SilverStone or FSP? PC Power Supplies Compared in 2026
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This SilverStone vs FSP PC power supply comparison highlights two very different tools. Both brands serve specific niche markets, but their products solve distinct problems. The SilverStone unit is an adapter cable for linking two power supplies, ideal for mining rigs. The FSP unit is a complete, high-efficiency power supply for small form factor builds. You need to choose based on whether you are building a standard PC or a specialized mining setup. The main difference lies in their function: one connects, the other powers.
Key differences
| Aspect | SilverStone Dual 24-Pin Power Supply Adapter Cable | FSP 400W Gold Flex ATX Mini ITX Power Supply |
|---|---|---|
| Product Type | Dual 24-pin adapter cable | 400W Flex ATX power supply |
| Efficiency Rating | not listed | 80 Plus Gold |
| Form Factor | not listed | Mini ITX / Flex ATX |
| Dimensions | 25.6 inches long, 2.5 inches wide | 5.9 inches long, 1.6 inches wide |
Which one should you choose?
Choose SilverStone Dual 24-Pin Power Supply Adapter Cable if
- You are setting up a cryptocurrency mining rig that requires two power supplies to start simultaneously.
- You need a cable to connect a single 24-pin motherboard header to two separate power supply units.
- You require a longer cable length for flexible routing in a large chassis.
Choose FSP 400W Gold Flex ATX Mini ITX Power Supply if
- You are building a small form factor PC using Mini ITX or Flex ATX cases.
- You want high energy efficiency with an 80 Plus Gold certification.
- You need a complete power solution for networking or industrial applications.
Verdict: These products serve entirely different purposes. Choose the SilverStone adapter if you are building a multi-PSU mining rig. Choose the FSP power supply if you need a compact, efficient unit for a small PC case.
SilverStone vs FSP PSU Specs
Primary Function
These products serve entirely different roles in a PC build. The SilverStone SST-PP10 is a dual 24-pin adapter cable. It allows you to connect and start two power supply units from a single motherboard connector. This setup is designed for cryptocurrency mining rigs that require extra power. The FSP FSP400-60FGGBA is a complete Flex ATX power supply. It delivers 400W of power directly to your system components. It is a standalone unit rather than an accessory. You need one for a standard small form factor build, while the other helps manage multiple units in a specialized mining setup.
Form Factor
The FSP unit is built for Mini ITX cases. It uses a Flex ATX form factor, measuring 5.9 inches in length, 3.25 inches in height, and 1.6 inches in width. This compact size fits into small chassis where standard ATX supplies cannot go. The SilverStone adapter has no power delivery form factor. It is simply a cable assembly with specific dimensions of 25.6 inches in length, 2.5 inches in width, and 0.5 inches in height. It does not fit inside a case as a power source. It sits between two existing power supplies. The FSP is a true form factor solution for tight spaces.
Efficiency Rating
Efficiency determines how much electricity is wasted as heat. The FSP power supply holds an 80 Plus Gold certification. This means it achieves over 90% efficiency at typical loads. High efficiency reduces operating costs and heat output in your system. The SilverStone adapter does not have an efficiency rating. It is a passive cable with no electronic components to regulate power conversion. It simply splits the electrical connection. There is no efficiency data to compare for the SilverStone unit. For energy-conscious builds, the FSP Gold rating provides a clear advantage in power management.
Wattage Output
Power output is critical for running components. The FSP unit provides a rated 400W of continuous power. This is sufficient for small form factor systems with low-to-medium power needs. It includes a PCIe 6+2 pin connector for graphics cards. The SilverStone adapter has no wattage rating. It does not generate power. It relies on the two connected power supplies to provide the total wattage. The adapter itself does not limit or define the power output. It only facilitates the connection. The FSP offers a defined power ceiling, while the SilverStone depends entirely on your other hardware choices.
