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As both are processed in a 28 nm lithography, this is certainly impressive.
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The manufacturer promises double the performance of the GeForce GTX 680M in this regard. Nvidia increased neither the bus size nor the clock rate, but instead integrated larger L1 and L2 caches and better compression algorithms to increase effective bandwidth. Together with further optimizations, the GM204 should perform about 35 to 40 percent better than its Kepler GK104 predecessor with the same number of ALUs.Ĭhanges in the memory interface have been primarily to increase energy efficiency. For example, Nvidia restructured the streaming multi processors (SMM) in Maxwell to contain only 128 shader units and 8 TMUs (compared to 192 shader units and 16 TMUs in Kepler). Is this a bad omen for performance? No: The new GPUs should still benefit from their essentially revised architecture. On paper, the specs appear to be rather modest compared to the previous GeForce GTX 880M and 870M: Although the clock rates of the GTX 900M series are sightly higher, the activate shader units remain unchanged or even slightly lower in the case of the GTX 970M.
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