AMD RDNA 3 GPUs detailed in new fan-made renders: beautiful
AMD is still months away from launching its new RDNA 3-based GPU architecture, with the Navi 31, Navi 32 and Navi 33 to complement the new Radeon RX 7000 series graphics cards.
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The new AMD Navi 31 GPU is expected to debut with a chiplet design, featuring a GCD (Graphics Core/Compute Die) and MCD (Memory Complex/Compute Dies). You can see in the new Navi 3X renders from Wild_C on Twitter that the Navi 31 GPU is going to be a larger design than the Navi 32 – which is also a chiplet design – while Navi 33 is a regular monolithic GPU design.
As for die sizes, Wild_C says we should expect Navi 3X die sizes of (approximately):
- Navi33 = 20.5 * 19.5 = 400mm²
- Navi31/32 MCD=4.68*9.36=44mm²
- Navi32 GCD=13.1*20.1=263mm²
- Navi31 GCD=13.1*28.2=369mm²
- Navi32 total = 439 mm²
- Navi31 total = 633 mm²
Navi 31 might be enough to topple NVIDIA’s AD102 for its next-gen GeForce RTX 4090 graphics card, with NVIDIA apparently waiting for Navi 31 to see if it should unleash the AD102 again with 600W+ of power. The OG AD102 GPU is expected to have a TDP of 450W, but 600W+ is going to be a big thing to behold…really big.
We should expect AMD to launch the Navi 31 GPU monster inside a Radeon RX 7900 XT flagship (if they continue their naming scheme) later this year, with Navi 31 packing 11288 GPU cores. , PCIe 5.0 x16 and 6 x MCD support which seems to be enough to keep NVIDIA shaking in its GeForce RTX boots.
AMD is no stranger to bringing VRAM as close to the GPU as possible, with Fiji and Vega rocking HBM and HBM2 respectively. AMD is not using HBM this time around, replacing it with super-high-speed GDDR6 and placing it directly next to the GCD.
Navi 32 is expected to populate the next generation “mid-range” Radeon RX 7000 series GPUs with a GCD+MCD design, while the Navi 33 GPU continues with its monolithic GPU design. Navi 32 and Navi 33 are not so different in design, it’s just that Navi 32 is more complex with chip design…Navi 31+Navi 32 are made on TSMC 5nm+6nm, while that Navi 33 is on TSMC 6nm.