In Figure 20, you can see Toughpower 750 W label stating all its power specs.
click to enlarge
Figure 20: Power supply label.
From the previous page we came with some maximum theoretical numbers for the +12V output (1,029 W), +5 V (143 W) and +3.3 V (94 W).
As we mentioned earlier the maximum current/power each line can really deliver will depend on other components, especially the transformer, the coil and the wire gauge used.
One interesting thing about this power supply is that Thermaltake didn’t state the maximum power for each individual output on the power supply label, what is really unusual. For the +12 V output, for example, they stated 18 A for each one of the four virtual rails. This translates into 216 W per rail or 864 W total – more than the maximum labeled power for this power supply. This number is below the maximum current the +12 V rectifiers can deliver anyway.
For the + 5 V output Thermaltake stated a 28 A maximum current, which translates to 140 W, while for the +3.3 V output the manufacturer stated a 30 A maximum current, or 99 W. On the label, however, Thermaltake says that the combined power of +3.3 V and +5 V outputs is of 180 W (since they are connected to the same transformer output).
+5VSB output is labeled as having a 3 A maximum power, meaning 15 W.
Unfortunately we don’t have the necessary equipment to make a true power supply review; we would need to create a real 750 W load to check if this power supply could deliver its labeled power or not.
