Search  for anything...

Corsair SF Series, SF450, 450 Watt, SFX, 80+ Gold Certified, Fully Modular Power Supply

Based on 480 reviews
Condition: New
Checking for the best price...
$227.63

Buy Now, Pay Later


As low as $37.94 / mo
  • – 6-month term
  • – No impact on credit to apply
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout.

Payment plans are offered through our trusted finance partners Klarna, Affirm, Afterpay, Zip, Apple Pay, and Google Pay. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Selected Option

Free shipping on this product

This item is eligible for return within 30 days of receipt

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

To initiate a return, please visit our Returns Center.

View our full returns policy here.


Availability: Only 1 left in stock, order soon!
Fulfilled by Thriftly_Store

Arrives Nov 9 – Nov 15
Order within 11 hours and 38 seconds

Available payment plans shown during checkout

Protect Your Purchase

Easy claims online, fast replacements, no fees

Checking for protection plans...

At a glance

Condition
New
Color
80 PLUS Gold
Size
450 Watts
Style
SF
Pattern
Power Supply
Model
CP-9020104-NA
Dimensions
4.9 x 2.5 x 3.9 in
Warranty
2 Years
Works with
Personal Computer

Features 6

  • SFX Form Factor: High end performance in a small form factor
  • 80 PLUS Gold certified: High efficiency operation for less excess heat and lower operating costs
  • Fully Modular: Make your builds and upgrades easy, with clean, great-looking results
  • 100% Japanese 105 electrolytic capacitors: Premium internal components ensure solid power delivery andlong term reliability

Description

SF Series power supplies bring legendary Corsair performance and reliability to the SFX small form factor standard. They have the features you've come to expect from Corsair, with super-efficient 80 PLUS Gold certification, superior voltage regulation, Zero RPM mode for virtually silent operation, and 100% 105 Japanese electrolytic capacitors for better reliability. Fully modular cables make installation quick and easy. If you have big ideas for your next small form factor system, SF Series has the reliable power delivery and quiet, efficient operation you need. Customer Service / Tech support: opt. 1

Specs 25

Model Name sf series
Brand Corsair
Connector Type SATA, peripheral, ATX
Output Wattage 450
Form Factor SFX12V
Wattage 450 watts
Cooling Method Air
Item dimensions L x W x H 4.9 x 2.5 x 3.9 inches

Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Nov 9 – Nov 15

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • Zip Pay in 4
  • Financing through Apple Pay
  • Financing through Google Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


Great PSU for SFF Builds!
This is one of the best performing PSU on the market. I feel confident starting my review with this statement. Story: I bought this for a mITX build. My case supports normal (ATX) PSUs, however I was curious of how this little guy could perform inside my system. First thing to mention is the quality of the product, it screams high quality everywhere, from the package to the components itself. compared to Silverstone SFX PSUs, I can tell the difference quality-wise, and don't get me wrong, I do like the offering from Silverstone in the SFX market. Installation: In therms of installation and setup, no problems at all, all the cables necessary are included in the box and this PSU being modular makes it pretty simple to just connect the cables you will be using in your system (everything is coded to match the connectors correctly). Cable management perhaps is the only "con" I could mention, even though "modular" should equals less tangle in cable management, in this case is not that accurate. Compared to a 450w non-modular Silverstone PSU the cable management is more difficult to route between my tiny SG13 Silverstone case, the modular connectors are a little stiff, so bend them doesn't feel natural, I could even think I may broke one of the connectors if I apply too much force on them trying to route them out of the air-flow path of my case fans. The good thing is that if you are like me, needing only a couple connectors in place should leave enough room free for the case to breathe fresh air. Performance: Silent, works very cool, the fan doesn't even spin most of the times, so you can be sure the noise levels coming from this unit will be near to 0. Temps seems to be fine even with my case components being little cramped inside. Playing games for around 3 hours felt natural, heat and noise remain the same as it being in Windows Desktop just idle (to be fair, the only noise was coming from the GTX 1060 cooler). I can tell this PSU can handle my system with ease and I am pretty sure once I feel the need, I will be able to apply OC to the CPU and RAM without any issue. My setup consist in: I5 6600k stock Noctua NH-L9x65 CPU Cooler EVGA Stinger MiniITX Mobo 16GB Ripjaws DDR4 3000mhz RAM Samsung Evo 850 SSD Zotac GTX 1060 6GB Video Card Silverstone SG13 Case Corsair SF450w Modular SFX PSU Windows 10 Pro Conclusion: If you are in the market for a new PSU in small form factor, this is a no brainer. Due to the tiny size of SFX PSUs, makes them ideal for cases with little to none air flow, leaving more free space between the CPU Coolers and other components compared to ATX or even SFX-L PSUs. I recommend this PSU! ... show more
Reviewed in the United States on August 20, 2016 by Alex Castillo

