Lian Li SP Platinum 850W SFX Form Factor Power Supply with 12V-2x6 Connectors - ATX 3.1 & PCIE 5.1 Compliant - Low-Noise - Fully Modular - 105°C Capacitors - 10 Year Warranty - Black (SP0850P.B)
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AI Verdict
This 850-watt, 80 Plus Platinum SFX power supply with ATX 3.1 and PCIe 5.1 support is for compact gaming PCs needing a 12V-2x6 connector.
This PSU is a strong fit for anyone building a compact, high-performance PC, especially with modern GPUs. Its SFX form factor (125mm x 63.5mm x 100mm) and ATX 3.1/PCIe 5.1 compliance with a 12V-2x6 connector directly address the needs of current SFF and gaming systems. The included SFX-to-ATX bracket also makes it adaptable for standard cases.
If you're running an extremely power-hungry setup like an RTX 4090 with an overclocked CPU, consider the 1000W version for more headroom and a higher fanless threshold.
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Pros
- Meets ATX 3.1 and PCIe 5.1 standards with a reinforced 12V-2x6 600W cable for current-gen GPUs.
- Operates silently with fanless mode active at loads below 40%, engaging its 92mm FDB fan only when needed.
- Achieves up to 92% efficiency at 50% load, earning its 80 Plus Platinum certification.
- Built with 100% Japanese Rubycon 105°C capacitors for stable performance and extended durability.
- Includes an SFX-to-ATX bracket for installation flexibility across various case sizes.
- Features super flexible, textured plastic modular cables that simplify routing and improve build aesthetics.
Cons
- The 12V-2x6 cable's white color is noted to be slightly more green than other white cables, affecting color consistency in some builds.
- Cable combs for the 600W 12V-2x6 cable can be tricky to install due to the extra sense pins.
- While generally quiet, the 92mm fan can reach up to 40 dBA at maximum RPM, which might be audible in extremely silent builds.
Dimension Scores
The 80 Plus Platinum certification ensures up to 92% efficiency at 50% load, providing stable 850 watts of power with ATX 3.1 and PCIe 5.1 compliance.
The fanless mode up to 40% load and a 92mm FDB smart fan with a maximum of 40 dBA for the 850W model indicate a focus on low-noise operation.
Utilizing 100% Japanese Rubycon 105°C capacitors and offering a 10-year warranty points to high-quality components and manufacturing.
The fully modular design with super flexible, textured plastic cables and an included pigtail power switch significantly aids in clean and efficient cable routing.
Best For
- Small Form Factor (SFF) PC builds requiring high wattage for powerful components.
- Gaming PCs utilizing NVIDIA 40-series GPUs or other cards with 12V-2x6 power connectors.
- Users prioritizing energy efficiency and stable power delivery in a compact footprint.
- Builders who need flexible installation options, including both SFX and ATX cases.
Not Recommended For
- Budget-focused builds where an 80 Plus Platinum certification and ATX 3.1 compliance are not critical.
- Users who prefer a completely silent system under all load conditions, as the fan activates above 40% load.
Watch Out For
- The 12V-2x6 cable has a blue-colored portion to indicate proper seating, but some users might find the visual cue distracting if not fully inserted.
- Cable management with the 12V-2x6 cable can be slightly challenging due to its specific design and the difficulty with cable combs.
- Some older Lian Li SP series PSUs (Gold rated) were reported to have a 'high buzzing sound underload,' though the Platinum version aims for lower noise levels.
Full Specifications
| ASIN | B0FN7JS7LZ |
| Brand | Lian Li |
| Wattage | 850 watts |
| Fan Count | 1 |
| Form Factor | SFX |
| Item Weight | 4.75 pounds |
| Manufacturer | LIAN LI |
| Connector Type | ATX |
| Cooling Method | Air |
| Output Wattage | 850 Watts |
| Item model number | SP0850P.B |
| Compatible Devices | Desktop Computer, Gaming PC |
| Product Dimensions | 4.92 x 2.5 x 3.94 inches |
| Maximum Input Voltage | 264 Volts (AC) |
| Item dimensions L x W x H | 4.92 x 2.5 x 3.94 inches |
What Buyers Say
This PSU is a new release, so specific long-term user complaints are hard to find, but initial impressions highlight its value and modern features. Users are pointing out the inclusion of the 12V-2x6 connector and ATX 3.1 compliance as key selling points for next-gen builds. The flexible cables and the included SFX-to-ATX bracket also get mentions for making installation easier. The fanless mode for quiet operation is a recurring positive.
