AMD Finally lifted the veil on the 31st generation Navi GPUs based on the new RDNA 3 architecture RX 7900 XTX And the RX 7900 XT, and open the dance in relation to the latest generation of high-end proposals. So AMD is naming the gauntlet of Nvidia, a new offering of RTX 40 series GPUs, even if the announcements of the past few hours seem to be in direct competition only with the RTX 4080, while the very premium segment covered by RTX 4090 – which we tested in our tests – still seems a bit far fetched.
But stop gossiping and let’s see what they bring to the market The first GPUs based on RDNA 3since the innovations under the hood – both in terms of power and engineering – are so numerous that they promise to make way for a very special generation.
RDNA 3 arrives and the first GPUs
So let’s start with the RDNA 3 architecture, which is the heart of both the new RX 7900 XTX and XT, but also of all subsequent GPUs of the home of Sunnyvale. Top news concernsArrival of the architectureChippleteEven in the world of graphics cards, It will thus inherit the new way of making and integrating chips that we’ve already seen on Ryzen CPUs.
Using the chiplet model allows the manufacturer to split a single chip into its various components and connect them through a high speed bus, able to ensure the complete absence of jams. In the case of RDNA 3 it is a bus from ben 5.3 TB/secno double contactUltraFusionWhich we find inside the Apple M1 Ultra SoC, which allows the two chips to communicate at a speed of 2.5 TB / s.
The advantage of this approach lies in the fact that each component can be manufactured with the best production process available for that category, so we find Use of 5 nm graphics chipwhile AMD has chosen to rely on a more mature solution for Memory chips, made at 6 nanometers. As announced, this new way of making the GPU will also bring additional performance benefits that can be exploited in the future by updating the drivers, but immediately you will be able to reach a higher level of performance.
And in terms of performance specifically, RDNA 3 appears to be keeping up with expectations even with regard to the rumors of the past few months, given that the design allows access UP TO 61 TFLOPS OF POWERversus a maximum of 23 RDNA 2. As usual, it must be emphasized that it is very difficult to compare themTFLOPS of different structuresso we’re not talking about 3 times the actual peak performance, but the jump is noteworthy.
To reach these levels of power, AMD has intervened in every aspect of the architecture, starting withSecond generation Infiniti Hideout Which results in a 2.7x improvement in bandwidth. We also find the same 2.7x in terms of performance in the field of AI, while getting to the good + 50% improvement in ray tracing performance.
All in one GPU that can contain up to 58 billion e . transistors Up to 24 GB of GDDR6 video memory. AMD has outspoken Choose not to support GDDR6X As the focus on new engineering is to maximize performance per wattThus, a higher consumption of GDDR6X will have a negative effect, without realizing huge advantages. This translates to having Two conventional 8-pin connectors With a maximum draw of 350 watts for the main 7000 series GPU.
In terms of performance per watt, the new RDNA 3 architecture allows for an increase of 53% over the RDNA 2 generation, with frequencies now reaching 2.3 GHz for shading. Finally, the 7000 series of GPUs are equipped with a connector DisplayPort 2.1capable of delivering a bandwidth of up to 53 GB/s allowing the screens to be managed in a . format 4K up to 480HzIn 8K up to 165 Hz And with a color profile a 12 bit.
Strength in gaming is not the only aspect that the new architecture is focused on, because RDNA 3 also brings with it news related to content creation, especially during broadcast. Then comes the new RDNA 3 . media drive to Simultaneous encoding and decoding in AV1 format (There is talk of an almost 7x increase in transcoding performance in 8K FFmpeg) and the new AMD SmartAccess Videoa system that allows you to improve transcoding performance in a 4K multi-stream, thanks to the possibility of Divide workload between Ryzen CPUs and Radeon 7000 . GPUs.
These are the general characteristics of the new architecture, but for now let’s see in detail how AMD’s proposal is expressed.
