amazon Radeon HD 7990 reviews
Design
The Radeon HD 7990 looks like a “bear” with a red, black puff with open-air design, a heatpipe radiator with eight high-quality copper heatpipes and three 80mm cooling fans. Speed reached 4,200rpm (rpm). The test results below show that the cooling system operates efficiently and the fan noise is quite high, affecting the surrounding environment.
The Radeon HD 7990 is a “2 in 1” graphics card, featuring the two most powerful Tahitian XT2 graphics core of the HD 7000 series to double the graphics processing power. Therefore, this graphics card requires two power lines + 12V PCIe 8 pins with a maximum capacity of 375W, the equivalent of graphics cards with GPU HD 6990. According to AMD recommendations, readers should choose the power supply. Capacity of 750W or more to ensure the power to meet the system.
Theoretically, installing and using an equivalent graphics card will be much simpler than the two CrossFire (or SLI) setup cards. The space inside the case is also neat and the heat dissipation efficiency. However, the problem of power consumption and heat emission of high-end graphics cards is always difficult to solve, especially with 2-in-1 graphics cards such as HD 7990.
Digital
As mentioned above, the HD 7990 is equipped with two new Tahiti XT2 graphics processing cores (GPUs), the new Graphics Core Graphics (GCN Architecture) architecture, the 28nm manufacturing process. Compared to the older VLIW4 graphics architecture of the Radeon HD 6900 series GPUs (codenamed Antilles), the new GCN architecture application improves GPU multi-threaded processing, which can better utilize GPU processing capabilities. Generate multiple pipelines at the same time and negligible effect on overall performance.
The power of the HD 7990 is roughly equivalent to two 7970 HD graphics cards running in CrossFire mode. The datasheet below shows Radeon HD 7990 with a total of 4,096 Stream Processing Units, 256 Texture Units, and 64 Color ROP Units. By default, each GPU runs at 950MHz and can accelerate to 1,000MHz, calculating 8.2 TeraFLOP (trillion floating point operations per second). One noteworthy detail is the HD 7990 is also equipped with up to 6GB GDDR5, clocked at 1.500MHz, bandwidth of 576GB / s; Much higher than Nvidia GTX 690’s 192GB / s bandwidth.
Technology, support features
The Radeon HD 7990 fully supports DirectX 11.1 and OpenGL 4.2 graphics libraries as well as optimized multi-threading, 24-bit antialiasing and 16-surface texture filtering, Enhanced Quality Anti-Aliasing (EQAA) And Morphological Anti-Aliasing (MLAA) enhance image antialiasing quality during post-construction and post-construction to bring users the most “sharp” images.
In addition, the HD 7990 inherits some of the unique technologies that AMD equips for the 7900 series HD GPUs such as AMD HD3D to meet the needs of 3D movie playback, AMD Eyefinity technology to pair 4 monitors At the same time to display images up to 4096×2160 (4K Support) resolution for gaming, movie playback or multiple applications. AMD PowerPlay smart power management technology to reduce power consumption in idle state.
In addition, the HD 7900 series GPU adds new AMD PowerTune technology, actively adjusting the TDP value (power consumption) to boost the GPU clock to a higher level, delivering the highest performance in the industry. Graphic applications or games are dubbed “hardware killers”.
where can you get a Radeon HD 7990 online
XFX Radeon HD 7990 950M Boost 6GB: Buy it now
ATI Radeon HD 7990 8 thermotube heatsink fan with 3 fans HD7990 Graphics fan: Buy it now
PowerColor AMD Radeon HD 7990 6GB GDDR5 2DVI/HDMI 2-Mini DisplayPort PCI-Express Video Card AX7990 6GBD5-2DHJ: Buy it now
VisionTek AMD Radeon 7990 6GB DDR5 PCI Express Graphics Card (900627): Buy it now
Performance evaluation
To test the power of the AMD Radeon HD 7990 graphics card, Test Lab uses a test configuration built on the GIGABYTE GA-X79-UP4 motherboard platform, Windows 8 Pro operating system and driver. Catalyst 13.152. In addition to the overall performance benchmarking tools 3DMark 11 and Heaven DX11 Benchmark 4.0, Test Lab also uses some DirectX 11 games such as DiRT 3, Alien Vs. Predator and Crysis 2 to test the graphics performance of the graphics card at 1280×720 pixel resolution (HD 720p) and 1920×1080 pixels (HD 1080p).
The results show that the Radeon HD 7990 demonstrates the power of multi-core graphics cards, which can conquer all current games with the highest graphics settings. Specifically in the multi-threaded graphics processing capability based on the 3DMark 11 Extreme tool, test configuration reached 5,728 points 3DMark and 5,316 GPU points. Similar to the 3DMark 2013 Fire Strike, the test configuration is 11,845 overall and the GPU is 14,539.
Similar to the DirectX 11 games are DiRT 3, Alien Vs. Predator 1.03 and Crysis 2, test configuration at 1920×1080 pixel resolution and graphics quality is pushed to Ultra level. The value of high-end graphics cards continues to be confirmed by the number of frames per second (fps) achieved. For example, with Alien Vs. Predator reached 127.7 fps while the “Street Dust” DiRT 3 also failed to block the power of HD 7990 with 194.7 fps. With Crysis 2, the lowest frame rate of the test configuration is 122.9 fps, which is four times higher than the standard 30 fps mark. Thus, the reader can peace of mind “play” game both in full HD resolution graphics quality is pushed to Ultra level without fear of lag.
