For the test setup we used the following parts :

ASUS Rampage 3 Extreme
Intel 990X Gulftown @4Ghz watercooled
Corsair 6Gb Dominator PC12800C8 rams
Corsair HX1000 Power supply
Lian Li PC08B Case

First we test the GTX480 at stock speeds : 700 GPU core and 1848Mhz ram speeds. Second test is with the GTX480 overclocked at 850Mhz and the rams at 2100Mhz. To remain stable we upped the GPU voltage to 1125mV.

At first we let the card idle for about 15 mins and monitored the GPU and PCB temps in GPU-Z. The temps are easy to monitor, as you can select during testing the min, max, average and current temp readout in the GPU-Z sensor tab. For the load test, MSI Kombustor is our favourite torture test. We ran GPU Burn in at 1900 x 1080 DX11 resolution (max of our 24" monitor) during a period of 15 mins. This seems more than long enough as this Furmark based test heats up the card more than most games ever would.

First I tested the 140mm Wing Boost fans at 100 % setting. Still being pretty silent, though the load test results weren't what I expected. Not being able to match the Arctic Plus II solution was sort of a fail to me. Touching the back of the GTX480's PCB in the vicinity of the VRM area almost burned my finger. Similar experience as what I previously discovered with the Extreme plus II. It's nice to cool that hot GPU, but plz engineers don't forget the other vital parts plz. To exclude a bad mounting, I swapped the 140mm with 2 high speed Corsair fans ( 2300rpm ) Load temps dropped tremendously to 55° C. Though the tornado sound was not appreciated by anyone in the livingroom. Time to swap again, this time with Alpenföhns Orange Wing boost 120mm version. Them not being able to match the high speed 2300 rpm fans' performance. But being far better balanced in noise/performance ratio. When set at a mere 50% they are about able to match the Arctic Extreme Plus II. Once at 75% fan speed, the design of the massive heatsink comes into play. When run flat out, the Peter VGA is a whopping 7°C cooler than the slimmer Arctic solution. Let's see what  happens when we cranck up the GTX480 speeds. 

With the GPU running at 850mhz and the Rams at 2100Mhz the distance between the Arctic and the Peter VGA become more apparent. The larger heatsink of the Alpenföhn has an easier time to dissipate the developped heat. Seems logic, as the air flow generated by the 120mm fans is far more important than the tinier 7cm units from the competition. The Arctic is running on it's toes, as the difference between the fans at 60% and 100% is close to zero. The Peter VGA still shows temperature scaling with increased fan speed. As mentioned with the stock runs, faster alternate fans will drop the temps even more at the cost of more dBa's. Let's take a look now how the noise/performance ratio is with the Wing Boost fans. 

The 140mm combo is the quietest, which is how it should be. Though I never conducted the tests with these fans at a speed lower then running 100%. This due to the above mentioned low VRM cooling capacity. For the 120mm fans they get audible at 75-100%, though the noise is not that irritating. Far from the accoustic performance of the Corsair H80 fans. Logicly this aftermarket cooling remains a lot quieter then the stock fan running full blast.