WEBVTT

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imagine you could build a CPU in much the same way that we build pcs today

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with parts from different manufacturers this might actually become a reality in

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the near future thanks to a new standard called ucie that's being pushed by a lot

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of major players in the tech industry uci stands for universal chiplet

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interconnect express and it sounds a bit like pci express right funnily enough

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it's conceptually similar instead of adding to your computer's functionality

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with cards that fit into slots ucie builds on a chips functionality with

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additional chip lits as an example ucie

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might allow for a system on ship that has an Intel CPU graphics from AMD and a

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wi-fi radio from qualcomm a security enclave from microsoft and an ai

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accelerator from google we did see something like this in 2018 when Intel

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came out with those kaby lake g processors that featured AMD graphics

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but ucie takes this concept further and also standardizes it that's the

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important part but hold on systems on a chip are already a thing so what's the

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point of this modular approach well most current socs are designed as a

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single monolithic chip which presents some manufacturing disadvantages you see

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transistors have gotten much smaller which makes our chips perform better and

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consume less power but as we start hitting the limits of

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how small we can make them the obvious way to continue improving performance is

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to make the chips bigger but doing this raises the chances of a manufacturing

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defect one little tiny defect that will render the entire thing useless so

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instead of throwing the baby out with the bath water the industry is moving

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towards smaller chiplets that can be combined after they're manufactured

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moreover ucie enables chiplets from different companies to be combined

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another key difference from how chiplets are usually put together you can even

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combine different chiplets that use different process nodes onto the same

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package believe it or not wireless chips for things like wi-fi and 5g actually

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perform better with larger transistors because there isn't as much signal

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leakage so you could combine a modem built on a larger node with a processor

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built on a smaller one this opens the floodgates for companies to make

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different kinds of specialized chips a relatively low cost without having to

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design them from scratch meaning it could be easier and cheaper in the end

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to get a phone with better ai for photo editing and voice transcription for

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example instead of like we have right now where we are relying on the apples

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of the world to make one chip to rule them all but how exactly does ucie help

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chips from different companies talk to each other how does the standard work

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right let's talk about how these chiplets would communicate you know how

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we compared ucie to PCIe earlier in the video ucie can actually use pci express

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to move data between chiplets much the same way an NVIDIA graphics card can

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talk with an Intel CPU ucie can also use another protocol

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called compute express link or cxl which

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is basically a higher performance PCIe variant for data centers but because

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ucie is designed primarily for chiplets that sit right next to each other it's

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much lower latency than a typical pci express implementation and it can also

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move plenty of data we're talking 1.3

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terabytes per second through one millimeter of chip edge

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that quick communication means that ucie chips could combine features that would

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otherwise need to be on separate chips or even separate cards while using a lot

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less power but it's not quite the same thing as AMD's infinity fabric or

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apple's ultra fusion used in the m1 ultra as directly connecting CPU cores

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like those do requires more complex designs and keep in mind that ucie is a

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very new standard so don't expect to see tons of pcs and phones and servers that

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could be rocking it immediately but it could end up being quite a big

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deal down the line as industry heavy hitters like Intel AMD ARM google

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microsoft meta samsung qualcomm and tsmc

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have all thrown their weight behind the standard and keep an eye on apple and

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NVIDIA apple has moved toward designing their own ARM-based silicone in-house

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while NVIDIA continues to favor monolithic chips but maybe we'll see

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them jump on the uci train in the future if it does end up becoming a ubiquitous

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industry standard in the meantime i think i'll design my

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own phone chip with two 5g modems so then it'll be 10g

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that's how it works 25g

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thanks for watching guys if you like this video hit like hit subscribe and hit us up in the comments section with

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your ideas for subjects that you want to see us cover in the future