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Corsair Enthusiast Series TX 550 Watt ATX/EPS Modular 80 PLUS Bronze (TX550M)

4.3 out of 5 stars 910 customer reviews
| 69 answered questions

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Modular Series
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  • Universal AC input from 90~264V. No more hassle of flipping that tiny red switch to select the voltage input!
  • Over-voltage and over-current protection, under-voltage protection, and short circuit protection provide maximum safety to your critical system components.
  • A dedicated single +12V rail offers maximum compatibility with the latest components.
  • 80PLUS Bronze certified, delivering up to 85% energy efficiency at real world load conditions.
  • An ultra-quiet double ball-bearing fan delivers excellent airflow at an exceptionally low noise level by varying fan speed in response to temperature.
  • A five year warranty and lifetime access to Corsair's legendary technical support and customer service.
  • The latest ATX12V v2.31 and EPS 2.92 standards and it is backward compatible with ATX12V 2.2 and ATX12V 2.01 systems.
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Technical Details

Size: 550 Watt | Style: Modular Series
  • Brand Name: Corsair
  • Model Number: CP-9020001-NA

Product Description

Size: 550 Watt | Style: Modular Series

Product Description

The Enthusiast Series TXM is part of Corsair's best price-performance range of power supplies, designed to meet the exacting standards and performance needs of demanding enthusiasts. TXM Series power supplies are ideal for performance enthusiasts who require an affordable, low noise, high-wattage, reliable and highly efficient PSU. Corsair TXM power supply gives the flexibility of using only the cables needed for a clean system build with optimal airflow.

From the Manufacturer

Based on the award-winning Enthusiast Series TX line, Enthusiast Series Modular PSUs add a modular cabling system for improved installation flexibility. It provides a great combination of exacting performance standards and affordability.


With the modular cabling system, you can connect only the cables you need.

The modular cabling system includes a complete set of flat, detachable cables that allow you to use only the ones you need. This allows you to reduce clutter for a clean-looking system with improved airflow. The attached ATX cable is fully-sleeved for superior protection. And, all cables are extra long to support full-tower PC systems.

80 PLUS Bronze Certification for Smart, Efficient Power Delivery

80 PLUS Bronze is your guarantee that your Enthusiast Series Modular power supply will deliver 85% efficiency or higher at 50% load. Superior efficiency is essential in a high performance power supply — it runs quieter, generates minimal excess heat, and saves you money every month.

Ready to Take the Heat

Enthusiast Series Modular is designed for reliable operation in high-performance PCs where clean, stable power is important. It’s rated for full, continuous power delivery at an ambient temperature of up to 50° Celsius.


Low Noise with Zero RPM Fan Mode

The fan doesn’t even spin under light to medium load – that is, a lot of the time that you use your PC. And when you’re pushing it hard, the Enthusiast Series TX-M varies its fan speed in response to temperature, so the 140mm double ball bearing fan spins only as fast as it needs to. The result is exceptionally low noise levels.

High Efficiency
  • Complies with the European Union ErP Directive (2009/125/EC) so the power consumption of the whole system, in either standby or off mode, can be less than 1W when used with a properly configured, ErP-compliant motherboard
  • 80 PLUS Bronze certified, delivering up to 85% energy efficiency under real-world load conditions
Reliable Power Delivery
  • A dedicated single +12V rail offers simple configuration and maximum compatibility with the latest graphics cards and other components
  • Active Power Factor Correction (PFC) with PF value of 0.99
  • Over-voltage, under-voltage, over-current, and short circuit protection provide maximum safety for your critical system components
  • High-quality capacitors provide uncompromised performance and reliability
  • Safety Approvals: cTUVus, CE, CB, FCC Class B, TÜV, CCC, C-tick
  • Conforms to ATX12V v2.31 and EPS 2.92 standards, and is backward compatible with the ATX12V 2.2 and ATX12V 2.01 standards
  • Universal AC input from 90~264V

Corsair Power Supplies: Designed for Enthusiasts, by Enthusiasts

The ultra-quiet 140mm fan automatically adjusts its speed in response to temperature.
Critical Protection for your Components.

Adherence to exacting performance standards for voltage regulation helps protect your high-performance gear. Exceptionally clean power output with low ripple and noise and multiple protection mechanisms gives you the confidence you need.

The Corsair Advantage

With a long history of building enthusiast-grade memory and components, we’ve earned a reputation for quality, compatibility, and performance. Should you ever need help, we’re available by phone call, email, and web forum.

Package Contents

  • Enthusiast Series Modular power supply with attached ATX power cable
  • Modular cable pack
  • Accessory bag with mounting hardware, cable ties, and case badge
  • Installation Guide


Dimensions (H x W x L) 150mm x 86mm x 160mm 150mm x 86mm x 160mm 150mm x 86mm x 160mm 150mm x 86mm x 160mm
Power 550 Watts 650 Watts 750 Watts 850 Watts
80 Plus Bronze Bronze Bronze Bronze
ATX Connector 1 1 1 1
EPS Connector 1 1 1 1
PCI-E Connectors 2 2 4 4
4 Pin Peripheral Connectors 6 8 4 4
SATA Connectors 6 8 8 8
Floppy Connectors 2 2 2 2
MTBF 100,000 hours 100,000 hours 100,000 hours 100,000 hours

