AMD RDNA 5 and UDNA: architecture, leaks and roadmap

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A major change is brewing in the PC and console ecosystem, and everyone is looking at the same thing: AMD's next graphics architectureAt this point, the mystery is part of the charm: some call it RDNA 5, others speak of UDNA, and AMD itself has preferred to avoid definitively naming it in its public events. What is clear, from the clues and official pieces they have already released, is that The focus will be on ray tracing, AI applied to rendering and a thorough review of the internal design.

RDNA 4 (the Radeon RX 9000 series) is already available and has been a transitional generation with useful improvements, such as a improved performance per watt and the jump to FSR 4But without any internal revolutions. That's precisely why the anticipation for its successor is even greater: AMD not only aims to reclaim the high end of the consumer market, it also wants to climb onto the ray tracing podium and establish common hardware bases that could encompass PCs, desktop consoles, and portable devices.

RDNA 5 or UDNA: why is there so much fuss about the name

The confusion with the name is not accidental; it is referred to as a unified architecture (UDNA) which would cover several fronts (PC, consoles, and accelerators). A very active source on specialized forums leaked that both the MI400 family and the RX 9000 series would share UDNA with GCN-inspired ALUsalso hinting that the “UDNA Gaming” variant would go into mass production in the 2026 second quarter and that PlayStation 6 would bet on that base, with CPU Zen 4 or Zen 5 in the equation. It's even suggested that Sony's next laptop will continue to rely on AMD.

A couple of months later, that same informant added more pieces: TSMC N3E (3 nm) for the node jump, a flagship with larger arrays and a 3D design for the Sony project, with the idea of increase cache (including 3D V-Cache)All of this fits with the trend of unifying designs between consoles and PCs, something we already see in the market with increasingly "laptop-like" hardware in living rooms.

Code names, families, and arrival schedule

Internally, the most stable clue suggests that RDNA 5 responds to GFX13 or GFX1250, the natural successor to GFX12 (RDNA 4). This is further embellished with nicknames inspired by Transformers: Alpha Trion, Ultra Magnus y Orion PaxAccording to the most consistent leaks, Alpha Trion would encompass the Discrete GPUsUltra Magnus would identify the SoC for Xbox and Orion Pax, the PlayStation 6 SoC.

There are reasons for so much label-flipping: prevent leaks with multiple aliases, cover projects that change direction during development and differentiate families and destinations (desktop, laptop, consoles). Generally speaking, the final names of each chip are expected to be clarified by 2026. with launches stretching towards 2027 in some ranges, although other sources place the first cards at 2026 late (between October and December).

Stated (and not so secret) goals: raster, ray tracing, AI, and path tracing

AMD's goals for this generation are crystal clear: improve rasterization performance Regarding RDNA 4 and the competition, to stand up to it (and, if possible, overcome) NVIDIA in ray tracing for the first time, extend AI to most rendering processes and make a solid bet on the path tracingThese are ambitious goals that align with the company's official roadmap, which prioritizes AI, the next-generation ray tracing and the leading manufacturing nodes.

In line with this, AMD's latest joint presentations with Sony regarding their next console have hinted at technologies they will use deep learning models to accelerate critical lighting and reconstruction tasks, reinforcing the idea that this AI layer will be transversal across both PC and consoles.

Architectural changes: nodes, compute units, and new silicon chips

Several sources agree on the leap to TSMC 3nm node (N3E)This should translate into greater efficiency and extra margins for increasing frequencies. At the heart of the design, there's a rumor gaining significant traction: double the shaders per compute unit. Go from 64 to 128 shaders per CU This would be a significant change, similar to what NVIDIA did with Ampere when scaling its SMs. Texture units and dedicated blocks for AI and ray tracing are also expected to evolve, although their number per CU might remain the same.

Along with this, AMD would introduce fourth generation ray tracing engines with a revamped design and hardware cross-platform acceleration (dubbed as Radiance Cores in recent documentation), in addition to third-generation AI unitsAn approach called Neural Arrays, designed to orchestrate multiple CUs as a logical block when tackling AI and deep learning workloads.

Ray tracing, lateral acceleration, and the NVIDIA challenge

In the field of ray tracing, AMD has pointed out something key: the hardware-accelerated lateral acceleration It's fundamental for large-scale beamforming and intersections. Intel already uses it in its RT cores, and several reputable sources indicate that RDNA 5 will take it to the next level. According to some analysts, this push could even surpass Blackwell (the current generation of NVIDIA) in RT and path tracing, although the duel that AMD has in mind would really be against Rubin (GeForce RTX 60), scheduled for 2026/2027, so each brand would be measuring its debut against different generations.

If anything has changed in recent years, it's that ray tracing is no longer "future-oriented": is presentIt allows for much more natural lighting with lower development costs and less disk space, but it requires significant optimization to balance VRAM consumption and performance at 1440p and 4K. That's why AMD is rethinking parts of the pipeline, starting with the dedicated hardware down to the management of geometry.

