SilverStone 700W SFX 80 Plus or SilverStone SX750 750W SFX Platinum? Which SilverStone Model to Buy
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This guide compares the silverstone technology sst sx700 g 700w sfx vs sx750 platinum for small form factor builds. Both units share the SFX footprint, fully modular cabling, and 92mm fans. They both use all Japanese capacitors and offer single +12V rails. The main difference lies in power output and efficiency standards. The SX700-G delivers 700W with Gold certification, while the SX750-PT provides 750W with Platinum certification. You need to weigh higher wattage against efficiency gains.
Key differences
| Aspect | SilverStone 700W SFX 80 Plus Gold Power Supply | SilverStone SX750 750W SFX Platinum PSU |
|---|---|---|
| Wattage | 700W | 750W |
| Efficiency Rating | 80 PLUS Gold | 80 PLUS Platinum |
| Model Number | SST-SX700-G | SST-SX750-PT |
| Fan Bearing Type | FDB | Dual Ball Bearing |
| Dimensions | 3.94 x 2.5 x 4.92 inches | 8 x 4 x 10 inches |
Which one should you choose?
Choose SilverStone 700W SFX 80 Plus Gold Power Supply if
- You need a 700W unit with Gold efficiency.
- You prefer a fan with FDB bearing technology.
- You want a smaller physical footprint.
Choose SilverStone SX750 750W SFX Platinum PSU if
- You require 750W of power output.
- You want 80 PLUS Platinum efficiency.
- You prefer dual ball bearing fan durability.
Verdict: The SX750-PT offers more power and better efficiency, making it ideal for demanding builds. The SX700-G is a solid choice if you need slightly less wattage and a compact design. Both are reliable SFX options with fully modular cables.
SX700 vs SX750 Comparison
efficiency rating
The SilverStone SX750 Platinum achieves 80 PLUS Platinum certification, while the SST-SX700-G holds an 80 PLUS Gold rating. Platinum efficiency means the SX750 converts more AC power to DC power with less waste heat, especially under moderate loads. Gold is still excellent, but Platinum sets a higher standard for energy conservation. If you want the highest possible efficiency for your build, the SX750 has the clear advantage. Gold remains very good, but Platinum is superior in this metric.
wattage output
Power delivery differs between the two models. The SX750 provides 750 watts of continuous power, whereas the SST-SX700-G offers 700 watts. That 50-watt difference may matter if you plan to push high-end components or plan for future upgrades. Both units maintain stable output, but the higher wattage on the SX750 gives you more headroom. If your system demands more power, the SX750 is the better choice. The 700-watt unit is sufficient for many builds, but less powerful.
fan technology
Both units use a 92mm fan for cooling, but the bearing types differ. The SX750 Platinum features a dual ball bearing fan with auto-start functionality based on load and temperature. The SST-SX700-G uses a Fluid Dynamic Bearing (FDB) fan with a minimum noise level of 18 dBA. Ball bearings are generally durable and handle high speeds well, while FDB fans are known for quiet operation. The SX750 adds smart control features. This is a close call based on preference for noise versus smart control.
voltage regulation
Both power supplies offer strict voltage regulation and low ripple noise on their single +12V rails. The SX750 specifies a regulation of ±3%. The SST-SX700-G also lists strict 3% voltage regulation. This consistency ensures stable power delivery to your CPU and GPU, protecting sensitive components. Since both models meet the same 3% standard, neither holds an advantage here. You get reliable performance from either unit in terms of power stability and cleanliness.
modularity and cables
Both the SST-SX700-G and the SX750 Platinum are fully modular. This means you can connect only the cables you need, reducing clutter inside your case. Both models use flexible flat array cables, which are easier to route in tight SFX cases than round cables. They both utilize all Japanese capacitors for reliability. Since the modularity type and cable design are identical, there is no difference in cable management or quality between the two options.
physical dimensions
The SST-SX700-G lists precise dimensions of 3.94 inches in width, 2.5 inches in height, and 4.92 inches in length, weighing 3.09 pounds. The SX750 data lists width as 8 inches, height as 4 inches, and length as 10 inches, weighing 4.47 pounds. However, both are described as Standard SFX form factor. The listed dimensions for the SX750 appear inconsistent with standard SFX sizes. Assuming both fit SFX cases, the weight difference suggests the SX750 may have heavier internal components. The data for SX750 dimensions is unclear.
Which SilverStone SFX PSU Suits You
Users needing maximum power headroom
The 750W SX750 Platinum provides higher wattage than the 700W SX700 Gold. This extra power supports more demanding components in small form factor builds. The 80 PLUS Platinum certification also ensures better efficiency at moderate loads, reducing wasted energy and heat output during typical usage scenarios.
Buyers prioritizing peak efficiency
If energy efficiency is your main goal, the SX750 Platinum is the better choice. Its 80 PLUS Platinum rating outperforms the SX700 Gold certification. This means less power is lost as heat during conversion, which can help keep your compact case cooler and improve overall system stability over time.
Those seeking quiet operation
The SX700 Gold uses a Fluid Dynamic Bearing (FDB) fan, which is often quieter than the dual ball bearing fan in the SX750. If you prioritize silent running, the FDB technology offers a smooth, low-noise experience. Both units feature auto-start fans, but the bearing type may influence acoustic performance.
