KFA2 GeForce GTX 670 EX OC Review

With the GTX 670 EX OC, KFA² sent us a graphics card from the upper class. Although it has been on the market for a few months, the GTX 670 from KFA² has exciting details that can make it stand out from the competition.

Given the very high price, the scope of delivery would also be significant. Unfortunately, we only received a bare test sample without any additional accessories and can, therefore, not provide any information about the scope of delivery. So first, let’s take a closer look at the subject.


The two 80 mm fans of KFA²’s dual-slot cooling solution immediately catch the eye. They should ensure quiet and efficient cooling.

The backplate impresses with a turquoise color and reminds us of the good old circuit boards. A unique feature is the ventilation slots, which should ensure better graphics card cooling. You can also set up a triple SLI system thanks to two SLI connectors.

Up to four monitors can be connected at the same time. Two DVI, one HDMI, and one display port are available for this.

KFA² prefers to play it safe regarding the power supply and equips the GTX 670 EX OC with a six-pin and an eight-pin PCIe power connector. This means that the graphics card has up to 300W available.

Four heat pipes ensure that the heat is transported away, which is done using the top-blow cooling principle. Most of the exhaust air is transported directly into the housing.

With a total length of 27.2 cm, the KFA² GTX 670 EX OC is quite long but still more than 2 cm shorter than our ASUS HD6950.


KFA² has given the GTX 670 EX OC a lot more clock. While the standard clock of commercially available GTX670 cards is 915MHz, our test sample clocks with an impressive 1006MHz (core), 1502MHz (memory), and 1085MHz in boost and is, therefore, even on the GTX680 level.

Practice / Benchmarks:

As usual, with graphics cards, installation is quick and easy. Only the two power cables are connected, and the benchmarks can start. The latest Nvidia Geforce driver, version 306.97, was used as the driver.

Our test system

3D Mark 11

Futuremark has been developing 3D benchmarks for years, which demand the latest graphics cards. The 3DMark 11 relies particularly on DirectX 11 benchmarks, whereby tessellation, depth of field, volumetric lighting, and direct computing are also used.

3D Mark Vantage

The previous version of 3D Mark 11 used DirectX 10 effects as the first benchmark. Here, too, current high-end systems still work up a sweat.

Unigine Heaven

Among other things, this benchmark tests the tessellation performance of graphics cards. Physically correct calculations and dynamic lighting effects ensure a meaningful test.


The massive world of Skyrim, with an unbelievable number of textures and effects, is currently one of the games with the highest demands on a gaming PC. We measured the FPS on a round trip through the white run.

Both water and fire effects, a viewpoint, houses, and people ensure suitable utilization of the graphics card. *Unfortunately, Vsync could not be disabled on the AMD Catalyst at the time, so the HD7950 could not display more than 60 FPS

Battlefield 3

Of course, the latest version of the multiplayer classic should not be missing from our test. The display of countless soldiers and people with realistic weapons and vehicles also demands a lot from the graphics card here.

Mafia II

The integrated benchmark in Mafia II shows various complex scenes and effects: just the right thing for a graphics card test.


KFA2 GeForce GTX 670 EX OC 2GB (67NPH6DV6KVZ)
As expected, the subject took the lead in the field. In none of the benchmarks did the GTX670 EX OC allow itself a weakness. On the contrary: the lead over the HD7950 is sometimes enormous. All in all, the performance of KFA² convinced us.

The KFA² GTX670 EX OC didn’t fall short in volume and cooling performance either. Even with Furmark under full load, the cooler was not audible from the system. Temperatures between 35°C (idle) and 72°C (full load) indicate adequate cooling.


With the GTX 670 EX OC, KFA² has brought a consistently convincing graphics card. The card shows no weaknesses in the benchmarks. The cooling performs its work as quietly as a whisper and cools effectively.

At a price of currently around €380, it’s not a bargain, but you get excellent performance in combination with a well-thought-out and quiet cooling recipe—a buy recommendation from our side.

The overclocking specialists from KFA² present a successful version of the GTX 670. Which card would you choose if you wanted to spend that much money?

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