AMD unleashes Radeon HD 7990: A dual-GPU graphics card beast - henryrocklairling1983
K dollars. That's how practically AMD anticipates information technology will cost you to acquire a video card packing two of its most powerful GPUs on a unshared dual-slot PCB. AMD has provided U.S.A with reference design hardware, with retail cards expected to follow by the end of the calendar month. So consider this a active preview of the Radeon HD 7990. We'll go throug with an authoritative review Eastern Samoa soon arsenic we get a card that people can in reality buy in.
The Radeon HD 7990 is essentially two Radeon HD 7970 cards melded into one. You might call it CrossFire along a card. Each 28nm GPU packs 4.3 one thousand million transistors (8.6 billion in absolute) and a total of 4096 pelt processors to deliver work out operation of a impressive 8.2 teraflops: That's 8.2 trillion floating-point operations per second. And each processor has a 384-minute interface to 3GB of GDDR5 memory (that's 6GB in total), so games with large-mouthed memory footprints perform extremely well on this card.
The wag is capable of supporting up to quint displays simultaneously, even if they don't support DisplayPort multi-cyclosis, thanks to the bearing of Little Jo Mini DisplayPort connections and uncomparable DVI embrasure. AMD's Eyefinity engineering can subscribe adequate six DisplayPort monitors (provided at to the lowest degree one supports multi-streaming), although IT's outside that you could run six high-resolution displays at once.
That's because the DisplayPort orthodox is capable of delivering maximum bandwidth of 21.6 Gbps. Four 1920-by-1200 displays with color depth of 30 bits per pel and a brush up rate of 60 frames per 2d would consume near of that bandwidth. And arsenic I discussed in my originally DisplayPort multi-cyclosis primer, playing games with more than troika monitors isn't the best know because information technology leaves a bezel in the middle of your view.
The rising king of the hill
With the Radeon HD 7990, AMD seizes the statute title of about powerful consumer telecasting card from Nvidia, which earned the title lone stopping point February when it shipped its GeForce GTX Heavyweight. That scorecard, which is based on a single GPU, is adequate to of delivering compute performance 4.5 teraflops, which was considered important at the time. Even in a tri-SLI configuration with three Titans in one system, you'd get "only" 13.5 teraflops. With two 7990s in Crossfire, you'd be swinging 16.4 teraflops.
We had an opportunity to bench mark a number of recent games on the Radeon HD 7990 and were impressed with the performance it delivered, peculiarly at very high resolutions. Our test work bench consisted of a 3.4GHz Intel Heart i7-2600K and 32GB of DDR3/1600 memory installed in an Asus P8Z77-V Pro/Thunderbolt motherboard. At resolution of 1920-by-1080 pixels—such as what you'd stimulate with a mainstream 23- or 34-inch presentation—the card delivered Ungraded Face-of at its Ultra prize scene at a whopping 110.2 frames per second.
Moving up to a more resource-hungry gritty, the Radeon HD 7990 proved capable of delivering Bioshock Infinite at 1920-by-1080 pixels and Ultra quality settings at 111.6 frames per sec. When we connected the PC to a 30-edge in board and cranked the resoluteness to 2560-away-1600 pixels, Bioshock frame rates dropped to a tranquil eminently playable 74.5 frames per second. And if you're interested in an immersive three-panel feel, AMD claims its card can drive home the game at Ultra quality and 5760-by-1080 resolution at 59.7 fps. (Note: AMD used a different CPU, motherboard, and memory configuration for its internal tests than we did.)
But can information technology play Crysis?
Because No discussion of video card benchmarking would be complete without mentioning Crysis, we benchmarked Crysis 3 at its Ultra planned at resolution of 1920×1080 pixels: The card delivered the game at 37.1 frames per s. And when we boosted the solving up to 2560-by-1600 pixels and played the game along a 30-inch panel, cast rates dropped to a still-playable 29 frames per second.
Origin PC Moving to imitative benchmarks, the Radeon HD 7990, produced the Heaven DirectX 11 benchmark at its Extremist preset and resolution of 1920-past-1080 pixels at 66 frames per second (a score of 1664), and at 2560-by-1600 resolution at 38 Federal Protective Service (a score of 972). The card's 3DMark DirectX benchmark wads were 138073 for Frappe Storm (which is limited to a Direct3D 9 feature set and is therefore the least demanding 3DMark test), 23314 for Cloud Logic gate (which is limited to a Direct3D 10 feature lay), 10707 for Fire Strike (a full DX 11 benchmark), and 5756 for Open fire Strike Extreme (a timber preset designed for examination multi-GPU systems).
We would take up preferred to written report our execution findings in comparison with Nvidia's Titan video card, just Nvidia didn't provide one in fourth dimension for our deadline. We trust to be able to publish comparative numbers supported retail samples of both cards.
As I said at the apical of this story, AMD says retail Radeon HD 7990 boards won't be easy for another distich of weeks. But literally moments before I filed this story, I learned that dress shop PC producer Origin PC will be offering the 7990 as an option in its Genesis full-tower desktops, Millennium mid-towers, and Chronos small-constitute-factor systems. Other shops specializing in high-end systems are convinced to follow.
Nvidia, the ball is in your court!
Editor's Note: If you're place off by the Radeon HD 7990's price tag, you should read this story.
Source: https://www.pcworld.com/article/451484/amd-unleashes-radeon-hd-7990-a-dual-gpu-graphics-card-beast.html
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