Lian Li 750W SFX Gold Power or Lian Li 1000W Platinum ATX 3.1? Which Lian Li Model to Buy
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You are comparing the lian li sp 750 performance sfx vs sx1000p platinum compact atx to decide which power supply fits your build. Both units offer fully modular cabling and silent operation at low loads. The main difference lies in their form factors and efficiency ratings. One uses the compact SFX standard with Gold certification, while the other utilizes the standard ATX size with higher Platinum efficiency and newer ATX 3.1 support. Your choice depends on your case size and power needs.
Key differences
| Aspect | Lian Li 750W SFX Gold Power Supply | Lian Li 1000W Platinum ATX 3.1 Power Supply |
|---|---|---|
| Form Factor | SFX | ATX |
| Efficiency Rating | 80 PLUS Gold | 80 PLUS Platinum |
| ATX Version | not listed | ATX 3.1 |
| Wattage | 750W | 1000W |
Which one should you choose?
Choose Lian Li 750W SFX Gold Power Supply if
- You need a compact power supply for a small form factor case that supports SFX units.
- Your system requires up to 750W of power and you prioritize a smaller footprint over maximum efficiency.
- You want a black color option for your build components.
Choose Lian Li 1000W Platinum ATX 3.1 Power Supply if
- You require higher efficiency and lower heat output with an 80 PLUS Platinum rating.
- You are building with modern GPUs that benefit from the ATX 3.1 standard and native connectors.
- You have a standard ATX case and need up to 1000W of power capacity.
Verdict: Choose the SP 750 if your case size is limited to SFX dimensions. Select the SX1000P if you have a standard ATX case and need higher wattage and efficiency. The SX1000P also offers the latest ATX 3.1 compatibility for newer hardware.
SP 750 vs SX1000P Comparison
form factor
The Lian Li SP 750 uses the SFX form factor, measuring 4.13 by 7 by 9.5 inches. This compact size allows it to fit into smaller cases that support SFX or SFX-L power supplies. The Lian Li SX1000P Platinum uses the standard ATX form factor, measuring 3.39 by 5.51 by 5.91 inches. ATX units are designed for standard mid-tower and full-tower cases. If you are building a small form factor PC, the SP 750 is the only viable option. For standard cases, the SX1000P provides more internal space flexibility. Your case compatibility dictates this choice entirely.
efficiency rating
Efficiency determines how much electrical energy is converted into usable power for your components. The Lian Li SP 750 carries an 80 PLUS Gold certification. This rating ensures high efficiency across typical load ranges. The Lian Li SX1000P Platinum holds an 80 PLUS Platinum certification. Platinum ratings indicate superior efficiency, achieving up to 92% efficiency at 50% load. Higher efficiency reduces heat output and lowers electricity costs over time. The SX1000P delivers better energy performance. This makes it the stronger choice for users prioritizing energy savings and reduced thermal output in their system.
wattage
Wattage defines the maximum power output the unit can provide to your PC components. The Lian Li SP 750 offers 750 watts of continuous power. This capacity is sufficient for most mid-range gaming systems and productivity workstations. The Lian Li SX1000P Platinum provides 1000 watts of power. This higher capacity supports high-end graphics cards and heavy workloads with more headroom. If your system requires significant power for overclocking or multiple GPUs, the SX1000P is necessary. For standard builds, the SP 750 provides ample power. Choose based on your specific component power requirements.
atx version
The ATX version indicates the design standard and connector compatibility for modern hardware. The Lian Li SX1000P Platinum supports ATX 3.1. This version includes native support for PCIe 6+2 connectors, which are essential for powering the latest high-performance graphics cards without adapters. The Lian Li SP 750 data does not list a specific ATX version. It follows the SFX standard. If you are using the latest generation GPUs that require native 12VHPWR connections, the SX1000P offers direct compatibility. The SP 750 may require adapters or lack explicit support for these newer standards.
fan size
The cooling fan size influences airflow dynamics and potential noise levels under load. The Lian Li SX1000P Platinum features a 120 mm fan. Larger fans can move more air at lower speeds, often resulting in quieter operation. The Lian Li SP 750 data does not specify the fan size. SFX units typically use smaller fans due to space constraints. The SX1000P also includes Smart Cooling Technology with fanless mode at 40% load or less. This ensures silent operation during light tasks. The larger fan and advanced cooling tech give the SX1000P an advantage in thermal management.
