Pictures of a video card that was definitely a big gun because of its size appeared on TomsHardware.
The HIS Radeon HD 7970 IceQ X2 graphics card was unveiled at Computex 2012, and Tom seems to have already acquired one of it. VGA is a real monster, its cooling takes up three slots. Because of the two HD 7970 chips, the performance can't be last, especially if we mention that the clock clock of the cores runs at 1000 MHz instead of the usual 1050 MHz, while at 1375 MHz instead of 1500 MHz. Stable operation is aided by a 16 + 2 phase power supply, which means 8 + 1 phases per graphics core.
The images are from Tom's Hardware.
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