3 ms·

I don't understand. How does the CPU talk to the GPU on that product? What bridge the GPU die to the CPU die? Sounds like you are saying the CPU doesn't talk

• wtallis 9y ago
  > Sounds like you are saying the CPU doesn't talk to the GPU over EMIB. Correct. There's a conventional link through the package substrate carrying the PCIe signals from the CPU to the GPU. The only EMIB on that product is between the GPU and its DRAM. That's why the GPU and its DRAM are adjacent, while the CPU is about 1cm away from them: https://images.anandtech.com/doci/12003/intel-8th-gen-cpu-discrete-graphics-2.jpg https://images.anandtech.com/doci/12003/intel-8th-gen-cpu-di... Intel would need to redesign the CPU die to accommodate an EMIB connection to the CPU. As it stands, an EMIB link would probably get in the way of lots of contacts that need to go to something other than the GPU, and EMIB wouldn't be worth the trouble for a relatively narrow and slow link like PCIe. The point of EMIB is to enable very wide and fast links between dies, so that inter-die communication is almost as fast as communication across a single die.