DGF: compressed geometry, lower BVH cost, and an eye on animation

GPUOpen (AMD's developer platform) already includes compatibility with Dense Geometry Format (DGF)DGF is a compressed container of finely tuned geometry for GPUs. Compared to past solutions like NVIDIA's DMM, DGF prioritizes represent real geometry in blocks instead of relying on displacement maps, and structures the models in meshlets compact systems that allow updating only what is necessary for each frame using compute shaders.

DGF's approach, when integrated with the ray tracing pipeline, shows promise less overload in BVH reconstructionreducing duplicate work, latency, and resource consumption. While DMM achieved higher compression ratios at the cost of load the CPU and losing compatibility with much of the current game geometry (which is why NVIDIA abandoned it in its RTX 50 series in favor of Mega Geometry), DGF seeks a balance: moderate compression, broad compatibility and lower demand on VRAM and CPU.

AMD has also indicated that some of what currently runs on compute units could migrate to dedicated hardware blocks in its next architecture, further accelerating animation and compression with DGF. This fits with the strategy of attacking the RT bottleneck from multiple angles: bandwidth savings, larger caches, and specialized tasks.

Memory: GDDR7 on top, LPDDR on the bottom, and plenty of cache in the middle

At the higher end of the catalog, solid rumors speak of GDDR7 to multiply the bandwidth compared to GDDR6, something key in many video cardsThis would be complemented by an increase in the maximum VRAM officially supported by top-of-the-range models, which could reach 24 to 32 GB graphics memory according to configurations.

The surprise lies in the entry-level and certain affordable mid-rangeSeveral discrete RDNA 5 chips have been described with LPDDR memory (LPDDR5X and LPDDR6). The reason? To reduce costs and support higher capacities with narrower busesTo make this viable without being overwhelmed by bandwidth, AMD would be relying on large L2 caches and in his well known infinity cachethus reducing dependence on external memory.

Chip family: from Alpha Trion to Navi 5, including AT0, AT2, AT3 and AT4

The aliases vary depending on the source, but there are recurring patterns. At the top, we would see a discrete GPU, associated with Alpha Trion, with 96 Compute Units and options of 384 to 512 bit busThis top-of-the-range model would return AMD to the flagship segment and prices above... 1.000 €, something the brand gave up with RDNA 4 to focus on mid-range and upper mid-ranges.

Another leak refers to that ship as AT0 (within Alpha Trion) and describes an internal organization in 8 shader matrices; each matrix would have 16 shader engines and each engine would integrate 6 CUsExact fit aside, the underlying idea is clear: a silicon topology aggressive and very parallel to scale well under rasterization and RT loads.

Other variations emerge below: AT2 with 40 CUs (mid-range with ambitions), AT3 with 24 CUs as a possible successor to RX 9060 XT type products, and an additional proposal called AT4 de 24 CUs with 10MB L2 y LPDDR5X 128-bit which could escalate to 12 or 24 GB of memory. At the top tier of LPDDR, a chip has been mentioned with 48 CUs, 20MB L2 y LPDDR6 384-bit, theoretically capable of handling gigantic amounts of memory (up to 512 GB), although in practice a much more reasonable range would be expected 16 to 32 GB.

Other sources summarize Navi 5X in three flavors: 96 CUs/384-bit at the top, 64 CUs/256-bit at a high level and 32 CUs/128-bit for entry. An increase is expected. 50% in CUs compared to the top-of-the-range RDNA 4 (64 CUs), with the bus of 384 bits as a new premium standard and the 128 bits Staying on its feet thanks to faster memories and higher density modules to easily surpass 8 GB.

Indicative specifications compared to current generations

To put these figures into context, the Radeon RX 7900 XTX (RDNA 3) offers 6.144 shaders, and the RX 9070 XT (RDNA 4) is around 4.096 shadersWith a CU of 128 shaders40 CUs would add up 5.120 shaders, outperforming both from the start. And with 96 CUs, the figure would take off to 12.288 shaderstheoretically pairing AMD with segments that, by schedule, would clash with what NVIDIA has at the top in Rubin.

The rumor of a model with 512-bit bus It brings extreme bandwidths back to the table (reminder: RTX 4090 and 5090 They have experimented with 512-bit, 24-bit, and 32-bit memory respectively). AMD already did this back in the day with the veteran R9 and dual RV770 chips, and could revive it to squeeze more out of the system. GDDR7 and stand up where it hurts the most.

FSR Redstone: AI for radiance, rays, rescaling, and frames

Alongside the hardware, AMD has showcased pieces of its AI-oriented software ecosystem under the umbrella of FSR RedstoneThe four legs that make the most noise are: one neural radiance cache that learns to predict indirect lighting; a AI-assisted beam generation that reduces noise with low sampling; a Super Resolution with deep learning to upscale more accurately; and a frame generation more precise and stable than that seen in FSR 3. It is assumed that these components will be available in RDNA 4 and RDNA 5, with more significant benefits in the new architecture due to the specific acceleration.

