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Design and Functionality

The GeForce GTX 580 SuperOverclock looks very stylish with its matte black casing that covers the entire face side of its PCB. It has three 92mm fans with pretty translucent impellers and a thick 8mm heat pipe at the top.

The PCB is 277 millimeters long. The cooler's casing doesn't go out of the PCB's limits as most other nonstandard cooling systems do. The other dimensions of the card are 110 and 39 millimeters.

The GeForce GTX 580 SuperOverclock is equipped with two DVI ports and one mini-HDMI output. There is also a vent grid in its mounting bracket.

You can also find two MIO connectors for SLI configurations, one 6-pin and one 8-pin power connectors in their usual locations.

 

Gigabyte recommends a 750-watt or better power supply for a computer with this graphics card. The company adds that the high-quality components of the GeForce GTX 580 SuperOverclock lower its power consumption by 8% compared to the reference GeForce GTX 580. Thus, the Gigabyte card is expected to draw no more than 264 watts notwithstanding its pre-overclocked GPU and memory frequencies.

The new card allowed us to easily remove its cooling system. The latter was fastened with only four screws.

There is an aluminum heatsink with a thermal pad on the power system components installed on the face side of the PCB.

Together with the NEC/Tokin Proadlizer film capacitors on the reverse side of the PCB, they make up a 12-phase power circuit with 10 phases for the GPU and 2 phases for the memory chips.

A BIOS selector button can be found in the bottom right of the PCB, next to the fan connector.

You can use it to choose between a regular operation mode (blue highlighting) and an accelerated one (red highlighting). The card's GPU and memory clock rates are increased in the latter mode. The GPU is marked as GF110-375-A1. It was manufactured on 40nm tech process on the 11th week of the current year.

The GeForce GTX 580 GPU incorporates 512 unified shader processors, 64 texture-mapping units, and 48 raster operators. In the regular operation mode the GPU is clocked at 772/1544 MHz, like on the reference card from Nvidia, but in the accelerated mode the frequencies are stepped up by 10.8% and equal 855/1710 MHz. The stable operation of the GPU at such high clock rates is ensured by selecting the best chips through Gigabyte's GPU Gauntlet program. The graphics card lowers its GPU frequencies to 51/101 MHz in 2D applications to save power.

Although there already exist versions of GeForce GTX 580 with 3 gigabytes of onboard memory, the Gigabyte GeForce GTX 580 SuperOverclock has a standard 1.5 gigabytes in 12 FCFBGA chips located on the face side of the PCB.

The chips are manufactured by Hynix Semiconductor. Their marking (H5GQ2H24AFR T2C) suggests that they work at a voltage of 1.5 volts and have a rated frequency of 5000 MHz. The card clocks them at 4100 MHz, though, which is a mere 2.4% higher than the memory frequency of the reference GeForce GTX 580. The frequency is set at 270 MHz for 2D applications.

Here are the parameters of the Gigabyte GeForce GTX 580 SuperOverclock in its two operation modes:

 
Normal mode (on the left) and enhanced mode (on the right)

 
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