Sadly doesn't translate to games according to GURU 3D. It's 3Dmark OC results.
On my 7900 XT the 10% OC translates to about 10% in games as well. 55 FPS stock, 60 FPS OC with Starfield at 4K Ultra and no upscaling. It's going to depend on the silicone lottery but 20% would be very much pie in the sky levels. 10% is more likely.
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