Product Information

Size:550 Watt  |  Style:Modular Series
Product Dimensions 11.6 x 5.3 x 8.5 inches
Item Weight 4.2 pounds
Shipping Weight 6.4 pounds
ASIN B005E98J28
Item model number CP-9020001-NA
Customer Reviews
4.3 out of 5 stars 910 customer reviews

4.3 out of 5 stars
Best Sellers Rank #2,978 in Electronics > Computers & Accessories > Computer Components > Power Supplies
Date first available at Amazon.com July 23, 2011

Warranty & Support

Product Warranty: For warranty information about this product, please click here


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Customer Questions & Answers

Customer Reviews

Top Customer Reviews

By Harvey Ramos on July 5, 2009
Style Name: TX SeriesSize: 650 Watt Verified Purchase
This is a great, rock solid power supply. This PSU is capable of handling almost anything that you can throw at it, except for some extremely exotic setups.

Most computers only consume around 100-150w, and even a high end computer might consume maybe 200w. That's why most OEM computer manufacturers put small 250-350w PSUs in their systems. If you look at online reviews of highly overclocked systems with multiple video cards (SLI/Crossfire) they consume at most about 500-600w. Anandtech (a very trusted hardware review site) in a comparison of the ATI Radeon HD 4890 and NVIDIA GeForce GTX 275 (google it) also did a roundup of other comparable video cards and some SLI/crossfire setups. Their review system was a Core i7 965 @ 3.2Ghz (non-overclocked), 6GB of RAM, and SSD drive, and X58 based motherboard. Idle power consumption ranged from 170-260w, and full load from 260-420w.

The point is you don't need a 1000w PSU even if you have a high-end system. The wattage race is long over. A good PSU from a good PSU manufacturer is all you need. For regular desktop systems, a good choice is Corsair's 400CX or Antec's EA380. If you need a bit more power for an overclocked system, or multiple video cards this PSU is a great choice. Also for consideration in this price/quality range are Antec's EA650, SeaSonic's S12 and M12 550w & 650w versions, and PC Power & Cooling's 650 & 750w versions along with Corasir's own 750w version of this same power supply.

This power supply is also 80 PLUS certified, which means that it maintains at least 80% efficiency across a range of power usage from 20% of it's capacity (~130w) all the way up to it's rated maximum. This is *very* good. Most off-brand PSUs only make about 70-75% efficiency.
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Style Name: TX SeriesSize: 750 Watt Verified Purchase
This review probably won't speak to your uses for this item, but it will speak to the general bulletproofness of the Corsair. Sorry, I mean *BOMB*proof. I'll let the other 50 reviewers tell you about how this works in a computer, which I'm sure it excels at. I, on the other hand, needed at least 600 watts for a mobile DJ rig that was running off a gas generator, rolling around in 105 degree heat and nonstop dust storms. Please know, before we continue, that my conversion of the Corsair 1) voids the warranty and 2) is not entirely safe for the electrical newbie, so please don't go doing this unless you're comfortable handling live wires and have done your research on hacking ATX PSUs. I'll let you find that info on the internet and instead focus on the performance and reliability of the 750TX.

The environment this was in is knowing for destroying moving parts, devouring motors of all kinds, and generally ruining stuff in a hurry. It's the alkali flats you always see those car commercials filmed in the middle of nowhere, Nevada. Temps soar and the dust is so fine it gets into EVERYTHING. If you run a motor or any kind with a fan, the rule of thumb is to clean or replace the filter daily. It's hot and it's nasty.

The Corsair was literally buried in dust at times, baking in the sun, and it never stopped fanning itself (silently) or providing steady power. And we're talking hellishly dynamic loads here, too. Bass heavy music cranked to 11 will basically give you alternating zero to full loads. I blew up a lesser PSU doing this same thing before finding the Corsair ("melted, then popped" would be more accurate). This thing has gone for 20 hour stretches of this without a whimper. I blow fuses on the amps before this even gets warm.
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Style Name: Enthusiast SeriesSize: 650 Watt Verified Purchase
Length: 8:57 Mins
I am extremely happy with this power supply. There are only two drawbacks (mentioned later). I love the power efficiency (80 Plus Bronze) so that it (1) doesn't waste energy, and (2) doesn't generate as much excess heat (which is where energy waste goes) so that (A) your case can run cooler with less heat contributed by the PSU, (B) faster with less heat (the enemy of computer speed), (C) quieter because both the PSU fan and case fans don't have to work as hard to exhaust heat.

It has very long cables to reach everywhere in my case. I especially like that they are long enough to let me run them with good cable management and don't have to be a spider web strung across the middle of my case, or risk banging into fans if not able to tie down to the sides. The cables are covered in a nice mesh material (common on premium cables). The wires are very stiff (explained in the video), which is a pro and a con, although mostly a pro. They seem very well constructed, but will take some bending to get things to daisy chain (drawback #1). But it is also nice that they hold their position so they don't flop around and get in the way. But might take more work to coax them into the position you want. The flip side of the long cables is that you will have excess cable, and seems like quite a bit (drawback #2). So make sure you have room in your case to nicely tuck bundles of them that you aren't using (see near end of video), otherwise they could get int he way of airflow. I'll take the length any day over having less to work with.

Although it is 650W, that is more about the maximum power it can crank out, but realistically you will end up using a lot less. My Kill-a-Watt meter says that I use 50.2W when on and idle, and spikes 90W during activity.
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