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RX 7900 XTX vs RX 6900 XT – is the upgrade worth it?

Who will reign supreme in the GPU card realm under AMD in the bout that sees the RX 7900 XTX vs the RX 6900 XT
Last Updated on March 14, 2024
Two different models of graphics cards, the RX 7900 XTX vs RX 6900 XT, are displayed against a split purple and orange background.
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With the release of AMD’s 7000 series cards, users start to analyze if it’s wise to upgrade or not. We’ll help you get to that realization by pitting the 7000-series flagship against its previous-gen rival: the RX 7900 XTX vs the RX 6900 XT. Let me tell you right away, the upgrade is certainly worth it. The 7900 XTX is the best AMD GPU, by a long shot.

According to AMD the RX 7900 XTX is “the most advanced graphics for gamers & creators.” This GPU was built utilizing the long-anticipated RDNA 3 architecture, which is supposed to double the previous-gen performance. The first aspect to notice is that this GPU should be able to handle 4K resolutions and beyond.

On the other hand, the RX 6900 XT was built under the RDNA 2 architecture and shows the world how the innovative AMD Infinity Cache can be used to the user’s advantage. This GPU was created to deliver ultra-high frame rates and “serious 4K resolution gaming.”

RX 7900 XTX vs 6900 XT specs comparison

The RDNA 3 architecture is a groundbreaking technology. It changed the way AMD’s GPUs deliver power. This new architecture comes packed with quite a lot of changes. It features ray tracing and AMD Infinity Cache, the same as the previous RDNA but on its 2nd generation, which makes it feel like a brand-new technology never before seen.

AMD knows its weak side compared to Nvidia is its AI-powered graphics. While Nvidia’s DLSS has been working perfectly, Team Red is still having some problems. Hence, it has included in its RDNA 3 architecture AI Acceleration, AMD Radiance Display™ Engine, and a new Chiplet Design.

This gives us an important differentiator right from the get-go: the RDNA 3 architecture has finally included a chipset design for the GPU. This type of design has been around in CPUs for a while but has yet to be added to graphics cards, and AMD has done it. It added a chipset design instead of the classic monolithic design to try to increase core speed, decrease production costs and improve overall performance. This change possibly doesn’t add too much to the performance but overall it would be hard to notice due to the high infinity cache the new GPU sports to compensate for this change.

 RX 7900 XTXRX 6900 XT
ArchitectureRDNA 3RDNA 2
Compute units9680
Ray accelerators9680
Peak Single Precision compute Performance61 TFLOPs23.04 TFLOPs
Stream Processors61445120
Shader engines6X
Game clock speed2300 MHz2015 MHz
Boost Clock speed2500 MHz2250 MHz
Peak Pixel Fill-RateUp to 480 GP/sUp to 288 GP/s
Transistor Count58 B26.8 B
Max Memory Size24 GB16 GB
Memory Speed20 Gbps16 Gbps
Memory BandwidthUp to 960 GB/sUp to 512 GB/s
TBP355 W300 W

PowerColor Radeon RX 6900 XT Red Devil 16GB

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The change in the design and node process allowed AMD to pack the RX 7900 XTX with almost double the features of the RX 6900 XT. The first difference to notice about these two GPUs is how many TFLOPS the 7900 XTX is able to achieve. The new graphics card is able to get to an enormous peak single precision compute performance of 61 Teraflops – that’s 3x higher than the 23.04 TFLOPs of the 6900 XT.

Attached to those TFLOPS are clock speeds. The RX 7900 XTX can achieve 2500 MHz, while the 6900 XT can only get to 2250 MHz. This might not look like much but the difference is huge when we factor in the almost double memory bandwidth on the more expensive card (960 GB/s vs 512 GB/s).

In conclusion, the RX 7900 XTX doubles the 6900 XT in almost every corner of specs. Team Red knew exactly where to look and how to improve the new gen. One single drawback might be its TBP (Typical Board Power). The new-gen GPU is consuming 55 more watts than the previous iteration and it’s already popular for running hotter than the 6900 XT and even than the 6950 XT.

RX 7900 XTX vs 6900 XT price

This comparison becomes more interesting when we start talking about pricing. Within these past few years, GPU pricing has been weird. We know now that mining and component shortages have done a lot of damage to these PC components. However, we’re starting to get out of that rabbit hole. Mining is slowly becoming obsolete, and the shortage is now something of the past.

Nonetheless, prices are still volatile. The RX 6900 XT was launched back in December 2020 at an MSRP of $999. Since then, the GPU price has been up and down to maintain today at an average of $1152.

Following the same path, the RX 7900 XTX was launched under the same MSRP of $999, making the 7900 XTX cheaper than the 6900 XT by almost $200. This would be amazing if we lived in a perfect world, but we don’t, so we have to consider availability, market behavior, and scalpers. Most likely, the brand-new GPU price will wobble a bit.

RX 7900 XTX vs 6900 XT Performance

As expected, the RX 7900 XTX beats in performance the 6900 XT. This new GPU makes use of all its advantages to deliver three-digit frames per second in every game it encounters.

According to AMD’s website, the new 7000-series is built to beat the flagship 6000-series GPU. AMD states that the user will “experience over 50% greater Performance-per-watt with AMD RDNA™ 3, compared against the previous generation AMD RDNA™ 2”.

This is a very bold statement. The fact that AMD can make this claim is because it has the numbers to back that up. The RX 7900 XTX is simply better than any other AMD GPU ever built. Our full RX 7900 XTX review goes over the performance in more detail.

The YouTube channel Mark PC released a video comparing the RX 7900 XTX against the RX 6900 XT and the 7900 XT. They did the benchmark over seven video games at the highest setting and provides the FPS alongside other helpful data. Below are the results:

4K UltraRX 7900 XTXRX 6900 XT
God of War  118 FPS77 FPS
Cyberpunk 207786 FPS40 FPS
Assassin’s Creed Valhalla108 FPS70 FPS
Watch Dogs Legion85 FPS53 FPS
Red Dead Redemption 2109 FPS51 FPS
Doom Eternal  310 FPS200 FPS
Horizon Zero Dawn124 FPS73 FPS

For the test, the YouTube creator used an Intel Core i-912900K and 2x16GB DDR4 3600MHz G.Skill. As we can see, the new GPU reaches a 30%-50% improvement in the games shown above. This is pretty close to what AMD has stated, and the truth is: we’re still waiting for additional benchmarks to more accurately compare these two GPUs. For now, it’s safe to say the RX 7900 XTX beats the floor with the RX 6900 XT performance for a similar price.

RX 7900 XTX vs 6900 XT Final thoughts

The RX 6900 XT is a strong GPU. It has shown itself capable of the most demanding 4K gaming and tasks. Since it was dropped two years ago, Team Red has been working on improving bit by bit every aspect of its performance, until it got to the behemoth that is the RX 7900 XTX. The enhancements in clock speed, cache memory, TFLOPs, and overall architecture are more than enough proof that this is the best GPU ever released from the brand.

Camilo is a contributor for PC Guide. He's been into tech since he was a teen, surfing through the web and local stores trying to find the cheapest way to play the latest Half-Life on his old Windows