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Will RDNA 3 be PCIe 5?

With the launch on the horizon, you might have just a few questions in regards to the upcoming RDNA 3 playing cards

Up to date: Nov 2, 2022 12:03 pm

The yr 2020 was an thrilling one for consoles and PCs alike. We obtained the eagerly anticipated next-gen consoles from Xbox and Sony along with brand-new CPU and GPU releases from AMD and NVIDIA.

Learn now: RTX 4090 stock tracker

These variations noticed appreciable efficiency will increase over their predecessors, primarily as a result of TSMC and Samsung switched to a smaller (7nm) manufacturing course of. AMD intends to base its RDNA 3 and Zen 4 structure on the TSMC-developed 5nm know-how. Consequently, now we have excessive hopes for elevated efficiency.

We hope a brand new technology of RDNA structure will probably be produced utilizing TSMC’s 5nm manufacturing know-how. The overall variety of streaming processors is 12288 with 6 Shader Engines and simply 48 WGPs, which is considerably fewer than what was beforehand talked about in leaks.

RX 7900 xtx

Nonetheless, that’s twice as many cores because the RX 6900 XT (5120 SPs). A couple of studies have been making the rounds that Navi 31 might function a TDP of 450W, however nothing has been confirmed.

In keeping with Robert Hallock, the PCIe model is far much less vital for GPUs than for storage, which is why AMD is offering PCIe 5 with a number of choices relying on the chipset.

All chipset variations embrace two slots, however PCIe 5 will not be required for GPUs except they’re extraordinarily costly. Because of the capacity to transmit information seamlessly, DirectStorage video games will function way more detailed worlds and therefore want rather more bandwidth.

The efficiency will probably be extra negatively impacted as a result of they may use it throughout gaming reasonably than simply when a stage is loaded. Nevertheless, the GPU gained’t be the bottleneck (for x16 playing cards) with PCIe 4.0 as a result of PCIe 5.0 x4 has the identical bandwidth as PCIe 3.0 x16.

On November 3, 2022, AMD is anticipated to webcast the introduction of not less than a few of its RDNA 3 graphic playing cards. Though there’s little info out there but, latest leaks and studies point out that the enterprise will reveal three GPUs at its occasion.

Will RDNA 3 have ray tracing? Will it’s higher

There isn’t any doubt that upcoming AMD RDNA 3 graphics playing cards will carry out higher than its present technology Radeon equivalents. Nonetheless, workforce pink retains quiet about how a lot of an improve we will anticipate.

These new RDNA 3 architecture-based graphics playing cards might have greater than twice the ray tracing efficiency of their forerunners. In keeping with reliable {hardware} leaker Greymon55, the brand new structure also needs to enhance body charges in customary rasterization by an element of “2X.”

No matter whether or not these claims are compared to the Radeon 6950 XT or 6900 XT, they characterize a exceptional potential enchancment. The Nvidia RTX 4000 series is the place this potential RDNA 3 flagship will shine the brightest.

Though the aim of those “elevated ray tracing capabilities” is unknown, it needs to be clear that the next-generation AMD RDNA 3-based Radeon RX 7000 sequence GPUs could have greater than sufficient ray tracing efficiency and new (and improved) options. NVIDIA is the undisputed chief in GPU ray tracing. Thus AMD will probably be higher capable of battle towards it, however RDNA 3 gained’t be enjoying round.

Is the 6900 XT better than the 3080

It would take one thing distinctive to cease the Lovelace card’s “absurd body charges,” as we wrote in our Nvidia GeForce RTX 4090 review. In comparison with Nvidia DLSS, AMD FSR 2.0 did assist stage the enjoying subject, however workforce inexperienced’s “Body Era” perform could possibly be too difficult to beat.

We is perhaps in for a royal brawl on the AMD RDNA 3 unveiling when two Radeon GPUs compete towards the RTX 4000, particularly for the reason that Nvidia RTX 4080 will probably be unveiled in November. The AMD Radeon RX 6900 XT, which prices slightly below $700, is probably the most inexpensive graphics card ever proper now when you want one in your pc.

“RDNA 3 can be the primary GPU structure that may leverage the improved 5nm course of and superior chip know-how. One other innovation contains architected items with enhanced ray-tracing capabilities and an optimized graphics pipeline with even quicker clock speeds and improved energy effectivity,” stated David Wang, AMD’s SVP of Engineering at Radeon Applied sciences Group.

Will RDNA 3 have AV1 encoding?

In keeping with Linux driver patches equipped by AMD and located by @Kepler_L2 on Twitter, AMD’s RDNA 3-based GPUs with VCN 4.x engines assist {hardware} AV1 encoding. It was incorrectly said beforehand that AMD’s future Radeon RX 7000-series GPUs didn’t assist AV1 encoding primarily based on Linux patches.

As a way to proceed enabling AMD’s RDNA 3 GPUs, the agency has supplied quite a few patches for Linux that supply details about the corporate’s forthcoming Video Codec Subsequent model 4.x video engines.

In keeping with the information now we have, VCN 4.x helps the decoding of virtually all modern codecs. Along with AV1, H.264, and H.265 encoding, AMD’s VCN 4.0 engine appears to deal with H.264/MPEG 4 AVC, H.265, VP9, AV1, and JPEG decoding.

VCN doesn’t but seem to permit decoding or encoding of H.266/VVC (versatile video coding). When the appropriate content material turns into out there, VVC, a next-generation codec, will doubtless be vital for 2023 or 2024, and AV1, a current-generation codec, will doubtless proceed to develop in utilization.

What is the 6900 XT equivalent to

Though some shoppers and companies would favor to have it now with a purpose to encode or transcode video, later this yr needs to be adequate.

The one chips that at present assist AV1 decoding and encoding are Intel’s Arc Alchemist GPUs. Though it hasn’t been verified but, we anticipate Nvidia’s future Ada structure can also allow AV1 encoding.

Whereas AMD’s RDNA 3 gained’t be out there available in the market till later this yr, if AMD’s VCN 4.x does really assist AV1 encoding, all three main GPU producers will present hardware-accelerated AV1 encoding and decoding.

Talking of VCN 4.0, even the current VCN 3. x engine absolutely helps each H.264 and H.265 encoding and decoding for H.264/MPEG4 AVC, H.265, VP9, AV1, and JPEG. The primary development in VCN 4.0 over 3.x will probably be hardware-accelerated AV1 encode/decode performance, barring additional developments.

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