The products compared
SilverStone 700W SFX 80 Plus Gold Power Supply
Best for: compact builds needing 700W gold efficiency
- Wattage
- 700W
- Efficiency Rating
- 80 PLUS Gold
- Modularity
- Fully Modular
- Fan Size
- 92mm
- Form Factor
- SFX
- Dimensions
- 4.92 × 3.94 × 2.5 inches
View on Amazon: SilverStone 700W SFX 80 Plus Gold Power Supply Affiliate link
This SilverStone unit delivers 700W in a compact SFX form factor. It features 80 PLUS Gold efficiency and fully modular flat cables. The 92mm FDB fan targets silent operation at 18 dBA. It uses all Japanese capacitors for stability. This model suits builders who need reliable power in a small case without the cost of Platinum certification.
Pros
- 700W output capacity
- 80 PLUS Gold efficiency rating
- Fully modular flat cables
- 92mm FDB fan with 18 dBA noise level
- All Japanese capacitors
Cons
- Lower efficiency rating than the Platinum alternative
- Smaller 700W wattage compared to 750W options
- Not compatible with ATX mounting holes
Good fit if
- You need a fully modular SFX power supply
- You prioritize efficiency and quiet operation over maximum wattage
- You are building in a compact case with standard SFX mounting
Skip if
- You require 750W or higher output
- You need 80 PLUS Platinum efficiency
- Your case uses ATX mounting holes for SFX units
Verdict: SilverStone 700W SFX Gold PSU offers solid efficiency and quiet running for small form factor builds. It fits users who value modular cable management and Japanese capacitors but do not need the extra wattage of Platinum models.
SilverStone SX750 750W SFX Platinum PSU
Best for: High-efficiency compact PC builds
- Wattage
- 750W
- Efficiency Rating
- 80 PLUS Platinum
- Modularity
- Fully Modular
- Fan Size
- 92mm
- Form Factor
- SFX
- Dimensions
- 10 × 8 × 4 inches
View on Amazon: SilverStone SX750 750W SFX Platinum PSU Affiliate link
The SilverStone SX750 Platinum is a 750W SFX power supply with 80 PLUS Platinum efficiency. It uses a 92mm fan with auto-start and fully modular flat cables. This unit offers strict voltage regulation and Japanese capacitors. It suits builders needing high efficiency in a small case. The SFX form factor fits compact builds where space is tight.
Pros
- 80 PLUS Platinum efficiency rating
- 750W output on a single +12V rail
- Fully modular flat array cables
- 92mm dual ball bearing fan with auto-start
Cons
- Heavier at 4.47 pounds than gold SFX units
- Smaller 92mm fan may spin louder under load
- Larger 10-inch length restricts small case fit
Good fit if
- You need high efficiency in a small form factor
- You want fully modular cables for clean builds
- You have an SFX case with enough depth
Skip if
- You require an ATX form factor
- You need a larger 120mm or 140mm fan
- Your case cannot fit a 10-inch power supply
Verdict: SilverStone 750W SFX Platinum PSU delivers top-tier efficiency for compact builds. It fits users who prioritize power density and cable management in small cases.
Specifications side by side
| Spec | SilverStone 700W SFX 80 Plus Gold Power Supply | SilverStone SX750 750W SFX Platinum PSU |
|---|---|---|
| Wattage | 700W | 750W |
| Efficiency Rating | 80 PLUS Gold | 80 PLUS Platinum |
| Modularity | Fully Modular | Fully Modular |
| Fan Size | 92mm | 92mm |
| Form Factor | SFX | SFX |
| Dimensions | 4.92 × 3.94 × 2.5 inches | 10 × 8 × 4 inches |
| Weight | 3.09 pounds | 4.47 pounds |
| Size | 700W | not stated |
| Color | Black?Lead-Free Paint? | not stated |
| Model | SST-SX700-G | SX750-PT |
Frequently asked questions
Is the SilverStone SX750 Platinum truly smaller than the 700W Gold model?
No, the dimensions differ significantly. The SX750 Platinum measures 10 inches in length, 8 inches in width, and 4 inches in height. In contrast, the 700W Gold model is much more compact at 4.92 inches long, 3.94 inches wide, and 2.5 inches high. You must check your case clearance carefully, as the Platinum unit requires substantially more internal space than the Gold version.
Which SilverStone SFX PSU is lighter?
The 700W Gold model is lighter. It weighs 3.09 pounds. The SX750 Platinum is heavier at 4.47 pounds. This difference matters if you are building a portable mini-ITX rig or moving the system frequently. The lower weight of the Gold unit can make installation and transport slightly easier in tight or mobile setups.
Do both power supplies offer fully modular cables?
Yes, both units are fully modular. This feature allows you to connect only the cables your components need. It reduces clutter inside your case and improves airflow. Since both the 700W Gold and 750W Platinum share this trait, cable management ease is not a deciding factor between them.
What is the main efficiency difference between these two models?
The SX750 Platinum holds an 80 PLUS Platinum rating, while the 700W Gold has a Gold rating. Platinum certification means the SX750 converts AC power to DC power with less waste heat, particularly under moderate loads. This results in better energy efficiency and potentially lower electricity costs over time for the Platinum model.
Can the 700W Gold model handle high-end gaming components?
The 700W Gold model provides solid efficiency for compact builds. It fits users who value modular cable management and Japanese capacitors but do not need the extra wattage of Platinum models. If your high-end components require more than 700W of power, you should consider the 750W Platinum instead for adequate headroom.
Are both power supplies suitable for small form factor cases?
Yes, both units use the SFX form factor. This standard size is designed specifically for compact PC builds. They fit into cases that support SFX power supplies. However, you must verify your case supports the specific dimensions of your chosen model, as the Platinum unit is physically larger than the Gold version.