AMD Radeon RX 7900 XT and 7900 XTX Review: Faster, but Is It Enough? Reply hazy, try again. By Orbit Brain December 12, 2022 0 219 views AMD’s newest top-end, next-gen gaming GPUs, that are based mostly on its new RDNA Three structure, present marked enchancment during the last era. However the $899 Radeon RX 7900 XT and $999 Radeon RX 7900 XTX might solely stand out for the time being as a result of they’re cheaper than Nvidia’s newest top-end fashions, the GeForce RTX 4080 and 4090. And the XTX solely often hits the identical degree of efficiency in 4K because the RTX 4080 (or in some circumstances the RTX 3080 Ti). That value hole appears much more engaging in actuality than on paper, nonetheless, as a result of Nvidia’s RTX 4080 is not promoting at its nominal value of $1,200. Playing cards at that value aren’t in inventory, with many of the obtainable fashions operating nearer to $1,500 or extra. However, we can’t know what value AMD’s RX 7900 playing cards will decide on in actuality till they have been out some time, making a price-to-performance comparability tougher. If the hole sticks at $500, then dialing again your settings with the intention to get “adequate” 4K efficiency with the XTX within the video games the place it lags could also be price it. Each playing cards can deal with 4K 1440p maxed out with ray tracing fairly nicely. However till we see the value and efficiency of no matter Nvidia turns its “unlaunched” lower-end mannequin of the RTX 4080 into, it is arduous to find out the relative worth of the 7900 XT for 4K and even 1440p. AMD Radeon RX 7900 XTLikeDisplayPort 2.1 helpUSB-C connectorDo not LikeLarge for its efficiency degreeDisappointing raytracing efficiencySome driver pointsNo less than the 2 AMD-branded fashions are extra comparable than they’re totally different. They’ve totally different specs and due to this fact totally different ranges of efficiency, with concomitant bodily variations to help that. Third-party playing cards will seemingly have much more variations.The XTX does have an additional temperature sensor for monitoring the air consumption temperature of the case, which is meant to facilitate dynamic energy allocation based mostly on cooling. AMD hasn’t but made the information collected by the sensor obtainable for anybody to make use of, although. Each playing cards are comparatively massive and heavy. The truth is, the XTX is the primary card I’ve tried to put in the place I’ve fearful it’d do some harm to the slot earlier than I acquired it screwed in. It was high-quality as soon as locked in, although.Though they’ll work with eight-pin energy connectors and match into the identical slot widths as earlier than, the playing cards are increased than their predecessors, rising 5.Three inches (135 millimeters) above the motherboard (in comparison with 4.7 in. or 120 mm for the RX 6950 XT). So relying in your case dimension, they could be a comfortable match. They do retain the USB-C port, which I like since desktops by no means have sufficient of them. However for those who want a 3rd full-size DisplayPort connector, you will have to affix crew Nvidia.AMD Radeon RX 7900 XTXLikeDisplayPort 2.1 helpUSB-C connectorDo not LikeLarge for its efficiency degree and really heavyDisappointing ray tracing efficiencySome driver pointsRDNA Three and efficiencyAmongst different issues, RDNA Three provides help for DisplayPort 2.1, which has the mandatory bandwidth to help 165Hz at 8K and 12 bits per shade (up from 10 bits) for HDR, and to allow full gamut protection of Rec.2020, or as much as 480Hz in 4K. That is a hyperlink bandwidth of as much as 54Gbps, up from 20Gbps in DP 1.4a, which Nvidia’s playing cards nonetheless use. I can not think about making an attempt to play in 8K with one in every of these, however extra bandwidth for HDR is at all times welcome.RDNA Three structure improves on RDNA 2 in a number of methods. It is the primary GPU constructed from chiplets, the modular constructing blocks of recent processor design. That enables AMD to make use of totally different course of sizes on the identical die, on this case, a 5nm graphics core and 6nm reminiscence cache die. This could theoretically consequence within the capacity to optimize the efficiency of the 2 individually, to squeeze in additional energy or pace the place it does probably the most good, and finally match a greater processor in the identical house and energy envelope as earlier fashions.It additionally allows AMD so as to add devoted AI acceleration and improved raytracing accelerators — sadly, not sufficient to catch as much as Nvidia’s RTX and Tensor cores — and to decouple the reminiscence clock speeds from the compute unit speeds to assist preserve energy draw. AMD says the GPU will get higher DirectX raytracing efficiency, and it does. However AMD continues to noticeably lag Nvidia on this respect. Neither card appears quick sufficient for 4K with maxed-out ray tracing just like the RTX 4080, a lot much less the RTX 4090. The XTX does match the RTX 4080 in 4K on some video games with out ray tracing, however for probably the most half, it varies throughout video games and graphics purposes. While you stick one in every of these playing cards right into a late-generation AMD-based motherboard, SmartAccess Video joins the corporate’s different “sensible” applied sciences, which embody Good Entry Reminiscence. On this case, when you may have a system outfitted with a Ryzen 7000 CPU and RX 7000 GPU, it could possibly distribute encoding and decoding duties between the 2 for higher efficiency. (My present testbed is Intel. I am constructing out a further AMD testbed, nevertheless it’s not but prepared for benchmarking duties.)It is potential that AMD’s subsequent era of its upscaling and efficiency optimization know-how, FidelityFX Tremendous Decision 3, will bump both or each the GPUs over the efficiency line with out dropping a lot element, however that will not be obtainable for some time. FSR 2.2 has barely arrived — it is solely obtainable in two video games to date, Forza Horizon 5 and Want for Pace Unbound — and I have not been overly impressed with FSR 2.1 once I’ve tried it. In Cyberpunk 2077, for instance, except I dropped the settings right down to Balanced, I acquired no important efficiency enhancements. Even then it seemed softer than I count on from 4K. Radeon Tremendous Decision, AMD’s in-driver equal that does not require developer help, appeared to randomly fail to kick in, or at the least fail to point it had, making it arduous to guage.One other still-to-come Adrenalin driver functionality is Hyper-RX mode, a one-click optimizer for efficiency and latency that takes under consideration all of the settings you’d usually should search out and tweak individually. That functionality is due in June, and it’d make a notable distinction, however I solely often noticed a marked enchancment utilizing Rage mode, its present computerized overclocking function.I additionally encountered some sort rendering points in Microsoft Phrase and Outlook (though it is in all probability the identical bug for each), with characters disappearing and reappearing as I typed subsequent letters. Your mileage might fluctuate, nevertheless it’s unbelievably annoying for those who encounter it and use these purposes loads.It is arduous to fit the AMD Radeon RX 7900 playing cards into any specific advice area of interest, at the least till we have got extra info on upcoming rivals, not solely from Nvidia, however from AMD’s personal line. So like a Magic eight Ball I am pressured to decide on “Can not predict now.” Relative efficiency of latest GPUs Orbit Brainhttp://orbitbrain.com/ Orbit Brain is the senior science writer and technology expert. 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