compactness and does not support standard ATX power supplies. You must use smaller form factor power solutions or external adapters to fit within its 4.7 by 8.7 by 7.7 inch dimensions.
Which case is better for installing long graphics cards?
The SilverStone SG11B is the better choice for long GPUs. It is built to house standard ATX power supplies and longer graphics cards within a Micro-ATX chassis. The SGPC K39 prioritizes minimal volume, limiting its internal space and making it less suitable for large expansion cards.
Is the SilverStone SG11B suitable for a desktop gaming setup?
Yes, the SilverStone SG11B is suitable for gaming builds requiring Micro-ATX support. Its larger 15 by 13 by 19 inch footprint allows for better airflow and component compatibility. It accommodates standard ATX PSUs, which are common in gaming systems, unlike the smaller SGPC option.
How much does the SGPC K39 weigh?
The SGPC K39 weighs 4.14 pounds. This lightweight design supports its role as a portable Mini-ITX case. It is significantly lighter than the SilverStone SG11B, which weighs 13.5 pounds, making the SGPC easier to transport for builders who need mobility.
Does the SilverStone case support Mini-ITX motherboards?
The provided data specifies that the SilverStone SG11B supports Micro-ATX motherboards. It does not explicitly list Mini-ITX support in the available specifications. You should verify compatibility with your specific board, as the case is designed primarily for the larger Micro-ATX form factor.
What color options are available for the SGPC K39?
The SGPC K39 is listed in white. This color option is specified for the K39 model. The SilverStone SG11B is available in black, providing a distinct aesthetic choice for builders who prefer a darker chassis for their small form factor system.
Which case is more portable for LAN parties?
The SGPC K39 is more portable due to its small 5L volume and 4.14 pound weight. Its compact 4.7 by 8.7 by 7.7 inch dimensions allow it to fit easily into bags. The SilverStone SG11B is larger and heavier, making it less convenient for frequent transport.

