Monday, July 15th 2013
Sapphire Radeon HD 7990 Atomic PCB and Cooling Solution Pictured
Sapphire's Radeon HD 7990 Atomic made its first appearance at Computex, early last month. While launch of the card itself is less than a few weeks away, pictures of its PCB and cooling solution made it to the web. Its PCB, pictured below, features a pair of 28 nm "Tahiti XT2" GPUs, a total of 6 GB of GDDR5 memory, and a PLX PEX8747 PCI-Express gen 3.0 x48 bridge chip, powered by a gargantuan 18-phase VRM that draws power from three 8-pin PCI-Express power connectors.
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.
Moving on, the cooling solution of the Radeon HD 7990 Atomic consists of an almost DIY-looking liquid cooling loop, consisting on a full-coverage block, a 120 x 240 mm radiator, and a reservoir+pump with coolant ports. A pair of 120 mm, 1,200 RPM fans are included with the radiator.
Source:
Expreview
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.
30 Comments on Sapphire Radeon HD 7990 Atomic PCB and Cooling Solution Pictured
No fat !:D
Good luck with driver support.
On that note. You'd think Sapphire would wait for the end of July driver update from AMD before releasing? Show the card in a good light?
only it looks like you will need to put the rad in the base of the case and not many support a 240 rad there :|
I'm curious as to why they chose to make the tubes come from the same side of the GPU instead of one above and one below, like a normal W/C GPU block. Just makes it more difficult to manage.
But I can't help feeling that this is too little, too late. I'm guessing this thing will be priced in 780 SLI territory and I just don't imagine it being competitive, even with the value of the H2O stuff factored in.
I've never had an issue with them, I figure I have been lucky so far.
Here's an example-
www.dslreports.com/forum/r20215228-nimrods-at-Sapphire-Forums
Not very nice at all about Americans, look at 8th post.
Seriously.
Feel free to edit the swearing out MODS, And I do apologize.
As a matter of fact, you'll find if you google Gr33n Gecko Sapphire, the records of him have mostly been removed, except for a few links to people complaining about him and his profile page.
Looks like he was removed. His last post was last year.