Performance, Performance Per Dollar And Noise Ratings
The following graph shows the total performance rating of the AX1500i, comparing it with other units we have tested in the past. To be more specific, the tested unit is shown as 100 percent, and every other unit's performance is shown relative to it.
The AX500i is currently the king on this chart, easily outperforming all other high-end platforms we have evaluated so far.
Performance Per Dollar
The following chart may be the most interesting to many of you because it depicts the unit's performance-per-dollar score. We looked up the current price of each PSU on popular online shops and used those prices and all relative performance numbers to calculate the index. If the specific unit wasn't available in the United States, we searched for it in popular European Union shops, converting the listed price to U.S. dollars (without VAT). Note that all of the numbers in the following graph are normalized by the rated power of each PSU.
Because of its high price, the AX1500i doesn't score very well on the performance-per-dollar chart.
The graph below depicts the cooling fan's average noise over the PSU's entire operating range, with an ambient temperature between 28 and 30 C (82 to 86 F).
This is the most silent PSU with more than 1.3 kW capacity that we have tested. It also outperforms many of the PSUs in the 1200 W - 1250 W capacity range. The high efficiency that this unit achieves throughout its operational range helps in lowering the output noise, since the cooling fan has decreased thermal loads to deal with.