modularity
Modularity allows you to connect only the cables you need, reducing clutter inside your case. Both the Lian Li SP 750 and the Lian Li SX1000P Platinum are fully modular power supplies. This means every cable can be detached from the unit. Fully modular designs help with cable management and improve airflow. The SP 750 uses braided cables for a clean look. The SX1000P features super flexible braided DC cables for easier routing. Both units offer the same core benefit of customizable cabling. Neither unit has a distinct advantage in modularity type, as both provide full detachability.
Which Lian Li PSU fits your build
Small form factor PC builders
You need the SFX form factor to fit into compact cases. The SP 750 measures 4.13 by 7 by 9.5 inches, fitting tight spaces. It provides 750W of power with 80 PLUS Gold efficiency. Fully modular braided cables help manage space in small builds. This unit is the practical choice for SFX-L compatible chassis.
High performance desktop enthusiasts
You require maximum power and modern standards for a standard ATX case. The SX1000P delivers 1000W and supports ATX 3.1 specifications. It features 80 PLUS Platinum certification for superior efficiency at 50% load. The 120 mm fan ensures quiet operation under heavy loads. This unit handles high-end components with stable voltage regulation.
Users prioritizing efficiency and durability
You want the best efficiency rating and high-temperature capacitors. The SX1000P offers 80 PLUS Platinum certification, achieving up to 92% efficiency. It uses 100% Japanese 105°C-rated capacitors for durability under thermal stress. The flexible braided cables aid cable management. This model ensures cooler operation and long-term stability for demanding systems.
The products compared
Lian Li 750W SFX Gold Power Supply
Best for: Compact SFX builds under 750W
- Wattage
- 750W
- Efficiency Rating
- 80 PLUS GOLD
- Modularity
- Fully modular
- Form Factor
- SFX
- Dimensions
- 9.5 × 4.13 × 7 inches
- Weight
- 2.2 pounds
View on Amazon: Lian Li 750W SFX Gold Power Supply Affiliate link
The Lian Li SP 750 is a 750W SFX power supply with 80 PLUS Gold efficiency. It uses fully modular braided cables and Japanese electrolytic capacitors for durability. The unit supports ZERO RPM mode under 40% load. It measures 4.13 by 7 by 9.5 inches and weighs 2.2 pounds. This compact unit suits small form factor builds needing reliable power.
Pros
- 80 PLUS Gold efficiency rating
- Fully modular braided cables
- ZERO RPM mode under 40% load
- Japanese electrolytic capacitors
Cons
- Lower 750W wattage compared to the 1000W option on the list
- SFX form factor limits compatibility with larger cases
- Black color only available in this variation
Good fit if
- You need a compact SFX power supply for a small case
- You want 80 PLUS Gold efficiency for better power savings
- You prefer silent operation at low loads
Skip if
- You require more than 750W of power
- You are building a standard ATX case that does not need SFX
- You need a 1000W Platinum efficiency unit
Verdict: Lian Li SP 750 SFX Gold PSU is a solid choice for small form factor builds that do not exceed 750W. It offers efficient power delivery and quiet operation for users prioritizing compact size over maximum wattage.
Lian Li 1000W Platinum ATX 3.1 Power Supply
Best for: high-performance ATX builds
- Wattage
- 1000W
- Efficiency Rating
- 80 Plus Platinum, Cybenetics Platinum
- ATX Version
- ATX 3.1
- PCIe Connector Type
- 12V-2x6, PCIe 6+2
- Fan Size
- 120 mm
- PCIe Version
- PCIe 5.1
View on Amazon: Lian Li 1000W Platinum ATX 3.1 Power Supply Affiliate link
The Lian Li SX1000P is a 1000W ATX 3.1 power supply designed for high-end builds. It carries an 80 Plus Platinum efficiency rating, reaching 92% efficiency at 50% load. The unit includes a 120mm fan with fanless mode for silent operation under light loads. You get ample PCIe 6+2 connectors and flexible braided cables. This model suits users needing maximum power density and quiet performance in a standard ATX form factor.
