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The a16z Show

H20s to China + 15% with Chris Miller and Lennart Heim

The a16z Show

a16z

Science, Innovation, Business, Entrepreneurship, Culture, Disruption, Software Eating The World, Technology

4.41.1K Ratings

🗓️ 14 August 2025

⏱️ 67 minutes

🧾️ Download transcript

Summary

We’re sharing an episode from ChinaTalk that dives into one of the biggest recent reversals in U.S. tech policy. The U.S. banned Nvidia’s H20 AI chips to China in April. Now, just months later, they’re being sold—with a 15% export fee. What happened? Why the reversal? And what does it mean for the future of AI competition between the U.S. and China? Chris Miller—author of Chip War—and Lennart Heim from RAND join ChinaTalk host Jordan Schneider to unpack the policy flip-flop, why China is publicly downplaying interest in the H20, and why high-bandwidth memory and semiconductor manufacturing tools may be even more important than the Nvidia chips themselves.

Transcript

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0:00.0

Emergency Podcast. We're bringing back Leonard Haim of Rand and Chris Miller. You guys know who Chris Miller is. To talk the new H20 drama. We went from banning it in April to now selling it with a 15% export fee. All right, Leonard, why don't you start our narratives? What is the age 20?

0:21.6

Why should you care about it?

0:23.1

And what were the first few months of the Trump administration doing when it came to this chip?

0:28.1

The H20 is the chip, which Nvidia designed as a response to export controls in 2023, right?

0:34.1

It's a typical game.

0:35.1

You draw some lines and then new chips get created right below the lines.

0:38.3

And the H20 is such an example, but it did a neat trick.

0:41.3

It maxed out the specifications which are not controlled, memory bandwidth.

0:45.3

So putting on the best high bandwidth memory, well the world currently has, on this chip and created an export control compliant chip,

0:53.3

which I think was introduced at

0:54.7

beginning of 24 so a couple of months after the update and was sold over 2024

1:00.3

lots of interest in this chip and when then the term administration started in

1:05.7

January they well we can say the bind administration didn't get to it I think

1:10.2

it was definitely a way out this problem many of their officials officials came out many of them even favor but they just never

1:14.6

got to banning to it because again many stakeholders and many different opinions and also just

1:18.9

kind of running out of time but trump then banned this chip as we saw reported in april

1:24.3

2005 not via the normal means how you do it not via regulation, via using a cool tool called is informed letters, because they're pretty fast. And you can just send a letter to the companies which produce these chips and tell them like, hey, you can't sell these chips anymore because we expect there's an export control violation going on and we actually think this chip is too good. So that's where we started. So the chip was banned, for my personal point of view, a big success. I think this chip should not be sold. We need to reduce our thresholds. This is just simply too good of a chip. And well, then this was the latest status. And I think in the last few months, last few weeks, we saw some flip-flopping back and forth and every day revealed some information.

2:02.2

And I don't know, while we talk, probably more things will come out over time.

2:05.8

All right. So this was President Trump on Monday.

2:09.3

I asked you two questions. One about China, one about Russia, if I could.

2:12.7

On China, your administration agreed to send the most advanced or advanced Nvidia and AMD chips.

2:19.3

No, obsolete.

...

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