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Tagan SuperRock TG880-U33II 880 Watt Power Supply

By: David Walker | Other PSUs in Cases, Cooling & PSU | Posted: Mar 10, 2009 4:00 am
TweakTown Rating: 74%Manufacturer: Tagan

Specifications, Availability and Pricing


Tagan SuperRock TG880-U33II 880 Watt Power Supply


The label makes claim to 864 Watts of 12V power, or a healthy 72 amps of the 880 Watt total capacity. Many 1000 Watt power supplies do not command that much 12V capacity. There are four rails for 12V support with 18 amps each. So, some quick math and we have 18x4 or 72 amps. This is an interesting capacity since you would never be able to use it all. Most systems will need to use anywhere from 50 to 70 Watts from the 3.3/5.5VSB/-12V capacities. It makes me wonder if we really have a 1000 Watt power supply in a lower capacity version. We will find out.


Tagan SuperRock TG880-U33II 880 Watt Power Supply


You will note the only feature exceptions are the 50C power rating and modular cabling. Since the ATX standard only requires the manufacturer to rate the PSU at unrealistically low 25C operating temperature, the true power rating may be significantly less at 50C since power loss can occur as operating temperatures rise to this level. There are no claims on the box or manual indicating any type of temperature specific power rating, so I have to assume that it is the 25C standard. Now, the one interesting note is that instead of the usual 85C capacitors, the Tagan TG880-U33II uses 105C. We will see if this has any bearing on the power supply performance at 50C.


The power supply is 80 Plus Bronze certified which means the unit operates at a minimum of 82% efficiency at 20% load, 85% at 50% load (typical) and 82% at 100% load. This means the unit uses less power at the socket to perform the same work as less capable power supplies. Certification standards range from the base 80 Plus, through Bronze, Silver and lastly, Gold, with each offering improved efficiencies. We will certainly be validating this claim.


The power supply is a relatively new release and, unfortunately, I was not able to find it from any popular retailer here in the U.S. - While this is understandable for a newly released product, it will be hard to determine what kind of value this power supply offers without a solid street price. If I had to guess (and, it really is a guess), I would expect this power supply to be competitive at a price of around $180.


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