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November 17, 2018 
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Sapphire Radeon HD 7990 Atomic gets pixellized

Posted on Monday, July 15 2013 @ 10:36:44 CEST by


TPU came across pictures of the Sapphire Radeon HD 7990 Atomic's PCB and watercooling solution. This card upcoming features two 28nm AMD Tahiti XT2 GPUs, a PLX PEX8747 PCI-Express gen 3.0 x48 bridge chip, 6GB GDDR5 and 18-phase VRM that draws power from three 8-pin PCIe power connectors. Cooling is provided by a sealed liquid cooling solution that features a 240mm radiator and a reservoir+pump with coolant ports. Pricing and availability is unknown.
Each GPU system hence gets a 6+2+1 phase power supply (Vcc+VDDCI+MVDD). The Vcc phases appear to consist of two 50A chokes per phase, and driver-MOSFETs; while the ancillary phases use more conventional LFPAK MOSFETs. Tantalum capacitors handle most electricals on this 12-layer PCB. The PCB features two sets of video BIOS for each GPU. Display outputs include six mini-DisplayPort connectors. The card can pair with any other Radeon HD 7900 series card using CrossFireX.
Sapphire Radeon HD 7990 Atomic



 



 

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