Arctic Cooling Fusion 550R PSU - Inside the PSU and Test Setup

Article Index
Arctic Cooling Fusion 550R PSU
Fusion 550R Features and Specs
Inside the PSU and Test Setup
Testing the AC Fusion 550R
 


Inside the Arctic Cooling Fusion 550R:

As I grounded myself and prepared to pull the cover off of this PSU, I discovered that there weren't any "Warranty Void if Removed" stickers on the case or covering the screws.  This is the only the second PSU I've pulled apart that didn't have such a sticker.  Even though there wasn't a sticker warning about electric shock, I still made a mental note not to discharge any large capacitors with my fingers.  Once the case was opened I got a good look at the backside of the fan and the main layout of the PSU.

PSU Inside Profile
PSU Inside Profile

 

There are a couple of large choke coils inside this PSU and a nice fat capacitor to help smooth out ripple and noise.  The heatsinks are pretty hefty and should be more than adequate in an energy efficient PSU.  Most PSU of this wattage have smaller heatsinks, but bigger fans - such as the Tuniq Potency 550W.  This PSU looks a little heftier that other larger rated PSUs we've looked at in the past.  The large heatsinks should make the small fan stay at reasonably slow speeds and keep everything nice and cool.

Inside PSU
Inside PSU

 

There is a lot of clear plastic ducting inside the Fusion 550R.  This enables the externally mounted fan to provide airflow to the key areas first.  Once it goes through the main transformer and VRMs it then can cool other voltage regulators that don't generate as much heat.

Inside PSU
Inside PSU

 

Test Setup & Info:

In the past, we've prided ourselves on real-world testing.  For graphics cards, CPUs and memory, what matters is what takes place in real applications and games.  We also held that philosophy for PSU testing, but after a while, we realized that there is more to a PSU that being able to run a machine stable over a few weeks or months.  In reality, if there is a lot of ripple, this can damage sensitive traces on your $700 graphics card or $1300 CPU.  A multi-meter alone is not good enough to check PSU voltage stability.  It's for this reason that we've updated our PSU testbed, and will continue to improve the detail and quality of our PSU reviews.  That being said, we will still be testing the PSU in a system and will be including stress tests from real components in the real world.

We recently purchased a Tektronics TDS2002 60MHz Dual Channel scope and it has already become invaluable around the shop here at BCCHardware headquarters.  I've used it to troubleshoot everything from PSU's to Radars, and we are using it today to check the stability of the Tuniq Potency 550W PSU on the next page.