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Posted by on Dec 24, 2012 in Hardware News |

NVIDIA Kepler vs AMD Graphics Core Next: CPU Unit

NVIDIA Kepler vs AMD Graphics Core Next: CPU Unit

From Hardware.Info comes a very, very interesting review in which testing two video cards based on the GPUs “GK104″ t GHz edition “XT2 Tahiti” with a total of 10 different microprocessors Intel and AMD.

10 microprocessors were used in various configurations from two to eight cores belonging to the present generation of APUs and CPUs from Intel and AMD (Pentium / Core i3/i5/i7/A4/A10/FX-6000/8000) to assess brake graphics performance (bottleneck) representing less powerful microprocessors to current generations of Nvidia graphics (Kepler) and AMD (Graphics Core Next.

Without further ado, here is a brief summary of performance in (Dirt: Showdown + Battlefield 3 + Crysis 2 + Max Payne 3) of both GPUs in the 10 CPUs:

NVIDIA Kepler vs AMD Graphics Core Next: CPU Unit image 2

On average, the AMD Radeon HD 7970 GPU Edition GHz shows a slightly higher yield than the Nvidia GeForce GTX 680 GPU, regardless of the power of the microprocessor used, but curiously observed that this difference in performance is much greater in the less powerful used : Pentium G680.

To make things interesting we will take the performance of both GPUs in combination with the Intel Core i7-3960X as base (100%) on which to base the percentage performance level GPUs with each microprocessor tested:

NVIDIA Kepler vs AMD Graphics Core Next: CPU Unit image 3

NVIDIA Kepler vs AMD Graphics Core Next: CPU Unit image 4

The lower performance CPU used (Pentium G680) is the biggest bottleneck for both GPUs, but to varying degrees: we have the GeForce GTX 680 loses an average of 25.61% yield, while the Radeon HD 7970 loses GHz Edition average 17.8% yield with the same CPU.

This lower yield loss with AMD GPU less powerful CPU is caused by the very peculiarities of Nvidia graphics architectures (for CPU scheduler / software) and AMD (hardware scheduler), which was demonstrable theoretically, but for first time is demonstrated by actual tests, although we believe that these differences could have been even higher if they had used more dependent games CPU performance as The Elder Scrolls V: Skyrim and StartCraft 2.

We recommend reviewing the full review Hardware.Info with individual tests used game.

Link: Radeon HD 7970 and GeForce GTX 680 tested with 10 CPUs (Hardware.Info)

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