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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⚡ Power your passion with precision and style

ADVANCED SAFETY - Built-in intrusion current limiter protects your components from electrical surges
COMPACT MODULAR - SFX form factor with full modular cables for sleek, clutter-free setups
SMART THERMAL CONTROL - Adaptive start/stop fan limit adjusts between 45°C and 60°C for whisper-quiet cooling
POWERHOUSE PERFORMANCE - 850W max output fuels your high-end builds with ease
GOLD STANDARD EFFICIENCY - 80 PLUS Gold certification ensures up to 92.6% energy efficiency, saving power and reducing heat

The Lian Li SP 850 is a compact, high-performance SFX power supply delivering 850W with 80 PLUS Gold efficiency. Featuring full modular cabling, advanced current limiting protection, and smart thermal controls, it’s engineered for professional-grade PC builds that demand reliability and sleek design.

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Brand	Lian Li
Manufacturer	LIAN LI
Series	SP850 BLACK
Product Dimensions	24.13 x 10.16 x 17.78 cm; 1.82 kg
Item model number	SP850 BLACK
Color	black
Form Factor	SFX
Item dimensions W x H	24.1 x 10.2 x 17.8 cm
Wattage	850 W
Item Weight	1.82 Kilograms

Lian Li SP 850 80+ Gold, Black Color, Performance SFX Form Factor Power - SP850 Black

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