Pošto 770 ima bolju naponsku i veći dozvoljen napon, moralo bi da bude na strani 770. Plus bolja memorija koja se daleko bolje ocuje.
In performance we found that the MSI N770 Lightning and MSI GTX 680 Lightning were identical in performance when overclocked to the maximum. When the clock speeds of the GPU are similar, then the performance is similar between the GTX 770 and GTX 680. It is after all the same GPU. Therefore it makes sense that if the clock speeds are similar, so will the performance be. We found this to be true. It works out just like you think it would. The only advantage the MSI N770 Lightning had over our "Reference" GeForce GTX 680 in our launch evaluation was the fact that it was operating at 1228MHz real-world frequency versus the stock GTX 680 boost frequency. That is what made it faster.
What about the memory you say? Well, the memory itself also does not lend too much of a difference in performance. All of today's games are shader-centric in terms of real world performance, meaning these benefit more from GPU clock speed. Today's games are not memory bandwidth limited, and the difference between 6.8GHz and 7.8GHz memory clocks are literally a few percent. Even at 7GHz, there isn't but a few percent difference over 6GHz memory on the reference GTX 680 or HD 7970 GHz Edition. It just doesn't make much of a meaningful real world gaming difference.
http://www.hardocp.com/article/2013/06/06/msi_n770_lightning_overclocking_review
MSI N770 Lightning Overclocking Review
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