Lian Li’s First Energy Provide

Lian Li's First Power Supply

On this planet of PC lovers, Lian Li is a reputation synonymous with top-quality aluminum circumstances. The corporate launched their first PC circumstances again within the 90’s, when PCs nonetheless had been a uncommon discover in dwelling rooms. Their minimalistic designs and all-aluminum constructs had been a jewel on the time of crude metal circumstances with beige plastic faceplates. Lian Li as we speak is likely one of the most respected case designers and producers on the planet.


For many years, Lian Li stood nearly utterly focuses on the design and manufacturing of top-tier PC circumstances. It was not till final yr that the corporate took a major step in the direction of diversification with the introduction of all-in-one liquid cooling options. Apparently, the corporate discovered their first try profitable and they’re taking yet one more step this yr, with the introduction of an influence provide.

In as we speak’s evaluation, we’re taking a look on the SP750, Lian Li’s first-ever PSU, rated at 750 W with an 80 Plus Gold certification. Lian Li actually takes a peculiar diversification method right here, as their first PSU just isn’t a regular-sized energy provide, however an SFX unit, and one with a really high-power output in addition. It is a PSU for compact high-power gaming techniques, fairly presumably designed to match Lian Li’s personal small case designs.

Lian Li SP750 SFX Gold, Absolutely Modular
Energy specs ( Rated @ 40 °C )
AC INPUT 100 – 240 VAC, 50 – 60 Hz
RAIL +3.3V +5V +12V +5Vsb -12V
MAX OUTPUT 20A 20A 62A 2.5A 0.3A
100W 750W 12.5W 3.6W

Packaging and Bundle

We acquired the Lian Li SP750 in a cardboard field that’s typical for shopper energy provides. There may be nothing particular in regards to the field nevertheless it does present sufficient safety to the unit for transport. The aesthetic design additionally is comparatively easy, with coloured edges and based mostly on an image of the unit itself. It’s obvious that Lian Li positioned simply as a lot effort because it was wanted to create a correct trendy packaging and not more than that.

Contained in the field, we discovered a minimalistic bundle, even so far as a PSU is worried. Except for a gratitude card, and a quite simple consumer’s guide, Lian Li solely included the 4 black mounting screws. There are not any cable ties or another equipment accompanying this unit.

The Lian Li SP750 is a completely modular PSU and each cable will be indifferent, together with the 24-pin ATX cable. All the connectors and wires are black. The 24-pin ATX, the EPS, and the PCI Specific cables are all individually sleeved as properly, however the SATA and Molex connector cables will not be. It’s apparent that the cables are fairly a bit shorter than common ATX PSU cables, which is affordable for an SFX energy provide. It is a real looking alternative contemplating that the PSU could also be put in in very confined areas the place each millimeter counts however might turn out to be a difficulty for customers wanting to make use of the PSU with a daily ATX case. What’s unusual right here is the presence of three PCI Specific connectors, as a result of the SP750 clearly has the facility output for 2 middle-range graphics playing cards however the lack of a fourth connector deprives customers from that alternative. The cables are equipped in a easy however efficient storage pouch.

Lian Li SP750
Connector kind Hardwired Modular
ATX 24 Pin 1
EPS 4+4 Pin 1
EPS 8 Pin 1
PCI-E 6+2 Pin 3
PCI-E 8 Pin
Molex 4


The Lian Li SP750 750W SFX PSU

Exterior Look

Maybe the best characteristic of the Lian Li SP750 is its dimension – the corporate managed to get that top an influence output out of a normal 125 × 63.5 × 100 mm / 4.92 × 2.5 × 3.94 in (W×H×D) SFX kind issue design, making the PSU appropriate with just about each SFX case available in the market. SFX circumstances designed to suit top-tier graphics playing cards normally can accommodate an SFX-L PSU as properly, but making certain compatibility with any SFX-compliant case no matter its goal market undoubtedly is an efficient factor.


Lian Li spent loads of time worrying in regards to the aesthetics of their first PSU. Components of the chassis are brushed aluminum, with stickers protecting many of the unit’s sides. A fantastically made label with the corporate brand will be seen proper subsequent to the cooling fan. The designer went so far as selecting screws with polished heads.

Regardless of the compact dimensions of the unit, the designer managed to put a small on/off change subsequent to the AC cable on the rear aspect of the PSU. The entrance aspect is densely populated with the connectors for the modular cables. The connectors will not be color-coded however there’s a fundamental legend printed on the chassis indicating what every connector is for. Moreover, it’s virtually not possible for a consumer to insert a cable into the mistaken connector, as every cable kind has a unique connector and the connectors are keyed.

Inner Design

The fan accountable for the cooling wants of the SP750 is a low-profile 92 mm product made by Yate Loon, an organization whose merchandise we regularly see in PC energy provides. There may be nothing too particular about this fan, because it has a easy double-bearing engine and a really excessive theoretical most velocity of 3000 RPM. Double bearing followers are uncommon in high-quality PSUs due to their excessive noise output however they’re extraordinarily dependable.

The OEM behind the creation of the Lian Li SP750 is Helly Know-how, an organization we not often encounter. The inside of the SP750 is densely packed, which was to be anticipated for an SFX design with that a lot energy output. The filtering stage begins on the again of the AC receptacle, consisting of two Y capacitors, two X capacitors, and two filtering inductors in complete. It’s a easy filtering stage, which must be simply as environment friendly as mandatory.


There is just one bridge rectifier, by itself heatsink – if anybody can name that tiny piece of steel a heatsink. The heatsink is however a small flat piece of steel, smaller than the chip itself. Area is a matter in such a design and a bigger heatsink would impede the set up of the change however we now have the sensation that the designer might do some higher right here.

The APFC circuit is textbook, with the lively parts on the big heatsink throughout the sting of the PCB, one filtering coil, and a single capacitor. The massive 400V/470μF capacitor is made by Nippon Chemi-Con, as all electrolytics within the unit are. There are two major aspect inversion MOSFETs that kind the guts of an LLC resonant half-bridge design.

On the secondary aspect, we will see the unit’s comparatively big fundamental transformer surrounded by a skinny metallic plate that acts as a heatsink for the 12V producing MOSFETs. As with all trendy PSU designs, the three.3V and 5V strains are derived by way of DC-to-DC conversion circuits. Many of the capacitors are polymer and are made by Beryl or, for these within the full identify of the corporate, Zhao Qing Beryl Digital Know-how Ltd. Though that is the primary time we now have seen their merchandise in a business PSU, Beryl is a good producer, with a major R&D division and world analysis collaborations on the development of, primarily polymer, capacitors.

Learn on for our testing of this energy provide.

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