Gigabyte's New Odin GT 800W Power Supply

Testing Overview

We changed our testing procedures slightly in our last article. We have added a low input voltage test which is in this case again 100VAC. This power supply is rated from 100 to 240VAC thus we couldn't perform a 90VAC test. We are testing the power supplies with programmable loads from Chroma. If you would like to know more about our testing methodology, equipment, and environment, please read our Power Supply Test Methodology overview.

Note: The rails of the power supply can be regulated through the included software. All of our results are made with standard settings without any regulation.

Before we start with the results we would like to clarify the tables from each rail. Some readers were asking after the last review why we wrote 100% load and we had less than the stated 750W. This is easy to explain. In our static tests we are testing a load from 100% and not an output of 100%. We calculate the load for each rail according to the respective combined power and stated power for each line, because the stated power for each line is not the actual power it can deliver together with the other rails in use.

In our review today we have four 12V rails with two of them rated at 18A the other two at 25A. The combined power for these four rails is 62A which is around 15A per rail. The results shown in the tables (in the second column) indicate how much amperage we are using on the rail. The third column shows the resulting wattage, which is the product of the amperage and voltage of that particular line (P = IV). As the voltages drop during testing, the final result is always lower than the actual stated rating of the power supply.

For example: 19.95A is the load for the 3.30V rail at 100%. If the power supply could deliver 19.95A at 3.30V we would have a result of 63.525W and not 60.06W like we will see on the next page. By the time we add this added with the 5V and four 12V rails we get 100% theoretical load at only 770W instead of 800W. This does not mean that the PSU cannot deliver 800W however, and thus we have added more tests towards the end of the article to determine each rail's maximum capacity.