will this work in a mini itx case?

I have a phanteks evolv shift 2 mini itx tower this worked perfectly but I ended up getting a 750 watt I needed the extra power for my 3090

Are the cables cross compatible? If I’m replacing the 650w unit with the 750w version, can I just use the old cables?

If you are replacing it with the same PSU just higher wattage, then yes it is compatible. If it's a different PSU then no.

Ok i have a vbestlife itx computer case, aluminum alloy mini itx desktop computer case would it work in there?

The manufacturer is stating a 1U psu...that said, if your case is a little over 5" thick, the Dagger should fit.

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SFX Pro 450W Power Supply, 80 Plus Bronze Certified PSU

Product ID: 140493377

Details

Brand
FSP
Compatible Devices
Computer
Connector Type
ATX
Cooling Method
Air
Form Factor
SFX
Item Weight
1.22 kg

⚡450W stable power output

🌬️Intelligent temperature-controlled fan

🛡️80 Plus Bronze certified efficiency

S$174

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Description

⚡ Power your mini build like a pro — compact, cool, and unstoppable!

COMPACT POWERHOUSE - 450W of reliable, efficient power tailored for small form factor builds.
SMART COOLING TECH - Intelligent sleeve fan dynamically adjusts speed to keep your system whisper-quiet and stable.
SLEEK SEAMLESS SETUP - All-black ribbon cables and included SFX-to-ATX bracket for a clean, professional build aesthetic.
EFFICIENCY MEETS ENDURANCE - 80 Plus Bronze certification ensures lower energy waste and cooler operation.
ROCK SOLID VOLTAGE REGULATION - Advanced DC-to-DC module design guarantees consistent power delivery to protect your components.

The FSP SFX Pro 450W is a compact, 80 Plus Bronze certified power supply designed for Mini-ITX, Micro-ATX, and SFF PC builds. Featuring intelligent fan speed control, a robust DC-to-DC module for stable voltage, and sleek all-black ribbon cables, it delivers efficient, reliable power with a professional finish. Includes an SFX-to-ATX adapter bracket for versatile installation and backed by a 3-year warranty.

Specifications

ASIN	B07T2G4XWQ
Best Sellers Rank	#201 in Computer Power Supplies
Brand	FSP
Compatible Devices	Computer
Connector Quantity	2
Connector Type Used on Cable	ATX
Cooling Method	Air
Customer Reviews	4.1 4.1 out of 5 stars (131)
Fan Size	8 centimeters
Form Factor	SFX
Global Trade Identification Number	00845685010315
Item Dimensions	5 x 4 x 2.5 inches
Item Weight	1.22 kg
Manufacturer	FSP Group U.S.A
Maximum Input Voltage	230 volts
Mfr Part Number	PPA450AA01
Minimum Input Voltage	90 volts_of_alternating_current
Model Name	SFX PSU
Model Number	PPA450AA01
Number of Fans	1
Output Wattage	450 watts
Power Supply Design	Non-Modular
System Bus Connector Type	ATX
UPC	845685010315
Unit Count	1 Count
Warranty Description	3 year
Wattage	450 watts

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