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Corsair HX620W

Power supply with semi-modular wiring. CMPSU-620HX
Author: Olli Vanhoja
Published: 06.02.2007
Manufacturer: Corsair
Product Group: Power Supplies
In English In English
Suomeksi Suomeksi

Specifications














AC input 115 V 230 V




Input voltage (VAC) 90-264 V




Frequency 47-63Hz




Current 10 A 5 A




Irush current 60 A 120 A




Power factor correction active




Power factor 0.99 at full load




Effiency 80-86%





Colour Black





Operating temperature 0-50 C





Huminidity 10-90% RH





Max operating altitude 10 000 ft





Cooling 120 mm Double ball-bearing fan





MTBF 100 000 hours at 25 C





Safety approval UL, CUL, TUV, CE, FCC, CCC, CB, C-tick





RoHS compliant yes





Dimensions 150 mm (W) x 86 mm (H) x 150 mm (L)





















Practically every manufacturer has complied with the RoHS directive, and so has Corsair. There is active power factor correction on the HX620W like on many other power supplies nowadays. And why would there not be, since without a good power factor you can't sell your power supplies for government use in EU and most of the Asia. Efficiency on this particular power supply is better than I have ever seen on computer power supply (80-86%); usually it is under 80%.

"Utilizing advanced double-forward switching circuit design, the HX series provides >80% high efficiency and Active Power Factor Correction (PFC), ensuring the PSU generates minimal heat during operation and uses less electricity."

Corsair CMPSU-620HX Reviewer's Guide

Specs continued

The HX620W complies with ATX12V v2.2 and EPS12V 2.91 standards.


Outputs:
Voltage (V) 3.3 V 5 V 12 Va 12 Vb 12 Vc -12 V 5 Vsb
Max. current (A) 24 A 30 A 18 A 18 A 18 A 0.8 A 3 A
Regulation +-5% +-5% +-3% +-3% +-3% +-10% +-5%
Ripple (mV) 50 50 120 120 120 120 50
Max combined wattage 170 W 600 W 9.6 W 15 W
620 W @ 50 C ambient temperature

Yes, there are three independent 12 volt rails with a combined maximum current rating of 50 amperes. There is also some kind of automatic current sharing system between rails. This propably works by short-circuiting the rails together on overload situations.

3 amperes for stand-by will be enough for everyone unless one has dozens of usb-devices powered by stand-by rail. HX620W has over current, over voltage, under voltage (power good signal?) and short-circuit protections. Over voltage protection is a very good feature because usually when a switching mode power supply breaks down it first gives a voltage peak to its outputs thus burning other hardware connected to the power supply.

"Gold Plated connectors provides oxide free ultra low-resistance contact between the power supply and your critical components."

Corsair CMPSU-620HX Reviewer's Guide

I don't know about that, but at least it gives a good impression of the quality of the product. Gold plating is also a good corrosion protection. Even though that isn't all too important here in Finland, it might be in damp countries because of the high humidity level.

 


 

Corsair claims that the electrolytic capacitors used are specified for maximum temperature of 105 celsius. Even though the capacitors used are high quality ones, what really makes the difference is how they are placed inside the PSU. In the Corsair's PSU they are placed correctly to the coolest areas of the PSU. Transformers are quite small, which means that the power supply uses very high switching frequency.




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