Cooling System
Thermal management keeps components safe during operation. The FSP power supply includes a 4 cm fan. This small fan delivers airflow at a low noise level. It helps dissipate heat generated during power conversion. The SilverStone adapter contains no fan. It is a passive cable assembly. It does not generate heat that requires active cooling. It simply conducts electricity from one point to another. There is no noise or airflow to manage for the SilverStone unit. The FSP provides active cooling for its internal components, while the SilverStone relies on the ambient air around the connected power supplies.
Connectors
Connectivity determines compatibility with your motherboard. The SilverStone adapter features two female 24-pin connectors and one male 24-pin (20+4) connector. This specific configuration allows it to bridge two power supplies to a single motherboard socket. The FSP power supply uses standard connectors for power delivery. It includes a PCIe 6+2 pin connector for video cards. It does not list specific motherboard power connectors in the data. The SilverStone offers a unique dual-PSU connection method. The FSP offers standard single-PSU connectivity. Your choice depends on whether you are linking supplies or powering a single unit.
Reliability Features
Build quality features protect your hardware. The FSP power supply includes a resettable power shut down feature. It undergoes 100% Hi-pot testing and burn-in at high ambient temperatures. It boasts an MTBF of 100K hours at 25 degrees Celsius. These features ensure stable operation in server or industrial environments. The SilverStone adapter has no listed reliability metrics. It is a simple mechanical connector. It does not have protection circuits or testing data. The FSP provides extensive engineering safeguards. The SilverStone relies on the quality of the power supplies it connects. The FSP offers more built-in protection for your system.
Which PSU fits your build
Crypto mining rig builder
You need to power multiple units from one motherboard. This SilverStone adapter connects two PSUs via dual 24-pin female and single male connectors. Its 500+150mm cable length helps manage spacing in crowded mining chassis. It is designed specifically for this dual-PSU startup requirement.
Mini ITX system builder
You require a compact, high-efficiency power source for a small form factor build. This FSP unit is 400W and 80 Plus Gold certified for over 90% efficiency. It fits Mini ITX cases with dimensions of 1.6 by 3.25 by 5.9 inches. The 4cm fan ensures low noise.
Industrial or NAS integrator
You need reliable power for networking or industrial systems. This FSP supply is tested for high ambient temperatures and includes resettable power shutdown features. It offers a PCIe 6+2 pin connector for VGA cards. Its 100K hour MTBF rating suggests long-term stability for continuous operation.
The products compared
SilverStone Dual 24-Pin Power Supply Adapter Cable
Best for: Dual PSU cryptocurrency mining setups
- Dimensions
- 25.6 × 2.5 × 0.5 inches
View on Amazon: SilverStone Dual 24-Pin Power Supply Adapter Cable Affiliate link
This Silverstone adapter lets you connect two power supply units to a single motherboard. It features dual 24-pin female connectors and one 24-pin male connector. The total cable length reaches 500 plus 150 mm. Its compact dimensions are 2.5 by 0.5 inches. This tool is ideal for cryptocurrency mining rigs where you need to power components from multiple sources.
Pros
- Enables connecting two PSUs to one motherboard
- Dual 24-pin female connectors for extra power
- Single 24-pin male connector for main power
- Total cable length of 500 plus 150 mm
Cons
- Only works with 24-pin connectors
- Not a standalone power supply unit
- Limited to mining or specific dual-PSU setups
Good fit if
- You are building a cryptocurrency mining rig
- You need to power a motherboard from two PSUs
- You require extra 24-pin power connections
Skip if
- You need a complete power supply unit
- You are building a standard desktop PC
- You require 8-pin CPU power connectors
Verdict: Silverstone Dual PSU Adapter PP10 is a specialized tool for miners who need to split power from two units. It fits users who specifically need dual 24-pin connections for their motherboard.
