The NVIDIA GeForce GTX 1070 Founders Edition is the company's second GPU based on 16nm Pascal architecture and is positioned as a high-end, reference graphics card, slightly below the GTX 1080. It uses 8 gigabytes of GDDR5 memory, has three DisplayPort 1.4 connections and a single HDMI 2.0b port. The ASUS GeForce GTX 1070 ROG STRIX card features higher clock speeds and a different cooler.
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Pro Best cooling system of any GTX 1070
The Strix cooler Asus uses performs extremely well. Under light loads, the maximum temperature measured was 37 degrees Celsius. This is actually a bit on the higher side, but the cooler's fans don't turn on until the temperature reaches 60° C. This temperature threshold can be adjusted in the software if you wish. The cooler really shows its worth when looking at results under full load. The GTX 1070 ROG Strix achieves a maximum temperature of only 65 degrees Celsius, a very impressive feat. For comparison: a GTX 1070 Founders Edition heats up to 76 degrees Celsius, and the next coolest GTX 1070 is the Palit Premium edition which measures in at 70 degrees Celsius..
Better temperatures not only result in increased lifespan of the graphics card, but it also ensures throttling doesn't occur. Throttling is the process where the graphics card clocks itself down in order to remain cool, effectively sacrificing performance. The GTX 1070 is generally pretty good when it comes to avoiding throttling, but great cooling systems reduce the changes of throttling even more.
Pro Features adjustable RGB lightning
The exterior of the ASUS GeForce GTX 1070 ROG STRIX features some RGB lights and you can adjust the color of these lights via the included software package. This allows you to customize the look of the graphics card, which can be useful if your setup is built with a specific color scheme in mind.
Pro Ability to add two extra PWM fans
On the back of the STRIX card, there are two available PWM-connectors. If you attach additional fans to the back of the graphics card, they will regulate speed via PWM in addition to the STRIX cooler itself. This is a unique feature among GTX 1070 cards, which can help cool down the graphics card to prevent overheating or throttling (which could - in theory at least - allow for more overclocking).
Pro Very quiet operation
When they don't need to, the fans on the Asus GTX 1070 ROG STRIX won't spin at all and are thus completely inaudible: the card remains passive below 60 degrees Celsius. Under full load, a maximum sound production of 39 decibels (A) was measured. A reference GTX 1070 Founders Edition card also performs very well in this aspect however with 40 dBA, which means the difference isn't quite as extensive as with other GPU's.
Con Factory overclock isn't noticeable in practice
Although ASUS has increased the base clock speed of the GPU by 1.66% from 1506 to 1531 MHz, this higher clock speed only results in a negligible performance increases in gaming situations. Other GTX 1070 chips have higher clocks, which allow for better performance.
Con Only 2 DisplayPorts
To be more VR-friendly, Asus removed one of the DisplayPorts in favor of an additional HDMI port (both the Oculus Rift and HTC Vive require 2 HDMI ports).