03-24-2015, 08:47 PM
http://us.hardware.info/reviews/5949/int...o-the-test
Quote:The reason for this test is our original article about Gigabyte's revision policy, in which we found out that while testing the 2.0 revision of the GA-B85M-HD3 the mosfets of the CPU power-supply heated up too much, causing the CPU to clock down. Gigabyte defended itself by claiming similar scenarios also occured with other manufacturers, ignoring the fact that the main point of our article was not about the throttling issue, but instead the re-use of productcodes. But enough about that; Gigabyte's claim that this could also happen with other manufacturers was more than enough reason to conduct a new test of budget motherboards.
...
The results of our VRM-test are shown in the table below. As we wrote on page 3, it's the maximum temperature measured during 10 minutes of H.264 video-encoding workload. We performed the test with an Intel boxed cooler as well as a Cooler Master Hyper 212 Evo towercooler. Temperatures above 90 °C are in the critical zone in our opinion and are shown in red. Values below 80 °C on the other hand are excellent and are shown in green.
The good news is that none of the motherboards are throttled, something we previously saw with the B85M-HD3. At the same time we noticed that the three motherboards that use three phases and two mosfets per phase (the two ASUS boards and the Gigabyte H81M-S2V) are in the critical zone when paired with a tower cooler. It wouldn't come as much of a surprise to us that the CPU would throttle when subjected to a high CPU-load for more than 10 minutes, due to the VRMs heating up too much.
We can also see that ASRock's decision to put a four-phase powersupply on the H81 does have effect. The temperatures of the mosfets remain low in all cases. There's also some appreciation from our side for the Gigabyte H81M-HD3. This board is the only one that has an enhanced turbo and is therefore under more load during this test yet its temperatures remain low. This is definitely a case of the use of better components and/or better use of the phases.