AMD Radeon RX 7900 XT Video Card Review

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Default GPU Frequency

With both NVIDIA and AMD GPUs, the GPU frequency is dynamic.  NVIDIA has GPU Boost, and AMD has its Game Clock and Boost Clock quoted frequencies.  Typically, GPUs today can exceed the “Boost Clock” dynamically.  We need to find out what the GPU frequency is while gaming.  To do this we will record the GPU clock frequency over time while playing a game.  We use Cyberpunk 2077 for this with a very long manual run-through at “Ultra” settings recording GPU-Z sensor data.

AMD Radeon RX 7900 XT Video Card Default GPU Frequency Graph

Note that the version of GPU-Z that we used, v2.51.0 does not currently support the new Radeon RX 7900 XTX GPU. Therefore, take these readings with a grain of salt, we aren’t entirely sure which GPU frequency domain it is reading, the front side clock or the shader clock.

According to GPU-Z, the frequency starts off at a very high 2695MHz but then drops quickly to between 2487MHz-2675MHz. Taking the exact average of all the clock frequency, we come up with an average clock speed of 2605MHz while gaming. Technically the Radeon RX 7900 XT has a Game Clock of 2000MHz and a Boost Clock of up to 2400MHz. Therefore, if these readings are correct, our made by AMD Radeon RX 7900 XT is clocking itself very high by default, well over the Boost Clock. This could be a product of the new 315W TDP, and that extra headroom on power allowing the clock frequency to boost higher. At an average of 2605MHz, the clock frequency is boosting higher than the 2547MHz average clock speed we experienced on the Radeon RX 7900 XTX.

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Gaming Performance
Power Efficiency
Build and Cooling
Price Value


We reviewed the AMD Radeon RX 7900 XT, putting it up against the competition at 4K gaming, 1440p gaming, and Ray Tracing at both resolutions, and FSR performance. We are impressed by the build, cooling, and efficiency of the video card. It packs a lot of performance into a power-efficient and cool package that can fit in any space and is an easy replacement for current video cards. Its raster performance is strong, but it does lack Ray Tracing oomph, we also were hoping for a little more uplift versus the previous generation. It has a more appealing price point than the competition, but we feel that its naming scheme and price point might be slightly mismatched, but overall it holds a very tight advantage in value versus the competition.
Brent Justice
Former managing editor of GPUs at HardOCP for 18 years, Brent Justice has been reviewing computer components since the late 90s, educated in the art and method of the computer hardware review, he brings experience, knowledge, and hands-on testing with a gamer-oriented and hardware enthusiast perspective. You can follow him on Twitter - @Brent_Justice You can sub to his YouTube channel - Justice Gaming You can check out his computer builds on KIT - @BrentJustice

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