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ZOTAC GeForce GTX 680 Graphics Card SLI Performance Review

ZOTAC GeForce GTX 680 Graphics Card SLI Performance Review

ZOTAC GeForce GTX 680 SLI Graphics Card Review

Power, Temperatures and Noise

Make Custom Paper As with the Radeon 6900/7900 series and GTX 500 series the 600 series performs power management in a different way to older cards. In fact the GTX 680 even more so than the others which means we have changed the way we test power and temperature levels in our reviews. For idle power we list the full system use at the wall after sitting at the desktop with no activity for 5 minutes. Load power is the highest reading we saw for the full system when testing during this review. Temperatures are taken in the same way. Noise levels are taken after a period of prolonged gaming in a scenario which applied maximum load to the GPU.

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NVIDIA GeForce GTX 680 SLI 136w 428w 36/38°C 80/82°C
NVIDIA GeForce GTX 680 130w 258w 31°C 78°C
Reference Radeon HD 7970 129w 306w 39°C 75°C
Reference Radeon HD 7970 CF 130w 490w 45°C/N/A 80/76°C
GeForce GTX 580 OC 136w 351w 30°C 67°C

Essay Help Uk Looking at the results above we see that NVIDIA produce some impressive performance from their reference design with the card idle performance. Power use matches the 7970 and improves on the GTX 580. Temperatures are comparable with a custom 7970 using a dual fan cooler. At load the results only get better with the GTX 680 requiring nearly 100w less power than the GTX 580. It needs 50w less than a reference 7970 too and runs at a similar temperature.

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Product image Product image

Best Buy Experience Resume Shown above are two images. The first is PrecisionX tool which allows us to monitor and control the card. In the first image we can tweak the power available to the card as well as the core/memory speed offset to overclock, more on that shortly. In the second image we can see the graphs which show the power draw and speeds as we open and ran 3DMark 11. The three key results are the top items with the first line showing the power use of the card, the second the clock speed that the GTX 680 set itself to and the third our memory speed which varies less.

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Product image Product image Pay To Get Your Homework Done Taking the technology a step further we have the aforementioned power/speed controls. By increasing the power available to the card and the speed used as our GPU/Memory offset we can overclock the maximum speed of the card. In the first graph we have the power/speed lines shown for a Battlefield 3 session, the second graph is a continuation where we applied a 132% setting to power and approx. 100MHz on GPU and Memory. Following the change in settings the GPU speed registers as 1197MHz (rather than 1097MHz in graph1) and memory as 3110MHz compared to 3005MHz. Of course the fluctuation in the speeds will depend on the game played and how much power it requires.

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