ASUS STRIX GTX 780 OC 6GB Review - Exclusive

Today we review the brand new ASUS STRIX GTX 780 OC Edition 6GB DirectCU II video card. ASUS has taken an NVIDIA GeForce GTX 780 GPU and wrapped it in a complete custom "silent" cooling solution and doubled the stock VRAM creating a unique package. We will look at performance and compare it to GTX 780 and R9 290X.


Power and Thermal Results

We tested the power utilization at the wall of the entire system. For full load power and temperature testing we used real gaming. The power supply used in testing is a Enermax MaxRevo 1350W. Total system wattage at idle without video card is 90W.

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At idle, the ASUS STRIX GTX 780 OC 6GB idled at the highest system wattage, despite the fans not spinning at all at idle. The idle temperature was also the highest, at 43c but remember the fans are not spinning at idle, and this is simply the temperature with the DirectCU II heatsink doing all the cooling passively.

When playing games for quite a while the fans turned on and kept the GPU quite cool compared to the reference GeForce GTX 780. We experienced the GPU reaching 73c, never getting near 80c which is very good considering the clock speed is even running higher on the ASUS STRIX GTX 780 OC 6GB. This shows that you don't have to worry about the GPU overheating while gaming, the fans will kick in and keep the GPU well cooled. The fan speed reached 50% at its maximum rotation while gaming.

Fans and Noise

The ASUS STRIX fans worked just as advertised. During idle, and during the first 30 seconds of gaming, the fans were completely off. It took about 30 seconds in all of our games for the fans to turn on. The fans started rotating slowly, and ramped up as needed. In the above table you can see the fans spun at a maximum of 50% of the maximum rotation speed and that kept the GPU cool enough at 73c.

Due to the fans spinning slowly, and only as needed, there wasn't any perceptible fan noise. Keep in mind we have this card on an open test bench right next to us. Even during maximum temperature while gaming, the fans remained very quiet. When we exited the game the fans turned completely off. The fans turned on in every game we played, but we noticed as the GPU cooled down slightly in parts of the game that weren't as demanding, the rotation did slow down as well. The fans technology on the STRIX is quite intelligent and ASUS has hit the nail on the head with fan usage, using it only when needed, and only at the RPMs needed at a given time. It's a smart idea, and it is implemented well.

The ASUS STRIX is designed to be "silent," and the way ASUS has engineered the fan controller it does just that. We never once noticed the cooling solution in our environment.