- By Shi Xiao Min @May 08, 2013
The XFX AMD
Radeon HD 7990 graphics card packs two 28nm Tahiti GPUs running at a base
clock speed of 950MHz with a boost speed of 1,000MHz. It offers incredible,
best-in-class entertainment experiences that every gamer deserves. Ready for
DirectX 11 and PCI Express 3.0, the XFX Radeon HD 7990 also comes with 6GB
of GDDR5 graphics memory (3GB per GPU), and can support up to five
simultaneous monitors with AMD's Eyefinity technology. The enthusiasts
gaming board exists to play games, and the XFX Radeon HD 7990 comes bundled
with eight free ones!
DISSIPATION AND MASSIVE HEATSINKThree whisper-quiet axial fans give you
ultimate airflow and circulation for extreme cooling while keeping your
graphics card optimally quiet. The massive full length heatsink spans the
entire graphics card from end to end with 5 huge copper heat-pipes and
direct copper-to-GPU design for ultimate heat dissipation and transfer.
THAN DOUBLETwo high performance Radeon GPUs merged into one graphics
card is more than double the performance, the speed - more than double
everything! 8.6 Billion transistors, 4096 stream processors and 8.2
teraflops of compute power!
GENERATION AMD EYEFINITY TECHNOLOGY & AMD HD3DAMD Eyefinity 2.0
features all-new support for stereo 3D, universal bezel compensation, brand
new display configurations and an expanded and more immersive field of view.
The AMD Radeon HD 7990 is also backed by AMD¡¯s open 3D initiative for stereo
3D gaming and Blu-ray 3D movies.
AMD POWERTUNE TECHNOLOGYDesigned with the most advanced power
management features, the AMD Radeon HD graphics card is equipped with the
intelligence to convert unused power headroom into extra performance by
dynamically controlling clock speeds, allowing gamers advanced performance
inside of the power envelope they specify.
POWERPLAY AND AMD ZEROCORE TECHNOLOGYAMD PowerPlay power management
technology automatically manages power consumption according to actual GPU
loading. AMD ZeroCore Power technology enables lower idle power than any
other currently available graphics card. With support for AMD CrossFire
technology, AMD ZeroCore Power eliminates wasted power, as well as
additional heat and noise from extra cards when you are not using them.
APP ACCELERATIONAMD App Acceleration lets you speed up applications and
enjoy brilliant video. Enjoy improved GPGPU performance and new features
including Video Codec Engine (VCE) in many top media, entertainment and
everyday productivity applications powered by the unprecedented 28nm GCN
Architecture. AMD Radeon HD 7990 fully supports DirectCompute 11 and OpenCL
1.2, enabling broad application support today and tomorrow.
- by Shi Xiao Min @May 08, 2013
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I was easily able to overclock the cores of each adapter to over 1050 mhz without much effort or accessing the PowerTune settings in Catalyst Control Centre. The micro-stutter has been fixed with DX11 with Catalyst 13.8 beta or later so this is also nice. The cooler even at 75% is extremely quiet and most of the noise is air turbulence, not fan whine. The big problem with this and any 7990 reference card, is that when any 3D apps are used, coil whine becomes exceptionally loud. Even inside a computer case, the whine is very prominent and distracting, as it changes tone with different loads. I didn't keep this card but as always NCIX was great and didn't charge me re-stocks. Thanks NCIX!
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