We're not going to spend a ton of time obsessing over how much an additional 100MHz or so will affect the performance of a GM204 GPU. We can get a quick assessment of the performance differences between these cards by using the built-in benchmark from Thief, which spits out a simple FPS average. If you want the full-on inside-the-second performance treatment, please go read my initial GeForce GTX 980 review. By the way, our test system config for this article was the same as the one we used for that review.
Out of the box, both of these cards offer a 5-10% performance increase over a stock-clocked GTX 980, depending on the scenario. The G1 Gaming is a bit faster than the Zotac AMP! Omega, thanks to its ~20MHz advantage in base and boost clock frequencies.
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