Tech outlet Angstronomics has a really detailed roundup printed relating to the specs of AMD’s RDNA 3 GPUs such because the Navi 31, Navi 32, and Navi 33 chips that may go on to energy their next-gen Radeon RX 7000 sequence graphics playing cards.
AMD Navi 31, Navi 32, Navi 33 “RDNA 3” GPUs For Radeon RX 7000 Series Graphics Cards Detailed
Previously leaked data throughout the Linux patches has revealed that there are going to be at the least 4 RDNA 3 IPs that will probably be launched for the buyer phase. These embody Navi 31, Navi 32, Navi 33, and an APU design.
|GC IP VER||GFX ID||AMDGPU_FAMILY (through Coelacanth-Dream)||TYPE|
|11.0.0||gfx1100 (Navi31)1||AMDGPU_FAMILY_GC_11_0_0 (FAMILY_GFX1100)||dGPU|
|11.0.2||gfx1102 (Navi32)||AMDGPU_FAMILY_GC_11_0_0 (FAMILY_GFX1100)||dGPU|
|11.0.3?||gfx1101 (Navi33)?||AMDGPU_FAMILY_GC_11_0_0 (FAMILY_GFX1100)?||dGPU?|
Now Angstronomics has reported data corresponding to die sizes, GPU configurations, and options that will find yourself within the closing retail merchandise. An fascinating assertion by the tech outlet has been made which reveals that configurations for Navi 3X GPUs had been first formulated in 2019 after which finalized someday in 2020. These specs haven’t been modified since nevertheless, varied rumors have identified two totally different specs for the GPUs which signifies that both AMD has in actual fact made adjustments since their closing designs or these rumors had been merely not aligned with the reality. With that stated, let’s examine what kind of configurations we are able to anticipate with the Navi 3x “RDNA 3” GPU lineup.
AMD confirmed that its RDNA 3 GPUs will probably be coming later this yr with an enormous efficiency uplift. The firm’s Senior Vice President of Engineering, Radeon Technologies Group, David Wang, stated that the next-gen GPUs for Radeon RX 7000 sequence will provide over 50% efficiency per watt uplift vs the present RDNA 2 GPUs. Some of the important thing options of the RDNA 3 GPUs highlighted by AMD will embody:
- 5nm Process Node
- Advanced Chiplet Packaging
- Rearchitected Compute Unit
- Optimized Graphics Pipeline
- Next-Gen AMD Infinity Cache
- >50% Perf/Watt vs RDNA 2
Gamers ought to anticipate fluid 4K gaming to be buttery easy on these graphics playing cards and with the FidelityFX suite providing next-gen FSR, SAS, and SAM help, we’d even see playable 60 FPS at 8K decision.
AMD Navi 31 “Plum Bonito” GPU Configuration
The AMD Navi 31 GPU, the flagship RDNA 3 chip, would energy the next-gen fanatic playing cards such because the Radeon RX 7900 XT graphics card. We have heard that AMD will drop CU (Compute Units) in favor of WGP (Work Group Processors) on its next-gen RDNA 3 GPUs. Each WGP will home twin CU (Compute Units) however with twice the SIMD32 clusters versus simply 2 on every CU inside RDNA 2. Rumors are that AMD has the choice to pick between Samsung and TSMC for the 6nm die.
- AMD Navi 31: 12288 Cores, 384-bit Bus, 192 MB Infinity Cache, 308mm2 GPU Die @5nm
- AMD Navi 21: 5120 Cores, 384-bit Bus, 128 MB Infinity Cache, 520mm2 GPU Die @7nm
According to the newest data, the AMD Navi 31 GPU with RDNA 3 structure is anticipated to supply a single GCD with 48 WGPs, 12 SAs, and 6 SEs. This will give out a complete of 12,288 SPs or stream processors. This is a rise of two.4x in cores in comparison with the 5120 SPs featured on the Navi 21 GPU. The GPU or the Navi 31 GCD is alleged to measure 308mm2 and can come packaged on TSMC’s 5nm course of node.
The Navi 31 GPU may also carry 6 MCD’s which can function 16 MB Infinity Cache per die and are additionally prone to carry the 64-bit (32-bit x 2) reminiscence controllers that may present the chip with a 384-bit bus interface. While this equals 96 MB of Infinity Cache which is decrease than the 128 MB featured on the present Navi 21 GPUs, there’s additionally a 3D-Stacked answer within the works which was identified just lately and that may double the Infinity Cache with 32 MB (16 MB 0-hi + 16 MB 1-hi) capacities for a complete of 192 MB of cache. This is a 50% enhance versus the present Navi 21 design and it additionally makes Navi 31 the primary GPU with each, chiplet and 3D stacked designs. These chiplets or MCD’s will probably be fabricated on TSMC’s 6nm course of node and measure 37.5mm2 every.
The outlet reviews that there was a good increased 288 MB (16 MB 0-Hi + 16 MB 1-Hi + 16 MB 2-Hi) MCD package deal deliberate however that was scrapped resulting from cost-benefit causes. There are additionally talks of a cut-down variant of the Navi 31 GPU which can function 42 WGPs or 10,752 cores and 5 MCDs for 80MB Infinity Cache throughout a 320-bit bus interface.
Now, that is going to lead to increased energy draw and AMD appears to have confirmed this a lot that their next-generation graphics card lineup will function increased energy consumption however they are going to nonetheless be a extra environment friendly possibility than what NVIDIA has to supply. The AMD Radeon RX 6950 XT already has a TBP of 335W so for a >2x efficiency achieve. The playing cards are anticipated to retain their twin 8-pin plug enter for energy and have an up to date triple-fan cooling design which is barely taller than the one at the moment in use.
