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Corsair CX750M vs Corsair SF450
Analysis:
The Corsair CX750M is one of the very best PSUs that one can get for around $160. The Corsair SF450, however, while a very good choice in its own right, falls just a bit short of being remarkable.
No sources that do their own in-depth testing have considered the Corsair CX750M to be a good enough purchase for it to earn a spot in their PSU roundups, which is typically a bad sign.
As for the Corsair SF450, it was really well-received by reviewers at AnandTech, a reliable source that's known for conducting its own, high-quality, in-depth testing. It performed great in its "Up to 450 Watts& - Best PC Power Supplies: Holiday 2022" roundup and was named its "Ranked 2 out of 2", which, on its own, makes it a product that warrants a closer look.
Comparison of expert ratings
Recommended
Mentioned
—Not Mentioned
AnandTech

Tom's Hardware

MakeUseOf

GamingScan

Corsair SF450
$228
Tech. Specs Comparison
Corsair CX750M
$169
Corsair SF450
$228
ATX 20+4 Pins
1
1
ATX 4+4 Pins
1
1
Multi-Rail PSU
No
No
PCIe 6 Pins
0
0
PCIe 6+2 Pins
4
2
PSU Efficiency
80 Plus Bronze
80 Plus Gold
PSU Form Factor
ATX12V
ATX12V
PSU Modularity
Semi
Full
SATA Ports
8
4
Wattage
750 (W)
450 (W)
Reddit Threads (0)
—
No Data
Has no expert reviews
—
No Data
Good expert review scores
Recommendations

Depth of
analysis
analysis
No
In-house
Testing
Testing
in “The Best PC Power Supplies (2023 Reviews)”
Last updated: 3 Jan 2023
Recommended by trusted experts
Depth of
analysis
analysis
Yes
In-house
Testing
Testing
in “Up to 450 Watts& - Best PC Power Supplies: Holiday 2022”
Last updated: 29 Nov 2022
Depth of
analysis
analysis
Yes
In-house
Testing
Testing
in “How to Build a Great Media Center PC - Build Your Own”
Last updated: 1 Dec 2017