All of this complements the underlying objective: to achieve High FPS without requiring 20 or 24 GB of VRAM in gaming, and reduce the raw muscle needed in terms of the number of shaders thanks to AI and RT working with less noise, less latency, and better-packaged data.

Video outputs: HDMI 2.2 on the radar and DisplayPort up to date

Among the usual leakers, one of the most cited names claims that the next Radeon cards would incorporate HDMI 2.2 with modes of 64 and 80 Gbps (The 96 Gbps one would be excluded). There is no firm data on DisplayPort 2.1bBut AMD's track record with RX 9000 series (which already featured DP 2.1) suggests they will be state-of-the-art connectivityAs always, this will need to be confirmed when AMD officially details the releases.

Consoles and APUs: Gorgon, Medusa, and the role of PS6 and Xbox Next

On the CPU and APU front, AMD has charted a clear course. Before the big leap, it will arrive Gorgon in 2026 as a soft drink with Zen 5 and an NPU XDNA 2 capable of exceeding 55 TOPS in AI. Then, in 2027, they are expected Medusa Point y Medusa Halo, combining Zen 6/Zen 6c with a next-generation GPU (AMD itself refers to it as "RDNA 5" in this context) and the latest XDNA NPU. Rumors even suggest that Medusa Halo could integrate up to 24 CPU cores and 48 CUs In terms of graphics, it's an APU designed for powerful laptops and compact workstations.

On the console side, the collaboration with Sony suggests that PS6 It will utilize many of these technologies (refreshed RT, AI for lighting and reconstruction), with the added benefit of that 3D design geared towards add cacheFor Xbox Next, the pattern is repeated: Proprietary SoC with blocks of the new graphics architecture and new NPU. The UDNA unification fits here like a glove.

Dates, production windows, and product strategy

If we put all the pieces together, the most cited calendar places the mass production in Q2 of 2026 for the gaming family, with a public presentation to mid 2026 and commercial launch between October and December in a first wave. Other plans and segments could spill over towards 2027especially in consoles and APUs.

Regarding positioning, AMD would have reserved for the enthusiast range for this generation after the pause in RDNA 4. The idea would be to cover from top to bottom: from a flagship silicon (96 CUs, 384/512-bit and 24-32 GB GDDR7) to an affordable base supported by LPDDR + large cachesAnd meanwhile, those who don't want to wait have RX 9070 XT (RDNA 4, 16 GB) as a very capable current option in demanding games.

Official state of communication and the role of the community

At its “Financial Analyst Day”, AMD discussed the architecture that will succeed RDNA 4 without confirming a final name and highlighting two priorities: AI and ray tracing next generation. Furthermore, they focused on technologies already showcased alongside Sony and the construction of a new-generation ecosystem. FSR Redstone to structure these capabilities. Filters such as KeplerL2 They say the final name is not yet decided, hence the generic "new generation".

Meanwhile, the conversation is flowing in open communities such as r/AMDA subreddit run by fans and enthusiasts (not AMD), where rumors, tests, and news about Ryzen, Radeon, Zen 5/6, RDNA 4, and what's coming next are shared. In specialized media, experienced editorial teams—like those who write daily hardware reviews, guides, and comparisons—help to provide this information. technical context to leaks and roadmaps, separating the wheat from the chaff while information is still in motion.

With all of the above on the table —the alias Alpha Trion/Ultra Magnus/Orion Pax, the anchoring to GFX13/GFX1250, the bet on DGF and the new pieces by RT/IA—, the portrait that emerges is that of an architecture that wants to be solid from top to bottom and, above all, better at what costs the most today: high-level ray tracing, playable path tracing, real efficiency in VRAM and bandwidth, and AI software that adds quality without artifacts.

The starting price remains to be seen, as it has not yet been confirmed. If AMD maintains its usual approach, it will likely offer good value for moneyWith the exception of a flagship card that, based solely on its technical specifications, will compete with the most expensive graphics cards on the market. In any case, 2026 is starting off strong: NVIDIA and Intel are also making moves, and everything points to a fierce competition in all ranges.

Looking at the whole picture, RDNA 5/UDNA looks like AMD's most ambitious move in years: new node, CUs scaled to 128 shaders, Radiance Cores and lateral acceleration for RT, FSR Redstone growing in AI, DGF To optimize geometry and animation, GDDR7 memory at the top and LPDDR with a lot of cache to lower the cost of the entry-level range. Between 2026 and 2027 we'll know the full extent of each component, but the direction is clear and, if the leaks are accurate, the leap could be one that changes the conversation and rankings in gaming and consoles.