Can this power a RTX 4090 with the included cables?

450-500 Watts ballpark on 4090 of course the manufacturer of the card is a factor due to customized bios and power delivery but if you take in your entire PC , processor, accessories 750 could be pushing it close. Personally in my rigs I tend to lean at 200 watts above needed that way my power supply is not pinned at max. Recommend looking up a units "continuous power output" as units can sometimes display max "peak" wattage . Example 500 continuous 750 peak. Manufacturers differ on small details.

Can anyone please answer is the provided 12vhpwr cable compatible with rtx 4080 fe?

It is not, but you can buy corsair compatible cables if you want, pinouts are identical, I was using this with fasgear corsair cable.

Has anyone experienced the issue of the input capacitor overheating or melting?

Suggested contact manufacturer to inquire a defective unit or recall. As a user of the unit I have had no failures or faults in two builds. Caps popping in modern PSUs is usually due to more power being drawn from the unit then it can produce. (Highly unlikely I admit) the fuse should trip first.

Does this have 3 PCI-E power outputs & cables needed for the Asus Strix RTX 3090?

The unit I received didn't work, but it has 4 of said ports, so you should be fine if you want to get it. I think the one they shipped me was damaged in shipment, I ended up returning it and getting something else entirely, non PSU.

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Lian Li SP850 V2 850W SFX Power Supply | 80 Plus Gold | Native 12V-2x6 | ATX 3.1 PCIe 5.0 Ready | Fully Modular | Zero RPM, Black

Lian Li SP850 V2 850W SFX Power Supply | 80 Plus Gold | Native 12V-2x6 | ATX 3.1 PCIe 5.0 Ready | Fully Modular | Zero RPM, Black

Product ID: 533660530

Details

Brand
Lian Li
Compatible devices
Personal
Connector type
SFX
Cooling method
Air
Form factor
SFX
Item dimensions L x W x H
24.1 x 10.2 x

⚡850W peak power

💎80 Plus Gold efficiency

🖥️PCIe 5.0 & native 12V-2x6 cable

$351.53

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Description

⚡ Power meets precision — build smarter, game louder!

COMPACT YET MIGHTY - SFX form factor (125x100x63.5mm) fits perfectly in sleek, space-conscious builds without sacrificing power.
WHISPER QUIET COOLING - 92mm fluid dynamic bearing fan with zero RPM mode keeps noise near silent until heavy loads kick in.
GOLD STANDARD EFFICIENCY - 80 Plus Gold certified with up to 91.89% efficiency reduces wasted energy and keeps your rig cool.
POWER YOUR NEXT GEN BUILD - 850W of reliable, clean power to fuel high-performance GPUs and CPUs without compromise.
TAILORED CABLE MANAGEMENT - Fully modular design with premium Japanese capacitors ensures long-term stability and a clutter-free setup.

The Lian Li SP850 V2 is a fully modular 850W SFX power supply designed for compact, high-performance PC builds. Certified 80 Plus Gold for up to 91.89% efficiency, it features a native 12V-2x6 cable optimized for NVIDIA 50-series GPUs and PCIe 5.0 readiness. Its compact dimensions and whisper-quiet 92mm fluid dynamic fan with zero RPM mode make it ideal for silent, space-saving setups. Built with premium Japanese capacitors, it guarantees long-term reliability and clean power delivery.

Specifications

ASIN	B0BCV9JCCH
Best Sellers Rank	21,454 in Computers & Accessories ( See Top 100 in Computers & Accessories ) 153 in Power Supplies
Brand	Lian Li
Brand Name	Lian Li
Compatible Devices	Personal Computer
Compatible devices	Personal Computer
Connector Quantity	4
Connector Types	SFX
Connector type	SFX
Cooling Method	Air
Country of Origin	China
Customer Reviews	4.1 out of 5 stars 57 Reviews
Fan Size	120 Millimetres
Form Factor	SFX
Form factor	SFX
Item Dimensions	12.5 x 10 x 6.3 centimetres
Item Weight	1.82 Kilograms
Manufacturer	Lian Li
Manufacturer Part Number	SP850 BLACK
Maximum Input Voltage	120 Volts
Minimum Input Voltage	100 Volts (AC)
Model Name	SP850 BLACK
Model Number	SP850 BLACK
Model name	SP850 BLACK
Output Wattage	850
Output wattage	850
Power Supply Design	Full Modular
Product Warranty	1 year
System Bus Connector Type	24/20 pin
Unit Count	1.0 count
Upper Temperature Rating	60 Degrees Celsius
Wattage	850 watts

Reviews

R**D

Great product!

Amazing power supply.. been using it for about 2 years now. Haven't faced any problems

9.08.2025

R**A

PSU

Working Well 👌

18.08.2024

J**A

Good PSU

Great SFX power supply. Fan is quiet and doesn't make much noise. It only has a 300mm motherboard cable so it can be short in some cases.

20.10.2025

K**E

Good PSU

I used it for a few months. I think my PC was using too much power maybe in spikes because it kept tripping OCP. Tripped the protections several times and the unit never failed. Very nice quality

8.01.2026

N**K

Perfect fit

Solid PSU and fits perfectly in my mini ITX build.

3.10.2025

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$351.53

Duties & taxes included

In stock

Sold byAmazon USADelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to USA.

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TrustScore 4.5 | 7,300+ reviews

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Received my product in pristine condition. Great service overall.

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