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Corsair AX1500i 1500W Titanium Power Supply Review

By: Zac O'Vadka | 80 PLUS Titanium PSUs in Cases, Cooling & PSU | Posted: Apr 30, 2014 1:00 pm
TweakTown Rating: 94%Manufacturer: Corsair

Cabling Arrangement




With 1500W of power comes a lot of cabling. There are a total of 22 cables offering various lengths of different connectors. Out of everything included, the only things we don't like are that the SATA cables are all one length and so are the Molex cables. It would be nice to see a few long ones along with a few shorter cables. It is a minor detail, but when you're spending this much for a power supply, the little details matter.




The AX1500i is a single rail unit, so you can load it down however you wish and not have to worry about load balancing. If you are worried about overloading, you can use the Corsair Link software to set customized over-current points. For our testing, we will be doing it as a single 12V rail without setting any OCP points.



A Look Inside




For those that weren't sure how to make one of the world's best power supplies, this is how you do it. The high efficiency of the unit results in minimal heat output and thus less passive cooling is needed. I especially like the warning sticker over the capacitors that state to make sure the unit is unplugged to ensure the capacitors are discharged.




The interleaved LLC transformers have Sync Rectifier boards attached.




This is the reason for the warning label on the bulk capacitors. If you follow the power switch, you will notice it goes directly to the main board and that the current doesn't actually flow through it. It simply controls whether the unit can turn on or off. Be safe, and unplug the unit before working on things.




Nippon Chemi-Con capacitors reside on the primary side of the power supply.




Nippon Chemi-Con capacitors can also be found on the secondary side with a few Rubycon caps here and there.




We weren't happy to find CapXon solid state capacitors present, but there haven't been too many issues arising with these like there have been with electrolytic caps.




Corsair uses there NR140P fan to provide active cooling when necessary. The fan doesn't turn on until the power supply hits 25C or 30 percent load, whichever comes first. Even after ramping up to full speed, the NR140P puts out less than 30dB of noise. Chances are you'll never hear this unit if you are anywhere close to maxing it out as everything else will be screaming instead.

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