The benefit of AMD PowerTune technology (with Boost) now comes to the SAPPHIRE HD 7950 3GB with Boost Edition graphics card. With PowerTune Dynamic Boost, you can enjoy faster clock speed of up to 925MHz which is 75MHz higher than the 850 MHz standard clock speed. Besides, the Radeon HD 7950 GPU offers graphics bliss with other advanced innovations including 28nm GCN (Graphic Core Next) architecture, Next Generation AMD Eyefinity Technology, AMD HD3D, AMD ZeroCore Power technology and more. SAPPHIRE's Dual-X thermal solution delivers optimal cooling performance and ensures stable performance even when battle heats up. With SAPPHIRE TriXX utility, you can tune the key parameters for maximum performance.
AMD PowerTune technology (with Boost)AMD PowerTune technology (with Boost) is a breakthrough technology that sets an entirely new direction for maximum performance at TDP. It allows the Radeon HD 7950 GPU to be designed with higher engine clock speeds of up to 925MHz (850MHz on standard settings) which can be applied on the broad set of applications that have thermal headroom. In HD 7900 series, AMD PowerTune technology enables intelligent power monitoring to enable higher clock speeds and better performance in your favorite games.
Dual-XSAPPHIRE's reputation for innovative excellence continues to grow with the introduction of the new dual-extractor technology - Dual-X. Dual-X is a highly efficient multi-heatpipe cooler with dual fans that provide quiet and very cool operation during normal operating conditions, and superb cooling performance even under extreme load.
TriXX UtilityTriXX allows you to monitor, tune and save different settings of key parameters for the graphics card. As a result, you can get the optimum performance from your card in any application.
New GCN Architecture for Leading DirectX 11 PerformanceAMD Radeon HD 7900 Series (codename Tahiti) boasts the world's first 28nm GPU architecture which is optimized for gaming and compute. The Radeon HD 7950 GPU features up to 28 Compute Units, each with 64 Vector Units for up to 1792Stream Processors, along with dual geometry engines and dual Asynchronous Compute Engines (ACE). Backed by 384-bit 3GB of GDDR5 memory, AMD Radeon HD 7950 with GCN Architecture enables a smooth gaming and computing experience like never before.
Next 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. With full support for 3GHz HDMI and DisplayPort 1.2 HBR2, the AMD Radeon HD 7950 is set to drive next generation displays at up to 4K resolution. The AMD Radeon HD 7950 is also backed by AMD’s open 3D initiative for stereo 3D gaming and Blu-ray 3D movies.
AMD ZeroCore Power TechnologyAMD ZeroCore Power technology found in the AMD Radeon HD 7950 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.
Pros: +Runs extremely cool and quiet. So far, my temps have never broken mid 60s. +Overclocks extremely well. On stock voltage (1.125), I am running at 1100 core / 1450 memory totally stable. I haven't tried going further but am sure that this card can go much further based on the results thus far. +12.11 drivers are great, absolutely dominates BF3. At my oc settings, my card is outperforming a stock GTX 680 in battlefield 3. I am getting an average of 100+ FPS at 1080p on auto settings. On ultra, I average between 70 to 80 fps. FPS measured using FRAPS. +Sapphire Trixx software is very user friendly for overclocking and for setting manual fan speed curves. +Within approximately 5% of the 7970 when at the same clock speeds according to Hexus .net +Can exceed stock 7970 ghz edition performance levels when overclocked properly (although a 7970 ghz edition can also oc) +Three free games that I would actually care to play +Bang for the buck +Sapphire is a top notch board maker. I was an Nvidia guy before, but even I knew that Sapphire was high quality and specifically looked for this brand when switching over. +Uses less power than a 7970 My settings in Trixx: GPU Clock: 1100 Memory Clock: 1450 Board Power Limit: 15% (20% is max)
Cons: Minor, but consistent with what some owners have noted, I on very rare occasions get a flicker of the screen when the card is in 2d mode. Note that this only appears to happen to monitors running at 120hz, so probably not an issue for most people, and it happens so infrequently (sometimes hours apart) that it doesn't bother me at all. Just be aware that this issues is not to be confused with signs of overclocking instability (so don't back off your overclock if you only get a minor flicker when in 2d mode and have no other issues, you are fine).
Overall Review: Overclocking is incredible with this card. I am amazed. I have never had a computer part that overclocked this dramatically with no hint of instability. I was originally in the market for a gtx 670 until I saw the latest benchmarks with these cards, especially when overclocked. When overclocked, the GTX 670 really seems to struggle to keep up per the benchmarks/reviews online (just look it up). Tip for overclocking: You will want to adjust your power slider upward incrementally while logging your clock speeds in GPUZ. At 1100 core / 1450 memory and the power slider at 10%, my card was throttling back the clock speed at times, which I could only tell when reviewing the GPUZ log. So, I adjusted to 15% and boom, no more throttling, and I still have an extra 5% of headroom before I would need to start voltage tweaking. As an example of how much throttling can hamper your overclock, my 3dMark11 performance score was at 7000 when at 10% power. It jumped to 9800+ when at 15% power. Another popular overclocking tool is MSI Afterburner for those looking for something other than Trixx. To monitor temps, core clocks, and memory speeds, voltage usage, etc., download GPUZ and click on the "Sensors" tab at the top. Then look toward the bottom of the screen and click "log to file". It will prompt you to save the log. Then, play a game or run a benchmark and observe the results. Reviewing the log is extremely helpful when finding optimal overclocking settings.