Nvidia RTX 4090M and RTX 4080M have been spotted on the website of China-based retailer Goofish. These are laptop GPUs, repurposed into desktop cards. Specialized companies, who are not official brand partners of Nvidia, have made the RTX 4080M and RTX 4090M GPUs with reduced VRAM and CUDA core count. The price for an RTX 4090M is quite high too, even higher than the desktop variant.
RTX 4090 D has been launched in China. The GPU costs the same, but has lower amount of CUDA Cores. It also has slightly lower power at 425W, instead of 450W on the normal RTX 4090 which is now banned in the country. Nvidia has stated that RTX 4090 D is 5% less performant than the previous GPU in gaming and content creation. Also, the RTX 4090 D is not overclockable.
The US government had imposed sanctions upon Nvidia to prevent AI innovation in China. As a result, a top of the line gaming graphics card (RTX 4090) got banned in the country. Looks like Nvidia is working their way around this, and could be introducing a new RTX 4090 D 'Dragon' variant with slightly nerfed performance. If this is happening, Chinese gamers will still have a flagship GPU option to buy!
The US sanctions have put an AI chip ban on China among other countries has resulted in Nvidia's top-of-the-line RTX 4090 graphics cards being banned for sale. But, new factories in China are reportedly taking the board components (GPU chip, VRAM, etc.) to redesign their own GPUs, built specifically for AI compute!