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@ 2013/07/02ZOTAC launched its premium GeForce GTX 770 Extreme Edition SKU in the Greater China region. The SKU outranks AMP!, and offers a suite of enthusiast features, such as a strong VRM, and better air cooling. It's not unlike the GTX 680 Extreme Edition or GTX 670 Extreme Edition. To begin with, the GTX 770 Extreme Edition features a slightly updated Gamer Force cooler, with higher aluminum fin density for the GPU heatsink, and a chunkier metal heatsink to cool the VRM. A back-plate cools components on the reverse side of the PCB.
The GTX 770 Extreme Edition features the same exact PCB as its predecessor, featuring a 12-phase (8+3+1) VRM, which makes use of noise-free chokes, a combination of conductive polymer and tantalum capacitors, three proadlizers (multi-phase capacitors for power conditioning), and International Rectifier PowIRstage driver-MOSFETs. A combination of CHiL CHL8318 (8-phase) and CHL 8214-03 (4-phase) chips are used to run the VRM. The main heatsink uses a copper base (not vapor-chamber) to make contact with the GPU, from which five 8 mm-thick nickel-plated copper heat pipes sprout out, transporting heat to the far-reaches of the heatsink. A pair of 92 mm PWM-controlled fans ventilate the heatsink, which are held by a sporty aluminum shroud.
The GTX 770 Extreme Edition features the same exact PCB as its predecessor, featuring a 12-phase (8+3+1) VRM, which makes use of noise-free chokes, a combination of conductive polymer and tantalum capacitors, three proadlizers (multi-phase capacitors for power conditioning), and International Rectifier PowIRstage driver-MOSFETs. A combination of CHiL CHL8318 (8-phase) and CHL 8214-03 (4-phase) chips are used to run the VRM. The main heatsink uses a copper base (not vapor-chamber) to make contact with the GPU, from which five 8 mm-thick nickel-plated copper heat pipes sprout out, transporting heat to the far-reaches of the heatsink. A pair of 92 mm PWM-controlled fans ventilate the heatsink, which are held by a sporty aluminum shroud.
