In this quick article I wanted to give a quick update on the MSI GeForce GTX 680 Lightning versus Software Voltage control overclocking. For a while now lots of people have been eagerly awaiting an update of MSI AfterBurner in which software voltage control is unlocked. With this article I wanted to digg a little deeper and talk you though the challenges and difficulties of opening up this function.

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A couple of days ago we had a peek at the GeForce GTX 480 and how well it overclocked in combo with a little extra GPU voltage. The results have shown fabulous potential. Of course there's another card, the GeForce GTX 470. Last Friday we finished up an internal build of MSI's AfterBurner 1.6.0 beta 5 and here we where able to successfully implement voltage adjustment for the GTX 470 cards as well. With an additional voltage we where able to push the GPU close to 775 MHz on the core and roughly 1548 MHz on the shader processor domain.
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Yesterday we released an update of AfterBurner, we implemented and thus added voltage control for the 470/480 cards in MSI AfterBurner revision 1.6.0 beta 4 and upwards. Now as you guys probably know the default clock frequency for the GeForce GTX 480 is 700 MHz on the core, 1400 MHz on the shader domain and 3700 MHz on the memory. With an additional voltage we where able to push close to 850 MHz on the core. The first group of people that will really benefit from what we'll show you today are the people that opt a liquid cooled GeForce GTX 470 or 480. Well read the next couple of pages with a step-by-step guide and then we'll show some results based on our overclock experience.
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More and more vendors these days allow the end user to play around with GPU voltages in order to achieve higher stable overclocks. Our sample for example ships at reference (standard) 850MHz core clock frequency and 4,800MHz on the memory much like as any other Radeon HD 5770 1,024MB, but with the help of Voltage Tweaking we achieved 1,000MHz on the core clock and 5,620MHz on the memory fairly quickly.
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Today will test a triple memory kit from none other than OCZ technology, renowned for their speedy part we'll take a look at their OCZ DDR3 PC3-12800 Gold Low-Voltage Triple Channel memory. A 6GB kit, memory that is capable of 1600MHz DDR3 CL 8-8-8-24 (CAS-TRCD-TRP-TRAS) and comes with a lifetime warranty.
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