Amd radeon 6900 xt
That's unlike Nvidia's dual RT Core and Tensor Core approach with Ampere, which divvies up denoising to the AI-inference accelerating Tensor Cores. The remaining steps are carried out on the traditional shader units within the GPU. These blocks are specifically designed to accelerate the BVH (bounding volume hierarchy) traversal step, which would usually be a far too compute-heavy step for a GPU without acceleration, as we've seen with 16-series and 10-series ray tracing on older generation Nvidia GPUs. There's one Ray Accelerator for every CU, and so the RX 6900 XT comes with the most ray tracing silicon of the lot at 80. These Ray Accelerators are dedicated ray-tracing hardware acceleration blocks fused next to the traditional rendering pipeline. Perhaps the most noteworthy function added with RDNA 2 is ray tracing capability, however, made possible by the inclusion of AMD's Ray Accelerators. Yet it is still plenty capable of managing the heat produced by that 519 mm2 GPU, running slightly hotter than the RX 6800 XT under load at 74☌, to the second-tier card's 68☌. That's one way that the RX 6900 XT has the RTX 3090 immediately beat, too, it's nowhere near as huge.
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For now, however, the RX 6900 XT will only be available in reference garb, the exact same heatsink and cooler design found on the RX 6800 XT. That and the binning, of course.Īnd yes, that is confirmation that there will be third-party models of the RX 6900 XT. That, AMD says, is the key to maintaining similar wattage to the lower-spec model while maintaining greater performance. There's also a minimum VRM power delivery requirement for all RX 6900 XT graphics cards, with the reference AMD model offering 16-phase VRM power delivery. A binning process ensures the Navi 21 GPU within the RX 6900 XT is one of the best samples out of TSMC's 7nm fabs, and each one has been carefully selected for its ability to meet performance requirements while retaining power efficiency. To enable such a chip to operate within the same 300W TGP as the RX 6800 XT, AMD is employing a handful of other optimisations for every Navi 21 GPU destined for the RX 6900 XT. Even with a high core count and TGP in line with the RX 6800 XT, the RX 6900 XT easily breaches 2.2GHz clocks under load. If you can get your hands on one, you'll be gifted an incredibly well thought-out architecture, with enhancements to clocks and power delivery ensuring the core GPU is running like a well-oiled machine. We suspect the launch of the RX 6900 XT to go much the same way, if not be more sparsely available as most high-performance GPUs tend to be manufactured at lower quantities. Both the RX 6800 XT and its little sibling, the $579 RX 6800, are largely unavailable right now, however. The RX 6900 XT is priced at $999, whereas the RX 6800 XT is available (if you can find one in stock) for $649. That makes for a total of 5,120 stream processors-an 11 percent increase over the RX 6800 XT. The same Navi 21 GPU resides within the Radeon RX 6900 XT as the two RX 6800-series graphics cards we've already reviewed, meaning you're getting an identical, and very effective, dual compute unit configuration that's tailor-made for gaming-albeit on a slightly larger scale with the 80 CU RX 6900 XT. There are a lot of improvements over the first generation RDNA gaming architecture to talk about, which likely demands its own deep-dive, but for now, let's focus on the specifics of the RX 6900 XT's implementation.
![amd radeon 6900 xt amd radeon 6900 xt](https://www.igorslab.de/wp-content/uploads/2020/12/AMD-RX-6900-XT-GPU-Z.jpg)
![amd radeon 6900 xt amd radeon 6900 xt](https://technoburst.com/wp-content/uploads/2020/11/Ryzen-9-5950X-AMD-Radeon-RX-6900-XT-Under-4000.jpg)
As I mentioned previously, if you want a more detailed rundown of AMD's brand new RDNA 2 architecture, you need only look to our RX 6800 XT review's architecture section.