AMD RX 7900 XTX – Features and Performance
The top of the 7000 series is the RX 7900 XTX, a card that inherits the shape, factor and dimensions of the 6950 XT, but offers a more efficient and powerful package. Being the best solution, we are talking about a GPU with 58 billion transistors, with 96 CU at 2.3GHzAnd the 24 GB of GDDR6 memorymemory interface a 384 bit and up to 61 TFLOPS.
The power supply is entrusted to the above two 8-pin connectors and the card measures 287 mm, or about 2.5 slots. TDP from 350 watts All in all, the GPU delivers up to 1.7 times the performance of the RX 6950 XT at 4K resolution, as seen in graphics shared by AMD.
Turning to the stark numbers, Sunnyvale cited the results in1440 pOn some of the most popular esports titles, likeValorant, Overwatch 2, and Apex Legendsachieved by the new GPU in succession833, 600 and 300 fpsIf you choose to switch to a file4Kon the other hand, the same addresses successively arrive at704, 355, 295 fps; The results are very close to those at 1440p where the maximum value allowed in each game has been reached. Obviously, all without the trouble of FSR.
Moving instead to heavier titles, the RX takes the 7900 XTX home275 fps on Hitman 3And the 306 fps on Call of Duty Modern Warfare 2 And the 353 fps in F1 22all playing in it 4K with active FSR. If you enter a territory8 kilo – always thanks FSR Modern Warfare 2 hits 190 fps, Assassin’s Creed Valhalla hits 96 fps, Uncharted: Legacy of Thieves hits 73 fps and Death Stranding Director’s Cut hits 148 fps.
Finally, we found clear improvements as well in terms of performance in 4K at 60 fps with active ray tracingThe RX 7900 XTX brings with it a significant jump in performance over the RX 6950 XT. Cyberpunk 2077 goes from 42 to 62 fps, Dying Light 2 from 39 to 72 fps and Hitman 3 from 57 to 89 fps, scores that could increase further as upcoming drivers improve in the coming months.
AMD RX 7900 XT – What’s Changing
The new, top-of-the-line GPU is flanked by a slightly less powerful variant, which keeps all the main features of the XTX version unchanged, but with a few minor differences. In fact, the RX 7900 XT . offers 84 CU at 2 GHzAnd the 20 GB of GDDR6 memory by bus 320 bit and TDP of 300 watts.
So we expect a slightly lower performance that can only be decisive in the 8K region, while in 4K and 1440p there should not be such differences to create a clear gap between the two GPUs.
More news coming soon: FSR 3.0 and HYPR-RX
We conclude by mentioning other news coming over the next few months that AMD presented during the event. Among them, we find the long-awaited FSR 3.0is now almost ready and scheduled for launch in 2023. The Sunnyvale house promises significant improvements to this technology, which has the ambitious goal of Twice the frames per second that can be achieved with 2.0 Thanks to the use of technologyfluid motion tiresWhich should be pretty close to what we saw with DLSS 3. At the moment, it’s not clear if AMD will benefit from the improved AI performance of the RDNA 3 architecture or if it will continue to propose a technology that is compatible with each GPU, for the current version.
As it will come in 2023 AMD HYPR-RXnew Automatic system optimization system, able to set the best values to reduce latency and increase frame rate, all with just one click. At the moment, there are no more precise details about this new suite, so we will have to wait for its introduction.
Prices and availability
RDNA 3 GPUs are preparing to hit the market by the end of the year, more precisely From December 13, 2022. At the moment, there are no details regarding actual availability in Italy, but AMD has confirmed that the maximum price will be under $1,000. More specifically, let’s talk about $999 for the RX 7900 XTXwhile going down to $899 for the RX 7900 XT.
These are slightly lower prices than the last-generation launch prices, given that the RX 6950 XT was offered at $1,099, while the 6900 XT was offered at $999, but we’re obviously talking about reference models that will be accompanied by custom variants from individual manufacturers.