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if silicon is a circle and is cut to become a rectangle what happens to the outeredge that is circular?

title says it all.

so since silicon is made in a circular shape what do compaies do with the acsses parts?聽

Tough Times for Silicon Wafer Market Continue After Two Consecutive  Quarters of Revenue Decline | SEMI

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discarded or re-melted to make more silicon wafers

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ground up and reused most likely.

But the amount 'wasted' is generally pretty small, as they use computer algorythms to optimize the layout.

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@Tan3l6聽Do I read it correctly that they just grind away the impurities/structured layers?

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13 minutes ago, James Evens said:

@Tan3l6聽Do I read it correctly that they just grind away the impurities/structured layers?

I really am not an expert in this field, but after some processes it might be easier and cheaper to make wafers out of聽purified silicon sand, not excess wafers...

Perhaps someone knows better about the process.

... but I'm no expert.

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The inner ones are bigger chips, outer ones where bigger ones cant fit.聽

So for nvidia gpus, you have ga102 on the inside, and the ga104 on the outside.

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  • 2 weeks later...

I wonder why the wafers are made circular....why not just make them rectangular to begin with?

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A lot of steps spinn the wafer so circular makes sense.

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14 minutes ago, Video Beagle said:

I wonder why the wafers are made circular....why not just make them rectangular to begin with?

Because they are cut from crystals like this one:

Monokristalines_Silizium_f%C3%BCr_die_Wa

https://en.wikipedia.org/wiki/Czochralski_method

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3 minutes ago, Sauron said:

Because they are cut from crystals like this one:

Wow! I literally had no idea that's how it was made. (I also didn't realize I necro-threaded in my insomina reading 馃檪 )

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