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Gigabyte GeForce GTX 660 Ti Ultra Durable 2GB (GV-N66TOC-2GD)

Gigabyte’s product packaging still looks at you with a Decepticon eye. Next to it, you can see information about the graphics card model, cooling system, memory amount and factory overclocking.


Product features, system requirements and supported technologies are listed on the back. There’s a cardboard box inside the colorful external wrapper. It has two compartments, one for the graphics card and another for its accessories which include two power adapters, a CD with drivers and a brief installation guide.

The Gigabyte GeForce GTX 660 Ti Ultra Durable is manufactured in Taiwan and sells for $299. It is shipped with a 3-year warranty.

The Gigabyte card looks different from the two previous products thanks to its blue PCB and original cooler.


The cooler makes the card as long as 252 millimeters. Its height is 39 millimeters.

The card has the same video, SLI and power connectors as the previous two products:

The PCB looks interesting. Its increased length implies original design.

However, on closer inspection we can see that the Gigabyte uses the same PCB design with 4+2+1 power system as, for example, the above-described EVGA.

The empty-looking back part of the PCB is only populated by two power connectors, a fan connector and a couple of smaller components. Gigabyte claims that this model features Ultra Durable technology which means 5 to 10% lower GPU temperature, 10 to 30% higher overclocking potential and 30% lower power consumption compared to the reference GeForce GTX 660 Ti. We wonder how much of this marketing talk is true.

The GPU of the Gigabyte card was manufactured on the same week in early May as the ASUS’s.

Its base clock rate is increased from 915 to 1033 MHz and can be boosted up to 1111 MHz. We can also note that even though its GPU clock rate is not the highest, our monitoring tools report the Gigabyte to reach the highest GPU frequency during our tests, up to 1229 MHz.

The 2 gigabytes of GDDR5 memory are represented by the same Hynix chips as we've seen on the two previous products.

They have a 3D frequency of 6008 MHz, which is identical to the memory frequency of the reference GeForce GTX 660 Ti.

Now let’s take a look at the Gigabyte GeForce GTX 660 Ti Ultra Durable specs and check out its cooling system.

The original cooler Windforce 2X is a lite version of Gigabyte's Triangle Cool which can be seen on top-end graphics cards.

The Windforce 2X has a triple-section aluminum heatsink with two 8mm copper heat pipes and a light plastic frame with two 100mm fans. The fins are soldered to the pipes and to the base while the power system components are cooled by a separate copper plate which is part of the smaller heatsink section.

The speed of the fans is PWM-regulated in a range of 1200 to 2550 RPM (according to our monitoring data). The original maker of the fans, their bearing type and electrical parameters are not disclosed.

With the fans regulated automatically, the Windforce 2X is quite efficient, keeping GPU temperature below 68°C at peak load. The speed of the fans is only 1620 RPM at that.

Automatic fan mode

Maximum fan speed

At the maximum 2550 RPM the cooler keeps the temperature 8°C lower at 60°C.

When testing the overclocking potential of our Gigabyte GeForce GTX 660 Ti Ultra Durable, we managed to increase its GPU clock rate by 65 MHz, which is higher than with the previous two cards, yet still not impressive enough. The memory chips did better, accelerating by 1460 MHz, which is the highest result in this review.

The overclocked card worked at 1098/1176/7468 MHz:

According to our monitoring data, the GPU clock rate was 1293 MHz at peak load. This is yet another record among the graphics cards in this review.

The overclocked GPU grew hotter by 3°C while the fans rotated at the same speed.

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