We think that this would be a better product if internally the manufacturer added two truly independent circuits. This power supply shares the same switching section between the two transformers and the same secondary filters for the +12 V outputs coming from the two transformers.
It wouldn’t cost much to correct this power supply design, especially when you think about its price tag – USD 350 in the USA. What? Wait a moment. Enermax Galaxy 1000 W costs almost the same thing (in some stores you may find it being sold by only USD 10 or USD 20 more) and has the perfect design for a 1,000 W power supply: two completely independent circuits inside the box and what is more important, the capacity of truly delivering 1,000 W at 50° C.
Tagan TurboJet 1100 W is labeled at 25° C and our friends at Planet3Dnow.de couldn’t pull more than 768 W from the +12 V lines (which are labeled 960 W) even at 25° C. What a bummer!
Internally Galaxy 1000 W uses more and better components: its rectifying bridges can handle double the current compared to Tagan’s and it uses four transistors on its active PFC circuit (Tagan’s uses three), not to mention the whole second +12 V filtering circuit, not available on Tagan’s. So Tagan pricing is completely insane.
Another thing Tagan should do is correct their website, manuals and boxes. They don’t announce all technical specs from their products. For this model in particular, there is no data sheet available (the available datasheet if for the U96 model, which carries six +12 V virtual rails) and we couldn’t find anywhere details about this power supply efficiency and protections.
Even its terrific external presentation has its flaws, and you would learn them only when trying to assemble a high-end system. The absence of a modular cabling system is critical: the cables with the special shielding are very stiff and also unused cables will block the PC internal airflow – since these cables are really thick this can be a real problem.