FSP 400W Gold Flex ATX Mini ITX Power Supply
Best for: compact Mini ITX builds with single GPU
- Wattage
- 400W
- Efficiency Rating
- 80 Plus Gold
- PCIe Connector Type
- 6+2 pin
- Fan Size
- 4 cm
- Form Factor
- Mini ITX
- Dimensions
- 5.9 × 1.6 × 3.25 inches
View on Amazon: FSP 400W Gold Flex ATX Mini ITX Power Supply Affiliate link
The FSP400-60FGGBA is a 400W Mini ITX power supply certified 80 Plus Gold. It delivers high efficiency with ratings above 90%. The unit includes a 4 cm fan for quiet operation and features a 6+2 pin PCIe connector for graphics cards. Its compact dimensions of 1.6 by 3.25 by 5.9 inches make it suitable for small form factor builds.
Pros
- 80 Plus Gold efficiency exceeds 90%
- Compact 400W Mini ITX form factor
- Includes one 6+2 pin PCIe connector
- 4 cm fan ensures low noise levels
Cons
- Small 4 cm fan may limit airflow in tight cases
- Single PCIe connector restricts high-power GPU upgrades
- Weight is 2 pounds, which is heavier for its size
Good fit if
- You are building a Mini ITX system
- You need high efficiency for a small case
- You require a reliable 400W power output
Skip if
- You need more than one PCIe connector
- You are building a standard ATX tower
- You require a larger 120 mm fan for airflow
Verdict: FSP 400W Gold Mini ITX PSU fits users who need a compact, efficient power source for small builds. It supports single GPU systems but lacks the connectors for multi-GPU setups.
Specifications side by side
| Spec | SilverStone Dual 24-Pin Power Supply Adapter Cable | FSP 400W Gold Flex ATX Mini ITX Power Supply |
|---|---|---|
| Wattage | not stated | 400W |
| Efficiency Rating | not stated | 80 Plus Gold |
| PCIe Connector Type | not stated | 6+2 pin |
| Fan Size | not stated | 4 cm |
| Form Factor | not stated | Mini ITX |
| Dimensions | 25.6 × 2.5 × 0.5 inches | 5.9 × 1.6 × 3.25 inches |
| Weight | not stated | 2 pounds |
| Model | SST-PP10 | FSP400-60FGGBA |
| Size | not stated | 400W_Gold |
Frequently asked questions
Can I use the SilverStone adapter with any power supply?
The SilverStone SST-PP10 is designed to link two power supply units for mining setups. It connects via dual 24-pin female and single male connectors. You need two separate PSUs to make this work. It does not replace a standard power supply for a single system.
Is the FSP 400W suitable for a gaming PC?
This FSP unit targets compact Mini ITX builds with a single GPU. It offers 80 Plus Gold efficiency for better power usage. It lacks the connectors needed for multi-GPU setups. You should use it only if your system has strict space and power requirements.
What is the main difference between these two products?
The SilverStone item is an adapter cable for splitting power from two units. The FSP item is a complete 400W power supply. One helps miners connect multiple sources. The other provides power for small, efficient single-GPU systems. They serve completely different roles in a build.
Does the FPS power supply support multiple graphics cards?
No, the FSP 400W Gold Mini ITX PSU lacks connectors for multi-GPU setups. It is designed for single GPU systems. You should check your motherboard and GPU power needs before buying. It is best for compact builds with modest power requirements.
How long is the SilverStone adapter cable?
The SilverStone SST-PP10 has a cable length of 500+150mm. This total length helps manage spacing in crowded mining chassis. The physical unit itself is 25.6 inches long. The extra length allows flexibility when connecting two power supplies to one motherboard.
Is the FSP unit efficient for small builds?
Yes, it carries an 80 Plus Gold efficiency rating. This means it converts power with less waste. The compact Mini ITX form factor fits small cases. It weighs 2 pounds, making it light for portable or tight setups. It is a solid choice for efficiency-focused mini PCs.
Can I use the SilverStone adapter for a standard desktop?
No, this adapter is for cryptocurrency mining setups. It splits power from two units for a single motherboard. Standard desktops use one power supply connected to one 24-pin connector. This tool is specialized and unnecessary for typical single-PSU configurations.