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Graphics Card Gigabyte GeForce GTX 680 Super Overclock Review

The launch of graphics solutions with WindForce 5X cooling system stirred a real boom in the market, giving a special tribute to the products developed by Gigabyte. The company launched two adapters this summer with the implementation of WindForce 5X system and now introduces one more card on its basis. Model Gigabyte GeForce GTX 680 Super Overclock can be called a paragon of efficient performance, overclocking and cooling activities.

Design

Graphics card GeForce GTX 680 Super Overclock features 295x120x64 mm dimensions and rather unusual design. Instead of common fans on the frontal board Gigabyte covered PCB and elements of cooling system by a metallic cover with decorative holes; the rear board is also covered by a metallic plate. The top board is only partially covered by the lid that hides a line of five fans, while the bottom board unveils a voluminous heatsink with heatpipes. The implemented circuit board is originally designed with a reinforced power supply subsystem.

This model is equipped with three sockets for fans, a couple of MIO sockets for the creation of various SLI configurations, and three types of video outputs: two DVI (one with Dual Link option), a single HDMI 1.4a, and a single DisplayPort 1.2. Standard 6- and 8-contact power supply sockets have been changed to a couple of 8-contact sockets to provide for sufficient current power on heightened frequencies. The card is powered by 8+3 phases scheme: 8 phases are alloted for GPU, three other phases – for memory and power chains.

Layout and Specifications

Graphics adapter from Gigabyte belongs to Super Overclock series and is built on high-quality components with the increased lifetime: Japanese capacitors, membranous capacitors Proadlizer NEC/TOKIN with low equivalent consecutive resistance. GPU power supply activity is monitored by 8-phase digital PWM controller ChiL CHL8318. The upper part of the board contains a group of J13 contacts which estimate working voltages: V-MEM, V-GPU, and V-PLL.

Gigabyte GeForce GTX 680 Super Overclock is furnished with two BIOS versions that can be switched by means of a dedicated button. The usual version goes with sutured high frequencies, while the extreme BIOS eliminates all current limitations and enhances GPU power immensely; this BIOS is intended at extreme overclocking at low temperatures.

Graphics core GK104 (A2) is the heart of this adapter. It is developed on Kepler architecture under 28 nm technological process. Its nominal clock frequency is increased from 1006 MHz to 1137 MHz which can grow to 1202 MHz on conditions of high loading. The company equips its card with 2GB of GDDR5 memory (K4G20325FD-FC03) with 256-bit interface, the nominal frequency of which has been increased from 6008 MHz to 6200 MHz. Other specifications of this model are listed below:
— number of transistors: 3540 m;
— number of current processors: 1536;
— number of texture blocks: 128;
— utmost power consumption in 3D mode: 210W;
— requirements to PSU: not less than 650W;
— employed interface: PCI Express x16.

WindForce 5X

Cooling system WindForce 5X is truly a feather in Gigabyte's cap. It consists of a large aluminum heatsink, nine heat pipes, heat camera, and five 40 mm fans. The heatsink is fixed to the PCB by six screws; its side panels are covered by tightly folded ribs. Four heat pipes embrace the heatsink from one side and the other five pipes – from the other side. The contact between GPU and cooler's bottom is realized via brand thermal compound.

The integrated fans, designed by Power Logic, are based on sliding bearing and are monitored by PWM technology. All five fans are installed reversely to blow off the hot air from the heatsink. On automatic regulation of fan operation when their rotational speed achieved 7260 rpm, GPU warmed up to 68 degrees. If switching the speed to maximum 9750 rpm, GPU temperature will lower to 54 degrees.
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  • 08 November 2012, 13:25
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