Pros
- 1000W output with ATX 3.1 standard
- 80 Plus Platinum efficiency rating
- 120mm fan with fanless mode at low loads
- Multiple PCIe 6+2 connectors included
- 105°C-rated Japanese capacitors
Cons
- Larger physical dimensions compared to SFX units
- Heavier weight at 6.91 pounds
- Fanless mode disables at loads above 40%
Good fit if
- You need 1000W of power for high-end GPUs
- You prefer silent operation during light tasks
- You have a standard ATX case with ample space
Skip if
- You are building in a small form factor case
- You need SFX or SFX-L dimensions
- You require a lower wattage for budget builds
Verdict: Lian Li SX1000P 1000W ATX 3.1 delivers high efficiency and ample power for demanding systems. It is the right choice if you prioritize quiet operation and have a standard ATX chassis.
Specifications side by side
| Spec | Lian Li 750W SFX Gold Power Supply | Lian Li 1000W Platinum ATX 3.1 Power Supply |
|---|---|---|
| Wattage | 750W | 1000W |
| Efficiency Rating | 80 PLUS GOLD | 80 Plus Platinum, Cybenetics Platinum |
| Modularity | Fully modular | not stated |
| ATX Version | not stated | ATX 3.1 |
| PCIe Connector Type | not stated | 12V-2x6, PCIe 6+2 |
| Fan Size | not stated | 120 mm |
| Form Factor | SFX | ATX |
| PCIe Version | not stated | PCIe 5.1 |
| Connector | not stated | 12V-2x6 Connector |
| Size | 750W(V1),Black | 1000W |
| Dimensions | 9.5 × 4.13 × 7 inches | 5.91 × 3.39 × 5.51 inches |
| Weight | 2.2 pounds | 6.91 pounds |
| Color | Black | White |
| Model | SP750 | SX1000P.W |
Frequently asked questions
Is the Lian Li SP 750 compatible with standard ATX cases?
No, the SP 750 uses the SFX form factor, which is smaller than the standard ATX size. It measures 4.13 by 7 by 9.5 inches. You need a case that specifically supports SFX or SFX-L power supplies. Standard ATX cases will not accept this unit without modification.
Does the Lian Li SX1000P support the latest GPU standards?
Yes, the SX1000P adheres to the ATX 3.1 specification. This version includes support for modern connectors required by new graphics cards. It provides 1000W of power, making it suitable for high-end builds that demand stable and efficient power delivery for demanding components.
Which PSU is lighter, the SP 750 or the SX1000P?
The SP 750 is significantly lighter at 2.2 pounds. The SX1000P weighs 6.91 pounds. The difference comes from their internal components and larger size. If you are building a portable or frequently moved system, the lighter SFX unit is the better choice.
Can I use the SX1000P in a small ITX case?
No, the SX1000P is an ATX unit with dimensions of 3.39 by 5.51 by 5.91 inches. Most small ITX cases require SFX or SFX-L form factors. The SP 750 fits these smaller enclosures. You must check your case compatibility before choosing the larger ATX model.
What is the maximum wattage for the Lian Li SP 750?
The SP 750 delivers 750W of power. This output is sufficient for compact builds that do not require extreme energy consumption. It is designed for users who prioritize a smaller footprint over maximum power capacity. Check your system's total power draw to ensure it stays under this limit.
Does the Lian Li SX1000P come in black?
No, the SX1000P model listed is white. The SP 750 is available in black. If you have a specific color scheme for your build, you must choose accordingly. The white finish on the SX1000P matches well with light-colored cases and components.
Is the SX1000P suitable for high-performance gaming rigs?
Yes, the SX1000P provides 1000W of power and supports ATX 3.1. This makes it ideal for high-performance systems with powerful GPUs and CPUs. It ensures stable power delivery for demanding tasks. The SP 750 may be insufficient for such high-end configurations due to its lower wattage.
How do the dimensions of the two PSUs compare?
The SP 750 measures 4.13 by 7 by 9.5 inches, while the SX1000P is 3.39 by 5.51 by 5.91 inches. The SFX unit is longer and taller but narrower. The ATX unit is more compact in length and height. Your case must accommodate these specific measurements.