NVIDIA GeForce GTX 670 Video Card Review

NVIDIA's next generation Kepler GPU continues with the launch of the GeForce GTX 670. This GPU is positioned to provide great performance at a price level $100 less than the GeForce GTX 680. Could this be the best performing $399 video card, besting even the Radeon HD 7950? We tell you all you need to know if $400 is your price range.

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Overclocking

Overclocking the GeForce GTX 670 is made simple by using EVGA's Precision Software. We've downloaded the latest version 3.0.2 and had no issues with it detecting our GTX 670.

Default Configuration

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This is the default configuration you will find the GeForce GTX 670 at. This sets the baseclock to 915MHz and boostclock to 980MHz. Memory is at 6GHz.


Maximum Overclock

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Interestingly, the Power Target slider has an overall lower value capability than the GeForce GTX 680. With GeForce GTX 680 video cards we can set the Power Target to 132%, but with the new GeForce GTX 670 it seems 122% is the maximum value. When we enabled this slider to 122% we did experience higher frequency values in games. However, the most benefit was had when we set the GPU Clock Offset.

We managed to get the GPU Clock Offset up to +150MHz. This resulted in a GPU clock of 1234MHz experience in all our games. There were a couple instances of the clock speed going up to 1241 and 1247MHz, but mostly it sustained at 1234MHz. That is a 35% overclock from the baseclock of 915MHz. We even had the fan set to Automatic for this maximum overclock; we didn't need to raise the fan speed. There seems to be a lot of overclocking headroom with the GTX 670 down the road with the proper tools and coolers.

On the memory side of things we managed to take it up to +200MHz for 6.4GHz memory clock frequency. In our testing, we saw more of an advantage overclocking the GPU frequency, than we did the memory. The memory was actually able to overclock higher, but doing so hurt our maximum GPU core clock headroom. We'd rather have as high of a core clock frequency as possible.

In our testing, we managed to hit 1254MHz core clock frequency. This frequency did work, for about 10 minutes of gaming, and then it would crash. Still, given that this is a reference video card, and we got 1254MHz even for 10 minutes bodes well for custom video card overclocking. We just got a brand new Galaxy GTX 670 custom video card in-house we can't wait to overclock. Obviously these will come with custom coolers and not the reference cooler we have seen here.


Overclocking Performance

Now we will compare apples-to-apples performance with our new overclock.

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In BF3 the overclock resulted in an almost 13% performance improvement! This kind of performance improvement can be felt in-game in certain areas, it certainly helped smooth out performance overall.

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In Batman we got an 11% performance improvement.

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In Skyrim we got an 8% performance improvement.


Overclocking Performance Compared to GTX 680

Since our overclock brought us improved performance, we also needed to compare it to GeForce GTX 680 and see if performance will come close.

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In BF3 the overclock of the GTX 670 brought it up and over the performance of GTX 680. That means you can get GTX 680 level performance from overclocking the GTX 670 in this game.

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In Batman the overclock also brought us up to GTX 680 performance.

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In this game, however, the overclock didn't quite get us up to GTX 680 performance, but it did close the gap between the 670 and 680 quite well.