With PowerVia, Intel Achieves a Chipmaking Breakthrough
Intel is about to turn chipmaking upside down with PowerVia, a new approach to delivering power that required a radical rethink to both how chips are made and how they are tested. For all the modern history of computer chips, they've been built like pizzas—from the bottom up, in layers. In the case of chips, you start with the tiniest features, the transistors, and then you build up increasingly less-tiny layers of wires that connect the transistors and different parts of the chip (these are called interconnects). Included among those top layers are the wires that bring in the power that makes the chip go.
When the chip is done, you flip it over, enclose it in packaging that provides connections to the outer world, and you're ready to put it in a computer. Unfortunately, this approach is running into problems. As they get smaller and denser, the layers that share interconnects and power connections have become an increasingly chaotic web that hinders the overall performance of each chip. Once an afterthought, "now they have a huge impact," says Ben Sell, vice president of Technology Development at Intel and part of the team that brought PowerVia to fruition. In short, power and signals fade, requiring workarounds or simply dumping more power in.
When the chip is done, you flip it over, enclose it in packaging that provides connections to the outer world, and you're ready to put it in a computer. Unfortunately, this approach is running into problems. As they get smaller and denser, the layers that share interconnects and power connections have become an increasingly chaotic web that hinders the overall performance of each chip. Once an afterthought, "now they have a huge impact," says Ben Sell, vice president of Technology Development at Intel and part of the team that brought PowerVia to fruition. In short, power and signals fade, requiring workarounds or simply dumping more power in.