AMD Navi 32 “Wheat Nas” GPU Configuration
The AMD Navi 32 GPU codenamed “Wheat Nas” can be one of many two MCM GPUs featured within the RDNA 3 lineup. The GPU will function a single GCD (Graphics Compute Dies) and 4 MCDs (Multi-Cache Die). The GPU or GCD is alleged to measure 200mm2 whereas every MCD will retain the identical measurement at 37.5mm2.
- AMD Navi 32: 7680 Cores, 256-bit Bus, 64 MB Infinity Cache, 200mm2 GPU Die @5nm
- AMD Navi 22: 2560 Cores, 192-bit Bus, 96 MB Infinity Cache, 335mm2 GPU Die @7nm
The GCD will probably be geared up with 3 Shader Engines and every Shader Engine has 6 Shader Arrays (18 in complete). The GPU will function a complete of 30 WGP or 60 Compute Units for a complete of 7680 cores. This rounds as much as >50% extra cores than the Navi 31 flagship.
Each MCD must also function 2 reminiscence join hyperlinks (32-bit). That’s a complete of 8 32-bit reminiscence controllers for a 256-bit bus interface. Each MCD will retain the 16 MB 0-Hi capability however there doesn’t appear to be any 1-Hi variant which signifies that the chip may have simply 64 MB most configs. That Navi 32 GPU is alleged to launch in 2023 and would be the highest chip for cellular and mid-tier chip for desktops. The GPU could be first rolled out to the cellular phase and is likely to be introduced at CES 2023 which makes ideally suited sense since we may have Phoenix Range and Dragon Range laptops with Zen 4 cores prepared by then.
AMD Navi 32 “Hotpink Bonefish” GPU Configuration
The AMD Navi 33 GPU codenamed “Hotpink Bonefish” will begin the monolithic phase throughout the RDNA 3 household. The GPU will function a single die. The die is similar to the flagship Navi 21 GPU and is anticipated to make the most of a 6nm course of node for fabrication with a die measurement of 203mm2.
- AMD Navi 33: 4096 Cores, 128-bit Bus, 32 MB Infinity Cache, 335mm2 GPU Die @6nm
- AMD Navi 23: 2048 Cores, 128-bit Bus, 32 MB Infinity Cache, 237mm2 GPU Die @7nm
The Navi 33 GCD is anticipated to function 2 Shader Engines and every Shader Engine has 2 Shader Arrays (2 per SE / 4 in complete). This rounds as much as 16 WGP’s or 32 Compute Units for a complete of 4096 cores which is increased than the Radeon RX 6800 “Navi 21 XL” GPU. The GPU will come packaged with 32 MB of Infinity Cache, the identical quantity because the Navi 23 GPU, and throughout a 128-bit huge bus. Just just like the Navi 32 GPUs, the Navi 33 chips will probably be targeted first on the cellular lineup with early graphics efficiency placing them forward of the Intel Arc Alchemist lineup at lower than half the fee & whereas pulling much less energy.
The outlet additionally talks about two new options coming to AMD RDNA 3 Navi 3x GPUs for Radeon RX 7000 sequence graphics playing cards corresponding to:
One of the options within the RDNA 3 graphics pipeline is OREO: Opaque Random Export Order, which is simply one of many many space saving methods. With gfx10, the pixel shaders run out-of-order, where the outputs go right into a Re-Order Buffer earlier than moving to the remainder of the pipeline in-order. With OREO, the subsequent step (mix) can now obtain and execute operations in any order and export to the subsequent stage in-order. Thus, the ROB may be changed with a a lot smaller skid buffer, saving space.
The Memory Attached Last Level (MALL) Cache blocks are every halved in measurement, doubling the variety of banks for a similar cache quantity. There are additionally adjustments and additions that enhance graphics to MALL bandwidth and cut back the penalty of going out to VRAM.
The AMD Radeon RX 7000 “RDNA 3” GPU lineup primarily based on the Nav 3x GPUs is anticipated to launch later this yr with reviews pitting the flagship Navi 31 launch first adopted by Navi 32 and Navi 33 GPUs.
AMD RDNA 3 Navi 3X GPU Configurations (Preliminary)
|GPU Name||Navi 21||Navi 33||Navi 32||Navi 31||Navi 3X|
|GPU Package||Monolithic||Monolithic||MCM (1 GCD + 4 MCD)||MCM (1 GCD + 6 MCD)||MCM (TBD)|
|GPU Die Size||520mm2||~400mm2||440mm2||630mm2||TBD|
|SPs Per WGP||128||256||256||256||256|
|Compute Units (Per Die)||80||40-32||160 -128 (Total)||240-192 (Total)||128 (per GPU)
|Cores (Per Die)||5120||5120-4096||10240-8192||15360-12288||8192|
|Memory Bus||256-bit||128-bit||256-bit||384-bit||384-bit x2?|
|Memory Capacity||Up To 16 GB||Up To 8 GB||Up To 16 GB||Up To 24 GB||Up To 32 GB|
|Memory Speed||16-18 Gbps||TBD||TBD||20 Gbps||TBD|
|Memory Bandwidth||512-576 GB/s||TBD||TBD||960 GB/s||TBD|
|Infinity Cache||128 MB||128 MB||256 MB||384 MB||TBD|
|Flagship SKU||Radeon RX 6900 XTX||Radeon RX 7600 XT?||Radeon RX 7800 XT?
Radeon RX 7700 XT?
|Radeon RX 7900 XT?||Radeon Pro|
|Launch||This fall 2020||This fall 2022?||This fall 2022?||This fall 2022?||2023?|
Which next-gen AMD Radeon RX 7000 sequence graphics card are you for essentially the most?