Gamers Nexus had a chat with NVIDIA and got to hear that the green team got a similar functionality working internally. NVIDIA promises to enable it on Ampere GPUs via future software updates but it's unknown when it will be ready. In terms of performance, NVIDIA believes it can offer similar performance results as AMD, on both AMD and Intel CPU based PCs.
Hard to fit in a tweet, but basically, they're working on enabling the same feature as AMD Smart Access Memory (AMD GPU+CPU=Perf uplift) on both Intel and AMD. No ETA yet. Doesn't look like it'll be ready before RX 6000 launch, but we'll keep an eye on development.— GamersNexus (@GamersNexus) November 12, 2020