Lian Li SP750
~£109.99typical UK price when we researched itAffiliate link. As an Amazon Associate I earn from qualifying purchases. Details
Lian Li SP750 review
Researched, not hands-on tested.How we review ›
by SudoPicks Research · editor Paul HR · published 25 Oct 2026 · updated 25 Oct 2026
The Lian Li SP750 is a 750 W SFX power supply for compact builds that need a fully modular unit with an 80 PLUS Gold rating. It suits builders who want quiet running and flexible braided cables in a small case.
15th of 16 power supplies we've reviewedAffiliate link. As an Amazon Associate I earn from qualifying purchases. Details
New to power supplies? What they are and what to look for
The power supply (PSU) turns mains electricity into the power every part of a desktop PC runs on. A good one is quiet, efficient and protects the rest of the PC if something goes wrong.
Do you need a power supply? Every desktop build needs one. Pre-built PCs already have one, but upgrading to a bigger graphics card can mean a bigger power supply.
What to look for
- Enough watts for your graphics card and processor, with some to spare: our PC build planner works it out
- 80 Plus Gold or better for lower running costs
- A long warranty: 7 to 10 years signals a well-made unit
Unsure about a word? Jargon explained
How the 5.9 adds up
Our power supplies rubric- Quality and protections30% of score
- Efficiency20% of score
- Noise15% of score
- Cabling and connectors20% of score
- Warranty15% of score
Against the 16 power supplies we've reviewed
bar = the range of all 16 · dot = this one · better →
- Overall score 5.9/1015th of 16
- Price £109.998th cheapest
- Value for money Poorer value than most12th best of 15
Support and features
| Software updates | No end date announced for updates. source |
|---|
Compatibility
| Linux | Not confirmed. No Linux-specific information found; the product is a PSU with no software or data interface mentioned in the pages retrieved. source |
|---|
Pros and cons
+ pros
- Fully modular with braided cables
- 80 PLUS Gold; 90.23% efficiency measured at 808 W
- Several owners praise quiet operation
− cons
- No 12V-2x6 or 12VHPWR cable listed
- Some owners report fan spinning up at idle
- Only two SATA connectors listed
Price history
Price history appears here once we have tracked this product for a few days.
The full review
Where it fits
The SP750 is a 750 W SFX power supply for small-form-factor builds. It measures 100 x 63.5 x 125 mm (D x W x H) and is fully modular. Lian Li released it in June 2021.
Maximum DC output is 750 W. Of that, +12V can deliver 744 W, and +3.3V and +5V share 100 W. With nearly all of the output on the +12V rail, the unit puts its capacity where a CPU and graphics card draw their power.
Efficiency7/10
The SP750 carries an 80 PLUS Gold rating. Guru3d measured 90.23% efficiency at 808 W. That figure gives a concrete reading of how it converts power at high load.
Noise and the fan6/10
Cooling comes from one 92 mm hydraulic-bearing fan. Lian Li specifies a zero-RPM mode until 40% load. Guru3d found the fan does not spin until about 300 W, which is in line with that figure. Maximum noise is 31.8 dB(A).
Owner feedback is mixed. Several owners praise the quiet operation. Others report the fan spinning up unexpectedly during light use or at idle, which runs against the zero-RPM behaviour in the specification. One owner reports the fan began scraping after a period of use. That is a single report, but it is a fault worth knowing about with a hydraulic-bearing fan that is meant to stay quiet.
For a silent build, the zero-RPM claim is the main attraction. The idle spin-up reports mean it may not stay silent for every buyer.
Cabling and connectors5/10
The SP750 is fully modular, so you only fit the cables you need. That helps airflow and tidiness in a compact case.
The manufacturer lists three PCIe 8-pin (6+2) outputs, one CPU connector, two SATA connectors and one peripheral connector. No 12V-2x6 or 12VHPWR cable is listed. A buyer who wants a native cable for a new NVIDIA card will not find one in the listed set. The two SATA connectors limit builds with several SATA drives.
Owners call the braided cables attractive and flexible. They also report the cables feel stiff in a very small case, so check clearance if your chassis is tight.
Quality and protections6/10
Ocinside found the 12 V and 5 V rails stayed within nominal limits under a combined CPU and GPU load just under 250 W. That is a modest share of the 750 W rating.
Guru3d's 808 W efficiency reading shows the unit was also tested at a much higher load. Between the two reviews, the voltage and efficiency results are reassuring at the loads they cover.
Warranty5/10
Lian Li gives the SP750 a 5-year warranty. Given the single owner report of a scraping fan, that cover has some practical value on a unit whose fan is central to its appeal.
Who it suits
The SP750 suits an SFX build with a CPU and a GPU that uses PCIe 8-pin power. The Gold rating, fully modular design and zero-RPM mode fit a quiet small-form-factor system. Owner praise for quiet running and flexible cables supports that.
It suits a buyer with a newer card that needs a 12V-2x6 connector less well, since none is listed. It is also a poorer match for a storage-heavy build with many SATA drives, and for anyone who needs the fan to stay still at idle.
What owners report
Recurring themes from public owner feedback, summarised in our own words.
- Several owners praise how quiet the unit runs.
- Braided cables are called attractive and flexible, though stiff in very small cases.
- Some owners say the fan spins up unexpectedly at idle or during light use.
- One owner reports the fan began scraping after a period of use.
Who should skip it
- Buyers with a new NVIDIA card who want a native 12V-2x6 cable
- Builders with many SATA drives who need more than two connectors
- Anyone who needs a fan that stays fully silent at idle
Full specifications
| Rated output (W) | 750 W maximum DC output; +12V 744 W; +3.3V/+5V 100 W combined |
|---|---|
| Efficiency rating (80 Plus or Cybenetics) | 80 PLUS Gold |
| Form factor (ATX or SFX) and ATX 3.x / PCIe 5.x support | SFX, 100 x 63.5 x 125 mm (D x W x H) |
| Modular cabling (fully, semi or non-modular) | Fully modular |
| Graphics card connectors (12V-2x6 / 12VHPWR and PCIe 8-pin count) | Three PCIe 8-pin (6+2) outputs; one CPU, two SATA and one peripheral connector listed by manufacturer; no 12V-2x6 or 12VHPWR cable listed |
| Fan size and zero-fan mode | One 92 mm hydraulic-bearing fan; zero-RPM mode until 40% load |
| Warranty (years) | 5 years |