The memory might actually be able to physically overclock higher, but AMD has locked it to a maximum of just 17.2GHz versus 16GHz by default. However, the memory frequency is locked to a low 2150MHz (17.2GHz) maximum potential here. We can though increase the memory frequency and the maximum GPU frequency.

We cannot increase the GPU Voltage it tops out at 1175mV as the highest option. In addition, we enabled 100% fan speed to ensure the highest overclock possible.

Firstly, the Power Tuning limit lets us increase the Power Limit by 15%. In the screenshot above you can see what we achieved for our highest overclock on the AMD Radeon RX 6900 XT. In order to overclock the AMD Radeon RX 6900 XT, we have to use AMD’s Radeon Software as part of its Adrenalin driver, specifically the Manual Performance Tuning Controls it has. How to Overclock the AMD Radeon RX 6900 XT It has 16GB of GDDR6 onboard running at 16GHz on a 256-bit bus. It runs at a game clock of up to 2015MHz and a boost clock of up to 2250MHz. The Radeon RX 6900 XT based on NAVI 21 contains 80 Compute Units, 5,120 Stream Processors, 80 RT Cores, 128 ROPs, and 320 TMUs. The AMD Radeon RX 6900 XT stands as AMD’s current flagship video card, it is the best of the best that AMD has to offer for the gamer in performance currently. In this way, we can see how much of an uplift we get from overclocking, and how it matches flagship to flagship when it is overclocked. We’ll be comparing it with a GIGABYTE GeForce RTX 3090 GAMING OC video card and an AMD Radeon RX 6800 XT video card. We are going to use the same GPU comparison from our full review. We will benchmark it at 1440p, 4K, and with Ray Tracing and FSR in Godfall. In our review today we are going to overclock the AMD Radeon RX 6900 XT as high as we can and benchmark it in each game again. The AMD Radeon RX 6900 XT we have is a built-by AMD card and uses AMD’s standard build design for this video card. The one thing we didn’t do, was to overclock it yet to see how high we could push it. We compared it with a GeForce RTX 3090 and a Radeon RX 6800 XT. In our AMD Radeon RX 6900 XT video card review we evaluated performance in many games at 1440p, 4K, with Ray Tracing and FSR. How to Overclock the AMD Radeon RX 6900 XT.

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