Let's have a look at the results. We will start off with the average load/idle temperatures.
We start of in the mid to upper 30's at idle. this is a little bit higher then we would like it but idle temperatures at stock speeds are only a faint indicator, so we won't place too much value on them. Looking at the load temperatures we reach the early 50's. That's a bit more of an indicator but still no reason to prejudge here. Let's have a look at what happens when we turn up the heat a bit.
At 3.6 GHz and at idle we barely break in the 40's. The SanAce even manages to remain below 40, at 39 degrees. Looking at the load temperatures we have a similar picture but the margins are much more clear here. Both the GentleTyphoon and the BladeMaster are at over 70 degrees. The GT even reaches 72 degrees while the SanAce remains below 70, actually pretty clearly with a measured temperature of 67 degrees. Very clear already the the higher start off temperature at stock and idle does not mean much and it shows that most certainly this cooler favors airflow and plenty of it.
Now we are at 4.0 GHz and the idle temperatures are only 2-3 degrees higher while the load temperatures go up a bit more. The GT and BladeMaster break into the 90's with the GT again being 2 degrees higher while the SanAce again makes a clear stands at 87 degrees. This is almost exactly a 20 delta for all fans going from 3.6 GHz to 4.0 GHz. The GT being a bit of an exception here but we get to this in a moment.
Comparing all 3 temperatures side-by-side in reference with the ambient temperature is a good way to get a better picture. We obviously want to be as close to ambient as we can be and the TPC 812 manages to remain in a 10-12 degree range at idle. That is a good overall result. The load temperatures jumps up 15-20 degrees which is not to bad either.
Again at the 3.6 GHz test we see that all fan perform very similar at idle and separate themselves rather clearly at load.
Moving up to the 4.0 GHz test only intensifies the previous view. At idle we remain close, close enough to be within 3-4 degrees but at load the picture changes. The gap widens and the separation is more clear.
The Delta T charts bring more light to the temperature above ambient.
A more clear view of the temperature differences. We can also see how well the TPC 812 benefits from the added airflow of the Sanace by looking at the beginning of the cooldown phase. The SanCae configuration recovers faster then any of the other fans after the stress test.
Good results here as well. The TPC 812 could possible bnenfit even more from even more airflow; however, on a 120mm fan scale that would get pretty noise. Using a 140mm fan could make a significant impact.
Our throttle tests show what really happened. We recorded signs of CPU throttling at least at the 4.0 GHz range for the GT fan. Although the tests seemed near flawless there was a little throttling going on. We saw only 100 MHz and it was isolated to the GT fan.
At 3.6 GHz the GentleTyphoon is in the clear.
The BladeMaster fan performs decently and optimal for the TPC 812. It is a fine balance between performance and noise.