Both AMD and NVIDIA are expected to focus heavily on the efficiency and GPU power design of their next-generation GPUs to deliver higher performance. We’ve seen various leaks of NVIDIA’s GeForce RTX 40-series graphics cards, which are expected to hit 600W. Meanwhile, AMD says that while they’ve announced a performance-per-watt increase of over 50% over the previous generation, that doesn’t mean the power levels of the RDNA 3 ‘Radeon RX 7000’ series graphics cards won’t go up.
“It’s actually the fundamentals of physics that drive it all, the demand for gaming and computing performance, if anything, is just accelerating, while at the same time the underlying process technology is slowing down dramatically,” Naffziger explained. — Improvements are also slowing down. So power levels will keep going up. Now we have a multi-year roadmap of very significant efficiency improvements to offset that curve, but the trend is there. Performance is king, but , even if our design is more power efficient, that doesn’t mean you don’t push the power levels up, if the competition is doing the same thing. It’s just that they push it higher than us.”
A few months ago, we had seen rumors that the AMD RDNA 3-powered Radeon RX 7000 series offered up to 400W TDP. That’s a 100W increase over the existing Navi 21 GPU, which tops out at 335W (Navi 21 KXTX). So if AMD achieves a 2x performance gain over its existing chip lineup, the TDP should end up being closer to 450W, which is the same as the rumored NVIDIA GeForce RTX 4090 BFGPU. At the same time, peak power and running power can be very different, and Sam is pretty confident when he says that competitors will have to push the power even higher (much higher).
Additionally, next-generation graphics cards over 400-450W TBP will have to take advantage of the new PCIe Gen 5 connectors, as the triple-layer 8-pin connector can only go up to 450W. So whether AMD wants to go the triple-layer 8-pin route, or eventually use the new PCIe Gen 5 connector, to be ATX 3.0 compliant and deliver solid performance, remains to be seen by the AMD camp.
Some of the key features of the RDNA 3 GPUs that AMD has highlighted will include:
5nm process node
Advanced Chip Packaging
Rebuilt computing unit
Optimized graphics pipeline
Next-Generation AMD Infinity Cache
Perf/Watt>50% compared to RDNA 2
AMD Radeon RX 7000 series graphics cards based on the RDNA 3 GPU architecture are expected to launch later this year, so expect more information in the coming months.