We were also able to max out the fan speed to ensure the highest overclock. This will give us plenty of headroom and TDP for overclocking. We were able to increase it by +20% which is higher than normal.

We were happy to find that the Power Limit could be set very high on this video card.

This is our highest stable overclock shown below.įirstly note, that we are overclocking on the OC BIOS, with the OC BIOS selected. To overclock the SAPPHIRE NITRO+ AMD Radeon RX 6950 XT PURE video card we are using AMD Radeon Software Performance Tuning overclocking software. The OC BIOS has a real advantage in clock speed as well and will definitely give you a boost in performance for free without overclocking. This means either way the video card is operating well above the Boost Clock while gaming, giving you higher performance. Switch the BIOS into OC mode and that increases the frequency to end up around 2500-2520MHz, which is well above the OC BIOS Boost Clock. That’s well above the Boost Clock for the Primary BIOS. The default primary BIOS clock speed starts off around 2500MHz, but slowly drops to average out to around 2460MHz on average. The “Primary BIOS” is the blue line and the OC BIOS is the orange line. In the graph above, we are showing what both BIOS do in terms of real-world clock speed while gaming, so you can see the actual frequency and the difference between the BIOS. The “Secondary BIOS” also called the OC BIOS can be selected and sets the Boost Clock up to 2435MHz. The default BIOS, called the “Primary BIOS” is what the card will ship in, the Game Clock is set at 2162MHz and the Boost Clock is set at 2368MHz. We use Cyberpunk 2077 for this with a very long manual run-through at “Ultra” settings recording GPU-Z sensor data. To do this we will record the GPU clock frequency over time while playing a game. We need to find out what it actually runs at, so we can compare the benefit of overclocking. Typically, GPUs today can exceed the “Boost Clock” dynamically. NVIDIA has GPU Boost, and AMD has its same Clock and Boost Clock quoted frequencies. With both NVIDIA and AMD GPUs, the GPU frequency is dynamic. Microsoft Flight Sim 2020 Game of the Year Editionīefore we find the highest stable overclock, we need to find out what the default GPU clock speed of the video card is.Overclocking SAPPHIRE NITRO+ RX 6950 XT PURE.SAPPHIRE NITRO+ AMD Radeon RX 6950 XT PURE.

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