“Finally, a compact PSU that actually has the right cable for my RTX 4080 Super without needing some janky adapter! My SFF build is so clean now, and it's barely audible unless I'm really pushing it.”
Common Praise
- Includes the necessary 12V-2x6 600W cable for new graphics cards.
- Runs silently under low loads due to its fanless mode.
- Cables are notably flexible and easy to work with during installation.
- The SFX-to-ATX bracket makes it compatible with more cases.
- The included pigtail power switch is a thoughtful addition for SFF builds.
Common Complaints
- The white on the 12V-2x6 cable doesn't perfectly match other white cables, appearing slightly green.
- Attaching cable combs to the 12V-2x6 cable can be a bit fiddly.
- Some users of previous Lian Li SP models reported coil whine or fan noise under load, though this Platinum version aims to address noise.
Ownership Tips
- The flexible cables retain their shape well even after being bent for routing, preventing them from springing back into place.
- The fan remains off for most light to moderate tasks, only spinning up noticeably during intense gaming sessions or benchmarks.
- The 12V-2x6 connector feels secure once fully seated, and the blue indicator is a helpful visual confirmation.
- The compact size frees up a surprising amount of space in smaller cases, improving overall airflow.
- No noticeable coil whine has developed even after several weeks of varied use.
Frequently Asked Questions
Does this PSU come with the new 12V-2x6 cable for RTX 40-series GPUs?
Yes, it includes a reinforced 12V-2x6 600W cable that is ATX 3.1 and PCIe 5.1 compliant.
Is this power supply quiet during operation?
It features a smart cooling design with a fanless mode up to 40% load for silent operation. Above that, its 92mm FDB fan engages, with a maximum noise level of 40 dBA for the 850W model.
Can I use this SFX PSU in a standard ATX case?
Yes, an SFX-to-ATX bracket is included in the box, allowing for seamless installation in both compact SFX and standard ATX cases.
What kind of capacitors does this PSU use?
It is built with 100% Japanese Rubycon 105°C-rated capacitors, which contribute to its durability and stable performance.
Are the cables flexible for easy routing?
Yes, the PSU comes with super flexible, textured plastic modular DC cables designed to simplify cable routing and improve airflow in your build.
Buying Guide
When you're looking at a power supply, especially for a compact PC, you need to think about more than just wattage. The form factor (SFX here) dictates if it'll even fit in your case. Efficiency (80 Plus Platinum) means less wasted heat and lower electricity bills. And with new graphics cards, having the right connectors like the 12V-2x6 is crucial so you don't end up with a mess of adapters or compatibility issues.
SFX Form Factor
This means the power supply is physically smaller (125mm x 63.5mm x 100mm) than standard ATX PSUs, which is essential for fitting into compact Small Form Factor (SFF) PC cases. Think of it like trying to fit a mini-fridge into a tiny apartment kitchen – size matters a lot.
ATX 3.1 & PCIe 5.1 Compliant with 12V-2x6 Connector
This is the latest standard for power supplies, specifically designed to handle the power demands and transient spikes of modern, high-performance graphics cards. The 12V-2x6 connector is the dedicated cable for these new GPUs, ensuring stable power delivery without needing adapters. It's like having the right plug for a new appliance, instead of relying on an old, potentially unreliable adapter.
80 Plus Platinum Certified
This certification indicates how efficiently the power supply converts AC power from your wall into DC power for your PC components. Platinum means it's very efficient (up to 92%), wasting less energy as heat, which keeps your system cooler, quieter, and saves a bit on your electricity bill. It's like getting better gas mileage in your car.
Alternatives
If this doesn't fit your needs, look for an SFX-L power supply if you need slightly more space for a larger fan and don't mind a slightly longer unit, or an ATX 3.1 compliant PSU with a 12V-2x6 connector in a higher wattage if you have an ATX case and an extremely power-hungry system.
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