Plenty of power, and runs very quiet and cool
This is my first SFX PSU and I was amazed at how petite they are compared to an ATX PSU! Here's my review, by topic: CONTENTS OF PACKAGE: This PSU was well-packaged and came with the PSU and a variety of connectors packaged in small velveteen drawstring pouches, along with some small zipties for cable management. INSTALLATION: Connected easily into my NCASE M1 with 4 provided screws into the SFX bracket. FUNCTION UNDER LOAD: So far my system includes an H170 motherboard, an i3 CPU, CPU HSF, 16 GB DDR4, an M.2 SSD, a 2TB 7200 rpm HDD, an 8TB Seagate Archive HDD, and a slim Blu-Ray drive/burner. The PSU doesn't even break a sweat while powering these, even functioning simultaneously. However, this is using onboard graphics. With a GPU card installed/during gaming the load will certainly be higher although it seems there will be plenty of overhead room left even for a powerful card. NOISE/HEAT: The fan doesn't even spin up under the current load. I imagine it would kick in with a graphics card, but with my current load it's 100% silent and produces very little heat to speak of. ... show more
Reviewed in the United States on December 7, 2016 by Ed B

Silent, high quality
No noise. Except for the fan spinning once on power on, i have not been able to put enough load or heat to turn it on. Ran GPU and CPU stress tests (around 204 watts) for over an hour and fan never came on. Was only a little warm after the hour. And that could have been due to heat from CPU. Note, i have the intake fan facing up(basically exhaust when fan isnt on) and right under a fresh air vent. Case is Silverstone Computer Case with Mesh Front Panel,Black (SG13B) with Noctua Low-Profile Quiet CPU Cooler for Intel 115x Based Retail Cooling NH-L9I CPU cooler and Noctua SSO2 Bearing Fan Retail Cooling NF-A14 iPPC-3000 PWM front fan. Running at 430 and 590 rpms right now(no low noise adapters, just set both profiles to 0% at 30C to 100% at 65C for CPU and MB temps, room is 25C/73F probably). Did not know about this power supply. With the SilverStone Technology Universal ATX to SFX Power Supply Bracket RL-PP08B adapter adding around 22mm of height, probably could have gotten a 120mm based cooler like Noctua NH-L12 Low-profile Quiet CPU Cooler with 120/90mm Dual PWM Fan, not sure. Dislikes: - The SATA power is using all right angle connectors, so they are very hard to position near each other and also only 4 connectors. If you only have one or two drives not an issue. You need 2 PCIe 6pin(peripherals), 3 ATX/CPU/EFS 8pin(cpu,gpu)(not 8pin PCIe) and 1 ATX 10pin plus 1 ATX 18pin(motherboard) female connectors on the power supply side to make your own set of cables. Last note, does not come with ATX to SFX adapter plate. Glad, since I found the Silverstone adapter that is much better design than Corsair's adapter. ... show more
Reviewed in the United States on May 16, 2016 by whatohwhat

Mind-blowing little unit
6 years continued service in my mini-ITX TVPC gaming hotbox and no failure. Recently, I upgraded my motherboard to an AMD 7700X, 32GB 6000Mhz DDR5 RTX 3060Ti, two SSDs, a 120mm AIO water cooler, and 2x 120mm fans! With the processor and GPU over clocked, this SF450 continues to support 5 hour gaming sessions. The 12V rail under full gaming load never drops below 11.74V and the fan stays quiet. Corsair really outdid themselves on this one! I'll stick with them from now on in the SFC power supply game! I've drank the koolade! ... show more
Reviewed in the United States on May 30, 2023 by Antman

