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Despite manufacturers' best attempts, enthusiasts and overclockers have always found a way to go to the factory. Although these are the costs involved in these stresses of stress, the gains are usually worth it.
Before we begin, please note that these mods will reduce the life of your hardware, but GPUs are often made to last for at least 4-5 years, and most of us get rid of them after just 2-3. So unless you plan to preserve your old hardware for your grandkids, these mods are quite safe. Still it's better to go through the guides and other users' experience before attempting, just to be on the safer side.
This testing was originally done by Gamersnexus, along with Buildzoid. They used a PowerColor RX Vega 56 Red Dragon and with the help of the help of registry were successful in increasing the power limit to + 242%. They compared the massively overclocked Vega 56 to a stock NVIDIA RTX 2070.
AMD Radeon RX Vega 56 NVIDIA RTX 2070 Beats: Benchmarks
Sniper Elite 4 (DX12 / 4K)
Initially, the RX Vega 56 is slower than both the GTX 1070 and the RTX 2070. But why do you push the power all the way up to 240%, it manages to beat both the GeForce cards and the Vega 64. It is still marginally slower than the GTX 1080, but considering the $ 100 price gap between them, I'd call that fair.
GTA V (4K / 1440p)
Rockstar's GTA is known to favor NVIDIA hardware and software. Before the overclock, the Vega 56 lags behind the GTX 980 Ti, but once the mod kicks in, the card goes all the way from 69 FPS to 79 FPS (at 1440p). However it fails to beat the RTX 2070 or even the GTX 1070 Ti. Not quite as effective in the previous test, but I suppose it's good enough.
Far Cry 5 (4K / 1440p)
Far Cry's Dunia engine is relatively vendor neutral, and is likely to see favorable results in this benchmark. Prior to the overclock, the RX Vega 56 levels with NVIDIA's GTX 1070 Ti, netting 41 and 74 FPS at 4K and 1440, respectively.
With the registry hack in place, the tables turn in the team with the Vega 56 exchanging blows with the GTX 1080, yielding 49 and 86 FPS at 4K and 1440p, respectively. This is a massive gain of approximately 20%, akin to what the Maxwell cards would have with BIOS mods would achieve.
Shadow of the Tomb Raider (DX12 / 4K / 1440)
Shadow of the Tomb Raider does not really play well with the Radeon RX Vega cards and the results are less exciting. Although, the Vega 56 does not have a decent overclock, it is not enough to match NVIDIA's fleet. Whether that is because this is an NVIDIA title or the game is shader bound is hard to say. At 4K, the Vega 56 is in the game, and the Vega 64 and as for the NVIDIA cards, they are just too damn fast in this game.
Conclusion: Not Bad At All
While this is not something I would recommend to everyone, it is worth a try if you have an old Vega 56 card that is giving you trouble in newer games. This performance has a 15-20% performance boost, propelling the RX Vega 56 ahead of all its rivals, including the RX Vega 64, the GTX 1070s and the RTX 2070 in some titles.
All in all, a decent bargain and it should allow you to squeeze another year out of your old Vega 56, and if you're lucky even more. Then again, if you were lucky enough (or rich), you'd have an RTX card or simply a faster GTX 10-series card.
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