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A Radeon RX 570 had fewer CUs, lower clocks, and reduced memory, but could still be overclocked to match a stock RX 580.
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The Radeon RX 380 and RX 380X had 28 and 32 compute units, respectively, but worked very similarly. On previous GCN architectures, Team Red has always offered products based on the same processor with different CU counts which, at least at stock settings, offer incredibly limited performance improvements. The table above represents the challenge that AMD faced in providing a significant improvement for the RX 6900 XT.
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Supported titles enjoy a performance boost even higher than that achievable through overclocking (at least at 1440p and 1080p resolution). Long story short, Smart Access Memory not only works on our system but also offers the same boosts seen on Ryzen. The good news is that this ‘ReBAR’ is coming to Intel-based PCs as well, and in the course of this same article, you’ll find out what we’ve done on our Intel 10900K system.
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There are, however, other features that we wanted to test, such as Smart Access Memory, a technology that should take advantage of the new BAR PCI Express of Ryzen 5000 systems to allow the CPU to have full access to the GPU VRAM without going through the process of standard 256MB I / O buffer. The AMD hardware also boasts an ‘auto-overclock’ technology already in the control panel along with other options for customizing the experience (in order to obtain approximately 4/7% additional performance). based on power consumption, temperatures and other factors. While we know that the intended users of these products may want to get all the power out of this hardware, the reality is that both AMD and Nvidia are able to deliver the maximum performance of these new cards already with the clock boost, by adjusting the frequency. We won’t focus on overclocking in this review. The heatsink and chassis also look very similar even though AMD has raised the frequency limit of the RX 6900 XT to 3000MHz, more than the RX 6800 XT’s 2800MHz. Documents that have been provided to us by AMD for review purposes mention a high-end PCB with 16 energy levels, premium IT-170 materials and ‘superior thermal and acoustic performance’ – all in line with what was seen in the RX 6800 XT. However, at least on paper, all that the RX 6900 XT puts on the plate is an increase of about 11% in terms of computing power, without adding other specifications suitable for this type of premium product: the 16GB of GDDR5 remains even in this new model, the memory bandwidth is unchanged and the consumption is roughly the same. Intel has its own Extreme Editions, Nvidia has built the ‘Titan’ label around this concept, and while it offers more memory, more compute units, and an objectively better cooling system, the cost of the RTX 3090 is considerably higher. , without caring too much about giving real ‘value’ to the money requested.
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Obviously, the concept of premium components that are sold at exorbitant prices is nothing new: whether it’s CPU, GPU, motherboard or memory, just add higher frequencies, more shaders or a little extra RAM to justify the higher price. However, there may be more than just technical specs and that, combined with the fact that it is the absolute top of the range, could convince hardcore AMD fans to purchase. Basically, the only palpable difference between the 6800XT and the 6900 XT is that the new top of the range offers 80 CU (calculation units) compared to the 72 of the cheaper product. AMD’s RX 6900 XT completes the triptych of Team Red’s next-gen graphics cards and looks … the least interesting of all? In all specs (except one), the RX 6900 XT is identical to the RX 6800 XT, a GPU that costs over $ 350 less than the colossal $ 1000 price tag of the new card. Not only ‘Big Navi’ but also the largest Navi ever produced. AMD Radeon RX 6900 XT – review: is it really worth a thousand dollars?