Complete failure after 23 days, however Corsair did replace it.
6/5/2018 Fit perfectly in my compact tower, performed as expected for exactly 23 days, then complete failure. I would press the power button and my LEDs would flash and click twice and it would shut down within a second. Confirmed the failure with a local repair center, and confirmed it was not due to heavy load (my build only required 300-350 watts). 6/19 The RMA process via the Corsair website was fairly straightforward albeit frustratingly slow, but I now have a new PSU. Fingers crossed that this one lasts longer than the first. To be fair, I give the WORKING PSU 5 stars, I love it, it is quiet, and fits perfectly in my custom build, but I docked a star because of the inconvenience of having to get a replacement so soon after my initial purchase. ... show more
Reviewed in the United States on June 6, 2018 by Amy D.

Great Budget SFX for Server Build
Thought about docking a star on this review for the photos of this thing- I had an issue previous to going with this SFX psu where the psu I ordered was NOT sfx, even though they said it was. I managed to find out and cancel my order, and found my way (after struggling to find ANY sfx psu that would ship quickly) to this one. I wish they'd have pictures of someone holding the thing, or something. It's easy to see the stock images for this unit and think, "hmmm doesn't that seem big?" No? Just me? Okay...which is why I gave it 5 stars. Because, yeah. It's great. I've got a pretty low powered server running 24/7, and I doubt this thing's fan will EVER run, in my case. No fires or explosions yet, so that's a win. Cables are short, so make sure you're using this in a small case. My system will theoretically peak at 360 watts, so the 450 is perfect for me. If you're going for efficiency, remember not to go too close to your max wattage, BUT also don't get a 1600 for a 500 watt system- that can be inefficient as well. Pretty cut and dry psu, definitely recommend. Oh I also realize I'm a total hypocrite for not posting a picture of me holding this thing in my hand. It's already built so...oops? ... show more
Reviewed in the United States on June 20, 2020 by Calico Morgan

Completely silent at low to medium load
This PSU is quieter than the Silverstone SFX-L ("long") PSUs which fit a 120mm fan. How? The fan in this PSU is *off* at ordinary loads. I'm not sure yet what would even cause the fan to come on: I've run for 10 minutes with a 980ti and i5-6600K both maxed out and the fan didn't turn on. I might have to wait until summer. Since it's standard SFX size you've got more room to maneuver in the cases which support SFX-L. The modular cables are not super soft, but they are flexible enough to route without having them fight with you. My only objection to the cables is that the clips don't seem to latch as positively as others. This PSU has two separate 6+2 pin PCIe power cables which both run all the way back to the PSU. The Silverstone I replaced had one heavier cable with dual 6+2 pin headers on one end which was a little nicer to deal with. In a Silverstone Raven, the internal power routing for the input power can't quite reach the connection on this PSU without unhooking it from its internal clips so it can cut the corner in the case. The PSU's connection is at the far end relative to the cable routing, and the connector is upside-down compared to what the case was designed for, requiring an extra loop. This PSU did not come with an ATX adapter plate, so you can't put it in a larger PC case. Overall I'm very happy that this PSU is available now: The Silverstone SX500-LG I replaced made horrible chirpy sounds at low loads because it tried to drive the fan a little too slowly. The SFX-L (larger, square, fits 120mm fan) was also much harder to work with. ... show more
Reviewed in the United States on March 28, 2016 by Benedict J. Jackson

Compact and efficient
I'm amazed that such a compact PSU is so quiet and efficient. Technical reviews show that it's performance is excellent too. I'm using this with an ATX-to-SFX adapter plate in a Raijintek Metis case. The small size allows a lot of extra space for cable management compared to using a full-size ATX PSU. Full-modular cabling is nice for quick assembly and leaving out any cables you don't need. The cables om this PSU aren't super short or super long. I find them a little long for my mini-ITX system, but they'd definitely be short for some tower desktop builds (not that most people would put one of these in a tower desktop). Only con is the price is high for a 450W supply. ... show more
Reviewed in the United States on February 5, 2017 by Brianosaurus
Checking for best price...